crypto/des: new package providing implementations of DES and TDEA

Original code by Chris Lennert <cale...@gmail.com>

R=rsc, agl1
CC=golang-dev
https://golang.org/cl/4331054

diff --git a/src/pkg/crypto/des/Makefile b/src/pkg/crypto/des/Makefile
new file mode 100644 (file)
index 0000000..94b0fc0
--- /dev/null
+++ b/src/pkg/crypto/des/Makefile
@@ -0,0 +1,13 @@
+# Copyright 2010 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+include ../../../Make.inc
+
+TARG=crypto/des
+GOFILES=\
+       block.go\
+       cipher.go\
+       const.go\
+
+include ../../../Make.pkg

diff --git a/src/pkg/crypto/des/block.go b/src/pkg/crypto/des/block.go
new file mode 100644 (file)
index 0000000..a859fb6
--- /dev/null
+++ b/src/pkg/crypto/des/block.go
@@ -0,0 +1,130 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package des
+
+// Encrypt one block from src into dst, using the subkeys.
+func encryptBlock(subkeys [16]uint64, dst, src []byte) {
+       // perform initial permutation
+       permutedSrc := permuteBlock(src, initialPermutation[0:])
+
+       // split into left and right halves
+       left := uint32(permutedSrc >> 32)
+       right := uint32(permutedSrc)
+
+       // process left and right with feistel function
+       for i := 0; i < 16; i++ {
+               previousRight := right
+               right = left ^ feistel(right, subkeys[i])
+               left = previousRight
+       }
+       // switch left & right and perform final permutation
+       preOutput := (uint64(right) << 32) | uint64(left)
+       final := uint64ToBytes(permuteBlock(uint64ToBytes(preOutput), finalPermutation[0:]))
+
+       // copy bytes to destination
+       copy(dst, final)
+}
+
+// Decrypt one block from src into dst, using the subkeys.
+func decryptBlock(subkeys [16]uint64, dst, src []byte) {
+       // perform initial permutation
+       permutedSrc := permuteBlock(src, initialPermutation[0:])
+
+       // split into left and right halves
+       left := uint32(permutedSrc >> 32)
+       right := uint32(permutedSrc)
+
+       // process left and right with feistel function
+       for i := 0; i < 16; i++ {
+               previousRight := right
+               // decryption reverses order of subkeys
+               right = left ^ feistel(right, subkeys[15-i])
+               left = previousRight
+       }
+       // switch left & right and perform final permutation
+       preOutput := (uint64(right) << 32) | uint64(left)
+       final := uint64ToBytes(permuteBlock(uint64ToBytes(preOutput), finalPermutation[0:]))
+
+       // copy bytes to destination
+       copy(dst, final)
+}
+
+// DES Feistel function
+func feistel(right uint32, key uint64) (result uint32) {
+       rightExpanded := permuteBlock(uint32ToBytes(right), expansionFunction[:])
+       xorResult := key ^ rightExpanded
+       var sBoxResult uint32
+       for i := uint8(0); i < 8; i++ {
+               sBoxCoordValue := uint8((xorResult << (16 + (6 * i))) >> 58)
+               // determine the proper S-box row and column from the 6-bits of
+               // sBoxCoordValue row is determined by 1st and 6th bit
+               row := (sBoxCoordValue & 0x1) | ((sBoxCoordValue & 0x20) >> 4)
+               // column is middle four bits
+               column := (sBoxCoordValue << 3) >> 4
+               sBoxResult |= uint32(sBoxes[i][row][column]) << (4 * (7 - i))
+       }
+       return uint32(permuteBlock(uint32ToBytes(sBoxResult), permutationFunction[0:]))
+}
+
+// general purpose function to perform DES block permutations
+func permuteBlock(src []byte, permutation []uint8) (block uint64) {
+       for finalPosition, bitNumber := range permutation {
+               bitIndex := bitNumber - 1
+               byteIndex := bitIndex >> 3
+               bitNumberInByte := bitIndex % 8
+               bitValue := (src[byteIndex] << bitNumberInByte) >> 7
+               block |= uint64(bitValue) << uint64((uint8(len(permutation)-1))-uint8(finalPosition))
+       }
+       return
+}
+
+// creates 16 28-bit blocks rotated according
+// to the rotation schedule
+func ksRotate(in uint32) (out []uint32) {
+       out = make([]uint32, 16)
+       last := in
+       for i := 0; i < 16; i++ {
+               // 28-bit circular left shift
+               part1 := (last << (4 + uint32(ksRotations[i]))) >> 4
+               part2 := (last << 4) >> (32 - ksRotations[i])
+               out[i] = part1 | part2
+               last = out[i]
+       }
+       return
+}
+
+// creates 16 56-bit subkeys from the original key
+func ksGenerateSubkeys(cipher *DESCipher) {
+       // apply PC1 permutation to key
+       permutedKey := permuteBlock(cipher.key, permutedChoice1[0:])
+
+       // rotate halves of permuted key according to the rotation schedule
+       leftRotations := ksRotate(uint32(permutedKey >> 28))
+       rightRotations := ksRotate(uint32(permutedKey<<4) >> 4)
+
+       // generate subkeys
+       for i := 0; i < 16; i++ {
+               // combine halves to form 56-bit input to PC2
+               pc2Input := uint64(leftRotations[i])<<28 | uint64(rightRotations[i])
+               // apply PC2 permutation to 7 byte input
+               cipher.subkeys[i] = permuteBlock(uint64ToBytes(pc2Input)[1:], permutedChoice2[0:])
+       }
+}
+
+// generates a byte array from uint32 input
+func uint32ToBytes(block uint32) []byte {
+       return []byte{
+               byte(block >> 24), byte(block >> 16),
+               byte(block >> 8), byte(block)}
+}
+
+// generates a byte array from uint64 input
+func uint64ToBytes(block uint64) []byte {
+       return []byte{
+               byte(block >> 56), byte(block >> 48),
+               byte(block >> 40), byte(block >> 32),
+               byte(block >> 24), byte(block >> 16),
+               byte(block >> 8), byte(block)}
+}

diff --git a/src/pkg/crypto/des/cipher.go b/src/pkg/crypto/des/cipher.go
new file mode 100644 (file)
index 0000000..c6d36d7
--- /dev/null
+++ b/src/pkg/crypto/des/cipher.go
@@ -0,0 +1,113 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package des
+
+import (
+       "os"
+       "strconv"
+)
+
+// The DES block size in bytes.
+const BlockSize = 8
+
+type KeySizeError int
+
+func (k KeySizeError) String() string {
+       return "crypto/des: invalid key size " + strconv.Itoa(int(k))
+}
+
+// A DESCipher is an instance of DES encryption.
+type DESCipher struct {
+       key     []byte
+       subkeys [16]uint64
+}
+
+// NewCipher creates and returns a new Cipher.
+func NewDESCipher(key []byte) (*DESCipher, os.Error) {
+       k := len(key)
+       if k != 8 {
+               return nil, KeySizeError(k)
+       }
+
+       c := &DESCipher{key, [16]uint64{}}
+       ksGenerateSubkeys(c)
+       return c, nil
+}
+
+// BlockSize returns the DES block size, 8 bytes.
+func (c *DESCipher) BlockSize() int { return BlockSize }
+
+// Encrypts the 8-byte buffer src and stores the result in dst.
+// Note that for amounts of data larger than a block,
+// it is not safe to just call Encrypt on successive blocks;
+// instead, use an encryption mode like CBC (see crypto/cipher/cbc.go).
+func (c *DESCipher) Encrypt(dst, src []byte) { encryptBlock(c.subkeys, dst, src) }
+
+// Decrypts the 8-byte buffer src and stores the result in dst.
+func (c *DESCipher) Decrypt(dst, src []byte) { decryptBlock(c.subkeys, dst, src) }
+
+// Reset zeros the key data, so that it will no longer
+// appear in the process's memory.
+func (c *DESCipher) Reset() {
+       for i := 0; i < len(c.key); i++ {
+               c.key[i] = 0
+       }
+       for i := 0; i < len(c.subkeys); i++ {
+               c.subkeys[i] = 0
+       }
+}
+
+// A TripleDESCipher is an instance of TripleDES encryption.
+type TripleDESCipher struct {
+       key                       []byte
+       cipher1, cipher2, cipher3 *DESCipher
+}
+
+// NewCipher creates and returns a new Cipher.
+func NewTripleDESCipher(key []byte) (*TripleDESCipher, os.Error) {
+       k := len(key)
+       if k != 24 {
+               return nil, KeySizeError(k)
+       }
+
+       cipher1, _ := NewDESCipher(key[0:8])
+       cipher2, _ := NewDESCipher(key[8:16])
+       cipher3, _ := NewDESCipher(key[16:])
+       c := &TripleDESCipher{key, cipher1, cipher2, cipher3}
+       return c, nil
+}
+
+// BlockSize returns the TripleDES block size, 8 bytes.
+// It is necessary to satisfy the Block interface in the
+// package "crypto/cipher".
+func (c *TripleDESCipher) BlockSize() int { return BlockSize }
+
+// Encrypts the 8-byte buffer src and stores the result in dst.
+// Note that for amounts of data larger than a block,
+// it is not safe to just call Encrypt on successive blocks;
+// instead, use an encryption mode like CBC (see crypto/cipher/cbc.go).
+func (c *TripleDESCipher) Encrypt(dst, src []byte) {
+       c.cipher1.Encrypt(dst, src)
+       c.cipher2.Decrypt(dst, dst)
+       c.cipher3.Encrypt(dst, dst)
+}
+
+// Decrypts the 8-byte buffer src and stores the result in dst.
+func (c *TripleDESCipher) Decrypt(dst, src []byte) {
+       c.cipher3.Decrypt(dst, src)
+       c.cipher2.Encrypt(dst, dst)
+       c.cipher1.Decrypt(dst, dst)
+}
+
+// Reset zeros the key data, so that it will no longer
+// appear in the process's memory.
+func (c *TripleDESCipher) Reset() {
+       for i := 0; i < len(c.key); i++ {
+               c.key[i] = 0
+       }
+       c.cipher1.Reset()
+       c.cipher2.Reset()
+       c.cipher3.Reset()
+}

diff --git a/src/pkg/crypto/des/const.go b/src/pkg/crypto/des/const.go
new file mode 100644 (file)
index 0000000..99927fb
--- /dev/null
+++ b/src/pkg/crypto/des/const.go
@@ -0,0 +1,138 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package des implements the Data Encryption Standard (DES) and the
+// Triple Data Encryption Algorithm (TDEA) as defined
+// in U.S. Federal Information Processing Standards Publication 46-3.
+package des
+
+// Used to perform an initial permutation of a
+// 64-bit input block
+var initialPermutation = [64]uint8{
+       58, 50, 42, 34, 26, 18, 10, 2,
+       60, 52, 44, 36, 28, 20, 12, 4,
+       62, 54, 46, 38, 30, 22, 14, 6,
+       64, 56, 48, 40, 32, 24, 16, 8,
+       57, 49, 41, 33, 25, 17, 9, 1,
+       59, 51, 43, 35, 27, 19, 11, 3,
+       61, 53, 45, 37, 29, 21, 13, 5,
+       63, 55, 47, 39, 31, 23, 15, 7}
+
+// Used to perform a final permutation of a
+// 64-bit preoutput block
+// This is the inverse of initialPermutation
+var finalPermutation = [64]uint8{
+       40, 8, 48, 16, 56, 24, 64, 32,
+       39, 7, 47, 15, 55, 23, 63, 31,
+       38, 6, 46, 14, 54, 22, 62, 30,
+       37, 5, 45, 13, 53, 21, 61, 29,
+       36, 4, 44, 12, 52, 20, 60, 28,
+       35, 3, 43, 11, 51, 19, 59, 27,
+       34, 2, 42, 10, 50, 18, 58, 26,
+       33, 1, 41, 9, 49, 17, 57, 25}
+
+// Used to expand an input block of 32 bits,
+// producing an output block of 48 bits.
+var expansionFunction = [48]uint8{
+       32, 1, 2, 3, 4, 5,
+       4, 5, 6, 7, 8, 9,
+       8, 9, 10, 11, 12, 13,
+       12, 13, 14, 15, 16, 17,
+       16, 17, 18, 19, 20, 21,
+       20, 21, 22, 23, 24, 25,
+       24, 25, 26, 27, 28, 29,
+       28, 29, 30, 31, 32, 1}
+
+// Yields a 32-bit output from a 32-bit input
+var permutationFunction = [32]uint8{
+       16, 7, 20, 21,
+       29, 12, 28, 17,
+       1, 15, 23, 26,
+       5, 18, 31, 10,
+       2, 8, 24, 14,
+       32, 27, 3, 9,
+       19, 13, 30, 6,
+       22, 11, 4, 25}
+
+// Used in the key schedule to select 56 bits
+// from a 64-bit input.
+var permutedChoice1 = [56]uint8{
+       // left
+       57, 49, 41, 33, 25, 17, 9,
+       1, 58, 50, 42, 34, 26, 18,
+       10, 2, 59, 51, 43, 35, 27,
+       19, 11, 3, 60, 52, 44, 36,
+       // right
+       63, 55, 47, 39, 31, 23, 15,
+       7, 62, 54, 46, 38, 30, 22,
+       14, 6, 61, 53, 45, 37, 29,
+       21, 13, 5, 28, 20, 12, 4}
+
+// Used in the key schedule to produce
+// each subkey by selecting 48 bits
+// from the 56-bit input
+var permutedChoice2 = [48]uint8{
+       14, 17, 11, 24, 1, 5,
+       3, 28, 15, 6, 21, 10,
+       23, 19, 12, 4, 26, 8,
+       16, 7, 27, 20, 13, 2,
+       41, 52, 31, 37, 47, 55,
+       30, 40, 51, 45, 33, 48,
+       44, 49, 39, 56, 34, 53,
+       46, 42, 50, 36, 29, 32}
+
+// 8 S-boxes composed of 4 rows and 16 columns
+// Used in the DES cipher function
+var sBoxes = [8][4][16]uint8{
+       // S-box 1
+       {
+               [16]uint8{14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7},
+               [16]uint8{0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8},
+               [16]uint8{4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0},
+               [16]uint8{15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13}},
+       // S-box 2
+       {
+               [16]uint8{15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10},
+               [16]uint8{3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5},
+               [16]uint8{0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15},
+               [16]uint8{13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9}},
+       // S-box 3
+       {
+               [16]uint8{10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8},
+               [16]uint8{13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1},
+               [16]uint8{13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7},
+               [16]uint8{1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12}},
+       // S-box 4
+       {
+               [16]uint8{7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15},
+               [16]uint8{13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9},
+               [16]uint8{10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4},
+               [16]uint8{3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14}},
+       // S-box 5
+       {
+               [16]uint8{2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9},
+               [16]uint8{14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6},
+               [16]uint8{4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14},
+               [16]uint8{11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3}},
+       // S-box 6
+       {
+               [16]uint8{12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11},
+               [16]uint8{10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8},
+               [16]uint8{9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6},
+               [16]uint8{4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13}},
+       // S-box 7
+       {
+               [16]uint8{4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1},
+               [16]uint8{13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6},
+               [16]uint8{1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2},
+               [16]uint8{6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12}},
+       // S-box 8
+       {
+               [16]uint8{13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7},
+               [16]uint8{1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2},
+               [16]uint8{7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8},
+               [16]uint8{2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11}}}
+
+// Size of left rotation per round in each half of the key schedule
+var ksRotations = [16]uint8{1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1}

diff --git a/src/pkg/crypto/des/des_test.go b/src/pkg/crypto/des/des_test.go
new file mode 100644 (file)
index 0000000..a160b38
--- /dev/null
+++ b/src/pkg/crypto/des/des_test.go
@@ -0,0 +1,1595 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package des
+
+import (
+       "testing"
+)
+
+type CryptTest struct {
+       key []byte
+       in  []byte
+       out []byte
+}
+
+// some custom tests for DES
+var encryptDESTests = []CryptTest{
+       {
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x8c, 0xa6, 0x4d, 0xe9, 0xc1, 0xb1, 0x23, 0xa7}},
+       {
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0x35, 0x55, 0x50, 0xb2, 0x15, 0x0e, 0x24, 0x51}},
+       {
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0x61, 0x7b, 0x3a, 0x0c, 0xe8, 0xf0, 0x71, 0x00}},
+       {
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
+               []byte{0x92, 0x31, 0xf2, 0x36, 0xff, 0x9a, 0xa9, 0x5c}},
+       {
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xca, 0xaa, 0xaf, 0x4d, 0xea, 0xf1, 0xdb, 0xae}},
+       {
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0x73, 0x59, 0xb2, 0x16, 0x3e, 0x4e, 0xdc, 0x58}},
+       {
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0x6d, 0xce, 0x0d, 0xc9, 0x00, 0x65, 0x56, 0xa3}},
+       {
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
+               []byte{0x9e, 0x84, 0xc5, 0xf3, 0x17, 0x0f, 0x8e, 0xff}},
+       {
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xd5, 0xd4, 0x4f, 0xf7, 0x20, 0x68, 0x3d, 0x0d}},
+       {
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0x59, 0x73, 0x23, 0x56, 0xf3, 0x6f, 0xde, 0x06}},
+       {
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0x56, 0xcc, 0x09, 0xe7, 0xcf, 0xdc, 0x4c, 0xef}},
+       {
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
+               []byte{0x12, 0xc6, 0x26, 0xaf, 0x05, 0x8b, 0x43, 0x3b}},
+       {
+               []byte{0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xa6, 0x8c, 0xdc, 0xa9, 0x0c, 0x90, 0x21, 0xf9}},
+       {
+               []byte{0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0x2a, 0x2b, 0xb0, 0x08, 0xdf, 0x97, 0xc2, 0xf2}},
+       {
+               []byte{0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0xed, 0x39, 0xd9, 0x50, 0xfa, 0x74, 0xbc, 0xc4}},
+       {
+               []byte{0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
+               []byte{0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10},
+               []byte{0xa9, 0x33, 0xf6, 0x18, 0x30, 0x23, 0xb3, 0x10}},
+       {
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11},
+               []byte{0x17, 0x66, 0x8d, 0xfc, 0x72, 0x92, 0x53, 0x2d}},
+       {
+               []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
+               []byte{0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               []byte{0xb4, 0xfd, 0x23, 0x16, 0x47, 0xa5, 0xbe, 0xc0}},
+       {
+               []byte{0x0e, 0x32, 0x92, 0x32, 0xea, 0x6d, 0x0d, 0x73},
+               []byte{0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87},
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}},
+       {
+               []byte{0x73, 0x65, 0x63, 0x52, 0x33, 0x74, 0x24, 0x3b}, // "secR3t$;"
+               []byte{0x61, 0x20, 0x74, 0x65, 0x73, 0x74, 0x31, 0x32}, // "a test12"
+               []byte{0x37, 0x0d, 0xee, 0x2c, 0x1f, 0xb4, 0xf7, 0xa5}},
+       {
+               []byte{0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68}, // "abcdefgh"
+               []byte{0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68}, // "abcdefgh"
+               []byte{0x2a, 0x8d, 0x69, 0xde, 0x9d, 0x5f, 0xdf, 0xf9}},
+       {
+               []byte{0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68}, // "abcdefgh"
+               []byte{0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38}, // "12345678"
+               []byte{0x21, 0xc6, 0x0d, 0xa5, 0x34, 0x24, 0x8b, 0xce}},
+       {
+               []byte{0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38}, // "12345678"
+               []byte{0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68}, // "abcdefgh"
+               []byte{0x94, 0xd4, 0x43, 0x6b, 0xc3, 0xb5, 0xb6, 0x93}},
+       {
+               []byte{0x1f, 0x79, 0x90, 0x5f, 0x88, 0x01, 0xc8, 0x88}, // random
+               []byte{0xc7, 0x46, 0x18, 0x73, 0xaf, 0x48, 0x5f, 0xb3}, // random
+               []byte{0xb0, 0x93, 0x50, 0x88, 0xf9, 0x92, 0x44, 0x6a}},
+       {
+               []byte{0xe6, 0xf4, 0xf2, 0xdb, 0x31, 0x42, 0x53, 0x01}, // random
+               []byte{0xff, 0x3d, 0x25, 0x50, 0x12, 0xe3, 0x4a, 0xc5}, // random
+               []byte{0x86, 0x08, 0xd3, 0xd1, 0x6c, 0x2f, 0xd2, 0x55}},
+       {
+               []byte{0x69, 0xc1, 0x9d, 0xc1, 0x15, 0xc5, 0xfb, 0x2b}, // random
+               []byte{0x1a, 0x22, 0x5c, 0xaf, 0x1f, 0x1d, 0xa3, 0xf9}, // random
+               []byte{0x64, 0xba, 0x31, 0x67, 0x56, 0x91, 0x1e, 0xa7}},
+       {
+               []byte{0x6e, 0x5e, 0xe2, 0x47, 0xc4, 0xbf, 0xf6, 0x51}, // random
+               []byte{0x11, 0xc9, 0x57, 0xff, 0x66, 0x89, 0x0e, 0xf0}, // random
+               []byte{0x94, 0xc5, 0x35, 0xb2, 0xc5, 0x8b, 0x39, 0x72}},
+}
+
+var weakKeyTests = []CryptTest{
+       {
+               []byte{0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               []byte{0x55, 0x74, 0xc0, 0xbd, 0x7c, 0xdf, 0xf7, 0x39}, // random
+               nil},
+       {
+               []byte{0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe},
+               []byte{0xe8, 0xe1, 0xa7, 0xc1, 0xde, 0x11, 0x89, 0xaa}, // random
+               nil},
+       {
+               []byte{0xe0, 0xe0, 0xe0, 0xe0, 0xf1, 0xf1, 0xf1, 0xf1},
+               []byte{0x50, 0x6a, 0x4b, 0x94, 0x3b, 0xed, 0x7d, 0xdc}, // random
+               nil},
+       {
+               []byte{0x1f, 0x1f, 0x1f, 0x1f, 0x0e, 0x0e, 0x0e, 0x0e},
+               []byte{0x88, 0x81, 0x56, 0x38, 0xec, 0x3b, 0x1c, 0x97}, // random
+               nil},
+       {
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x17, 0xa0, 0x83, 0x62, 0x32, 0xfe, 0x9a, 0x0b}, // random
+               nil},
+       {
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0xca, 0x8f, 0xca, 0x1f, 0x50, 0xc5, 0x7b, 0x49}, // random
+               nil},
+       {
+               []byte{0xe1, 0xe1, 0xe1, 0xe1, 0xf0, 0xf0, 0xf0, 0xf0},
+               []byte{0xb1, 0xea, 0xad, 0x7d, 0xe7, 0xc3, 0x7a, 0x43}, // random
+               nil},
+       {
+               []byte{0x1e, 0x1e, 0x1e, 0x1e, 0x0f, 0x0f, 0x0f, 0x0f},
+               []byte{0xae, 0x74, 0x7d, 0x6f, 0xef, 0x16, 0xbb, 0x81}, // random
+               nil},
+}
+
+var semiWeakKeyTests = []CryptTest{
+       // key and out contain the semi-weak key pair
+       {
+               []byte{0x01, 0x1f, 0x01, 0x1f, 0x01, 0x0e, 0x01, 0x0e},
+               []byte{0x12, 0xfa, 0x31, 0x16, 0xf9, 0xc5, 0x0a, 0xe4}, // random
+               []byte{0x1f, 0x01, 0x1f, 0x01, 0x0e, 0x01, 0x0e, 0x01}},
+       {
+               []byte{0x01, 0xe0, 0x01, 0xe0, 0x01, 0xf1, 0x01, 0xf1},
+               []byte{0xb0, 0x4c, 0x7a, 0xee, 0xd2, 0xe5, 0x4d, 0xb7}, // random
+               []byte{0xe0, 0x01, 0xe0, 0x01, 0xf1, 0x01, 0xf1, 0x01}},
+       {
+               []byte{0x01, 0xfe, 0x01, 0xfe, 0x01, 0xfe, 0x01, 0xfe},
+               []byte{0xa4, 0x81, 0xcd, 0xb1, 0x64, 0x6f, 0xd3, 0xbc}, // random
+               []byte{0xfe, 0x01, 0xfe, 0x01, 0xfe, 0x01, 0xfe, 0x01}},
+       {
+               []byte{0x1f, 0xe0, 0x1f, 0xe0, 0x0e, 0xf1, 0x0e, 0xf1},
+               []byte{0xee, 0x27, 0xdd, 0x88, 0x4c, 0x22, 0xcd, 0xce}, // random
+               []byte{0xe0, 0x1f, 0xe0, 0x1f, 0xf1, 0x0e, 0xf1, 0x0e}},
+       {
+               []byte{0x1f, 0xfe, 0x1f, 0xfe, 0x0e, 0xfe, 0x0e, 0xfe},
+               []byte{0x19, 0x3d, 0xcf, 0x97, 0x70, 0xfb, 0xab, 0xe1}, // random
+               []byte{0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x0e, 0xfe, 0x0e}},
+       {
+               []byte{0xe0, 0xfe, 0xe0, 0xfe, 0xf1, 0xfe, 0xf1, 0xfe},
+               []byte{0x7c, 0x82, 0x69, 0xe4, 0x1e, 0x86, 0x99, 0xd7}, // random
+               []byte{0xfe, 0xe0, 0xfe, 0xe0, 0xfe, 0xf1, 0xfe, 0xf1}},
+}
+
+// some custom tests for TripleDES
+var encryptTripleDESTests = []CryptTest{
+       {
+               []byte{
+                       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                       0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x92, 0x95, 0xb5, 0x9b, 0xb3, 0x84, 0x73, 0x6e}},
+       {
+               []byte{
+                       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                       0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0xc1, 0x97, 0xf5, 0x58, 0x74, 0x8a, 0x20, 0xe7}},
+       {
+               []byte{
+                       0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                       0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x3e, 0x68, 0x0a, 0xa7, 0x8b, 0x75, 0xdf, 0x18}},
+       {
+               []byte{
+                       0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                       0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+               []byte{0x6d, 0x6a, 0x4a, 0x64, 0x4c, 0x7b, 0x8c, 0x91}},
+       {
+               []byte{ // "abcdefgh12345678ABCDEFGH"
+                       0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
+                       0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
+                       0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48},
+               []byte{0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30}, // "00000000"
+               []byte{0xe4, 0x61, 0xb7, 0x59, 0x68, 0x8b, 0xff, 0x66}},
+       {
+               []byte{ // "abcdefgh12345678ABCDEFGH"
+                       0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
+                       0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
+                       0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48},
+               []byte{0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38}, // "12345678"
+               []byte{0xdb, 0xd0, 0x92, 0xde, 0xf8, 0x34, 0xff, 0x58}},
+       {
+               []byte{ // "abcdefgh12345678ABCDEFGH"
+                       0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
+                       0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
+                       0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48},
+               []byte{0xf0, 0xc5, 0x82, 0x22, 0xd3, 0xe6, 0x12, 0xd2}, // random
+               []byte{0xba, 0xe4, 0x41, 0xb1, 0x3c, 0x37, 0x4d, 0xf4}},
+       {
+               []byte{ // random
+                       0xd3, 0x7d, 0x45, 0xee, 0x22, 0xe9, 0xcf, 0x52,
+                       0xf4, 0x65, 0xa2, 0x4f, 0x70, 0xd1, 0x81, 0x8a,
+                       0x3d, 0xbe, 0x2f, 0x39, 0xc7, 0x71, 0xd2, 0xe9},
+               []byte{0x49, 0x53, 0xc3, 0xe9, 0x78, 0xdf, 0x9f, 0xaf}, // random
+               []byte{0x53, 0x40, 0x51, 0x24, 0xd8, 0x3c, 0xf9, 0x88}},
+       {
+               []byte{ // random
+                       0xcb, 0x10, 0x7d, 0xda, 0x7e, 0x96, 0x57, 0x0a,
+                       0xe8, 0xeb, 0xe8, 0x07, 0x8e, 0x87, 0xd3, 0x57,
+                       0xb2, 0x61, 0x12, 0xb8, 0x2a, 0x90, 0xb7, 0x2f},
+               []byte{0xa3, 0xc2, 0x60, 0xb1, 0x0b, 0xb7, 0x28, 0x6e}, // random
+               []byte{0x56, 0x73, 0x7d, 0xfb, 0xb5, 0xa1, 0xc3, 0xde}},
+}
+
+// NIST Special Publication 800-20, Appendix A
+// Key for use with Table A.1 tests
+var tableA1Key = []byte{
+       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+}
+
+// Table A.1 Resulting Ciphertext from the Variable Plaintext Known Answer Test
+var tableA1Tests = []CryptTest{
+       {nil, // 0
+               []byte{0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x95, 0xf8, 0xa5, 0xe5, 0xdd, 0x31, 0xd9, 0x00}},
+       {nil, // 1
+               []byte{0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xdd, 0x7f, 0x12, 0x1c, 0xa5, 0x01, 0x56, 0x19}},
+       {nil, // 2
+               []byte{0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x2e, 0x86, 0x53, 0x10, 0x4f, 0x38, 0x34, 0xea}},
+       {nil, // 3
+               []byte{0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x4b, 0xd3, 0x88, 0xff, 0x6c, 0xd8, 0x1d, 0x4f}},
+       {nil, // 4
+               []byte{0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x20, 0xb9, 0xe7, 0x67, 0xb2, 0xfb, 0x14, 0x56}},
+       {nil, // 5
+               []byte{0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x55, 0x57, 0x93, 0x80, 0xd7, 0x71, 0x38, 0xef}},
+       {nil, // 6
+               []byte{0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x6c, 0xc5, 0xde, 0xfa, 0xaf, 0x04, 0x51, 0x2f}},
+       {nil, // 7
+               []byte{0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x0d, 0x9f, 0x27, 0x9b, 0xa5, 0xd8, 0x72, 0x60}},
+       {nil, // 8
+               []byte{0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xd9, 0x03, 0x1b, 0x02, 0x71, 0xbd, 0x5a, 0x0a}},
+       {nil, // 9
+               []byte{0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x42, 0x42, 0x50, 0xb3, 0x7c, 0x3d, 0xd9, 0x51}},
+       {nil, // 10
+               []byte{0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xb8, 0x06, 0x1b, 0x7e, 0xcd, 0x9a, 0x21, 0xe5}},
+       {nil, // 11
+               []byte{0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xf1, 0x5d, 0x0f, 0x28, 0x6b, 0x65, 0xbd, 0x28}},
+       {nil, // 12
+               []byte{0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xad, 0xd0, 0xcc, 0x8d, 0x6e, 0x5d, 0xeb, 0xa1}},
+       {nil, // 13
+               []byte{0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xe6, 0xd5, 0xf8, 0x27, 0x52, 0xad, 0x63, 0xd1}},
+       {nil, // 14
+               []byte{0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xec, 0xbf, 0xe3, 0xbd, 0x3f, 0x59, 0x1a, 0x5e}},
+       {nil, // 15
+               []byte{0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xf3, 0x56, 0x83, 0x43, 0x79, 0xd1, 0x65, 0xcd}},
+       {nil, // 16
+               []byte{0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x2b, 0x9f, 0x98, 0x2f, 0x20, 0x03, 0x7f, 0xa9}},
+       {nil, // 17
+               []byte{0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x88, 0x9d, 0xe0, 0x68, 0xa1, 0x6f, 0x0b, 0xe6}},
+       {nil, // 18
+               []byte{0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xe1, 0x9e, 0x27, 0x5d, 0x84, 0x6a, 0x12, 0x98}},
+       {nil, // 19
+               []byte{0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x32, 0x9a, 0x8e, 0xd5, 0x23, 0xd7, 0x1a, 0xec}},
+       {nil, // 20
+               []byte{0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xe7, 0xfc, 0xe2, 0x25, 0x57, 0xd2, 0x3c, 0x97}},
+       {nil, // 21
+               []byte{0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x12, 0xa9, 0xf5, 0x81, 0x7f, 0xf2, 0xd6, 0x5d}},
+       {nil, // 22
+               []byte{0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xa4, 0x84, 0xc3, 0xad, 0x38, 0xdc, 0x9c, 0x19}},
+       {nil, // 23
+               []byte{0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xfb, 0xe0, 0x0a, 0x8a, 0x1e, 0xf8, 0xad, 0x72}},
+       {nil, // 24
+               []byte{0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x75, 0x0d, 0x07, 0x94, 0x07, 0x52, 0x13, 0x63}},
+       {nil, // 25
+               []byte{0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x64, 0xfe, 0xed, 0x9c, 0x72, 0x4c, 0x2f, 0xaf}},
+       {nil, // 26
+               []byte{0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xf0, 0x2b, 0x26, 0x3b, 0x32, 0x8e, 0x2b, 0x60}},
+       {nil, // 27
+               []byte{0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00},
+               []byte{0x9d, 0x64, 0x55, 0x5a, 0x9a, 0x10, 0xb8, 0x52}},
+       {nil, // 28
+               []byte{0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xd1, 0x06, 0xff, 0x0b, 0xed, 0x52, 0x55, 0xd7}},
+       {nil, // 29
+               []byte{0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xe1, 0x65, 0x2c, 0x6b, 0x13, 0x8c, 0x64, 0xa5}},
+       {nil, // 30
+               []byte{0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xe4, 0x28, 0x58, 0x11, 0x86, 0xec, 0x8f, 0x46}},
+       {nil, // 31
+               []byte{0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00},
+               []byte{0xae, 0xb5, 0xf5, 0xed, 0xe2, 0x2d, 0x1a, 0x36}},
+       {nil, // 32
+               []byte{0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00},
+               []byte{0xe9, 0x43, 0xd7, 0x56, 0x8a, 0xec, 0x0c, 0x5c}},
+       {nil, // 33
+               []byte{0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00},
+               []byte{0xdf, 0x98, 0xc8, 0x27, 0x6f, 0x54, 0xb0, 0x4b}},
+       {nil, // 34
+               []byte{0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00},
+               []byte{0xb1, 0x60, 0xe4, 0x68, 0x0f, 0x6c, 0x69, 0x6f}},
+       {nil, // 35
+               []byte{0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00},
+               []byte{0xfa, 0x07, 0x52, 0xb0, 0x7d, 0x9c, 0x4a, 0xb8}},
+       {nil, // 36
+               []byte{0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00},
+               []byte{0xca, 0x3a, 0x2b, 0x03, 0x6d, 0xbc, 0x85, 0x02}},
+       {nil, // 37
+               []byte{0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00},
+               []byte{0x5e, 0x09, 0x05, 0x51, 0x7b, 0xb5, 0x9b, 0xcf}},
+       {nil, // 38
+               []byte{0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00},
+               []byte{0x81, 0x4e, 0xeb, 0x3b, 0x91, 0xd9, 0x07, 0x26}},
+       {nil, // 39
+               []byte{0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00},
+               []byte{0x4d, 0x49, 0xdb, 0x15, 0x32, 0x91, 0x9c, 0x9f}},
+       {nil, // 40
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00},
+               []byte{0x25, 0xeb, 0x5f, 0xc3, 0xf8, 0xcf, 0x06, 0x21}},
+       {nil, // 41
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00},
+               []byte{0xab, 0x6a, 0x20, 0xc0, 0x62, 0x0d, 0x1c, 0x6f}},
+       {nil, // 42
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00},
+               []byte{0x79, 0xe9, 0x0d, 0xbc, 0x98, 0xf9, 0x2c, 0xca}},
+       {nil, // 43
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00},
+               []byte{0x86, 0x6e, 0xce, 0xdd, 0x80, 0x72, 0xbb, 0x0e}},
+       {nil, // 44
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00},
+               []byte{0x8b, 0x54, 0x53, 0x6f, 0x2f, 0x3e, 0x64, 0xa8}},
+       {nil, // 45
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00},
+               []byte{0xea, 0x51, 0xd3, 0x97, 0x55, 0x95, 0xb8, 0x6b}},
+       {nil, // 46
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00},
+               []byte{0xca, 0xff, 0xc6, 0xac, 0x45, 0x42, 0xde, 0x31}},
+       {nil, // 47
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00},
+               []byte{0x8d, 0xd4, 0x5a, 0x2d, 0xdf, 0x90, 0x79, 0x6c}},
+       {nil, // 48
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00},
+               []byte{0x10, 0x29, 0xd5, 0x5e, 0x88, 0x0e, 0xc2, 0xd0}},
+       {nil, // 49
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00},
+               []byte{0x5d, 0x86, 0xcb, 0x23, 0x63, 0x9d, 0xbe, 0xa9}},
+       {nil, // 50
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00},
+               []byte{0x1d, 0x1c, 0xa8, 0x53, 0xae, 0x7c, 0x0c, 0x5f}},
+       {nil, // 51
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00},
+               []byte{0xce, 0x33, 0x23, 0x29, 0x24, 0x8f, 0x32, 0x28}},
+       {nil, // 52
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00},
+               []byte{0x84, 0x05, 0xd1, 0xab, 0xe2, 0x4f, 0xb9, 0x42}},
+       {nil, // 53
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00},
+               []byte{0xe6, 0x43, 0xd7, 0x80, 0x90, 0xca, 0x42, 0x07}},
+       {nil, // 54
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00},
+               []byte{0x48, 0x22, 0x1b, 0x99, 0x37, 0x74, 0x8a, 0x23}},
+       {nil, // 55
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00},
+               []byte{0xdd, 0x7c, 0x0b, 0xbd, 0x61, 0xfa, 0xfd, 0x54}},
+       {nil, // 56
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80},
+               []byte{0x2f, 0xbc, 0x29, 0x1a, 0x57, 0x0d, 0xb5, 0xc4}},
+       {nil, // 57
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40},
+               []byte{0xe0, 0x7c, 0x30, 0xd7, 0xe4, 0xe2, 0x6e, 0x12}},
+       {nil, // 58
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20},
+               []byte{0x09, 0x53, 0xe2, 0x25, 0x8e, 0x8e, 0x90, 0xa1}},
+       {nil, // 59
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10},
+               []byte{0x5b, 0x71, 0x1b, 0xc4, 0xce, 0xeb, 0xf2, 0xee}},
+       {nil, // 60
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08},
+               []byte{0xcc, 0x08, 0x3f, 0x1e, 0x6d, 0x9e, 0x85, 0xf6}},
+       {nil, // 61
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04},
+               []byte{0xd2, 0xfd, 0x88, 0x67, 0xd5, 0x0d, 0x2d, 0xfe}},
+       {nil, // 62
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
+               []byte{0x06, 0xe7, 0xea, 0x22, 0xce, 0x92, 0x70, 0x8f}},
+       {nil, // 63
+               []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
+               []byte{0x16, 0x6b, 0x40, 0xb4, 0x4a, 0xba, 0x4b, 0xd6}},
+}
+
+// Plaintext for use with Table A.2 tests
+var tableA2Plaintext = []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+
+// Table A.2 Resulting Ciphertext from the Variable Key Known Answer Test
+var tableA2Tests = []CryptTest{
+       { // 0
+               []byte{
+                       0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x95, 0xa8, 0xd7, 0x28, 0x13, 0xda, 0xa9, 0x4d}},
+       { // 1
+               []byte{
+                       0x40, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x40, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x40, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x0e, 0xec, 0x14, 0x87, 0xdd, 0x8c, 0x26, 0xd5}},
+       { // 2
+               []byte{
+                       0x20, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x20, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x20, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x7a, 0xd1, 0x6f, 0xfb, 0x79, 0xc4, 0x59, 0x26}},
+       { // 3
+               []byte{
+                       0x10, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x10, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x10, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xd3, 0x74, 0x62, 0x94, 0xca, 0x6a, 0x6c, 0xf3}},
+       { // 4
+               []byte{
+                       0x08, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x08, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x08, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x80, 0x9f, 0x5f, 0x87, 0x3c, 0x1f, 0xd7, 0x61}},
+       { // 5
+               []byte{
+                       0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xc0, 0x2f, 0xaf, 0xfe, 0xc9, 0x89, 0xd1, 0xfc}},
+       { // 6
+               []byte{
+                       0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x46, 0x15, 0xaa, 0x1d, 0x33, 0xe7, 0x2f, 0x10}},
+       { // 7
+               []byte{
+                       0x01, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x20, 0x55, 0x12, 0x33, 0x50, 0xc0, 0x08, 0x58}},
+       { // 8
+               []byte{
+                       0x01, 0x40, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x40, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x40, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xdf, 0x3b, 0x99, 0xd6, 0x57, 0x73, 0x97, 0xc8}},
+       { // 9
+               []byte{
+                       0x01, 0x20, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x20, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x20, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x31, 0xfe, 0x17, 0x36, 0x9b, 0x52, 0x88, 0xc9}},
+       { // 10
+               []byte{
+                       0x01, 0x10, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x10, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x10, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xdf, 0xdd, 0x3c, 0xc6, 0x4d, 0xae, 0x16, 0x42}},
+       { // 11
+               []byte{
+                       0x01, 0x08, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x08, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x08, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x17, 0x8c, 0x83, 0xce, 0x2b, 0x39, 0x9d, 0x94}},
+       { // 12
+               []byte{
+                       0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x50, 0xf6, 0x36, 0x32, 0x4a, 0x9b, 0x7f, 0x80}},
+       { // 13
+               []byte{
+                       0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xa8, 0x46, 0x8e, 0xe3, 0xbc, 0x18, 0xf0, 0x6d}},
+       { // 14
+               []byte{
+                       0x01, 0x01, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xa2, 0xdc, 0x9e, 0x92, 0xfd, 0x3c, 0xde, 0x92}},
+       { // 15
+               []byte{
+                       0x01, 0x01, 0x40, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x40, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x40, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xca, 0xc0, 0x9f, 0x79, 0x7d, 0x03, 0x12, 0x87}},
+       { // 16
+               []byte{
+                       0x01, 0x01, 0x20, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x20, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x20, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x90, 0xba, 0x68, 0x0b, 0x22, 0xae, 0xb5, 0x25}},
+       { // 17
+               []byte{
+                       0x01, 0x01, 0x10, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x10, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x10, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xce, 0x7a, 0x24, 0xf3, 0x50, 0xe2, 0x80, 0xb6}},
+       { // 18
+               []byte{
+                       0x01, 0x01, 0x08, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x08, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x08, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x88, 0x2b, 0xff, 0x0a, 0xa0, 0x1a, 0x0b, 0x87}},
+       { // 19
+               []byte{
+                       0x01, 0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x25, 0x61, 0x02, 0x88, 0x92, 0x45, 0x11, 0xc2}},
+       { // 20
+               []byte{
+                       0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xc7, 0x15, 0x16, 0xc2, 0x9c, 0x75, 0xd1, 0x70}},
+       { // 21
+               []byte{
+                       0x01, 0x01, 0x01, 0x80, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x80, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x80, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x51, 0x99, 0xc2, 0x9a, 0x52, 0xc9, 0xf0, 0x59}},
+       { // 22
+               []byte{
+                       0x01, 0x01, 0x01, 0x40, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x40, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x40, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xc2, 0x2f, 0x0a, 0x29, 0x4a, 0x71, 0xf2, 0x9f}},
+       { // 23
+               []byte{
+                       0x01, 0x01, 0x01, 0x20, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x20, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x20, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xee, 0x37, 0x14, 0x83, 0x71, 0x4c, 0x02, 0xea}},
+       { // 24
+               []byte{
+                       0x01, 0x01, 0x01, 0x10, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x10, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x10, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xa8, 0x1f, 0xbd, 0x44, 0x8f, 0x9e, 0x52, 0x2f}},
+       { // 25
+               []byte{
+                       0x01, 0x01, 0x01, 0x08, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x08, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x08, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x4f, 0x64, 0x4c, 0x92, 0xe1, 0x92, 0xdf, 0xed}},
+       { // 26
+               []byte{
+                       0x01, 0x01, 0x01, 0x04, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x04, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x04, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x1a, 0xfa, 0x9a, 0x66, 0xa6, 0xdf, 0x92, 0xae}},
+       { // 27
+               []byte{
+                       0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xb3, 0xc1, 0xcc, 0x71, 0x5c, 0xb8, 0x79, 0xd8}},
+       { // 28
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x80, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x80, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x80, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x19, 0xd0, 0x32, 0xe6, 0x4a, 0xb0, 0xbd, 0x8b}},
+       { // 29
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x40, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x40, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x40, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x3c, 0xfa, 0xa7, 0xa7, 0xdc, 0x87, 0x20, 0xdc}},
+       { // 30
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x20, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x20, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x20, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0xb7, 0x26, 0x5f, 0x7f, 0x44, 0x7a, 0xc6, 0xf3}},
+       { // 31
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x10, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x10, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x10, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x9d, 0xb7, 0x3b, 0x3c, 0x0d, 0x16, 0x3f, 0x54}},
+       { // 32
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x08, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x08, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x08, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x81, 0x81, 0xb6, 0x5b, 0xab, 0xf4, 0xa9, 0x75}},
+       { // 33
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x04, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x04, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x04, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x93, 0xc9, 0xb6, 0x40, 0x42, 0xea, 0xa2, 0x40}},
+       { // 34
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01},
+               nil,
+               []byte{0x55, 0x70, 0x53, 0x08, 0x29, 0x70, 0x55, 0x92}},
+       { // 35
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x80, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x80, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x80, 0x01, 0x01},
+               nil,
+               []byte{0x86, 0x38, 0x80, 0x9e, 0x87, 0x87, 0x87, 0xa0}},
+       { // 36
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x40, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x40, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x40, 0x01, 0x01},
+               nil,
+               []byte{0x41, 0xb9, 0xa7, 0x9a, 0xf7, 0x9a, 0xc2, 0x08}},
+       { // 37
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x20, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x20, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x20, 0x01, 0x01},
+               nil,
+               []byte{0x7a, 0x9b, 0xe4, 0x2f, 0x20, 0x09, 0xa8, 0x92}},
+       { // 38
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x10, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x10, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x10, 0x01, 0x01},
+               nil,
+               []byte{0x29, 0x03, 0x8d, 0x56, 0xba, 0x6d, 0x27, 0x45}},
+       { // 39
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x08, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x08, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x08, 0x01, 0x01},
+               nil,
+               []byte{0x54, 0x95, 0xc6, 0xab, 0xf1, 0xe5, 0xdf, 0x51}},
+       { // 40
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x01, 0x01},
+               nil,
+               []byte{0xae, 0x13, 0xdb, 0xd5, 0x61, 0x48, 0x89, 0x33}},
+       { // 41
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01},
+               nil,
+               []byte{0x02, 0x4d, 0x1f, 0xfa, 0x89, 0x04, 0xe3, 0x89}},
+       { // 42
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x80, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x80, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x80, 0x01},
+               nil,
+               []byte{0xd1, 0x39, 0x97, 0x12, 0xf9, 0x9b, 0xf0, 0x2e}},
+       { // 43
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x40, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x40, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x40, 0x01},
+               nil,
+               []byte{0x14, 0xc1, 0xd7, 0xc1, 0xcf, 0xfe, 0xc7, 0x9e}},
+       { // 44
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x20, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x20, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x20, 0x01},
+               nil,
+               []byte{0x1d, 0xe5, 0x27, 0x9d, 0xae, 0x3b, 0xed, 0x6f}},
+       { // 45
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x10, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x10, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x10, 0x01},
+               nil,
+               []byte{0xe9, 0x41, 0xa3, 0x3f, 0x85, 0x50, 0x13, 0x03}},
+       { // 46
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x08, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x08, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x08, 0x01},
+               nil,
+               []byte{0xda, 0x99, 0xdb, 0xbc, 0x9a, 0x03, 0xf3, 0x79}},
+       { // 47
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x01},
+               nil,
+               []byte{0xb7, 0xfc, 0x92, 0xf9, 0x1d, 0x8e, 0x92, 0xe9}},
+       { // 48
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01},
+               nil,
+               []byte{0xae, 0x8e, 0x5c, 0xaa, 0x3c, 0xa0, 0x4e, 0x85}},
+       { // 49
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x80,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x80,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x80},
+               nil,
+               []byte{0x9c, 0xc6, 0x2d, 0xf4, 0x3b, 0x6e, 0xed, 0x74}},
+       { // 50
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x40,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x40,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x40},
+               nil,
+               []byte{0xd8, 0x63, 0xdb, 0xb5, 0xc5, 0x9a, 0x91, 0xa0}},
+       { // 50
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x20,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x20,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x20},
+               nil,
+               []byte{0xa1, 0xab, 0x21, 0x90, 0x54, 0x5b, 0x91, 0xd7}},
+       { // 52
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x10,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x10,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x10},
+               nil,
+               []byte{0x08, 0x75, 0x04, 0x1e, 0x64, 0xc5, 0x70, 0xf7}},
+       { // 53
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x08,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x08,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x08},
+               nil,
+               []byte{0x5a, 0x59, 0x45, 0x28, 0xbe, 0xbe, 0xf1, 0xcc}},
+       { // 54
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04},
+               nil,
+               []byte{0xfc, 0xdb, 0x32, 0x91, 0xde, 0x21, 0xf0, 0xc0}},
+       { // 55
+               []byte{
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02,
+                       0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02},
+               nil,
+               []byte{0x86, 0x9e, 0xfd, 0x7f, 0x9f, 0x26, 0x5a, 0x09}},
+}
+
+// Plaintext for use with Table A.3 tests
+var tableA3Plaintext = []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+
+// Table A.3 Values To Be Used for the Permutation Operation Known Answer Test
+var tableA3Tests = []CryptTest{
+       { // 0
+               []byte{
+                       0x10, 0x46, 0x91, 0x34, 0x89, 0x98, 0x01, 0x31,
+                       0x10, 0x46, 0x91, 0x34, 0x89, 0x98, 0x01, 0x31,
+                       0x10, 0x46, 0x91, 0x34, 0x89, 0x98, 0x01, 0x31,
+               },
+               nil,
+               []byte{0x88, 0xd5, 0x5e, 0x54, 0xf5, 0x4c, 0x97, 0xb4}},
+       { // 1
+               []byte{
+                       0x10, 0x07, 0x10, 0x34, 0x89, 0x98, 0x80, 0x20,
+                       0x10, 0x07, 0x10, 0x34, 0x89, 0x98, 0x80, 0x20,
+                       0x10, 0x07, 0x10, 0x34, 0x89, 0x98, 0x80, 0x20,
+               },
+               nil,
+               []byte{0x0c, 0x0c, 0xc0, 0x0c, 0x83, 0xea, 0x48, 0xfd}},
+       { // 2
+               []byte{
+                       0x10, 0x07, 0x10, 0x34, 0xc8, 0x98, 0x01, 0x20,
+                       0x10, 0x07, 0x10, 0x34, 0xc8, 0x98, 0x01, 0x20,
+                       0x10, 0x07, 0x10, 0x34, 0xc8, 0x98, 0x01, 0x20,
+               },
+               nil,
+               []byte{0x83, 0xbc, 0x8e, 0xf3, 0xa6, 0x57, 0x01, 0x83}},
+       { // 3
+               []byte{
+                       0x10, 0x46, 0x10, 0x34, 0x89, 0x98, 0x80, 0x20,
+                       0x10, 0x46, 0x10, 0x34, 0x89, 0x98, 0x80, 0x20,
+                       0x10, 0x46, 0x10, 0x34, 0x89, 0x98, 0x80, 0x20,
+               },
+               nil,
+               []byte{0xdf, 0x72, 0x5d, 0xca, 0xd9, 0x4e, 0xa2, 0xe9}},
+       { // 4
+               []byte{
+                       0x10, 0x86, 0x91, 0x15, 0x19, 0x19, 0x01, 0x01,
+                       0x10, 0x86, 0x91, 0x15, 0x19, 0x19, 0x01, 0x01,
+                       0x10, 0x86, 0x91, 0x15, 0x19, 0x19, 0x01, 0x01,
+               },
+               nil,
+               []byte{0xe6, 0x52, 0xb5, 0x3b, 0x55, 0x0b, 0xe8, 0xb0}},
+       { // 5
+               []byte{
+                       0x10, 0x86, 0x91, 0x15, 0x19, 0x58, 0x01, 0x01,
+                       0x10, 0x86, 0x91, 0x15, 0x19, 0x58, 0x01, 0x01,
+                       0x10, 0x86, 0x91, 0x15, 0x19, 0x58, 0x01, 0x01,
+               },
+               nil,
+               []byte{0xaf, 0x52, 0x71, 0x20, 0xc4, 0x85, 0xcb, 0xb0}},
+       { // 6
+               []byte{
+                       0x51, 0x07, 0xb0, 0x15, 0x19, 0x58, 0x01, 0x01,
+                       0x51, 0x07, 0xb0, 0x15, 0x19, 0x58, 0x01, 0x01,
+                       0x51, 0x07, 0xb0, 0x15, 0x19, 0x58, 0x01, 0x01,
+               },
+               nil,
+               []byte{0x0f, 0x04, 0xce, 0x39, 0x3d, 0xb9, 0x26, 0xd5}},
+       { // 7
+               []byte{
+                       0x10, 0x07, 0xb0, 0x15, 0x19, 0x19, 0x01, 0x01,
+                       0x10, 0x07, 0xb0, 0x15, 0x19, 0x19, 0x01, 0x01,
+                       0x10, 0x07, 0xb0, 0x15, 0x19, 0x19, 0x01, 0x01,
+               },
+               nil,
+               []byte{0xc9, 0xf0, 0x0f, 0xfc, 0x74, 0x07, 0x90, 0x67}},
+       { // 8
+               []byte{
+                       0x31, 0x07, 0x91, 0x54, 0x98, 0x08, 0x01, 0x01,
+                       0x31, 0x07, 0x91, 0x54, 0x98, 0x08, 0x01, 0x01,
+                       0x31, 0x07, 0x91, 0x54, 0x98, 0x08, 0x01, 0x01,
+               },
+               nil,
+               []byte{0x7c, 0xfd, 0x82, 0xa5, 0x93, 0x25, 0x2b, 0x4e}},
+       { // 9
+               []byte{
+                       0x31, 0x07, 0x91, 0x94, 0x98, 0x08, 0x01, 0x01,
+                       0x31, 0x07, 0x91, 0x94, 0x98, 0x08, 0x01, 0x01,
+                       0x31, 0x07, 0x91, 0x94, 0x98, 0x08, 0x01, 0x01,
+               },
+               nil,
+               []byte{0xcb, 0x49, 0xa2, 0xf9, 0xe9, 0x13, 0x63, 0xe3}},
+       { // 10
+               []byte{
+                       0x10, 0x07, 0x91, 0x15, 0xb9, 0x08, 0x01, 0x40,
+                       0x10, 0x07, 0x91, 0x15, 0xb9, 0x08, 0x01, 0x40,
+                       0x10, 0x07, 0x91, 0x15, 0xb9, 0x08, 0x01, 0x40,
+               },
+               nil,
+               []byte{0x00, 0xb5, 0x88, 0xbe, 0x70, 0xd2, 0x3f, 0x56}},
+       { // 11
+               []byte{
+                       0x31, 0x07, 0x91, 0x15, 0x98, 0x08, 0x01, 0x40,
+                       0x31, 0x07, 0x91, 0x15, 0x98, 0x08, 0x01, 0x40,
+                       0x31, 0x07, 0x91, 0x15, 0x98, 0x08, 0x01, 0x40,
+               },
+               nil,
+               []byte{0x40, 0x6a, 0x9a, 0x6a, 0xb4, 0x33, 0x99, 0xae}},
+       { // 12
+               []byte{
+                       0x10, 0x07, 0xd0, 0x15, 0x89, 0x98, 0x01, 0x01,
+                       0x10, 0x07, 0xd0, 0x15, 0x89, 0x98, 0x01, 0x01,
+                       0x10, 0x07, 0xd0, 0x15, 0x89, 0x98, 0x01, 0x01,
+               },
+               nil,
+               []byte{0x6c, 0xb7, 0x73, 0x61, 0x1d, 0xca, 0x9a, 0xda}},
+       { // 13
+               []byte{
+                       0x91, 0x07, 0x91, 0x15, 0x89, 0x98, 0x01, 0x01,
+                       0x91, 0x07, 0x91, 0x15, 0x89, 0x98, 0x01, 0x01,
+                       0x91, 0x07, 0x91, 0x15, 0x89, 0x98, 0x01, 0x01,
+               },
+               nil,
+               []byte{0x67, 0xfd, 0x21, 0xc1, 0x7d, 0xbb, 0x5d, 0x70}},
+       { // 14
+               []byte{
+                       0x91, 0x07, 0xd0, 0x15, 0x89, 0x19, 0x01, 0x01,
+                       0x91, 0x07, 0xd0, 0x15, 0x89, 0x19, 0x01, 0x01,
+                       0x91, 0x07, 0xd0, 0x15, 0x89, 0x19, 0x01, 0x01,
+               },
+               nil,
+               []byte{0x95, 0x92, 0xcb, 0x41, 0x10, 0x43, 0x07, 0x87}},
+       { // 15
+               []byte{
+                       0x10, 0x07, 0xd0, 0x15, 0x98, 0x98, 0x01, 0x20,
+                       0x10, 0x07, 0xd0, 0x15, 0x98, 0x98, 0x01, 0x20,
+                       0x10, 0x07, 0xd0, 0x15, 0x98, 0x98, 0x01, 0x20,
+               },
+               nil,
+               []byte{0xa6, 0xb7, 0xff, 0x68, 0xa3, 0x18, 0xdd, 0xd3}},
+       { // 16
+               []byte{
+                       0x10, 0x07, 0x94, 0x04, 0x98, 0x19, 0x01, 0x01,
+                       0x10, 0x07, 0x94, 0x04, 0x98, 0x19, 0x01, 0x01,
+                       0x10, 0x07, 0x94, 0x04, 0x98, 0x19, 0x01, 0x01,
+               },
+               nil,
+               []byte{0x4d, 0x10, 0x21, 0x96, 0xc9, 0x14, 0xca, 0x16}},
+       { // 17
+               []byte{
+                       0x01, 0x07, 0x91, 0x04, 0x91, 0x19, 0x04, 0x01,
+                       0x01, 0x07, 0x91, 0x04, 0x91, 0x19, 0x04, 0x01,
+                       0x01, 0x07, 0x91, 0x04, 0x91, 0x19, 0x04, 0x01,
+               },
+               nil,
+               []byte{0x2d, 0xfa, 0x9f, 0x45, 0x73, 0x59, 0x49, 0x65}},
+       { // 18
+               []byte{
+                       0x01, 0x07, 0x91, 0x04, 0x91, 0x19, 0x01, 0x01,
+                       0x01, 0x07, 0x91, 0x04, 0x91, 0x19, 0x01, 0x01,
+                       0x01, 0x07, 0x91, 0x04, 0x91, 0x19, 0x01, 0x01,
+               },
+               nil,
+               []byte{0xb4, 0x66, 0x04, 0x81, 0x6c, 0x0e, 0x07, 0x74}},
+       { // 19
+               []byte{
+                       0x01, 0x07, 0x94, 0x04, 0x91, 0x19, 0x04, 0x01,
+                       0x01, 0x07, 0x94, 0x04, 0x91, 0x19, 0x04, 0x01,
+                       0x01, 0x07, 0x94, 0x04, 0x91, 0x19, 0x04, 0x01,
+               },
+               nil,
+               []byte{0x6e, 0x7e, 0x62, 0x21, 0xa4, 0xf3, 0x4e, 0x87}},
+       { // 20
+               []byte{
+                       0x19, 0x07, 0x92, 0x10, 0x98, 0x1a, 0x01, 0x01,
+                       0x19, 0x07, 0x92, 0x10, 0x98, 0x1a, 0x01, 0x01,
+                       0x19, 0x07, 0x92, 0x10, 0x98, 0x1a, 0x01, 0x01,
+               },
+               nil,
+               []byte{0xaa, 0x85, 0xe7, 0x46, 0x43, 0x23, 0x31, 0x99}},
+       { // 21
+               []byte{
+                       0x10, 0x07, 0x91, 0x19, 0x98, 0x19, 0x08, 0x01,
+                       0x10, 0x07, 0x91, 0x19, 0x98, 0x19, 0x08, 0x01,
+                       0x10, 0x07, 0x91, 0x19, 0x98, 0x19, 0x08, 0x01,
+               },
+               nil,
+               []byte{0x2e, 0x5a, 0x19, 0xdb, 0x4d, 0x19, 0x62, 0xd6}},
+       { // 22
+               []byte{
+                       0x10, 0x07, 0x91, 0x19, 0x98, 0x1a, 0x08, 0x01,
+                       0x10, 0x07, 0x91, 0x19, 0x98, 0x1a, 0x08, 0x01,
+                       0x10, 0x07, 0x91, 0x19, 0x98, 0x1a, 0x08, 0x01,
+               },
+               nil,
+               []byte{0x23, 0xa8, 0x66, 0xa8, 0x09, 0xd3, 0x08, 0x94}},
+       { // 23
+               []byte{
+                       0x10, 0x07, 0x92, 0x10, 0x98, 0x19, 0x01, 0x01,
+                       0x10, 0x07, 0x92, 0x10, 0x98, 0x19, 0x01, 0x01,
+                       0x10, 0x07, 0x92, 0x10, 0x98, 0x19, 0x01, 0x01,
+               },
+               nil,
+               []byte{0xd8, 0x12, 0xd9, 0x61, 0xf0, 0x17, 0xd3, 0x20}},
+       { // 24
+               []byte{
+                       0x10, 0x07, 0x91, 0x15, 0x98, 0x19, 0x01, 0x0b,
+                       0x10, 0x07, 0x91, 0x15, 0x98, 0x19, 0x01, 0x0b,
+                       0x10, 0x07, 0x91, 0x15, 0x98, 0x19, 0x01, 0x0b,
+               },
+               nil,
+               []byte{0x05, 0x56, 0x05, 0x81, 0x6e, 0x58, 0x60, 0x8f}},
+       { // 25
+               []byte{
+                       0x10, 0x04, 0x80, 0x15, 0x98, 0x19, 0x01, 0x01,
+                       0x10, 0x04, 0x80, 0x15, 0x98, 0x19, 0x01, 0x01,
+                       0x10, 0x04, 0x80, 0x15, 0x98, 0x19, 0x01, 0x01,
+               },
+               nil,
+               []byte{0xab, 0xd8, 0x8e, 0x8b, 0x1b, 0x77, 0x16, 0xf1}},
+       { // 26
+               []byte{
+                       0x10, 0x04, 0x80, 0x15, 0x98, 0x19, 0x01, 0x02,
+                       0x10, 0x04, 0x80, 0x15, 0x98, 0x19, 0x01, 0x02,
+                       0x10, 0x04, 0x80, 0x15, 0x98, 0x19, 0x01, 0x02,
+               },
+               nil,
+               []byte{0x53, 0x7a, 0xc9, 0x5b, 0xe6, 0x9d, 0xa1, 0xe1}},
+       { // 27
+               []byte{
+                       0x10, 0x04, 0x80, 0x15, 0x98, 0x19, 0x01, 0x08,
+                       0x10, 0x04, 0x80, 0x15, 0x98, 0x19, 0x01, 0x08,
+                       0x10, 0x04, 0x80, 0x15, 0x98, 0x19, 0x01, 0x08,
+               },
+               nil,
+               []byte{0xae, 0xd0, 0xf6, 0xae, 0x3c, 0x25, 0xcd, 0xd8}},
+       { // 28
+               []byte{
+                       0x10, 0x02, 0x91, 0x15, 0x98, 0x10, 0x01, 0x04,
+                       0x10, 0x02, 0x91, 0x15, 0x98, 0x10, 0x01, 0x04,
+                       0x10, 0x02, 0x91, 0x15, 0x98, 0x10, 0x01, 0x04,
+               },
+               nil,
+               []byte{0xb3, 0xe3, 0x5a, 0x5e, 0xe5, 0x3e, 0x7b, 0x8d}},
+       { // 29
+               []byte{
+                       0x10, 0x02, 0x91, 0x15, 0x98, 0x19, 0x01, 0x04,
+                       0x10, 0x02, 0x91, 0x15, 0x98, 0x19, 0x01, 0x04,
+                       0x10, 0x02, 0x91, 0x15, 0x98, 0x19, 0x01, 0x04,
+               },
+               nil,
+               []byte{0x61, 0xc7, 0x9c, 0x71, 0x92, 0x1a, 0x2e, 0xf8}},
+       { // 30
+               []byte{
+                       0x10, 0x02, 0x91, 0x15, 0x98, 0x10, 0x02, 0x01,
+                       0x10, 0x02, 0x91, 0x15, 0x98, 0x10, 0x02, 0x01,
+                       0x10, 0x02, 0x91, 0x15, 0x98, 0x10, 0x02, 0x01,
+               },
+               nil,
+               []byte{0xe2, 0xf5, 0x72, 0x8f, 0x09, 0x95, 0x01, 0x3c}},
+       { // 31
+               []byte{
+                       0x10, 0x02, 0x91, 0x16, 0x98, 0x10, 0x01, 0x01,
+                       0x10, 0x02, 0x91, 0x16, 0x98, 0x10, 0x01, 0x01,
+                       0x10, 0x02, 0x91, 0x16, 0x98, 0x10, 0x01, 0x01,
+               },
+               nil,
+               []byte{0x1a, 0xea, 0xc3, 0x9a, 0x61, 0xf0, 0xa4, 0x64}},
+}
+
+// Table A.4 Values To Be Used for the Substitution Table Known Answer Test
+var tableA4Tests = []CryptTest{
+       { // 0
+               []byte{
+                       0x7c, 0xa1, 0x10, 0x45, 0x4a, 0x1a, 0x6e, 0x57,
+                       0x7c, 0xa1, 0x10, 0x45, 0x4a, 0x1a, 0x6e, 0x57,
+                       0x7c, 0xa1, 0x10, 0x45, 0x4a, 0x1a, 0x6e, 0x57},
+               []byte{0x01, 0xa1, 0xd6, 0xd0, 0x39, 0x77, 0x67, 0x42},
+               []byte{0x69, 0x0f, 0x5b, 0x0d, 0x9a, 0x26, 0x93, 0x9b}},
+       { // 1
+               []byte{
+                       0x01, 0x31, 0xd9, 0x61, 0x9d, 0xc1, 0x37, 0x6e,
+                       0x01, 0x31, 0xd9, 0x61, 0x9d, 0xc1, 0x37, 0x6e,
+                       0x01, 0x31, 0xd9, 0x61, 0x9d, 0xc1, 0x37, 0x6e},
+               []byte{0x5c, 0xd5, 0x4c, 0xa8, 0x3d, 0xef, 0x57, 0xda},
+               []byte{0x7a, 0x38, 0x9d, 0x10, 0x35, 0x4b, 0xd2, 0x71}},
+       { // 2
+               []byte{
+                       0x07, 0xa1, 0x13, 0x3e, 0x4a, 0x0b, 0x26, 0x86,
+                       0x07, 0xa1, 0x13, 0x3e, 0x4a, 0x0b, 0x26, 0x86,
+                       0x07, 0xa1, 0x13, 0x3e, 0x4a, 0x0b, 0x26, 0x86},
+               []byte{0x02, 0x48, 0xd4, 0x38, 0x06, 0xf6, 0x71, 0x72},
+               []byte{0x86, 0x8e, 0xbb, 0x51, 0xca, 0xb4, 0x59, 0x9a}},
+       { // 3
+               []byte{
+                       0x38, 0x49, 0x67, 0x4c, 0x26, 0x02, 0x31, 0x9e,
+                       0x38, 0x49, 0x67, 0x4c, 0x26, 0x02, 0x31, 0x9e,
+                       0x38, 0x49, 0x67, 0x4c, 0x26, 0x02, 0x31, 0x9e},
+               []byte{0x51, 0x45, 0x4b, 0x58, 0x2d, 0xdf, 0x44, 0x0a},
+               []byte{0x71, 0x78, 0x87, 0x6e, 0x01, 0xf1, 0x9b, 0x2a}},
+       { // 4
+               []byte{
+                       0x04, 0xb9, 0x15, 0xba, 0x43, 0xfe, 0xb5, 0xb6,
+                       0x04, 0xb9, 0x15, 0xba, 0x43, 0xfe, 0xb5, 0xb6,
+                       0x04, 0xb9, 0x15, 0xba, 0x43, 0xfe, 0xb5, 0xb6},
+               []byte{0x42, 0xfd, 0x44, 0x30, 0x59, 0x57, 0x7f, 0xa2},
+               []byte{0xaf, 0x37, 0xfb, 0x42, 0x1f, 0x8c, 0x40, 0x95}},
+       { // 5
+               []byte{
+                       0x01, 0x13, 0xb9, 0x70, 0xfd, 0x34, 0xf2, 0xce,
+                       0x01, 0x13, 0xb9, 0x70, 0xfd, 0x34, 0xf2, 0xce,
+                       0x01, 0x13, 0xb9, 0x70, 0xfd, 0x34, 0xf2, 0xce},
+               []byte{0x05, 0x9b, 0x5e, 0x08, 0x51, 0xcf, 0x14, 0x3a},
+               []byte{0x86, 0xa5, 0x60, 0xf1, 0x0e, 0xc6, 0xd8, 0x5b}},
+       { // 6
+               []byte{
+                       0x01, 0x70, 0xf1, 0x75, 0x46, 0x8f, 0xb5, 0xe6,
+                       0x01, 0x70, 0xf1, 0x75, 0x46, 0x8f, 0xb5, 0xe6,
+                       0x01, 0x70, 0xf1, 0x75, 0x46, 0x8f, 0xb5, 0xe6},
+               []byte{0x07, 0x56, 0xd8, 0xe0, 0x77, 0x47, 0x61, 0xd2},
+               []byte{0x0c, 0xd3, 0xda, 0x02, 0x00, 0x21, 0xdc, 0x09}},
+       { // 7
+               []byte{
+                       0x43, 0x29, 0x7f, 0xad, 0x38, 0xe3, 0x73, 0xfe,
+                       0x43, 0x29, 0x7f, 0xad, 0x38, 0xe3, 0x73, 0xfe,
+                       0x43, 0x29, 0x7f, 0xad, 0x38, 0xe3, 0x73, 0xfe},
+               []byte{0x76, 0x25, 0x14, 0xb8, 0x29, 0xbf, 0x48, 0x6a},
+               []byte{0xea, 0x67, 0x6b, 0x2c, 0xb7, 0xdb, 0x2b, 0x7a}},
+       { // 8
+               []byte{
+                       0x07, 0xa7, 0x13, 0x70, 0x45, 0xda, 0x2a, 0x16,
+                       0x07, 0xa7, 0x13, 0x70, 0x45, 0xda, 0x2a, 0x16,
+                       0x07, 0xa7, 0x13, 0x70, 0x45, 0xda, 0x2a, 0x16},
+               []byte{0x3b, 0xdd, 0x11, 0x90, 0x49, 0x37, 0x28, 0x02},
+               []byte{0xdf, 0xd6, 0x4a, 0x81, 0x5c, 0xaf, 0x1a, 0x0f}},
+       { // 9
+               []byte{
+                       0x04, 0x68, 0x91, 0x04, 0xc2, 0xfd, 0x3b, 0x2f,
+                       0x04, 0x68, 0x91, 0x04, 0xc2, 0xfd, 0x3b, 0x2f,
+                       0x04, 0x68, 0x91, 0x04, 0xc2, 0xfd, 0x3b, 0x2f},
+               []byte{0x26, 0x95, 0x5f, 0x68, 0x35, 0xaf, 0x60, 0x9a},
+               []byte{0x5c, 0x51, 0x3c, 0x9c, 0x48, 0x86, 0xc0, 0x88}},
+       { // 10
+               []byte{
+                       0x37, 0xd0, 0x6b, 0xb5, 0x16, 0xcb, 0x75, 0x46,
+                       0x37, 0xd0, 0x6b, 0xb5, 0x16, 0xcb, 0x75, 0x46,
+                       0x37, 0xd0, 0x6b, 0xb5, 0x16, 0xcb, 0x75, 0x46},
+               []byte{0x16, 0x4d, 0x5e, 0x40, 0x4f, 0x27, 0x52, 0x32},
+               []byte{0x0a, 0x2a, 0xee, 0xae, 0x3f, 0xf4, 0xab, 0x77}},
+       { // 11
+               []byte{
+                       0x1f, 0x08, 0x26, 0x0d, 0x1a, 0xc2, 0x46, 0x5e,
+                       0x1f, 0x08, 0x26, 0x0d, 0x1a, 0xc2, 0x46, 0x5e,
+                       0x1f, 0x08, 0x26, 0x0d, 0x1a, 0xc2, 0x46, 0x5e},
+               []byte{0x6b, 0x05, 0x6e, 0x18, 0x75, 0x9f, 0x5c, 0xca},
+               []byte{0xef, 0x1b, 0xf0, 0x3e, 0x5d, 0xfa, 0x57, 0x5a}},
+       { // 12
+               []byte{
+                       0x58, 0x40, 0x23, 0x64, 0x1a, 0xba, 0x61, 0x76,
+                       0x58, 0x40, 0x23, 0x64, 0x1a, 0xba, 0x61, 0x76,
+                       0x58, 0x40, 0x23, 0x64, 0x1a, 0xba, 0x61, 0x76},
+               []byte{0x00, 0x4b, 0xd6, 0xef, 0x09, 0x17, 0x60, 0x62},
+               []byte{0x88, 0xbf, 0x0d, 0xb6, 0xd7, 0x0d, 0xee, 0x56}},
+       { // 13
+               []byte{
+                       0x02, 0x58, 0x16, 0x16, 0x46, 0x29, 0xb0, 0x07,
+                       0x02, 0x58, 0x16, 0x16, 0x46, 0x29, 0xb0, 0x07,
+                       0x02, 0x58, 0x16, 0x16, 0x46, 0x29, 0xb0, 0x07},
+               []byte{0x48, 0x0d, 0x39, 0x00, 0x6e, 0xe7, 0x62, 0xf2},
+               []byte{0xa1, 0xf9, 0x91, 0x55, 0x41, 0x02, 0x0b, 0x56}},
+       { // 14
+               []byte{
+                       0x49, 0x79, 0x3e, 0xbc, 0x79, 0xb3, 0x25, 0x8f,
+                       0x49, 0x79, 0x3e, 0xbc, 0x79, 0xb3, 0x25, 0x8f,
+                       0x49, 0x79, 0x3e, 0xbc, 0x79, 0xb3, 0x25, 0x8f},
+               []byte{0x43, 0x75, 0x40, 0xc8, 0x69, 0x8f, 0x3c, 0xfa},
+               []byte{0x6f, 0xbf, 0x1c, 0xaf, 0xcf, 0xfd, 0x05, 0x56}},
+       { // 15
+               []byte{
+                       0x4f, 0xb0, 0x5e, 0x15, 0x15, 0xab, 0x73, 0xa7,
+                       0x4f, 0xb0, 0x5e, 0x15, 0x15, 0xab, 0x73, 0xa7,
+                       0x4f, 0xb0, 0x5e, 0x15, 0x15, 0xab, 0x73, 0xa7},
+               []byte{0x07, 0x2d, 0x43, 0xa0, 0x77, 0x07, 0x52, 0x92},
+               []byte{0x2f, 0x22, 0xe4, 0x9b, 0xab, 0x7c, 0xa1, 0xac}},
+       { // 16
+               []byte{
+                       0x49, 0xe9, 0x5d, 0x6d, 0x4c, 0xa2, 0x29, 0xbf,
+                       0x49, 0xe9, 0x5d, 0x6d, 0x4c, 0xa2, 0x29, 0xbf,
+                       0x49, 0xe9, 0x5d, 0x6d, 0x4c, 0xa2, 0x29, 0xbf},
+               []byte{0x02, 0xfe, 0x55, 0x77, 0x81, 0x17, 0xf1, 0x2a},
+               []byte{0x5a, 0x6b, 0x61, 0x2c, 0xc2, 0x6c, 0xce, 0x4a}},
+       { // 17
+               []byte{
+                       0x01, 0x83, 0x10, 0xdc, 0x40, 0x9b, 0x26, 0xd6,
+                       0x01, 0x83, 0x10, 0xdc, 0x40, 0x9b, 0x26, 0xd6,
+                       0x01, 0x83, 0x10, 0xdc, 0x40, 0x9b, 0x26, 0xd6},
+               []byte{0x1d, 0x9d, 0x5c, 0x50, 0x18, 0xf7, 0x28, 0xc2},
+               []byte{0x5f, 0x4c, 0x03, 0x8e, 0xd1, 0x2b, 0x2e, 0x41}},
+       { // 18
+               []byte{
+                       0x1c, 0x58, 0x7f, 0x1c, 0x13, 0x92, 0x4f, 0xef,
+                       0x1c, 0x58, 0x7f, 0x1c, 0x13, 0x92, 0x4f, 0xef,
+                       0x1c, 0x58, 0x7f, 0x1c, 0x13, 0x92, 0x4f, 0xef},
+               []byte{0x30, 0x55, 0x32, 0x28, 0x6d, 0x6f, 0x29, 0x5a},
+               []byte{0x63, 0xfa, 0xc0, 0xd0, 0x34, 0xd9, 0xf7, 0x93}},
+}
+
+// Use the known weak keys to test DES implementation
+func TestWeakKeys(t *testing.T) {
+       for i, tt := range weakKeyTests {
+               var encrypt = func(in []byte) (out []byte) {
+                       c := &DESCipher{tt.key, [16]uint64{}}
+                       ksGenerateSubkeys(c)
+                       out = make([]byte, len(in))
+                       encryptBlock(c.subkeys, out, in)
+                       return
+               }
+
+               // Encrypting twice with a DES weak
+               // key should reproduce the original input
+               result := encrypt(tt.in)
+               result = encrypt(result)
+
+               for j, v := range result {
+                       if v != tt.in[j] {
+                               t.Errorf("weak key test %d: result[%d] = %#x, want %#x", i, j, v, tt.in[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Use the known semi-weak key pairs to test DES implementation
+func TestSemiWeakKeyPairs(t *testing.T) {
+       for i, tt := range semiWeakKeyTests {
+               var encrypt = func(key, in []byte) (out []byte) {
+                       c := &DESCipher{key, [16]uint64{}}
+                       ksGenerateSubkeys(c)
+                       out = make([]byte, len(in))
+                       encryptBlock(c.subkeys, out, in)
+                       return
+               }
+
+               // Encrypting with one member of the semi-weak pair
+               // and then encrypting the result with the other member
+               // should reproduce the original input.
+               result := encrypt(tt.key, tt.in)
+               result = encrypt(tt.out, result)
+
+               for j, v := range result {
+                       if v != tt.in[j] {
+                               t.Errorf("semi weak key test %d: result[%d] = %#x, want %#x", i, j, v, tt.in[j])
+                               break
+                       }
+               }
+       }
+}
+
+func TestDESEncryptBlock(t *testing.T) {
+       for i, tt := range encryptDESTests {
+               c := &DESCipher{tt.key, [16]uint64{}}
+               ksGenerateSubkeys(c)
+               out := make([]byte, len(tt.in))
+               encryptBlock(c.subkeys, out, tt.in)
+
+               for j, v := range out {
+                       if v != tt.out[j] {
+                               t.Errorf("encryptBlock %d: out[%d] = %#x, want %#x", i, j, v, tt.out[j])
+                               break
+                       }
+               }
+       }
+}
+
+func TestDESDecryptBlock(t *testing.T) {
+       for i, tt := range encryptDESTests {
+               c := &DESCipher{tt.key, [16]uint64{}}
+               ksGenerateSubkeys(c)
+               plain := make([]byte, len(tt.in))
+               decryptBlock(c.subkeys, plain, tt.out)
+
+               for j, v := range plain {
+                       if v != tt.in[j] {
+                               t.Errorf("decryptBlock %d: plain[%d] = %#x, want %#x", i, j, v, tt.in[j])
+                               break
+                       }
+               }
+       }
+}
+
+func TestEncryptTripleDES(t *testing.T) {
+       for i, tt := range encryptTripleDESTests {
+               cipher1, _ := NewDESCipher(tt.key[0:8])
+               cipher2, _ := NewDESCipher(tt.key[8:16])
+               cipher3, _ := NewDESCipher(tt.key[16:])
+               c := &TripleDESCipher{tt.key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tt.in))
+               c.Encrypt(out, tt.in)
+
+               for j, v := range out {
+                       if v != tt.out[j] {
+                               t.Errorf("encrypt %d: out[%d] = %#x, want %#x", i, j, v, tt.out[j])
+                               break
+                       }
+               }
+       }
+}
+
+func TestDecryptTripleDES(t *testing.T) {
+       for i, tt := range encryptTripleDESTests {
+               cipher1, _ := NewDESCipher(tt.key[0:8])
+               cipher2, _ := NewDESCipher(tt.key[8:16])
+               cipher3, _ := NewDESCipher(tt.key[16:])
+               c := &TripleDESCipher{tt.key, cipher1, cipher2, cipher3}
+
+               plain := make([]byte, len(tt.in))
+               c.Decrypt(plain, tt.out)
+
+               for j, v := range plain {
+                       if v != tt.in[j] {
+                               t.Errorf("decrypt %d: plain[%d] = %#x, want %#x", i, j, v, tt.in[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+func TestVariablePlaintextKnownAnswer(t *testing.T) {
+       for i, tt := range tableA1Tests {
+               cipher1, _ := NewDESCipher(tableA1Key[0:8])
+               cipher2, _ := NewDESCipher(tableA1Key[8:16])
+               cipher3, _ := NewDESCipher(tableA1Key[16:])
+               c := &TripleDESCipher{tableA1Key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tt.in))
+               c.Encrypt(out, tt.in)
+
+               for j, v := range out {
+                       if v != tt.out[j] {
+                               t.Errorf("variable plaintext known answer test %d: out[%d] = %#x, want %#x",
+                                       i, j, v, tt.out[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+func TestVariableCiphertextKnownAnswer(t *testing.T) {
+       for i, tt := range tableA1Tests {
+               cipher1, _ := NewDESCipher(tableA1Key[0:8])
+               cipher2, _ := NewDESCipher(tableA1Key[8:16])
+               cipher3, _ := NewDESCipher(tableA1Key[16:])
+               c := &TripleDESCipher{tableA1Key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tt.out))
+               c.Decrypt(out, tt.out)
+
+               for j, v := range out {
+                       if v != tt.in[j] {
+                               t.Errorf("variable ciphertext known answer test %d: in[%d] = %#x, want %#x",
+                                       i, j, v, tt.in[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+// Encrypting the Table A.1 ciphertext with the
+// 0x01... key produces the original plaintext
+func TestInversePermutationKnownAnswer(t *testing.T) {
+       for i, tt := range tableA1Tests {
+               cipher1, _ := NewDESCipher(tableA1Key[0:8])
+               cipher2, _ := NewDESCipher(tableA1Key[8:16])
+               cipher3, _ := NewDESCipher(tableA1Key[16:])
+               c := &TripleDESCipher{tableA1Key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tt.in))
+               c.Encrypt(out, tt.out)
+
+               for j, v := range out {
+                       if v != tt.in[j] {
+                               t.Errorf("inverse permutation known answer test %d: in[%d] = %#x, want %#x",
+                                       i, j, v, tt.in[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+// Decrypting the Table A.1 plaintext with the
+// 0x01... key produces the corresponding ciphertext
+func TestInitialPermutationKnownAnswer(t *testing.T) {
+       for i, tt := range tableA1Tests {
+               cipher1, _ := NewDESCipher(tableA1Key[0:8])
+               cipher2, _ := NewDESCipher(tableA1Key[8:16])
+               cipher3, _ := NewDESCipher(tableA1Key[16:])
+               c := &TripleDESCipher{tableA1Key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tt.in))
+               c.Decrypt(out, tt.in)
+
+               for j, v := range out {
+                       if v != tt.out[j] {
+                               t.Errorf("initial permutation known answer test %d: out[%d] = %#x, want %#x",
+                                       i, j, v, tt.out[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+func TestVariableKeyKnownAnswerEncrypt(t *testing.T) {
+       for i, tt := range tableA2Tests {
+               cipher1, _ := NewDESCipher(tt.key[0:8])
+               cipher2, _ := NewDESCipher(tt.key[8:16])
+               cipher3, _ := NewDESCipher(tt.key[16:])
+               c := &TripleDESCipher{tt.key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tableA2Plaintext))
+               c.Encrypt(out, tableA2Plaintext)
+
+               for j, v := range out {
+                       if v != tt.out[j] {
+                               t.Errorf("variable key known answer encrypt test %d: out[%d] = %#x, want %#x",
+                                       i, j, v, tt.out[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+func TestVariableKeyKnownAnswerDecrypt(t *testing.T) {
+       for i, tt := range tableA2Tests {
+               cipher1, _ := NewDESCipher(tt.key[0:8])
+               cipher2, _ := NewDESCipher(tt.key[8:16])
+               cipher3, _ := NewDESCipher(tt.key[16:])
+               c := &TripleDESCipher{tt.key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tt.out))
+               c.Decrypt(out, tt.out)
+
+               for j, v := range out {
+                       if v != tableA2Plaintext[j] {
+                               t.Errorf("variable key known answer decrypt test %d: out[%d] = %#x, want %#x",
+                                       i, j, v, tableA2Plaintext[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+func TestPermutationOperationKnownAnswerEncrypt(t *testing.T) {
+       for i, tt := range tableA3Tests {
+               cipher1, _ := NewDESCipher(tt.key[0:8])
+               cipher2, _ := NewDESCipher(tt.key[8:16])
+               cipher3, _ := NewDESCipher(tt.key[16:])
+               c := &TripleDESCipher{tt.key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tableA3Plaintext))
+               c.Encrypt(out, tableA3Plaintext)
+
+               for j, v := range out {
+                       if v != tt.out[j] {
+                               t.Errorf("permutation operation known answer encrypt test %d: out[%d] = %#x, want %#x",
+                                       i, j, v, tt.out[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+func TestPermutationOperationKnownAnswerDecrypt(t *testing.T) {
+       for i, tt := range tableA3Tests {
+               cipher1, _ := NewDESCipher(tt.key[0:8])
+               cipher2, _ := NewDESCipher(tt.key[8:16])
+               cipher3, _ := NewDESCipher(tt.key[16:])
+               c := &TripleDESCipher{tt.key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tt.out))
+               c.Decrypt(out, tt.out)
+
+               for j, v := range out {
+                       if v != tableA3Plaintext[j] {
+                               t.Errorf("permutation operation known answer decrypt test %d: out[%d] = %#x, want %#x",
+                                       i, j, v, tableA3Plaintext[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+func TestSubstitutionTableKnownAnswerEncrypt(t *testing.T) {
+       for i, tt := range tableA4Tests {
+               cipher1, _ := NewDESCipher(tt.key[0:8])
+               cipher2, _ := NewDESCipher(tt.key[8:16])
+               cipher3, _ := NewDESCipher(tt.key[16:])
+               c := &TripleDESCipher{tt.key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tt.in))
+               c.Encrypt(out, tt.in)
+
+               for j, v := range out {
+                       if v != tt.out[j] {
+                               t.Errorf("substitution table known answer encrypt test %d: out[%d] = %#x, want %#x",
+                                       i, j, v, tt.out[j])
+                               break
+                       }
+               }
+       }
+}
+
+// Defined in Pub 800-20
+func TestSubstitutionTableKnownAnswerDecrypt(t *testing.T) {
+       for i, tt := range tableA4Tests {
+               cipher1, _ := NewDESCipher(tt.key[0:8])
+               cipher2, _ := NewDESCipher(tt.key[8:16])
+               cipher3, _ := NewDESCipher(tt.key[16:])
+               c := &TripleDESCipher{tt.key, cipher1, cipher2, cipher3}
+
+               out := make([]byte, len(tt.out))
+               c.Decrypt(out, tt.out)
+
+               for j, v := range out {
+                       if v != tt.in[j] {
+                               t.Errorf("substitution table known answer decrypt test %d: out[%d] = %#x, want %#x",
+                                       i, j, v, tt.in[j])
+                               break
+                       }
+               }
+       }
+}