crypto/internal/fips140test: collect 300M entropy samples for ESV

Change-Id: I6a6a69649df8f576df62e22c16db7813cde75224
Reviewed-on: https://go-review.googlesource.com/c/go/+/715401
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Daniel McCarney <daniel@binaryparadox.net>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

diff --git a/src/crypto/internal/fips140test/entropy_test.go b/src/crypto/internal/fips140test/entropy_test.go
index cdaa4b7d8042eb97e94d2ba7788f84a9f29ef2e7..82d921ffb7301aadef0c33d9f08e2ddf98d040a1 100644 (file)
--- a/src/crypto/internal/fips140test/entropy_test.go
+++ b/src/crypto/internal/fips140test/entropy_test.go
@@ -34,12 +34,17 @@ func TestEntropySamples(t *testing.T) {
        cryptotest.MustSupportFIPS140(t)
        now := time.Now().UTC()
 
-       var seqSamples [1_000_000]uint8
-       samplesOrTryAgain(t, seqSamples[:])
+       seqSampleCount := 1_000_000
+       if *flagEntropySamples != "" {
+               // The lab requested 300 million samples for a new heuristic procedure.
+               seqSampleCount = 300_000_000
+       }
+       seqSamples := make([]uint8, seqSampleCount)
+       samplesOrTryAgain(t, seqSamples)
        seqSamplesName := fmt.Sprintf("entropy_samples_sequential_%s_%s_%s_%s_%s.bin", entropy.Version(),
                runtime.GOOS, runtime.GOARCH, *flagEntropySamples, now.Format("20060102T150405Z"))
        if *flagEntropySamples != "" {
-               if err := os.WriteFile(seqSamplesName, seqSamples[:], 0644); err != nil {
+               if err := os.WriteFile(seqSamplesName, seqSamples, 0644); err != nil {
                        t.Fatalf("failed to write samples to %q: %v", seqSamplesName, err)
                }
                t.Logf("wrote %s", seqSamplesName)