algorithm must be used. It should have "kem" key usage set.
Recipient's map "/kem/*/encap" field is a concatenation of 1047
-bytes of Streamlined NTRU Prime 4591^761's ciphertext, containing
-ephemeral key, with 32 bytes of ephemeral X25519 public key.
+bytes Streamlined NTRU Prime 4591^761's ciphertext, containing
+ephemeral key, with 32 bytes ephemeral X25519 public key.
Recipient performs X25519 and SNTRUP computations to derive/decapsulate
two 32-byte shared keys. Then it combines them to get the KEK decryption