Restrictions on its length (recommended: 16 bytes).įor MODE_CCM, its length must be in the range. With this key (except possibly for MODE_SIV, see below).įor MODE_EAX, MODE_GCM and MODE_SIV there are no (Only applicable for MODE_CCM, MODE_EAX, MODE_GCM,Ī value that must never be reused for any other encryption done If not provided, a random byte string is generated (you must then The initialization vector to use for encryption or decryption.įor MODE_CBC, MODE_CFB, and MODE_OFB it must be 16 bytes long.Īnd 18 bytes for decryption (in the latter case, it isĪctually the encrypted IV which was prefixed to the ciphertext). (Only applicable for MODE_CBC, MODE_CFB, MODE_OFB,
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