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| author | Stephan Mueller <smueller@chronox.de> | 2016-10-21 04:59:24 +0200 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2016-12-14 00:38:06 +0100 |
| commit | 3f692d5f97cb834a42bcfb3cc10f5e390a9d7867 (patch) | |
| tree | a7663ecfa0067ea394140eb86bd5490fc4c81451 /crypto | |
| parent | crypto: doc - remove crypto_alloc_ablkcipher (diff) | |
| download | linux-3f692d5f97cb834a42bcfb3cc10f5e390a9d7867.tar.xz linux-3f692d5f97cb834a42bcfb3cc10f5e390a9d7867.zip | |
crypto: doc - clarify AEAD memory structure
The previous description have been misleading and partially incorrect.
Reported-by: Harsh Jain <harshjain.prof@gmail.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/algif_aead.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c index 80a0f1a78551..a0d8377729a4 100644 --- a/crypto/algif_aead.c +++ b/crypto/algif_aead.c @@ -551,18 +551,8 @@ static int aead_recvmsg_sync(struct socket *sock, struct msghdr *msg, int flags) lock_sock(sk); /* - * AEAD memory structure: For encryption, the tag is appended to the - * ciphertext which implies that the memory allocated for the ciphertext - * must be increased by the tag length. For decryption, the tag - * is expected to be concatenated to the ciphertext. The plaintext - * therefore has a memory size of the ciphertext minus the tag length. - * - * The memory structure for cipher operation has the following - * structure: - * AEAD encryption input: assoc data || plaintext - * AEAD encryption output: cipherntext || auth tag - * AEAD decryption input: assoc data || ciphertext || auth tag - * AEAD decryption output: plaintext + * Please see documentation of aead_request_set_crypt for the + * description of the AEAD memory structure expected from the caller. */ if (ctx->more) { |