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authorStephan Mueller <smueller@chronox.de>2014-12-03 19:55:42 (GMT)
committerHerbert Xu <herbert@gondor.apana.org.au>2014-12-05 15:56:55 (GMT)
commitaf8e80731a94ff9de9508b01d9e5d931d538dc6b (patch)
treeab112b5744eeacddf7f749fe640601e55ecacf21 /crypto
parentbc84b94a715f3505f5f5981af0ec0362aa3fe38b (diff)
crypto: af_alg - add user space interface for AEAD
AEAD requires the caller to specify the following information separate from the data stream. This information allows the AEAD interface handler to identify the AAD, ciphertext/plaintext and the authentication tag: * Associated authentication data of arbitrary length and length * Length of authentication tag for encryption Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/af_alg.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 6a3ad80..68ff113 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -421,6 +421,12 @@ int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con)
con->op = *(u32 *)CMSG_DATA(cmsg);
break;
+ case ALG_SET_AEAD_ASSOCLEN:
+ if (cmsg->cmsg_len < CMSG_LEN(sizeof(u32)))
+ return -EINVAL;
+ con->aead_assoclen = *(u32 *)CMSG_DATA(cmsg);
+ break;
+
default:
return -EINVAL;
}

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