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| author | Stephan Mueller <smueller@chronox.de> | 2014-12-07 23:21:42 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-12-22 23:02:37 +1100 |
| commit | 4c787567186b1e2df82b6f920d692ce67421ec75 (patch) | |
| tree | 170097737b73df4a54c1b9c655af45eac402e49f /crypto | |
| parent | 2718d3daac8bfa60bb7a9746c587499802c7c6a6 (diff) | |
| download | linux-crypto-4c787567186b1e2df82b6f920d692ce67421ec75.tar.gz linux-crypto-4c787567186b1e2df82b6f920d692ce67421ec75.zip | |
crypto: af_alg - add setsockopt for auth tag size
Use setsockopt on the tfm FD to provide the authentication tag size for
an AEAD cipher. This is achieved by adding a callback function which is
intended to be used by the AEAD AF_ALG implementation.
The optlen argument of the setsockopt specifies the authentication tag
size to be used with the AEAD tfm.
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.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c index 8ffc174a..a8ff3c44 100644 --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -215,6 +215,13 @@ static int alg_setsockopt(struct socket *sock, int level, int optname, goto unlock; err = alg_setkey(sk, optval, optlen); + break; + case ALG_SET_AEAD_AUTHSIZE: + if (sock->state == SS_CONNECTED) + goto unlock; + if (!type->setauthsize) + goto unlock; + err = type->setauthsize(ask->private, optlen); } unlock: |