diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-18 19:53:16 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-18 19:53:16 +0200 |
| commit | 9b610fda0df5d0f0b0c64242e37441ad1b384aac (patch) | |
| tree | 0ea14b15f2e6546f37fe18d8ac3dc83077ec0e55 /crypto/hmac.c | |
| parent | b8f8c3cf0a4ac0632ec3f0e15e9dc0c29de917af (diff) | |
| parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) | |
Merge branch 'linus' into timers/nohz
Diffstat (limited to 'crypto/hmac.c')
| -rw-r--r-- | crypto/hmac.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/crypto/hmac.c b/crypto/hmac.c index 14c6351e639..7ff2d6a8c7d 100644 --- a/crypto/hmac.c +++ b/crypto/hmac.c @@ -226,6 +226,7 @@ static struct crypto_instance *hmac_alloc(struct rtattr **tb) struct crypto_instance *inst; struct crypto_alg *alg; int err; + int ds; err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_HASH); if (err) @@ -236,6 +237,13 @@ static struct crypto_instance *hmac_alloc(struct rtattr **tb) if (IS_ERR(alg)) return ERR_CAST(alg); + inst = ERR_PTR(-EINVAL); + ds = (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == + CRYPTO_ALG_TYPE_HASH ? alg->cra_hash.digestsize : + alg->cra_digest.dia_digestsize; + if (ds > alg->cra_blocksize) + goto out_put_alg; + inst = crypto_alloc_instance("hmac", alg); if (IS_ERR(inst)) goto out_put_alg; @@ -246,14 +254,10 @@ static struct crypto_instance *hmac_alloc(struct rtattr **tb) inst->alg.cra_alignmask = alg->cra_alignmask; inst->alg.cra_type = &crypto_hash_type; - inst->alg.cra_hash.digestsize = - (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == - CRYPTO_ALG_TYPE_HASH ? alg->cra_hash.digestsize : - alg->cra_digest.dia_digestsize; + inst->alg.cra_hash.digestsize = ds; inst->alg.cra_ctxsize = sizeof(struct hmac_ctx) + - ALIGN(inst->alg.cra_blocksize * 2 + - inst->alg.cra_hash.digestsize, + ALIGN(inst->alg.cra_blocksize * 2 + ds, sizeof(void *)); inst->alg.cra_init = hmac_init_tfm; |