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crypto: aead - Fix corner case in crypto_lookup_aead

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When the user explicitly states that they don't care whether the
algorithm has been tested (type = CRYPTO_ALG_TESTED and mask = 0),
there is a corner case where we may erroneously return ENOENT.

This patch fixes it by correcting the logic in the test.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2015-04-23 16:37:46 +08:00
parent 2673953520
commit 80f7b3552c
1 changed files with 1 additions and 1 deletions
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2
crypto/aead.c
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@ -489,7 +489,7 @@ struct crypto_alg *crypto_lookup_aead(const char *name, u32 type, u32 mask)
return alg;
if (alg->cra_type == &crypto_aead_type) {
if ((alg->cra_flags ^ type ^ ~mask) & CRYPTO_ALG_TESTED) {
if (~alg->cra_flags & (type ^ ~mask) & CRYPTO_ALG_TESTED) {
crypto_mod_put(alg);
alg = ERR_PTR(-ENOENT);
}