diff options
| author | Eric Biggers <ebiggers@google.com> | 2019-12-31 06:19:38 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-01-09 06:30:53 +0300 |
| commit | af5034e8e4a5838fc77e476c1a91822e449d5869 (patch) | |
| tree | f561a8db9f88931072210330128fed231e3b8b0b /crypto/chacha20poly1305.c | |
| parent | c4c4db0d59774f6ab726edd012711490437345c2 (diff) | |
| download | linux-af5034e8e4a5838fc77e476c1a91822e449d5869.tar.xz | |
crypto: remove propagation of CRYPTO_TFM_RES_* flags
The CRYPTO_TFM_RES_* flags were apparently meant as a way to make the
->setkey() functions provide more information about errors. But these
flags weren't actually being used or tested, and in many cases they
weren't being set correctly anyway. So they've now been removed.
Also, if someone ever actually needs to start better distinguishing
->setkey() errors (which is somewhat unlikely, as this has been unneeded
for a long time), we'd be much better off just defining different return
values, like -EINVAL if the key is invalid for the algorithm vs.
-EKEYREJECTED if the key was rejected by a policy like "no weak keys".
That would be much simpler, less error-prone, and easier to test.
So just remove CRYPTO_TFM_RES_MASK and all the unneeded logic that
propagates these flags around.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/chacha20poly1305.c')
| -rw-r--r-- | crypto/chacha20poly1305.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/crypto/chacha20poly1305.c b/crypto/chacha20poly1305.c index 74e824e537e6..88cbdaba43b8 100644 --- a/crypto/chacha20poly1305.c +++ b/crypto/chacha20poly1305.c @@ -477,7 +477,6 @@ static int chachapoly_setkey(struct crypto_aead *aead, const u8 *key, unsigned int keylen) { struct chachapoly_ctx *ctx = crypto_aead_ctx(aead); - int err; if (keylen != ctx->saltlen + CHACHA_KEY_SIZE) return -EINVAL; @@ -488,11 +487,7 @@ static int chachapoly_setkey(struct crypto_aead *aead, const u8 *key, crypto_skcipher_clear_flags(ctx->chacha, CRYPTO_TFM_REQ_MASK); crypto_skcipher_set_flags(ctx->chacha, crypto_aead_get_flags(aead) & CRYPTO_TFM_REQ_MASK); - - err = crypto_skcipher_setkey(ctx->chacha, key, keylen); - crypto_aead_set_flags(aead, crypto_skcipher_get_flags(ctx->chacha) & - CRYPTO_TFM_RES_MASK); - return err; + return crypto_skcipher_setkey(ctx->chacha, key, keylen); } static int chachapoly_setauthsize(struct crypto_aead *tfm, |