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| author | Stephan Mueller <smueller@chronox.de> | 2015-03-06 08:26:31 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-03-09 11:06:18 +0100 |
| commit | cde001e4c3c3625c60b68a83eb1f1c2572dee07a (patch) | |
| tree | 6b0a069f9fdfa36c3741164564ea163f9cb69820 /include/crypto | |
| parent | hwrng: caam - fix rng_unmap_ctx's DMA_UNMAP size problem (diff) | |
| download | linux-cde001e4c3c3625c60b68a83eb1f1c2572dee07a.tar.xz linux-cde001e4c3c3625c60b68a83eb1f1c2572dee07a.zip | |
crypto: rng - RNGs must return 0 in success case
Change the RNGs to always return 0 in success case.
This patch ensures that seqiv.c works with RNGs other than krng. seqiv
expects that any return code other than 0 is an error. Without the
patch, rfc4106(gcm(aes)) will not work when using a DRBG or an ANSI
X9.31 RNG.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/rng.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/include/crypto/rng.h b/include/crypto/rng.h index a16fb10142bf..6e28ea5be9f1 100644 --- a/include/crypto/rng.h +++ b/include/crypto/rng.h @@ -103,8 +103,7 @@ static inline void crypto_free_rng(struct crypto_rng *tfm) * This function fills the caller-allocated buffer with random numbers using the * random number generator referenced by the cipher handle. * - * Return: > 0 function was successful and returns the number of generated - * bytes; < 0 if an error occurred + * Return: 0 function was successful; < 0 if an error occurred */ static inline int crypto_rng_get_bytes(struct crypto_rng *tfm, u8 *rdata, unsigned int dlen) |