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| author | Takashi Iwai <tiwai@suse.de> | 2012-01-31 15:13:14 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-01-31 15:13:14 +0100 |
| commit | ea51e5040e24eefe44d70bc654a237ca1f0225b0 (patch) | |
| tree | df2e5922dcdfafae62a10d8cd97f98121064fc23 /crypto/ansi_cprng.c | |
| parent | 3422a47041b8cb8f14ac1e3926bcf711121df6dc (diff) | |
| parent | 8dbd52daee38adaae4d5a674bcca837e694a4f4c (diff) | |
Merge branch 'fix/asoc' into for-linus
Diffstat (limited to 'crypto/ansi_cprng.c')
| -rw-r--r-- | crypto/ansi_cprng.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/crypto/ansi_cprng.c b/crypto/ansi_cprng.c index ffa0245e2abc..6ddd99e6114b 100644 --- a/crypto/ansi_cprng.c +++ b/crypto/ansi_cprng.c @@ -414,10 +414,18 @@ static int fips_cprng_get_random(struct crypto_rng *tfm, u8 *rdata, static int fips_cprng_reset(struct crypto_rng *tfm, u8 *seed, unsigned int slen) { u8 rdata[DEFAULT_BLK_SZ]; + u8 *key = seed + DEFAULT_BLK_SZ; int rc; struct prng_context *prng = crypto_rng_ctx(tfm); + if (slen < DEFAULT_PRNG_KSZ + DEFAULT_BLK_SZ) + return -EINVAL; + + /* fips strictly requires seed != key */ + if (!memcmp(seed, key, DEFAULT_PRNG_KSZ)) + return -EINVAL; + rc = cprng_reset(tfm, seed, slen); if (!rc) |