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| author | Stephan Mueller <smueller@chronox.de> | 2015-04-17 14:54:08 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-04-21 09:14:38 +0800 |
| commit | a73b9524f62b17b2f24e8ed3063f398a1412eeae (patch) | |
| tree | 6853b0aa7ad72665b52849cb952af225ca7eba46 /crypto/drbg.c | |
| parent | d6648305e24043502a8b44b913ca32bef4884674 (diff) | |
| download | linux-crypto-a73b9524f62b17b2f24e8ed3063f398a1412eeae.tar.gz linux-crypto-a73b9524f62b17b2f24e8ed3063f398a1412eeae.zip | |
cryoto: drbg - clear all temporary memory
The buffer uses for temporary data must be cleared entirely. In AES192
the used buffer is drbg_statelen(drbg) + drbg_blocklen(drbg) as
documented in the comment above drbg_ctr_df.
This patch ensures that the temp buffer is completely wiped.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/drbg.c')
| -rw-r--r-- | crypto/drbg.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/drbg.c b/crypto/drbg.c index b69409cb..8d2944fa 100644 --- a/crypto/drbg.c +++ b/crypto/drbg.c @@ -487,7 +487,7 @@ static int drbg_ctr_df(struct drbg_state *drbg, out: memset(iv, 0, drbg_blocklen(drbg)); - memset(temp, 0, drbg_statelen(drbg)); + memset(temp, 0, drbg_statelen(drbg) + drbg_blocklen(drbg)); memset(pad, 0, drbg_blocklen(drbg)); return ret; } |