diff options
Diffstat (limited to 'crypto/cipher.c')
| -rw-r--r-- | crypto/cipher.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/crypto/cipher.c b/crypto/cipher.c index 8da644364cb4..dfd4bcfc5975 100644 --- a/crypto/cipher.c +++ b/crypto/cipher.c @@ -191,6 +191,8 @@ static unsigned int cbc_process_encrypt(const struct cipher_desc *desc, u8 *iv = desc->info; unsigned int done = 0; + nbytes -= bsize; + do { xor(iv, src); fn(crypto_tfm_ctx(tfm), dst, iv); @@ -198,7 +200,7 @@ static unsigned int cbc_process_encrypt(const struct cipher_desc *desc, src += bsize; dst += bsize; - } while ((done += bsize) < nbytes); + } while ((done += bsize) <= nbytes); return done; } @@ -219,6 +221,8 @@ static unsigned int cbc_process_decrypt(const struct cipher_desc *desc, u8 *iv = desc->info; unsigned int done = 0; + nbytes -= bsize; + do { u8 *tmp_dst = *dst_p; @@ -230,7 +234,7 @@ static unsigned int cbc_process_decrypt(const struct cipher_desc *desc, src += bsize; dst += bsize; - } while ((done += bsize) < nbytes); + } while ((done += bsize) <= nbytes); return done; } @@ -243,12 +247,14 @@ static unsigned int ecb_process(const struct cipher_desc *desc, u8 *dst, void (*fn)(void *, u8 *, const u8 *) = desc->crfn; unsigned int done = 0; + nbytes -= bsize; + do { fn(crypto_tfm_ctx(tfm), dst, src); src += bsize; dst += bsize; - } while ((done += bsize) < nbytes); + } while ((done += bsize) <= nbytes); return done; } @@ -377,11 +383,7 @@ static int nocrypt_iv(struct crypto_tfm *tfm, int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags) { u32 mode = flags & CRYPTO_TFM_MODE_MASK; - tfm->crt_cipher.cit_mode = mode ? mode : CRYPTO_TFM_MODE_ECB; - if (flags & CRYPTO_TFM_REQ_WEAK_KEY) - tfm->crt_flags = CRYPTO_TFM_REQ_WEAK_KEY; - return 0; } |