diff options
Diffstat (limited to 'crypto/shash.c')
| -rw-r--r-- | crypto/shash.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/crypto/shash.c b/crypto/shash.c index fd92c03b38fc..e54328364a85 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -45,8 +45,7 @@ static int shash_setkey_unaligned(struct crypto_shash *tfm, const u8 *key, alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); memcpy(alignbuffer, key, keylen); err = shash->setkey(tfm, alignbuffer, keylen); - memset(alignbuffer, 0, keylen); - kfree(buffer); + kzfree(buffer); return err; } @@ -79,13 +78,16 @@ static int shash_update_unaligned(struct shash_desc *desc, const u8 *data, ((unsigned long)data & alignmask); u8 buf[shash_align_buffer_size(unaligned_len, alignmask)] __attribute__ ((aligned)); + int err; if (unaligned_len > len) unaligned_len = len; memcpy(buf, data, unaligned_len); + err = shash->update(desc, buf, unaligned_len); + memset(buf, 0, unaligned_len); - return shash->update(desc, buf, unaligned_len) ?: + return err ?: shash->update(desc, data + unaligned_len, len - unaligned_len); } @@ -114,7 +116,13 @@ static int shash_final_unaligned(struct shash_desc *desc, u8 *out) int err; err = shash->final(desc, buf); + if (err) + goto out; + memcpy(out, buf, ds); + +out: + memset(buf, 0, ds); return err; } |