mirror of https://gitee.com/openkylin/linux.git
a208fa8f33
We need to consistently enforce that keyed hashes cannot be used without setting the key. To do this we need a reliable way to determine whether a given hash algorithm is keyed or not. AF_ALG currently does this by checking for the presence of a ->setkey() method. However, this is actually slightly broken because the CRC-32 algorithms implement ->setkey() but can also be used without a key. (The CRC-32 "key" is not actually a cryptographic key but rather represents the initial state. If not overridden, then a default initial state is used.) Prepare to fix this by introducing a flag CRYPTO_ALG_OPTIONAL_KEY which indicates that the algorithm has a ->setkey() method, but it is not required to be called. Then set it on all the CRC-32 algorithms. The same also applies to the Adler-32 implementation in Lustre. Also, the cryptd and mcryptd templates have to pass through the flag from their underlying algorithm. Cc: stable@vger.kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|---|---|---|
| .. | ||
| Makefile | ||
| aes_s390.c | ||
| arch_random.c | ||
| crc32-vx.c | ||
| crc32be-vx.S | ||
| crc32le-vx.S | ||
| des_s390.c | ||
| ghash_s390.c | ||
| paes_s390.c | ||
| prng.c | ||
| sha.h | ||
| sha1_s390.c | ||
| sha256_s390.c | ||
| sha512_s390.c | ||
| sha_common.c | ||