linux/arch/s390/crypto
Eric Biggers a208fa8f33 crypto: hash - annotate algorithms taking optional key
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>
2018-01-12 23:03:35 +11:00
..
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
aes_s390.c s390: crypto: Remove redundant license text 2017-11-24 15:37:23 +01:00
arch_random.c s390: crypto: Remove redundant license text 2017-11-24 15:37:23 +01:00
crc32-vx.c crypto: hash - annotate algorithms taking optional key 2018-01-12 23:03:35 +11:00
crc32be-vx.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crc32le-vx.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
des_s390.c s390: crypto: Remove redundant license text 2017-11-24 15:37:23 +01:00
ghash_s390.c s390: crypto: add SPDX identifiers to the remaining files 2017-11-24 15:37:14 +01:00
paes_s390.c s390: crypto: Remove redundant license text 2017-11-24 15:37:23 +01:00
prng.c s390: crypto: add SPDX identifiers to the remaining files 2017-11-24 15:37:14 +01:00
sha.h s390: crypto: Remove redundant license text 2017-11-24 15:37:23 +01:00
sha1_s390.c s390: Remove redudant license text 2017-12-05 07:51:09 +01:00
sha256_s390.c s390: crypto: Remove redundant license text 2017-11-24 15:37:23 +01:00
sha512_s390.c s390: crypto: Remove redundant license text 2017-11-24 15:37:23 +01:00
sha_common.c s390: crypto: Remove redundant license text 2017-11-24 15:37:23 +01:00