linux-next/security/integrity
THOBY Simon 8510505d55 IMA: remove the dependency on CRYPTO_MD5
MD5 is a weak digest algorithm that shouldn't be used for cryptographic
operation. It hinders the efficiency of a patch set that aims to limit
the digests allowed for the extended file attribute namely security.ima.
MD5 is no longer a requirement for IMA, nor should it be used there.

The sole place where we still use the MD5 algorithm inside IMA is setting
the ima_hash algorithm to MD5, if the user supplies 'ima_hash=md5'
parameter on the command line.  With commit ab60368ab6 ("ima: Fallback
to the builtin hash algorithm"), setting "ima_hash=md5" fails gracefully
when CRYPTO_MD5 is not set:
	ima: Can not allocate md5 (reason: -2)
	ima: Allocating md5 failed, going to use default hash algorithm sha256

Remove the CRYPTO_MD5 dependency for IMA.

Signed-off-by: THOBY Simon <Simon.THOBY@viveris.fr>
Reviewed-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
[zohar@linux.ibm.com: include commit number in patch description for
stable.]
Cc: stable@vger.kernel.org # 4.17
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
2021-08-16 17:29:10 -04:00
..
evm evm: Check xattr size discrepancy between kernel and user 2021-06-21 08:34:21 -04:00
ima IMA: remove the dependency on CRYPTO_MD5 2021-08-16 17:29:10 -04:00
platform_certs integrity: Load mokx variables into the blacklist keyring 2021-03-11 16:34:48 +00:00
digsig_asymmetric.c ima: Support EC keys for signature verification 2021-03-26 19:41:59 +11:00
digsig.c ima: enable loading of build time generated key on .ima keyring 2021-04-09 10:40:20 -04:00
iint.c evm: Load EVM key in ima_load_x509() to avoid appraisal 2021-05-21 12:47:04 -04:00
integrity_audit.c integrity: Use current_uid() in integrity_audit_message() 2020-08-31 17:46:50 -04:00
integrity.h crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
Kconfig powerpc: Load firmware trusted keys/hashes into kernel keyring 2019-11-13 00:33:23 +11:00
Makefile powerpc: Load firmware trusted keys/hashes into kernel keyring 2019-11-13 00:33:23 +11:00