[PATCH v7 10/10] integrity: Asymmetric digsig supports SM2-with-SM3 algorithm
From: Tianjia Zhang <hidden>
Date: 2020-09-20 16:21:35
Also in:
keyrings, linux-arm-kernel, linux-crypto, linux-integrity, lkml
Subsystem:
extended verification module (evm), integrity measurement architecture (ima), security subsystem, the rest · Maintainers:
Mimi Zohar, Roberto Sassu, Dmitry Kasatkin, Paul Moore, James Morris, "Serge E. Hallyn", Linus Torvalds
Asymmetric digsig supports SM2-with-SM3 algorithm combination, so that IMA can also verify SM2's signature data. Signed-off-by: Tianjia Zhang <redacted> Tested-by: Xufeng Zhang <redacted> Reviewed-by: Mimi Zohar <zohar@linux.ibm.com> Reviewed-by: Vitaly Chikunov <redacted> --- security/integrity/digsig_asymmetric.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/security/integrity/digsig_asymmetric.c b/security/integrity/digsig_asymmetric.c
index cfa4127d0518..b86a4a8f61ab 100644
--- a/security/integrity/digsig_asymmetric.c
+++ b/security/integrity/digsig_asymmetric.c@@ -99,14 +99,22 @@ int asymmetric_verify(struct key *keyring, const char *sig, memset(&pks, 0, sizeof(pks)); pks.hash_algo = hash_algo_name[hdr->hash_algo]; - if (hdr->hash_algo == HASH_ALGO_STREEBOG_256 || - hdr->hash_algo == HASH_ALGO_STREEBOG_512) { + switch (hdr->hash_algo) { + case HASH_ALGO_STREEBOG_256: + case HASH_ALGO_STREEBOG_512: /* EC-RDSA and Streebog should go together. */ pks.pkey_algo = "ecrdsa"; pks.encoding = "raw"; - } else { + break; + case HASH_ALGO_SM3_256: + /* SM2 and SM3 should go together. */ + pks.pkey_algo = "sm2"; + pks.encoding = "raw"; + break; + default: pks.pkey_algo = "rsa"; pks.encoding = "pkcs1"; + break; } pks.digest = (u8 *)data; pks.digest_size = datalen;
--
2.19.1.3.ge56e4f7