Messages in this thread Patch in this message | | | From | Vitaly Chikunov <> | Subject | [PATCH v7 11/11] integrity: support EC-RDSA signatures for asymmetric_verify | Date | Fri, 1 Mar 2019 20:59:18 +0300 |
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Allow to use EC-RDSA signatures for IMA by determining signature type by the hash algorithm name. This works good for EC-RDSA since Streebog and EC-RDSA should always be used together.
Cc: Mimi Zohar <zohar@linux.ibm.com> Cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com> Cc: linux-integrity@vger.kernel.org Signed-off-by: Vitaly Chikunov <vt@altlinux.org> --- security/integrity/digsig_asymmetric.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/security/integrity/digsig_asymmetric.c b/security/integrity/digsig_asymmetric.c index d775e03fbbcc..99080871eb9f 100644 --- a/security/integrity/digsig_asymmetric.c +++ b/security/integrity/digsig_asymmetric.c @@ -104,9 +104,16 @@ int asymmetric_verify(struct key *keyring, const char *sig, memset(&pks, 0, sizeof(pks)); - pks.pkey_algo = "rsa"; pks.hash_algo = hash_algo_name[hdr->hash_algo]; - pks.encoding = "pkcs1"; + if (hdr->hash_algo == HASH_ALGO_STREEBOG_256 || + hdr->hash_algo == HASH_ALGO_STREEBOG_512) { + /* EC-RDSA and Streebog should go together. */ + pks.pkey_algo = "ecrdsa"; + pks.encoding = "raw"; + } else { + pks.pkey_algo = "rsa"; + pks.encoding = "pkcs1"; + } pks.digest = (u8 *)data; pks.digest_size = datalen; pks.s = hdr->sig; -- 2.11.0
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