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| author | Dmitry Belyavskiy <beldmit@gmail.com> | 2020-05-09 13:18:32 +0300 |
|---|---|---|
| committer | Dmitry Belyavskiy <beldmit@gmail.com> | 2020-05-09 13:18:32 +0300 |
| commit | 15066ba010e653efb062087f81d86e1ede1692cf (patch) | |
| tree | 86e6d3cb41a53bec1d05707913a3239a0ef6f4bc /gost_gost2015.c | |
| parent | 3c0db93862faa4b5f302bf6f310c5f86f4dded24 (diff) | |
| download | gost-engine-15066ba010e653efb062087f81d86e1ede1692cf.zip gost-engine-15066ba010e653efb062087f81d86e1ede1692cf.tar.gz gost-engine-15066ba010e653efb062087f81d86e1ede1692cf.tar.bz2 | |
Refactoring unprotected attributes processing
Diffstat (limited to 'gost_gost2015.c')
| -rw-r--r-- | gost_gost2015.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gost_gost2015.c b/gost_gost2015.c index c0a914d..a9e3d35 100644 --- a/gost_gost2015.c +++ b/gost_gost2015.c @@ -120,3 +120,23 @@ end: GOST2015_CIPHER_PARAMS_free(gcp); return ret; } + +int gost2015_process_unprotected_attributes(STACK_OF(X509_ATTRIBUTE) *attrs, + int encryption, size_t mac_len, unsigned char *final_tag) +{ + if (encryption == 0) /*Decrypting*/ { + ASN1_OCTET_STRING *osExpectedMac = X509at_get0_data_by_OBJ(attrs, + OBJ_txt2obj(OID_GOST_CMS_MAC, 1), -3, V_ASN1_OCTET_STRING); + + if (!osExpectedMac || osExpectedMac->length != (int)mac_len) + return -1; + + memcpy(final_tag, osExpectedMac->data, osExpectedMac->length); + } else { + if (attrs == NULL) + return -1; + return (X509at_add1_attr_by_OBJ(&attrs, OBJ_txt2obj(OID_GOST_CMS_MAC, 1), + V_ASN1_OCTET_STRING, final_tag, mac_len) == NULL) ? -1 : 1; + } + return 1; +} |