X-Git-Url: https://wagner.pp.ru/gitweb/?a=blobdiff_plain;f=gost_gost2015.c;h=a9e3d351f3cd30907007099be9f99d0293a62dd9;hb=15066ba010e653efb062087f81d86e1ede1692cf;hp=c0a914d80da563b4d5f9280f3fdc49392cefe304;hpb=f1aa1602d4aa644a6944d7c01a808fea4947e4e8;p=openssl-gost%2Fengine.git

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;
+}