1 files changed, 25 insertions, 1 deletions

diff --git a/src/lib/libcrypto/dsa/dsa_ameth.c b/src/lib/libcrypto/dsa/dsa_ameth.c
index 85ef234bb9..cfb33237ec 100644
--- a/src/lib/libcrypto/dsa/dsa_ameth.c
+++ b/src/lib/libcrypto/dsa/dsa_ameth.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: dsa_ameth.c,v 1.27 2019/01/20 01:56:59 tb Exp $ */
+/* $OpenBSD: dsa_ameth.c,v 1.28 2019/11/01 15:15:35 jsing Exp $ */
 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project 2006.
  */
@@ -62,6 +62,7 @@
 
 #include <openssl/asn1.h>
 #include <openssl/bn.h>
+#include <openssl/cms.h>
 #include <openssl/dsa.h>
 #include <openssl/err.h>
 #include <openssl/x509.h>
@@ -604,6 +605,29 @@ dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
                 }
                 return 1;
 
+#ifndef OPENSSL_NO_CMS
+        case ASN1_PKEY_CTRL_CMS_SIGN:
+                if (arg1 == 0) {
+                        int snid, hnid;
+                        X509_ALGOR *alg1, *alg2;
+
+                        CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2);
+                        if (alg1 == NULL || alg1->algorithm == NULL)
+                                return -1;
+                        hnid = OBJ_obj2nid(alg1->algorithm);
+                        if (hnid == NID_undef)
+                                return -1;
+                        if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
+                                return -1;
+                        X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
+                }
+                return 1;
+
+        case ASN1_PKEY_CTRL_CMS_RI_TYPE:
+                *(int *)arg2 = CMS_RECIPINFO_NONE;
+                return 1;
+#endif
+
         case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
                 *(int *)arg2 = NID_sha1;
                 return 2;