Update S/MIME code to use default digest.

[openssl.git] / crypto / pkcs7 / pk7_lib.c

diff --git a/crypto/pkcs7/pk7_lib.c b/crypto/pkcs7/pk7_lib.c
index 2962eb4f3a10ee43ba24eb23cfd60265c083cd2f..92d033fe0269b5e449814837cc110d1721b9fa47 100644 (file)
--- a/crypto/pkcs7/pk7_lib.c
+++ b/crypto/pkcs7/pk7_lib.c
@@ -390,6 +390,20 @@ PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey,
        {
        PKCS7_SIGNER_INFO *si;
 
+       if (dgst == NULL)
+               {
+               int def_nid;
+               if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
+                       goto err;
+               dgst = EVP_get_digestbynid(def_nid);
+               if (dgst == NULL)
+                       {
+                       PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE,
+                                               PKCS7_R_NO_DEFAULT_DIGEST);
+                       goto err;
+                       }
+               }
+
        if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err;
        if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err;
        if (!PKCS7_add_signer(p7,si)) goto err;