Add support for default public key digest type ctrl.

[openssl.git] / crypto / dsa / dsa_ameth.c

diff --git a/crypto/dsa/dsa_ameth.c b/crypto/dsa/dsa_ameth.c
index 56d2099ba4ed3c4a533fe3d448bfe27be20e0b1f..e221fada34433608b115eb0842685c0840ed5bad 100644 (file)
--- a/crypto/dsa/dsa_ameth.c
+++ b/crypto/dsa/dsa_ameth.c
@@ -400,7 +400,7 @@ static void int_dsa_free(EVP_PKEY *pkey)
 
 static void update_buflen(const BIGNUM *b, size_t *pbuflen)
        {
-       int i;
+       size_t i;
        if (!b)
                return;
        if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
@@ -528,6 +528,33 @@ static int old_dsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
        return i2d_DSAPrivateKey(pkey->pkey.dsa, pder);
        }
 
+static int dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
+       {
+       switch (op)
+               {
+               case ASN1_PKEY_CTRL_PKCS7_SIGN:
+               if (arg1 == 0)
+                       {
+                       X509_ALGOR *alg1, *alg2;
+                       PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
+                       X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_sha1),
+                                                       V_ASN1_NULL, 0);
+                       X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_dsaWithSHA1),
+                                                       V_ASN1_UNDEF, 0);
+                       }
+               return 1;
+
+               case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
+               *(int *)arg2 = NID_sha1;
+               return 2;
+
+               default:
+               return -2;
+
+               }
+
+       }
+
 /* NB these are sorted in pkey_id order, lowest first */
 
 const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[] = 
@@ -585,7 +612,7 @@ const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[] =
                dsa_param_print,
 
                int_dsa_free,
-               0,
+               dsa_pkey_ctrl,
                old_dsa_priv_decode,
                old_dsa_priv_encode
                }