New function to dup EVP_PKEY_CTX. This will be needed to make new signing

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

diff --git a/crypto/dsa/dsa_pmeth.c b/crypto/dsa/dsa_pmeth.c
index 9909dc8f3b7476514b3b0a9534e6c2314a76bdd1..cdd6440dc37f25a97b8b36657783fa8272271170 100644 (file)
--- a/crypto/dsa/dsa_pmeth.c
+++ b/crypto/dsa/dsa_pmeth.c
@@ -91,6 +91,18 @@ static int pkey_dsa_init(EVP_PKEY_CTX *ctx)
        return 1;
        }
 
+static int pkey_dsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
+       {
+       DSA_PKEY_CTX *dctx, *sctx;
+       if (!pkey_dsa_init(dst))
+               return 0;
+               sctx = src->data;
+       dctx = dst->data;
+       dctx->nbits = sctx->nbits;
+       dctx->md = sctx->md;
+       return 1;
+       }
+
 static void pkey_dsa_cleanup(EVP_PKEY_CTX *ctx)
        {
        DSA_PKEY_CTX *dctx = ctx->data;
@@ -223,6 +235,7 @@ const EVP_PKEY_METHOD dsa_pkey_meth =
        EVP_PKEY_DSA,
        EVP_PKEY_FLAG_AUTOARGLEN,
        pkey_dsa_init,
+       pkey_dsa_copy,
        pkey_dsa_cleanup,
 
        0,