Update EVP_MD_CTX_copy_ex() to use EVP_PKEY_CTX_dup().

crypto/evp/digest.c

@@ -279,6 +279,16 @@ int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in)
 		memcpy(out->md_data,in->md_data,out->digest->ctx_size);
 		}
 
+	if (in->pctx)
+		{
+		out->pctx = EVP_PKEY_CTX_dup(in->pctx);
+		if (!out->pctx)
+			{
+			EVP_MD_CTX_cleanup(out);
+			return 0;
+			}
+		}
+
 	if (out->digest->copy)
 		return out->digest->copy(out,in);
 	

crypto/evp/evp.h

@@ -960,6 +960,7 @@ int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth);
 
 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
+EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
 
 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,

util/libeay.num

@@ -3707,3 +3707,4 @@ EVP_DigestSignInit                      4102	EXIST::FUNCTION:
 EVP_DigestVerifyFinal                   4103	EXIST::FUNCTION:
 EVP_DigestVerifyInit                    4104	EXIST::FUNCTION:
 EVP_DigestSignFinal                     4105	EXIST::FUNCTION:
+EVP_PKEY_CTX_dup                        4106	EXIST::FUNCTION: