Change EVP_MAC method from copy to dup

[openssl.git] / crypto / gmac / gmac.c

diff --git a/crypto/gmac/gmac.c b/crypto/gmac/gmac.c
index 5e3891f..0e2eda3 100644 (file)
--- a/crypto/gmac/gmac.c
+++ b/crypto/gmac/gmac.c
@@ -39,11 +39,23 @@ static EVP_MAC_IMPL *gmac_new(void)
     return gctx;
 }
 
-static int gmac_copy(EVP_MAC_IMPL *gdst, EVP_MAC_IMPL *gsrc)
+static EVP_MAC_IMPL *gmac_dup(const EVP_MAC_IMPL *gsrc)
 {
+    EVP_MAC_IMPL *gdst;
+
+    gdst = gmac_new();
+    if (gdst == NULL)
+        return NULL;
+
+    if (!EVP_CIPHER_CTX_copy(gdst->ctx, gsrc->ctx)) {
+        gmac_free(gdst);
+        return NULL;
+    }
+
     gdst->cipher = gsrc->cipher;
     gdst->engine = gsrc->engine;
-    return EVP_CIPHER_CTX_copy(gdst->ctx, gsrc->ctx);
+
+    return gdst;
 }
 
 static size_t gmac_size(EVP_MAC_IMPL *gctx)
@@ -172,7 +184,7 @@ static int gmac_ctrl_str(EVP_MAC_IMPL *gctx, const char *type,
 const EVP_MAC gmac_meth = {
     EVP_MAC_GMAC,
     gmac_new,
-    gmac_copy,
+    gmac_dup,
     gmac_free,
     gmac_size,
     gmac_init,