Digest string helper function.

[thirdparty/openssl.git] / crypto / evp / pmeth_lib.c

diff --git a/crypto/evp/pmeth_lib.c b/crypto/evp/pmeth_lib.c
index 98b90ebddedc616fdae7641ebd1419bab0fa423d..d76746c0e94162cfb6027716c3bcbe55d4503a4c 100644 (file)
--- a/crypto/evp/pmeth_lib.c
+++ b/crypto/evp/pmeth_lib.c
@@ -330,14 +330,9 @@ int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
         return -2;
     }
-    if (strcmp(name, "digest") == 0) {
-        const EVP_MD *md;
-        if (value == NULL || (md = EVP_get_digestbyname(value)) == NULL) {
-            EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_INVALID_DIGEST);
-            return 0;
-        }
-        return EVP_PKEY_CTX_set_signature_md(ctx, md);
-    }
+    if (strcmp(name, "digest") == 0)
+        return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
+                               value);
     return ctx->pmeth->ctrl_str(ctx, name, value);
 }
 
@@ -367,6 +362,16 @@ int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
     OPENSSL_free(bin);
     return rv;
 }
+/* Pass a message digest to a ctrl */
+int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
+{
+    const EVP_MD *m;
+    if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
+        EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
+        return 0;
+    }
+    return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
+}
 
 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 {