Introduce RSAPrivateKey::SignDigest

crypto/signature_creator_nss.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "crypto/signature_creator.h"
 
 #include <cryptohi.h>
 #include <keyhi.h>
 #include <stdlib.h>
 
@@ skipping 25 matching lines @@
 
   SECStatus rv = SGN_Begin(result->sign_context_);
   if (rv != SECSuccess) {
     NOTREACHED();
     return NULL;
   }
 
   return result.release();
 }
 
+// static
+bool SignatureCreator::Sign(RSAPrivateKey* key,
+                            const uint8* data,
+                            int data_len,
+                            std::vector<uint8>* signature) {
+  SECItem data_item;
+  data_item.type = siBuffer;
+  data_item.data = const_cast<unsigned char*>(data);
+  data_item.len = data_len;
+
+  SECItem signature_item;
+  SECStatus rv = SGN_Digest(key->key(), SEC_OID_SHA1, &signature_item,
+                            &data_item);
+  if (rv != SECSuccess) {
+    NOTREACHED();
+    return false;
+  }
+  signature->assign(signature_item.data,
+                    signature_item.data + signature_item.len);
+  SECITEM_FreeItem(&signature_item, PR_FALSE);
+  return true;
+}
+
 bool SignatureCreator::Update(const uint8* data_part, int data_part_len) {
   // TODO(wtc): Remove this const_cast when we require NSS 3.12.5.
   // See NSS bug https://bugzilla.mozilla.org/show_bug.cgi?id=518255
   SECStatus rv = SGN_Update(sign_context_,
                             const_cast<unsigned char*>(data_part),
                             data_part_len);
   if (rv != SECSuccess) {
     NOTREACHED();
     return false;
   }
@@ skipping 14 matching lines @@
   return true;
 }
 
 SignatureCreator::SignatureCreator()
     : key_(NULL),
       sign_context_(NULL) {
   EnsureNSSInit();
 }
 
 }  // namespace crypto