Added crypto random-number generator

crypto/p224_spake.cc

 // Copyright (c) 2011 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.
 
 // This code implements SPAKE2, a variant of EKE:
 //  http://www.di.ens.fr/~pointche/pub.php?reference=AbPo04
 
 #include <crypto/p224_spake.h>
 
 #include <base/logging.h>
-#include <base/rand_util.h>
 #include <crypto/p224.h>
+#include <crypto/random.h>
 #include <crypto/secure_util.h>
 
 namespace {
 
 // The following two points (M and N in the protocol) are verifiable random
 // points on the curve and can be generated with the following code:
 
 // #include <stdint.h>
 // #include <stdio.h>
 // #include <string.h>
@@ skipping 73 matching lines @@
 namespace crypto {
 
 P224EncryptedKeyExchange::P224EncryptedKeyExchange(
     PeerType peer_type, const base::StringPiece& password)
     : state_(kStateInitial),
       is_server_(peer_type == kPeerTypeServer) {
   memset(&x_, 0, sizeof(x_));
   memset(&expected_authenticator_, 0, sizeof(expected_authenticator_));
 
   // x_ is a random scalar.
-  base::RandBytes(x_, sizeof(x_));
+  RandBytes(x_, sizeof(x_));
 
   // X = g**x_
   p224::Point X;
   p224::ScalarBaseMult(x_, &X);
 
   // Calculate |password| hash to get SPAKE password value.
   SHA256HashString(std::string(password.data(), password.length()),
                    pw_, sizeof(pw_));
 
   // The client masks the Diffie-Hellman value, X, by adding M**pw and the
@@ skipping 122 matching lines @@
 const std::string& P224EncryptedKeyExchange::error() const {
   return error_;
 }
 
 const std::string& P224EncryptedKeyExchange::GetKey() {
   DCHECK_EQ(state_, kStateDone);
   return key_;
 }
 
 }  // namespace crypto