Remove passphrase dialog and last parts of elevation.

chrome/browser/managed_mode/managed_user_passphrase.cc

-// Copyright (c) 2013 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 "chrome/browser/managed_mode/managed_user_passphrase.h"
-
-#include "base/base64.h"
-#include "base/logging.h"
-#include "base/string_util.h"
-#include "crypto/encryptor.h"
-#include "crypto/random.h"
-#include "crypto/symmetric_key.h"
-
-namespace {
-
-// These constants are used as parameters when calling |DeriveKeyFromPassword|.
-const int kNumberOfIterations = 1;
-const int kDerivedKeySize = 128;
-const int kSaltSize = 32;
-
-} // namespace
-
-ManagedUserPassphrase::ManagedUserPassphrase(const std::string& salt)
-    : salt_(salt) {
-  if (salt_.empty())
-    GenerateRandomSalt();
-}
-
-ManagedUserPassphrase::~ManagedUserPassphrase() {
-}
-
-std::string ManagedUserPassphrase::GetSalt() {
-  return salt_;
-}
-
-void ManagedUserPassphrase::GenerateRandomSalt() {
-  std::string bytes;
-  crypto::RandBytes(WriteInto(&bytes, kSaltSize+1), kSaltSize);
-  bool success = base::Base64Encode(bytes, &salt_);
-  DCHECK(success);
-}
-
-bool ManagedUserPassphrase::GenerateHashFromPassphrase(
-    const std::string& passphrase,
-    std::string* encoded_passphrase_hash) const {
-  std::string passphrase_hash;
-  if (!GetPassphraseHash(passphrase, &passphrase_hash))
-    return false;
-  return base::Base64Encode(passphrase_hash, encoded_passphrase_hash);
-}
-
-bool ManagedUserPassphrase::GetPassphraseHash(
-    const std::string& passphrase,
-    std::string* passphrase_hash) const {
-  DCHECK(passphrase_hash);
-  // Create a hash from the user-provided passphrase and the randomly generated
-  // (or provided) salt.
-  scoped_ptr<crypto::SymmetricKey> encryption_key(
-      crypto::SymmetricKey::DeriveKeyFromPassword(
-          crypto::SymmetricKey::AES,
-          passphrase,
-          salt_,
-          kNumberOfIterations,
-          kDerivedKeySize));
-  return encryption_key->GetRawKey(passphrase_hash);
-}