Removing crypto/third_party/nss/ and removing crypto _win files

crypto/symmetric_key_openssl.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.
-
-#include "crypto/symmetric_key.h"
-
-#include <openssl/evp.h>
-#include <openssl/rand.h>
-#include <stddef.h>
-#include <stdint.h>
-
-#include <algorithm>
-#include <memory>
-
-#include "base/logging.h"
-#include "base/strings/string_util.h"
-#include "crypto/openssl_util.h"
-
-namespace crypto {
-
-SymmetricKey::~SymmetricKey() {
-  std::fill(key_.begin(), key_.end(), '\0');  // Zero out the confidential key.
-}
-
-// static
-SymmetricKey* SymmetricKey::GenerateRandomKey(Algorithm algorithm,
-                                              size_t key_size_in_bits) {
-  DCHECK_EQ(AES, algorithm);
-
-  // Whitelist supported key sizes to avoid accidentaly relying on
-  // algorithms available in NSS but not BoringSSL and vice
-  // versa. Note that BoringSSL does not support AES-192.
-  if (key_size_in_bits != 128 && key_size_in_bits != 256)
-    return NULL;
-
-  size_t key_size_in_bytes = key_size_in_bits / 8;
-  DCHECK_EQ(key_size_in_bits, key_size_in_bytes * 8);
-
-  if (key_size_in_bytes == 0)
-    return NULL;
-
-  OpenSSLErrStackTracer err_tracer(FROM_HERE);
-  std::unique_ptr<SymmetricKey> key(new SymmetricKey);
-  uint8_t* key_data = reinterpret_cast<uint8_t*>(
-      base::WriteInto(&key->key_, key_size_in_bytes + 1));
-
-  int rv = RAND_bytes(key_data, static_cast<int>(key_size_in_bytes));
-  return rv == 1 ? key.release() : NULL;
-}
-
-// static
-SymmetricKey* SymmetricKey::DeriveKeyFromPassword(Algorithm algorithm,
-                                                  const std::string& password,
-                                                  const std::string& salt,
-                                                  size_t iterations,
-                                                  size_t key_size_in_bits) {
-  DCHECK(algorithm == AES || algorithm == HMAC_SHA1);
-
-  if (algorithm == AES) {
-    // Whitelist supported key sizes to avoid accidentaly relying on
-    // algorithms available in NSS but not BoringSSL and vice
-    // versa. Note that BoringSSL does not support AES-192.
-    if (key_size_in_bits != 128 && key_size_in_bits != 256)
-      return NULL;
-  }
-
-  size_t key_size_in_bytes = key_size_in_bits / 8;
-  DCHECK_EQ(key_size_in_bits, key_size_in_bytes * 8);
-
-  if (key_size_in_bytes == 0)
-    return NULL;
-
-  OpenSSLErrStackTracer err_tracer(FROM_HERE);
-  std::unique_ptr<SymmetricKey> key(new SymmetricKey);
-  uint8_t* key_data = reinterpret_cast<uint8_t*>(
-      base::WriteInto(&key->key_, key_size_in_bytes + 1));
-  int rv = PKCS5_PBKDF2_HMAC_SHA1(
-      password.data(), password.length(),
-      reinterpret_cast<const uint8_t*>(salt.data()), salt.length(), iterations,
-      static_cast<int>(key_size_in_bytes), key_data);
-  return rv == 1 ? key.release() : NULL;
-}
-
-// static
-SymmetricKey* SymmetricKey::Import(Algorithm algorithm,
-                                   const std::string& raw_key) {
-  if (algorithm == AES) {
-    // Whitelist supported key sizes to avoid accidentaly relying on
-    // algorithms available in NSS but not BoringSSL and vice
-    // versa. Note that BoringSSL does not support AES-192.
-    if (raw_key.size() != 128/8 && raw_key.size() != 256/8)
-      return NULL;
-  }
-
-  std::unique_ptr<SymmetricKey> key(new SymmetricKey);
-  key->key_ = raw_key;
-  return key.release();
-}
-
-bool SymmetricKey::GetRawKey(std::string* raw_key) {
-  *raw_key = key_;
-  return true;
-}
-
-}  // namespace crypto