Index: base/crypto/symmetric_key.h |
=================================================================== |
--- base/crypto/symmetric_key.h (revision 80572) |
+++ base/crypto/symmetric_key.h (working copy) |
@@ -1,105 +0,0 @@ |
-// 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. |
- |
-#ifndef BASE_CRYPTO_SYMMETRIC_KEY_H_ |
-#define BASE_CRYPTO_SYMMETRIC_KEY_H_ |
-#pragma once |
- |
-#include <string> |
- |
-#include "base/base_api.h" |
-#include "base/basictypes.h" |
- |
-#if defined(USE_NSS) |
-#include "base/crypto/scoped_nss_types.h" |
-#elif defined(OS_MACOSX) |
-#include <Security/cssmtype.h> |
-#elif defined(OS_WIN) |
-#include "base/crypto/scoped_capi_types.h" |
-#endif |
- |
-namespace base { |
- |
-// Wraps a platform-specific symmetric key and allows it to be held in a |
-// scoped_ptr. |
-class BASE_API SymmetricKey { |
- public: |
- // Defines the algorithm that a key will be used with. See also |
- // classs Encrptor. |
- enum Algorithm { |
- AES, |
- HMAC_SHA1, |
- }; |
- |
- virtual ~SymmetricKey(); |
- |
- // Generates a random key suitable to be used with |algorithm| and of |
- // |key_size_in_bits| bits. |
- // The caller is responsible for deleting the returned SymmetricKey. |
- static SymmetricKey* GenerateRandomKey(Algorithm algorithm, |
- size_t key_size_in_bits); |
- |
- // Derives a key from the supplied password and salt using PBKDF2, suitable |
- // for use with specified |algorithm|. Note |algorithm| is not the algorithm |
- // used to derive the key from the password. The caller is responsible for |
- // deleting the returned SymmetricKey. |
- static SymmetricKey* DeriveKeyFromPassword(Algorithm algorithm, |
- const std::string& password, |
- const std::string& salt, |
- size_t iterations, |
- size_t key_size_in_bits); |
- |
- // Imports an array of key bytes in |raw_key|. This key may have been |
- // generated by GenerateRandomKey or DeriveKeyFromPassword and exported with |
- // GetRawKey, or via another compatible method. The key must be of suitable |
- // size for use with |algorithm|. The caller owns the returned SymmetricKey. |
- static SymmetricKey* Import(Algorithm algorithm, const std::string& raw_key); |
- |
-#if defined(USE_OPENSSL) |
- const std::string& key() { return key_; } |
-#elif defined(USE_NSS) |
- PK11SymKey* key() const { return key_.get(); } |
-#elif defined(OS_MACOSX) |
- CSSM_DATA cssm_data() const; |
-#elif defined(OS_WIN) |
- HCRYPTKEY key() const { return key_.get(); } |
-#endif |
- |
- // Extracts the raw key from the platform specific data. |
- // Warning: |raw_key| holds the raw key as bytes and thus must be handled |
- // carefully. |
- bool GetRawKey(std::string* raw_key); |
- |
- private: |
-#if defined(USE_OPENSSL) |
- SymmetricKey() {} |
- std::string key_; |
-#elif defined(USE_NSS) |
- explicit SymmetricKey(PK11SymKey* key); |
- ScopedPK11SymKey key_; |
-#elif defined(OS_MACOSX) |
- SymmetricKey(const void* key_data, size_t key_size_in_bits); |
- std::string key_; |
-#elif defined(OS_WIN) |
- SymmetricKey(HCRYPTPROV provider, HCRYPTKEY key, |
- const void* key_data, size_t key_size_in_bytes); |
- |
- ScopedHCRYPTPROV provider_; |
- ScopedHCRYPTKEY key_; |
- |
- // Contains the raw key, if it is known during initialization and when it |
- // is likely that the associated |provider_| will be unable to export the |
- // |key_|. This is the case of HMAC keys when the key size exceeds 16 bytes |
- // when using the default RSA provider. |
- // TODO(rsleevi): See if KP_EFFECTIVE_KEYLEN is the reason why CryptExportKey |
- // fails with NTE_BAD_KEY/NTE_BAD_LEN |
- std::string raw_key_; |
-#endif |
- |
- DISALLOW_COPY_AND_ASSIGN(SymmetricKey); |
-}; |
- |
-} // namespace base |
- |
-#endif // BASE_CRYPTO_SYMMETRIC_KEY_H_ |