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Unified Diff: base/crypto/symmetric_key.h

Issue 6805019: Move crypto files out of base, to a top level directory. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: Created 9 years, 8 months ago
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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_

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