Move crypto files out of base, to a top level directory.
src/crypto is now an independent project that contains our
cryptographic primitives (except md5 and sha1).
This removes the base dependency from nss, openssl and sqlite.
BUG=76996
TEST=none
Review URL: http://codereview.chromium.org/6805019
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@81611 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/crypto/encryptor.h b/crypto/encryptor.h
new file mode 100644
index 0000000..d8250f6b
--- /dev/null
+++ b/crypto/encryptor.h
@@ -0,0 +1,69 @@
+// 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 CRYPTO_ENCRYPTOR_H_
+#define CRYPTO_ENCRYPTOR_H_
+#pragma once
+
+#include <string>
+
+#include "build/build_config.h"
+
+#if defined(USE_NSS)
+#include "crypto/scoped_nss_types.h"
+#elif defined(OS_WIN)
+#include "crypto/scoped_capi_types.h"
+#endif
+
+namespace crypto {
+
+class SymmetricKey;
+
+class Encryptor {
+ public:
+ enum Mode {
+ CBC
+ };
+ Encryptor();
+ virtual ~Encryptor();
+
+ // Initializes the encryptor using |key| and |iv|. Returns false if either the
+ // key or the initialization vector cannot be used.
+ bool Init(SymmetricKey* key, Mode mode, const std::string& iv);
+
+ // Encrypts |plaintext| into |ciphertext|.
+ bool Encrypt(const std::string& plaintext, std::string* ciphertext);
+
+ // Decrypts |ciphertext| into |plaintext|.
+ bool Decrypt(const std::string& ciphertext, std::string* plaintext);
+
+ // TODO(albertb): Support streaming encryption.
+
+ private:
+ SymmetricKey* key_;
+ Mode mode_;
+
+#if defined(USE_OPENSSL)
+ bool Crypt(bool encrypt, // Pass true to encrypt, false to decrypt.
+ const std::string& input,
+ std::string* output);
+ std::string iv_;
+#elif defined(USE_NSS)
+ ScopedPK11Slot slot_;
+ ScopedSECItem param_;
+#elif defined(OS_MACOSX)
+ bool Crypt(int /*CCOperation*/ op,
+ const std::string& input,
+ std::string* output);
+
+ std::string iv_;
+#elif defined(OS_WIN)
+ ScopedHCRYPTKEY capi_key_;
+ DWORD block_size_;
+#endif
+};
+
+} // namespace crypto
+
+#endif // CRYPTO_ENCRYPTOR_H_
