-/*
- * Copyright (c) 2010-2011 Apple Inc. All Rights Reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-/*!
- @header EncryptTransform
- Provide the implementation class for the Encryption and Decryption
- transforms
-
- */
-
-#if !defined(__ENCRYPT_TRANSFORM__)
-#define __ENCRYPT_TRANSFORM__ 1
-
-#include <CommonCrypto/CommonCryptor.h>
-#include <CoreFoundation/CoreFoundation.h>
-#include <Security/cssmapi.h>
-#include <Security/cssmapple.h>
-#include <Security/cssmtype.h>
-#include <Security/SecKey.h>
-#include "Transform.h"
-#include "TransformFactory.h"
-
-
-class EncryptDecryptBase : public Transform
-{
-protected:
- CSSM_PADDING m_cssm_padding;
- CSSM_ENCRYPT_MODE m_mode;
- CSSM_KEY_PTR m_cssm_key; // The cssm key from the reference key
- CSSM_CC_HANDLE m_handle; // The context for this key either encrypt or decrypt
- Boolean m_forEncryption;
- Boolean m_oaep_padding;
- CFMutableDataRef m_processedData;
- // for "single chunk" modes or paddings (i.e. OAEP) m_accumulator accumulates all the raw cleartext until EOS.
- CFMutableDataRef m_accumulator;
- SecTransformAttributeRef inputAH;
-
- // Used to serialize CDSA setup operations for encrypt/decrypt on a given key
- static dispatch_once_t serializerSetUp;
- static dispatch_queue_t serializerTransformStartingExecution;
-
- virtual void Finalize();
- virtual Boolean TransformCanExecute();
- virtual CFErrorRef TransformStartingExecution();
- CFErrorRef SerializedTransformStartingExecution();
- virtual void AttributeChanged(SecTransformAttributeRef ah, CFTypeRef value);
-
- CFDataRef apply_oaep_padding(CFDataRef value);
- CFDataRef remove_oaep_padding(CFDataRef value);
-
- EncryptDecryptBase(CFStringRef type);
-
- virtual ~EncryptDecryptBase();
-
- void SendCSSMError(CSSM_RETURN error);
-
-public:
- // overload to return a CFDictionary that contains the state of your transform. Values returned should be
- // serializable. Remember that this state will be restored before SecTransformExecute is called. Do not
- // include the transform name in your state (this will be done for you by SecTransformCopyExternalRepresentation).
- virtual CFDictionaryRef CopyState();
-
- // overload to restore the state of your transform
- virtual void RestoreState(CFDictionaryRef state);
-
- // your own routines
- virtual bool InitializeObject(SecKeyRef key, CFErrorRef *error);
-
-
-};
-
-
-class EncryptTransform : public EncryptDecryptBase
-{
-protected:
-
-public:
-
- static TransformFactory* MakeTransformFactory();
-
-public:
-
-protected:
- EncryptTransform() ;
-
-public:
- virtual ~EncryptTransform();
- static SecTransformRef Make();
-};
-
-
-
-class DecryptTransform : public EncryptDecryptBase
-{
-protected:
-
-public:
-
- static TransformFactory* MakeTransformFactory();
-
-public:
-
-protected:
- DecryptTransform();
-
-public:
- virtual ~DecryptTransform();
- static SecTransformRef Make();
-};
-
-
-#endif /* !__ENCRYPT_TRANSFORM__ */
projects / apple / security.git / blobdiff