X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/Security/libsecurity_apple_csp/lib/desContext.h?ds=sidebyside

diff --git a/Security/libsecurity_apple_csp/lib/desContext.h b/Security/libsecurity_apple_csp/lib/desContext.h
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+/*
+ * Copyright (c) 2000-2001,2011,2013-2014 Apple Inc. All Rights Reserved.
+ * 
+ * The contents of this file constitute Original Code as defined in and are
+ * subject to the Apple Public Source License Version 1.2 (the 'License').
+ * You may not use this file except in compliance with the License. Please obtain
+ * a copy of the License at http://www.apple.com/publicsource and read it before
+ * using this file.
+ * 
+ * This 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.
+ */
+
+
+/*
+ * desContext.h - glue between BlockCrytpor and DES/3DES implementations
+ */
+#ifndef _DES_CONTEXT_H_
+#define _DES_CONTEXT_H_
+
+#include <security_cdsa_plugin/CSPsession.h>
+#include "AppleCSP.h"
+#include "AppleCSPContext.h"
+#include "AppleCSPSession.h"
+#include "BlockCryptor.h"
+#include <CommonCrypto/CommonCryptor.h>
+#include <CommonCrypto/CommonCryptorSPI.h>
+
+#define DES_KEY_SIZE_BITS_EXTERNAL		(kCCKeySizeDES * 8)
+#define DES_BLOCK_SIZE_BYTES			kCCBlockSizeDES
+
+/* DES Symmetric encryption context */
+class DESContext : public BlockCryptor {
+public:
+	DESContext(AppleCSPSession &session);
+	virtual ~DESContext();
+	
+	// called by CSPFullPluginSession
+	void init(const Context &context, bool encoding = true);
+
+	// called by BlockCryptor
+	void encryptBlock(
+		const void		*plainText,			// length implied (one block)
+		size_t			plainTextLen,
+		void			*cipherText,	
+		size_t			&cipherTextLen,		// in/out, throws on overflow
+		bool			final);
+	void decryptBlock(
+		const void		*cipherText,		// length implied (one cipher block)
+		size_t			cipherTextLen,
+		void			*plainText,	
+		size_t			&plainTextLen,		// in/out, throws on overflow
+		bool			final);
+	
+private:
+        CCCryptorRef	DesInst;	
+};	/* DESContext */
+
+/* Triple-DES (EDE, 24 byte key) Symmetric encryption context */
+
+#define DES3_KEY_SIZE_BYTES		(3 * (DES_KEY_SIZE_BITS_EXTERNAL / 8))
+#define DES3_BLOCK_SIZE_BYTES	kCCBlockSize3DES
+
+class DES3Context : public BlockCryptor {
+public:
+	DES3Context(AppleCSPSession &session);
+	~DES3Context();
+	
+	// called by CSPFullPluginSession
+	void init(const Context &context, bool encoding = true);
+
+	// called by BlockCryptor
+	void encryptBlock(
+		const void		*plainText,			// length implied (one block)
+		size_t			plainTextLen,
+		void			*cipherText,	
+		size_t			&cipherTextLen,		// in/out, throws on overflow
+		bool			final);
+	void decryptBlock(
+		const void		*cipherText,		// length implied (one cipher block)
+		size_t			cipherTextLen,
+		void			*plainText,	
+		size_t			&plainTextLen,		// in/out, throws on overflow
+		bool			final);
+	
+private:
+    CCCryptorRef	DesInst;		
+};	/* DES3Context */
+
+#endif //_DES_CONTEXT_H_