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

diff --git a/libsecurity_apple_csp/lib/AppleCSPContext.h b/libsecurity_apple_csp/lib/AppleCSPContext.h
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--- a/libsecurity_apple_csp/lib/AppleCSPContext.h
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-/*
- * Copyright (c) 2000-2001 Apple Computer, 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.
- */
-
-
-//
-// AppleCSPContext.h - CSP-wide contexts 
-//
-#ifndef _H_APPLE_CSP_CONTEXT
-#define _H_APPLE_CSP_CONTEXT
-
-#include <security_cdsa_plugin/CSPsession.h>
-#include "BinaryKey.h"
-
-//
-// Parent class for all CSPContexts implemented in this CSP.
-// Currently the only thing we add is a reference to our
-// creator's session.
-//
-class AppleCSPSession;
-
-class AppleCSPContext : public CSPFullPluginSession::CSPContext
-{
-public:
-	AppleCSPContext(AppleCSPSession &session)
-		: mSession(session) {}
-    
-    ~AppleCSPContext();
-	
-	/* 
-	 * get symmetric key bits - context.key can be either ref or raw.
-	 * A convenience routine typically used by symmetric contexts' 
-	 * init() routines. 
-	 */
-	static void symmetricKeyBits(
-		const Context 	&context,
-		AppleCSPSession &session,
-		CSSM_ALGORITHMS	requiredAlg,	// throws if this doesn't match key alg
-		CSSM_KEYUSE 	intendedUse,	// throws if key usage doesn't match this
-		uint8			*&keyBits,		// RETURNED (not mallocd or copied)
-		CSSM_SIZE		&keyLen);		// RETURNED
-		
-protected:	
-	AppleCSPSession	&session() { return mSession; }
-
-private:
-	AppleCSPSession	&mSession;
-};
-
-//
-// Context for CSSM_ALGID_APPLE_YARROW.
-//
-class YarrowContext : public AppleCSPContext
-{
-public:
-	YarrowContext(AppleCSPSession &session);
-	virtual ~YarrowContext();
-	virtual void init(const Context &context, bool encoding = true);
-	void final(CssmData &out);
-	size_t outputSize(bool final, size_t inSize) { return outSize; }
-
-private:
-	uint32	outSize;
-};
-
-//
-// Classes which inherit from AppleCSPContext and which also perform
-// key pair generation inherit from this class as well.
-//
-class AppleKeyPairGenContext  {
-public:
-	virtual ~AppleKeyPairGenContext();
-	
-	//
-	// Subclass implements generate(const Context &, CssmKey &,
-	// CssmKey &). That method (called from CSPFullPluginSession)
-	// allocates two subclass-specific BinaryKeys and calls this
-	// method. This will eventually call down to generate(const Context &,
-	// BinaryKey &, BinaryKey &) and optionally to 
-	// BinaryKey::generateKeyBlob.
-	//
-	void generate(
-		const Context 	&context, 
-		AppleCSPSession	&session,		// for ref keys
-		CssmKey 		&pubKey, 
-		BinaryKey 		*pubBinKey,
-		CssmKey 		&privKey,
-		BinaryKey		*privBinKey);
-
-protected:
-	// Subclasses must implement this. It cooks up a key pair.
-	virtual void generate(
-		const Context 	&context,
-		BinaryKey		&pubBinKey,		// valid on successful return
-		BinaryKey		&privBinKey, 	// ditto
-		uint32 			&keySize) = 0;	// ditto
-};
-
-//
-// Classes which inherit from AppleCSPContext and which also perform
-// symmetric key generation inherit from this class as well.
-//
-class AppleSymmKeyGenContext  {
-public:
-	//
-	// Subclass implements generate(const Context &, CssmKey &, 
-	// CssmKey &). Note that the second CssmKey is a dummy 
-	// argument. That method merely calls generateSymKey, allowing us 
-	// to get to the associated AppleCSPSession if we need to 
-	// store reference keys. We take care of all attribute and 
-	// usage validation and of header formatting. Parameters for
-	// validation typlically specified in constructor via an
-	// algorithm factory. 
-	//
-	AppleSymmKeyGenContext(
-		uint32			minSize,	// in bits
-		uint32			maxSize,	// ditto
-		bool			byteSized)	// true --> key size must
-									//   be multiple of 8 bits
-		:	minSizeInBits(minSize),
-			maxSizeInBits(maxSize),
-			mustBeByteSized(byteSized)  {}
-			
-	void generateSymKey(
-		const Context 	&context, 
-		AppleCSPSession	&session,		// for ref keys
-		CssmKey 		&cssmKey);		// RETURNED 
-
-private:
-	uint32			minSizeInBits;
-	uint32			maxSizeInBits;
-	bool			mustBeByteSized;
-
-};
-
-/*
- * Generic symmetric key generation context, for algorithms whose
- * requirements can be expressed in min/max key size and 
- * mustBeByteSized. Such algorithms just need create one of these
- * from an algorithm factory.
- */
-class AppleSymmKeyGenerator : public AppleCSPContext, private AppleSymmKeyGenContext {
-public:
-	AppleSymmKeyGenerator(
-		AppleCSPSession &session,
-		uint32			minSize,		// in bits
-		uint32			maxSize,		// ditto
-		bool			byteSized) :	// true --> key size must
-										//   be multiple of 8 bits
-			AppleCSPContext(session),
-			AppleSymmKeyGenContext(minSize, maxSize, byteSized) { }
-	
-	void init(const Context &context, bool encoding = true) { }
-			
-	/* this just passes the request up to AppleSymmKeyGenContext */
-	void generate(
-		const Context 	&context, 
-		CssmKey 		&symKey, 
-		CssmKey 		&dummyKey) {
-			AppleSymmKeyGenContext::generateSymKey(
-					context, 
-					session(),
-					symKey);
-		}
-
-};
-
-#endif	/* _H_APPLE_CSP_CONTEXT */