X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/72a12576750f52947eb043106ba5c12c0d07decf..b1ab9ed8d0e0f1c3b66d7daa8fd5564444c56195:/libsecurity_apple_csp/lib/RawSigner.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.
+ */
+
+
+/*
+ * RawSigner.h - low-level virtual sign/verify object (no digest)
+ */
+ 
+#ifndef	_RAW_SIGNER_H_
+#define _RAW_SIGNER_H_
+
+#include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacTypes.h>
+#include <security_cdsa_utilities/context.h>
+#include <security_utilities/alloc.h>
+
+class RawSigner {
+public:
+	RawSigner(
+		Allocator	&alloc,
+		CSSM_ALGORITHMS	digestAlg)	:
+			mInitFlag(false), 
+			mIsSigning(false),
+			mDigestAlg(digestAlg),
+			mAlloc(alloc) { }
+	virtual ~RawSigner()  	{ }
+	
+	/* 
+	 * The use of our mDigestAlg variable is pretty crufty. For some algs, it's 
+	 * known and specified at construction time (e.g., CSSM_ALGID_MD5WithRSA). 
+	 * For some algs, it's set by CSPFullPluginSession via 
+	 * CSPContext::setDigestAlgorithm during raw sign/verify.
+	 */
+	void 			setDigestAlg(CSSM_ALGORITHMS alg)
+											{ mDigestAlg = alg; }
+
+	/* 
+	 * The remaining functions must be implemented by subclass. 
+	 */
+
+	/* reusable init */
+	virtual void signerInit(
+		const Context 	&context,
+		bool			isSigning) = 0;
+	
+	/* sign */
+	virtual void sign(
+		const void 		*data, 
+		size_t 			dataLen,
+		void			*sig,	
+		size_t			*sigLen) = 0;	/* IN/OUT */
+		
+	/* verify */
+	virtual void verify(
+		const void 		*data, 
+		size_t 			dataLen,
+		const void		*sig,			
+		size_t			sigLen) = 0;	
+		
+	/* works for both, but only used for signing */
+	virtual size_t maxSigSize() = 0;
+
+protected:
+	bool			mInitFlag;				// true after init
+	bool			mOpStarted;				// true after update
+	bool			mIsSigning;
+	CSSM_ALGORITHMS	mDigestAlg;				// for raw sign/verify
+	Allocator	&mAlloc;
+	
+	bool			initFlag() 				{ return mInitFlag; }
+	void			setInitFlag(bool flag) 	{ mInitFlag = flag; }
+	bool			opStarted() 			{ return mOpStarted; }
+	void			setOpStarted(bool flag) { mOpStarted = flag; }
+	bool			isSigning()				{ return mIsSigning; }
+	void			setIsSigning(bool signing)
+											{ mIsSigning = signing; }
+	CSSM_ALGORITHMS	digestAlg()				{ return mDigestAlg; }
+	Allocator	&alloc()				{ return mAlloc; }
+};
+
+
+#endif	/* _RAW_SIGNER_H_ */