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

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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.
+ */
+
+
+/*
+ * FEESignatureObject.h - FEE-based raw sign/verify classes
+ */
+
+#ifdef	CRYPTKIT_CSP_ENABLE
+
+#ifndef	_FEE_SIGNATURE_OBJECT_H_
+#define _FEE_SIGNATURE_OBJECT_H_
+
+#include <security_cryptkit/feePublicKey.h>
+#include <security_cryptkit/feeECDSA.h>
+#include "FEECSPUtils.h"
+#include "CryptKitSpace.h"
+#include <RawSigner.h>
+#include <AppleCSPSession.h>
+
+namespace CryptKit {
+
+/* 
+ * Common raw FEE sign/verify class.
+ */
+class FEESigner : public RawSigner {
+public:
+	FEESigner(
+		feeRandFcn		randFcn,
+		void			*randRef,
+		AppleCSPSession &session,
+		Allocator	&alloc) : 
+			RawSigner(alloc, CSSM_ALGID_NONE),
+			mFeeKey(NULL),
+			mWeMallocdFeeKey(false),
+			mRandFcn(randFcn),
+			mRandRef(randRef),
+			mSession(session) { }
+			
+	virtual ~FEESigner();
+	
+	/* reusable init */
+	void signerInit(
+		const Context 	&context,
+		bool			isSigning);
+	
+	/* 
+	 * obtain key from context, validate, convert to native FEE key
+	 */
+	void keyFromContext(
+		const Context 	&context);
+
+protected:
+		feePubKey		mFeeKey;
+		bool			mWeMallocdFeeKey;
+		feeRandFcn		mRandFcn;
+		void			*mRandRef;
+		AppleCSPSession	&mSession;
+};
+
+/* 
+ * And two implementations.
+ *
+ * Native FEE signature, ElGamal style.
+ */
+class FEERawSigner : public FEESigner
+{
+public:
+	FEERawSigner(
+		feeRandFcn		randFcn,
+		void			*randRef,
+		AppleCSPSession &session,
+		Allocator	&alloc) : 
+			FEESigner(randFcn, randRef, session, alloc) { };
+			
+	~FEERawSigner() { }
+	
+	/* sign */
+	void sign(
+		const void	 	*data, 
+		size_t 			dataLen,
+		void			*sig,	
+		size_t			*sigLen);	/* IN/OUT */
+		
+	/* verify */
+	void verify(
+		const void 		*data, 
+		size_t 			dataLen,
+		const void		*sig,			
+		size_t			sigLen);	
+		
+	/* works for both, but only used for signing */
+	size_t maxSigSize();
+};
+
+/*
+ * FEE signature, ECDSA style.
+ */
+class FEEECDSASigner : public FEESigner
+{
+public:
+	FEEECDSASigner(
+		feeRandFcn		randFcn,
+		void			*randRef,
+		AppleCSPSession &session,
+		Allocator	&alloc) : 
+			FEESigner(randFcn, randRef, session, alloc) { };
+			
+	~FEEECDSASigner() { }
+	
+	/* sign */
+	void sign(
+		const void	 	*data, 
+		size_t 			dataLen,
+		void			*sig,	
+		size_t			*sigLen);	/* IN/OUT */
+		
+	/* verify */
+	void verify(
+		const void	 	*data, 
+		size_t 			dataLen,
+		const void		*sig,			
+		size_t			sigLen);	
+		
+	/* works for both, but only used for signing */
+	size_t maxSigSize();
+};
+
+} /* namespace CryptKit */
+
+#endif	/* _FEE_SIGNATURE_OBJECT_H_ */
+#endif	/* CRYPTKIT_CSP_ENABLE */