feeTypes.h   [plain text]


/* Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
 *
 * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
 * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
 * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE COMPUTER, INC. AND THE
 * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE COMPUTER,
 * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
 * EXPOSE YOU TO LIABILITY.
 ***************************************************************************
 *
 * feeTypes.h - general purpose FEE typedefs and constants
 *
 * Revision History
 * ----------------
 *  23 Mar 98	Doug Mitchell at Apple
 *	Added FR_BadKeyBlob.
 *  20 Jan 98	Doug Mitchell at Apple
 * 	New PT_GENERAL depth values.
 *  09 Jan 98	Doug Mitchell at Apple
 *	Removed obsolete FEE_DEPTH_* values.
 *  20 Aug 96	Doug Mitchell at NeXT
 *	Created.
 */

#ifndef	_CK_FEETYPES_H_
#define _CK_FEETYPES_H_

/*
 * Opaque public key object.
 */
typedef void *feePubKey;

/*
 * Standard return codes.
 * Remember to update frtnStrings[] in utilities.c when adding new items.
 */
typedef enum {
	FR_Success = 0,
	FR_BadPubKey,
	FR_BadPubKeyString,
	FR_IncompatibleKey,		/* incompatible key */
	FR_IllegalDepth,
	FR_BadUsageName,		/* bad usageName */
	FR_BadSignatureFormat,	/* signature corrupted */
	FR_InvalidSignature,	/* signature intact, but not valid */
	FR_IllegalArg,			/* illegal argument */
	FR_BadCipherText,		/* malformed ciphertext */
	FR_Unimplemented,		/* unimplemented function */
	FR_BadCipherFile,
	FR_BadEnc64,			/* bad enc64() format */
	FR_WrongSignatureType,	/* ElGamal vs. ECDSA */
	FR_BadKeyBlob,
	FR_IllegalCurve,		/* e.g., ECDSA with Montgomery curve */
	FR_Internal,			/* internal library error */
	FR_Memory,				/* out of memory */
	FR_ShortPrivData		/* insufficient privData for creating
							 *   private key */
	/* etc. */
} feeReturn;

/*
 * The feeDepth parameter defines one of 'n' known curves. From a user's
 * perspective, the most interesting parameter indicated by feeDepth is
 * the size (in bits) of the key.
 */
typedef unsigned feeDepth;

/*
 * Prime and curve description parameters.
 */
typedef enum {
	FPT_Default,			/* default per key size */
	FPT_Mersenne,			/* (2 ** q) - 1 */
	FPT_FEE,				/* (2 ** q) - k */
	FPT_General				/* random prime */
} feePrimeType;

typedef enum {
	FCT_Default,			/* default per key size */
	FCT_Montgomery,			/* a==1, b==0 */
	FCT_Weierstrass,		/* c==0. IEEE P1363 compliant. */
	FCT_ANSI,				/* ANSI X9.62/Certicom, also FCT_Weierstrass */
	FCT_General				/* Other */
} feeCurveType;

/*
 * Some commonly used feeDepth values. In these definitions, q and k are
 * from the expression (2^q - k), the base modulus of the curve. The case
 * k=1 implies a Mersenne prime as the modulus.
 */
#define FEE_PROTOTYPE_CURVES	0

#if 	FEE_PROTOTYPE_CURVES

									/*   q      k     a     b     c  */
									/* ----   ----  ----  ----  ---- */
#define FEE_DEPTH_31_1_W		0   /*   31      1     7     1     0 */
#define FEE_DEPTH_31_1_M		1   /*   31      1     1     0   666 */
#define FEE_DEPTH_31_1_P		2   /*   31      1 5824692 2067311435 0 */
#define FEE_DEPTH_40_213		3   /*   40    213 1627500953 523907505 0 */
#define FEE_DEPTH_127_1			4   /*  127      1     1     0   666 */
#define FEE_DEPTH_127_1W		5   /*  127      1   666     1     0 */
#define FEE_DEPTH_160_57		6   /*  160     57     0     3     0 */
#define FEE_DEPTH_192_1425		7	/*  192   1425     0   -11     0 */
#define FEE_DEPTH_192_M529891	8   /*  192 -529891 -152   722     0 */

/*
 * The remaining curves are implemented as PT_GENERAL curves; modulo
 * arithmetic does not utilize any FEE or Mersenne optimizations. These
 * are here for performance measurements and DVT.
 */
#define FEE_DEPTH_127_GEN		9   /*  127      1     1     0   666 */
#define FEE_DEPTH_160_GEN      10   /*  160     57     0     3     0 */
#define FEE_DEPTH_161_GEN      11   /*  161     ..  -152   722     0 */

/*
 * The default depth.
 */
#define FEE_DEPTH_DEFAULT	FEE_DEPTH_160_57

/*
 * Last enumerated depth.
 */
#define FEE_DEPTH_MAX		FEE_DEPTH_161_GEN

#else	/* FEE_PROTOTYPE_CURVES */

/*
 * The real curves as of 4/9/2001.
 * Note that ECDSA signatures can only be performed with curve of 
 * curveType FCT_Weierstrass.
 *
 * Default curveType for curves with same prime size is FCT_Weierstrass.
 */
#define FEE_DEPTH_31M		0		/* size=31  FPT_Mersenne FCT_Montgomery */
#define FEE_DEPTH_31W		1		/* size=31  FPT_Mersenne FCT_Weierstrass */
#define FEE_DEPTH_127M		2		/* size=127 FPT_Mersenne FCT_Montgomery */
#define FEE_DEPTH_128W		3		/* size=128 FPT_FEE FCT_Weierstrass */
#define FEE_DEPTH_161W		4		/* size=161 FPT_FEE      FCT_Weierstrass */
#define FEE_DEPTH_161G		5		/* size=161 FPT_General  FCT_Weierstrass */
#define FEE_DEPTH_192G		6		/* size=192 FPT_General  FCT_Weierstrass */

/* ANSI X9.62/Certicom curves */
#define FEE_DEPTH_secp192r1	7		/* size=192 FPT_General  FCT_ANSI */
#define FEE_DEPTH_secp256r1	8		/* size=256 FPT_General  FCT_ANSI */
#define FEE_DEPTH_secp384r1	9		/* size=384 FPT_General  FCT_ANSI */
#define FEE_DEPTH_secp521r1	10		/* size=521 FPT_General  FCT_ANSI */
/*
 * The default depth.
 */
#define FEE_DEPTH_DEFAULT	FEE_DEPTH_161W

/*
 * Last enumerated depth.
 */
#define FEE_DEPTH_MAX		FEE_DEPTH_secp521r1

#endif	/* FEE_PROTOTYPE_CURVES */

/*
 * Random number generator callback function.
 */
typedef feeReturn (*feeRandFcn)(
	void *ref,
	unsigned char *bytes,		/* must be alloc'd by caller */
	unsigned numBytes);
	
#endif	/* _CK_FEETYPES_H_ */