/* 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. *************************************************************************** * * DES.h - raw DES encryption engine interface * * Revision History * ---------------- * 31 Mar 97 Doug Mitchell at Apple * Put per-instance data in struct _desInst * 21 Aug 96 Doug Mitchell at NeXT * Broke out from NSDESCryptor.m * 22 Feb 96 Blaine Garst at NeXT * Created. */ #ifndef _CK_DES_H_ #define _CK_DES_H_ #ifdef __cplusplus extern "C" { #endif #define DES_BLOCK_SIZE_BYTES 8 /* in bytes */ #define DES_KEY_SIZE_BITS 56 /* effective key size in bits */ #define DES_KEY_SIZE_BITS_EXTERNAL 64 /* clients actually pass in this much */ #define DES_KEY_SIZE_BYTES_EXTERNAL (DES_KEY_SIZE_BITS_EXTERNAL / 8) #define DES_MODE_STD 0 /* standard Data Encryption Algorithm */ #define DES_MODE_FAST 1 /* DEA without initial and final */ /* permutations for speed */ #define DES_MODE_128 2 /* DEA without permutations and with */ /* 128-byte key (completely independent */ /* subkeys for each round) */ /* * Per-instance data. */ struct _desInst { /* 8 16-bit subkeys for each of 16 rounds, initialized by setkey() */ unsigned char kn[16][8]; int desmode; }; typedef struct _desInst *desInst; /* Warning: desinit() is NOT thread safe. Caller must single-thread. */ int desinit(desInst dinst, int mode); void dessetkey(desInst dinst, char *key); void endes(desInst dinst, char *block); void dedes(desInst dinst, char *block); void desdone(desInst dinst); #ifdef __cplusplus } #endif #endif /*_CK_DES_H_*/