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Annotation of truecrypt/common/gfmul.h, revision 1.1

1.1     ! root        1: /*
        !             2:  ---------------------------------------------------------------------------
        !             3:  Copyright (c) 2003, Dr Brian Gladman, Worcester, UK.   All rights reserved.
        !             4: 
        !             5:  LICENSE TERMS
        !             6: 
        !             7:  The free distribution and use of this software in both source and binary
        !             8:  form is allowed (with or without changes) provided that:
        !             9: 
        !            10:    1. distributions of this source code include the above copyright
        !            11:       notice, this list of conditions and the following disclaimer;
        !            12: 
        !            13:    2. distributions in binary form include the above copyright
        !            14:       notice, this list of conditions and the following disclaimer
        !            15:       in the documentation and/or other associated materials;
        !            16: 
        !            17:    3. the copyright holder's name is not used to endorse products
        !            18:       built using this software without specific written permission.
        !            19: 
        !            20:  ALTERNATIVELY, provided that this notice is retained in full, this product
        !            21:  may be distributed under the terms of the GNU General Public License (GPL),
        !            22:  in which case the provisions of the GPL apply INSTEAD OF those given above.
        !            23: 
        !            24:  DISCLAIMER
        !            25: 
        !            26:  This software is provided 'as is' with no explicit or implied warranties
        !            27:  in respect of its properties, including, but not limited to, correctness
        !            28:  and/or fitness for purpose.
        !            29:  ---------------------------------------------------------------------------
        !            30:  Issue Date: 31/01/2004
        !            31: */
        !            32: 
        !            33: /* Adapted for TrueCrypt by the TrueCrypt Foundation */
        !            34: 
        !            35: #ifndef _GCM_H
        !            36: #define _GCM_H
        !            37: 
        !            38: #include "Tcdefs.h"
        !            39: 
        !            40: #if defined(__cplusplus)
        !            41: extern "C"
        !            42: {
        !            43: #endif
        !            44: 
        !            45: #define CBLK_LEN   16  /* encryption block length */
        !            46: #define CBLK_LEN8  8
        !            47: 
        !            48: typedef struct
        !            49: {
        !            50:     unsigned __int32 gf_t8k[CBLK_LEN * 2][16][CBLK_LEN / 4];
        !            51: } GfCtx8k;
        !            52: 
        !            53: typedef struct
        !            54: {
        !            55:                unsigned __int32 gf_t4k[CBLK_LEN8 * 2][16][CBLK_LEN / 4];
        !            56: } GfCtx4k64;
        !            57: 
        !            58: typedef struct
        !            59: {
        !            60:        /* union not used to support faster mounting */
        !            61:     unsigned __int32 gf_t128[CBLK_LEN * 2 / 2][16][CBLK_LEN / 4];
        !            62:     unsigned __int32 gf_t64[CBLK_LEN8 * 2][16][CBLK_LEN8 / 4];
        !            63: } GfCtx;
        !            64: 
        !            65: typedef int  ret_type;
        !            66: 
        !            67: void GfMul128 (void *a, const void* b);
        !            68: void GfMul128Tab(unsigned char a[16], GfCtx8k *ctx);
        !            69: int Gf128Tab64Init (unsigned __int8 *a, GfCtx *ctx);
        !            70: void Gf128MulBy64Tab (unsigned __int8 a[8], unsigned __int8 p[16], GfCtx *ctx);
        !            71: int Gf64TabInit (unsigned __int8 *a, GfCtx *ctx);
        !            72: void Gf64MulTab (unsigned char a[8], unsigned char p[8], GfCtx *ctx);
        !            73: BOOL GfMulSelfTest ();
        !            74: 
        !            75: #if defined(__cplusplus)
        !            76: }
        !            77: #endif
        !            78: 
        !            79: #endif

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