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Annotation of truecrypt/common/gfmul.h, revision 1.1.1.2

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);
1.1.1.2 ! root       73: void MirrorBits128 (unsigned __int8 *a);
        !            74: void MirrorBits64 (unsigned __int8 *a);
1.1       root       75: BOOL GfMulSelfTest ();
                     76: 
                     77: #if defined(__cplusplus)
                     78: }
                     79: #endif
                     80: 
                     81: #endif

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