desimpl.c

IBE是一种非对称密码技术

/* Copyright 2003-2006, Voltage Security, all rights reserved.
 */
#include "vibecrypto.h"
#include "environment.h"
#include "base.h"
#include "libctx.h"
#include "algobj.h"
#include "cipher.h"
#include "block.h"
#include "des.h"
#include "errorctx.h"

/* platform-independant 32-bit integer manipulation macros */
// Note that this is the reverse of the macro used in the AES file,
// in order to preserve behavior on the PC client (uses little-endian
// by default).

#define GET_UINT32(n,b,i)                       \
{                                               \
    (n) = ( (UInt32) (b)[(i) + 3] << 24 )       \
        | ( (UInt32) (b)[(i) + 2] << 16 )       \
        | ( (UInt32) (b)[(i) + 1] <<  8 )       \
        | ( (UInt32) (b)[(i)    ]       );      \
}

#define PUT_UINT32(n,b,i)                       \
{                                               \
    (b)[(i) + 3] = (unsigned char) ( (n) >> 24 );       \
    (b)[(i) + 2] = (unsigned char) ( (n) >> 16 );       \
    (b)[(i) + 1] = (unsigned char) ( (n) >>  8 );       \
    (b)[(i)    ] = (unsigned char) ( (n)       );       \
}

static const UInt32 des_skb[8][64] =
{
  {
    /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
    0x00000000L,0x00000010L,0x20000000L,0x20000010L,
    0x00010000L,0x00010010L,0x20010000L,0x20010010L,
    0x00000800L,0x00000810L,0x20000800L,0x20000810L,
    0x00010800L,0x00010810L,0x20010800L,0x20010810L,
    0x00000020L,0x00000030L,0x20000020L,0x20000030L,
    0x00010020L,0x00010030L,0x20010020L,0x20010030L,
    0x00000820L,0x00000830L,0x20000820L,0x20000830L,
    0x00010820L,0x00010830L,0x20010820L,0x20010830L,
    0x00080000L,0x00080010L,0x20080000L,0x20080010L,
    0x00090000L,0x00090010L,0x20090000L,0x20090010L,
    0x00080800L,0x00080810L,0x20080800L,0x20080810L,
    0x00090800L,0x00090810L,0x20090800L,0x20090810L,
    0x00080020L,0x00080030L,0x20080020L,0x20080030L,
    0x00090020L,0x00090030L,0x20090020L,0x20090030L,
    0x00080820L,0x00080830L,0x20080820L,0x20080830L,
    0x00090820L,0x00090830L,0x20090820L,0x20090830L,
  },
  {
    /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
    0x00000000L,0x02000000L,0x00002000L,0x02002000L,
    0x00200000L,0x02200000L,0x00202000L,0x02202000L,
    0x00000004L,0x02000004L,0x00002004L,0x02002004L,
    0x00200004L,0x02200004L,0x00202004L,0x02202004L,
    0x00000400L,0x02000400L,0x00002400L,0x02002400L,
    0x00200400L,0x02200400L,0x00202400L,0x02202400L,
    0x00000404L,0x02000404L,0x00002404L,0x02002404L,
    0x00200404L,0x02200404L,0x00202404L,0x02202404L,
    0x10000000L,0x12000000L,0x10002000L,0x12002000L,
    0x10200000L,0x12200000L,0x10202000L,0x12202000L,
    0x10000004L,0x12000004L,0x10002004L,0x12002004L,
    0x10200004L,0x12200004L,0x10202004L,0x12202004L,
    0x10000400L,0x12000400L,0x10002400L,0x12002400L,
    0x10200400L,0x12200400L,0x10202400L,0x12202400L,
    0x10000404L,0x12000404L,0x10002404L,0x12002404L,
    0x10200404L,0x12200404L,0x10202404L,0x12202404L,
  },
  {
    /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
    0x00000000L,0x00000001L,0x00040000L,0x00040001L,
    0x01000000L,0x01000001L,0x01040000L,0x01040001L,
    0x00000002L,0x00000003L,0x00040002L,0x00040003L,
    0x01000002L,0x01000003L,0x01040002L,0x01040003L,
    0x00000200L,0x00000201L,0x00040200L,0x00040201L,
    0x01000200L,0x01000201L,0x01040200L,0x01040201L,
    0x00000202L,0x00000203L,0x00040202L,0x00040203L,
    0x01000202L,0x01000203L,0x01040202L,0x01040203L,
    0x08000000L,0x08000001L,0x08040000L,0x08040001L,
    0x09000000L,0x09000001L,0x09040000L,0x09040001L,
    0x08000002L,0x08000003L,0x08040002L,0x08040003L,
    0x09000002L,0x09000003L,0x09040002L,0x09040003L,
    0x08000200L,0x08000201L,0x08040200L,0x08040201L,
    0x09000200L,0x09000201L,0x09040200L,0x09040201L,
    0x08000202L,0x08000203L,0x08040202L,0x08040203L,
    0x09000202L,0x09000203L,0x09040202L,0x09040203L,
  },
  {
    /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
    0x00000000L,0x00100000L,0x00000100L,0x00100100L,
    0x00000008L,0x00100008L,0x00000108L,0x00100108L,
    0x00001000L,0x00101000L,0x00001100L,0x00101100L,
    0x00001008L,0x00101008L,0x00001108L,0x00101108L,
    0x04000000L,0x04100000L,0x04000100L,0x04100100L,
    0x04000008L,0x04100008L,0x04000108L,0x04100108L,
    0x04001000L,0x04101000L,0x04001100L,0x04101100L,
    0x04001008L,0x04101008L,0x04001108L,0x04101108L,
    0x00020000L,0x00120000L,0x00020100L,0x00120100L,
    0x00020008L,0x00120008L,0x00020108L,0x00120108L,
    0x00021000L,0x00121000L,0x00021100L,0x00121100L,
    0x00021008L,0x00121008L,0x00021108L,0x00121108L,
    0x04020000L,0x04120000L,0x04020100L,0x04120100L,
    0x04020008L,0x04120008L,0x04020108L,0x04120108L,
    0x04021000L,0x04121000L,0x04021100L,0x04121100L,
    0x04021008L,0x04121008L,0x04021108L,0x04121108L,
  },
  {
    /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
    0x00000000L,0x10000000L,0x00010000L,0x10010000L,
    0x00000004L,0x10000004L,0x00010004L,0x10010004L,
    0x20000000L,0x30000000L,0x20010000L,0x30010000L,
    0x20000004L,0x30000004L,0x20010004L,0x30010004L,
    0x00100000L,0x10100000L,0x00110000L,0x10110000L,
    0x00100004L,0x10100004L,0x00110004L,0x10110004L,
    0x20100000L,0x30100000L,0x20110000L,0x30110000L,
    0x20100004L,0x30100004L,0x20110004L,0x30110004L,
    0x00001000L,0x10001000L,0x00011000L,0x10011000L,
    0x00001004L,0x10001004L,0x00011004L,0x10011004L,
    0x20001000L,0x30001000L,0x20011000L,0x30011000L,
    0x20001004L,0x30001004L,0x20011004L,0x30011004L,
    0x00101000L,0x10101000L,0x00111000L,0x10111000L,
    0x00101004L,0x10101004L,0x00111004L,0x10111004L,
    0x20101000L,0x30101000L,0x20111000L,0x30111000L,
    0x20101004L,0x30101004L,0x20111004L,0x30111004L,
  },
  {
    /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
    0x00000000L,0x08000000L,0x00000008L,0x08000008L,
    0x00000400L,0x08000400L,0x00000408L,0x08000408L,
    0x00020000L,0x08020000L,0x00020008L,0x08020008L,
    0x00020400L,0x08020400L,0x00020408L,0x08020408L,
    0x00000001L,0x08000001L,0x00000009L,0x08000009L,
    0x00000401L,0x08000401L,0x00000409L,0x08000409L,
    0x00020001L,0x08020001L,0x00020009L,0x08020009L,
    0x00020401L,0x08020401L,0x00020409L,0x08020409L,
    0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
    0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
    0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
    0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
    0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
    0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
    0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
    0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
  },
  {
    /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
    0x00000000L,0x00000100L,0x00080000L,0x00080100L,
    0x01000000L,0x01000100L,0x01080000L,0x01080100L,
    0x00000010L,0x00000110L,0x00080010L,0x00080110L,
    0x01000010L,0x01000110L,0x01080010L,0x01080110L,
    0x00200000L,0x00200100L,0x00280000L,0x00280100L,
    0x01200000L,0x01200100L,0x01280000L,0x01280100L,
    0x00200010L,0x00200110L,0x00280010L,0x00280110L,
    0x01200010L,0x01200110L,0x01280010L,0x01280110L,
    0x00000200L,0x00000300L,0x00080200L,0x00080300L,
    0x01000200L,0x01000300L,0x01080200L,0x01080300L,
    0x00000210L,0x00000310L,0x00080210L,0x00080310L,
    0x01000210L,0x01000310L,0x01080210L,0x01080310L,
    0x00200200L,0x00200300L,0x00280200L,0x00280300L,
    0x01200200L,0x01200300L,0x01280200L,0x01280300L,
    0x00200210L,0x00200310L,0x00280210L,0x00280310L,
    0x01200210L,0x01200310L,0x01280210L,0x01280310L,
  },
  {
    /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
    0x00000000L,0x04000000L,0x00040000L,0x04040000L,
    0x00000002L,0x04000002L,0x00040002L,0x04040002L,
    0x00002000L,0x04002000L,0x00042000L,0x04042000L,
    0x00002002L,0x04002002L,0x00042002L,0x04042002L,
    0x00000020L,0x04000020L,0x00040020L,0x04040020L,
    0x00000022L,0x04000022L,0x00040022L,0x04040022L,
    0x00002020L,0x04002020L,0x00042020L,0x04042020L,
    0x00002022L,0x04002022L,0x00042022L,0x04042022L,
    0x00000800L,0x04000800L,0x00040800L,0x04040800L,
    0x00000802L,0x04000802L,0x00040802L,0x04040802L,
    0x00002800L,0x04002800L,0x00042800L,0x04042800L,
    0x00002802L,0x04002802L,0x00042802L,0x04042802L,
    0x00000820L,0x04000820L,0x00040820L,0x04040820L,
    0x00000822L,0x04000822L,0x00040822L,0x04040822L,
    0x00002820L,0x04002820L,0x00042820L,0x04042820L,
    0x00002822L,0x04002822L,0x00042822L,0x04042822L,
  }
};

UInt32 V_DES_SPtrans[8][64] =
{
  {
    /* nibble 0 */
    0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L,
    0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L,
    0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L,
    0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L,
    0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L,
    0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L,
    0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L,
    0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L,
    0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L,
    0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L,
    0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L,
    0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L,
    0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L,
    0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L,
    0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L,
    0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L,
  },
  {
    /* nibble 1 */
    0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L,
    0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L,
    0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L,
    0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L,
    0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L,
    0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L,
    0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L,
    0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L,
    0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L,
    0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L,
    0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L,
    0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L,
    0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L,
    0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L,
    0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L,
    0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L,
  },
  {
    /* nibble 2 */
    0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L,
    0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L,
    0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L,
    0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L,
    0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L,
    0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L,
    0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L,
    0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L,
    0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L,
    0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L,
    0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L,
    0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L,
    0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L,
    0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L,
    0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L,
    0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L,
  },
  {
    /* nibble 3 */
    0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L,
    0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L,
    0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L,
    0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L,
    0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L,
    0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L,
    0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L,
    0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L,
    0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L,
    0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L,
    0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L,
    0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L,
    0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L,
    0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L,
    0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L,
    0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L,
  },
  {
    /* nibble 4 */
    0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L,
    0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L,
    0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L,
    0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L,
    0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L,
    0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L,
    0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L,
    0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L,
    0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L,
    0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L,
    0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L,
    0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L,
    0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L,
    0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L,
    0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L,
    0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L,
  },
  {
    /* nibble 5 */
    0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L,
    0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L,
    0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L,
    0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L,
    0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L,
    0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L,
    0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L,
    0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L,
    0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L,
    0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L,
    0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L,
    0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L,
    0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L,
    0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L,
    0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L,
    0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L,
  },
  {
    /* nibble 6 */
    0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L,
    0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L,
    0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L,
    0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L,
    0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L,
    0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L,
    0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L,
    0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L,
    0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L,
    0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L,
    0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L,
    0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L,
    0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L,
    0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L,
    0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L,
    0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L,
  },
  {
    /* nibble 7 */
    0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L,
    0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L,
    0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L,
    0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L,
    0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L,
    0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L,
    0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L,
    0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L,
    0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L,
    0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L,
    0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L,
    0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L,
    0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L,