view libtomcrypt/src/ciphers/safer/safer_tab.c @ 1861:2b3a8026a6ce

Add re-exec for server This allows ASLR to re-randomize the address space for every connection, preventing some vulnerabilities from being exploitable by repeated probing. Overhead (memory and time) is yet to be confirmed. At present this is only enabled on Linux. Other BSD platforms with fexecve() would probably also work though have not been tested.
author Matt Johnston <matt@ucc.asn.au>
date Sun, 30 Jan 2022 10:14:56 +0800
parents 6dba84798cd5
children
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */

/**
  @file safer_tab.c
  Tables for LTC_SAFER block ciphers
*/

#ifdef __LTC_SAFER_TAB_C__

/* This is the box defined by ebox[x] = 45^x mod 257.
 * Its assumed that the value "256" corresponds to zero. */
static const unsigned char safer_ebox[256] = {
  1,  45, 226, 147, 190,  69,  21, 174, 120,   3, 135, 164, 184,  56, 207,  63,
  8, 103,   9, 148, 235,  38, 168, 107, 189,  24,  52,  27, 187, 191, 114, 247,
 64,  53,  72, 156,  81,  47,  59,  85, 227, 192, 159, 216, 211, 243, 141, 177,
255, 167,  62, 220, 134, 119, 215, 166,  17, 251, 244, 186, 146, 145, 100, 131,
241,  51, 239, 218,  44, 181, 178,  43, 136, 209, 153, 203, 140, 132,  29,  20,
129, 151, 113, 202,  95, 163, 139,  87,  60, 130, 196,  82,  92,  28, 232, 160,
  4, 180, 133,  74, 246,  19,  84, 182, 223,  12,  26, 142, 222, 224,  57, 252,
 32, 155,  36,  78, 169, 152, 158, 171, 242,  96, 208, 108, 234, 250, 199, 217,
  0, 212,  31, 110,  67, 188, 236,  83, 137, 254, 122,  93,  73, 201,  50, 194,
249, 154, 248, 109,  22, 219,  89, 150,  68, 233, 205, 230,  70,  66, 143,  10,
193, 204, 185, 101, 176, 210, 198, 172,  30,  65,  98,  41,  46,  14, 116,  80,
  2,  90, 195,  37, 123, 138,  42,  91, 240,   6,  13,  71, 111, 112, 157, 126,
 16, 206,  18,  39, 213,  76,  79, 214, 121,  48, 104,  54, 117, 125, 228, 237,
128, 106, 144,  55, 162,  94, 118, 170, 197, 127,  61, 175, 165, 229,  25,  97,
253,  77, 124, 183,  11, 238, 173,  75,  34, 245, 231, 115,  35,  33, 200,   5,
225, 102, 221, 179,  88, 105,  99,  86,  15, 161,  49, 149,  23,   7,  58,  40
};

/* This is the inverse of ebox or the base 45 logarithm */
static const unsigned char safer_lbox[256] = {
128,   0, 176,   9,  96, 239, 185, 253,  16,  18, 159, 228, 105, 186, 173, 248,
192,  56, 194, 101,  79,   6, 148, 252,  25, 222, 106,  27,  93,  78, 168, 130,
112, 237, 232, 236, 114, 179,  21, 195, 255, 171, 182,  71,  68,   1, 172,  37,
201, 250, 142,  65,  26,  33, 203, 211,  13, 110, 254,  38,  88, 218,  50,  15,
 32, 169, 157, 132, 152,   5, 156, 187,  34, 140,  99, 231, 197, 225, 115, 198,
175,  36,  91, 135, 102,  39, 247,  87, 244, 150, 177, 183,  92, 139, 213,  84,
121, 223, 170, 246,  62, 163, 241,  17, 202, 245, 209,  23, 123, 147, 131, 188,
189,  82,  30, 235, 174, 204, 214,  53,   8, 200, 138, 180, 226, 205, 191, 217,
208,  80,  89,  63,  77,  98,  52,  10,  72, 136, 181,  86,  76,  46, 107, 158,
210,  61,  60,   3,  19, 251, 151,  81, 117,  74, 145, 113,  35, 190, 118,  42,
 95, 249, 212,  85,  11, 220,  55,  49,  22, 116, 215, 119, 167, 230,   7, 219,
164,  47,  70, 243,  97,  69, 103, 227,  12, 162,  59,  28, 133,  24,   4,  29,
 41, 160, 143, 178,  90, 216, 166, 126, 238, 141,  83,  75, 161, 154, 193,  14,
122,  73, 165,  44, 129, 196, 199,  54,  43, 127,  67, 149,  51, 242, 108, 104,
109, 240,   2,  40, 206, 221, 155, 234,  94, 153, 124,  20, 134, 207, 229,  66,
184,  64, 120,  45,  58, 233, 100,  31, 146, 144, 125,  57, 111, 224, 137,  48
};

#endif /* __LTC_SAFER_TAB_C__ */



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