dropbear: src/ciphers/rc6.c annotate

annotate src/ciphers/rc6.c @ 212:a3e31d3983cb libtomcrypt

merge of 24ccd6df75086f1028c185f4ad5946f449bf2e05 and cc138b6aed8d554f52f041a11afecb95e95ed3b8

author	Matt Johnston <matt@ucc.asn.au>
date	Wed, 06 Jul 2005 13:24:05 +0000
parents	39d5d58461d6
children

rev	line source
191 1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2 *
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 * LibTomCrypt is a library that provides various cryptographic
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 * algorithms in a highly modular and flexible manner.
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 *
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 * The library is free for all purposes without any express
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 * guarantee it works.
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 *
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9 * Tom St Denis, [email protected], http://libtomcrypt.org
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 /**
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 @file rc6.c
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14 RC6 code by Tom St Denis
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 #include "tomcrypt.h"
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 #ifdef RC6
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 const struct ltc_cipher_descriptor rc6_desc =
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22 "rc6",
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 3,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24 8, 128, 16, 20,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 &rc6_setup,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 &rc6_ecb_encrypt,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 &rc6_ecb_decrypt,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 &rc6_test,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 &rc6_done,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 &rc6_keysize,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 NULL, NULL, NULL, NULL, NULL, NULL, NULL
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 };
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 static const ulong32 stab[44] = {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 0xb7e15163UL, 0x5618cb1cUL, 0xf45044d5UL, 0x9287be8eUL, 0x30bf3847UL, 0xcef6b200UL, 0x6d2e2bb9UL, 0x0b65a572UL,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36 0xa99d1f2bUL, 0x47d498e4UL, 0xe60c129dUL, 0x84438c56UL, 0x227b060fUL, 0xc0b27fc8UL, 0x5ee9f981UL, 0xfd21733aUL,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37 0x9b58ecf3UL, 0x399066acUL, 0xd7c7e065UL, 0x75ff5a1eUL, 0x1436d3d7UL, 0xb26e4d90UL, 0x50a5c749UL, 0xeedd4102UL,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	38 0x8d14babbUL, 0x2b4c3474UL, 0xc983ae2dUL, 0x67bb27e6UL, 0x05f2a19fUL, 0xa42a1b58UL, 0x42619511UL, 0xe0990ecaUL,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39 0x7ed08883UL, 0x1d08023cUL, 0xbb3f7bf5UL, 0x5976f5aeUL, 0xf7ae6f67UL, 0x95e5e920UL, 0x341d62d9UL, 0xd254dc92UL,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40 0x708c564bUL, 0x0ec3d004UL, 0xacfb49bdUL, 0x4b32c376UL };
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42 /**
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43 Initialize the RC6 block cipher
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 @param key The symmetric key you wish to pass
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 @param keylen The key length in bytes
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 @param num_rounds The number of rounds desired (0 for default)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 @param skey The key in as scheduled by this function.
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 @return CRYPT_OK if successful
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50 #ifdef LTC_CLEAN_STACK
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51 static int _rc6_setup(const unsigned char key, int keylen, int num_rounds, symmetric_key skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 #else
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	53 int rc6_setup(const unsigned char key, int keylen, int num_rounds, symmetric_key skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	54 #endif
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	55 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	56 ulong32 L[64], S[50], A, B, i, j, v, s, l;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	57
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	58 LTC_ARGCHK(key != NULL);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59 LTC_ARGCHK(skey != NULL);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	60
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	61 /* test parameters */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62 if (num_rounds != 0 && num_rounds != 20) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63 return CRYPT_INVALID_ROUNDS;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 /* key must be between 64 and 1024 bits */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	67 if (keylen < 8 \|\| keylen > 128) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68 return CRYPT_INVALID_KEYSIZE;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71 /* copy the key into the L array */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	72 for (A = i = j = 0; i < (ulong32)keylen; ) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	73 A = (A << 8) \| ((ulong32)(key[i++] & 255));
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74 if (!(i & 3)) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75 L[j++] = BSWAP(A);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76 A = 0;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	78 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	79
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	80 /* handle odd sized keys */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	81 if (keylen & 3) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	82 A <<= (8 * (4 - (keylen&3)));
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83 L[j++] = BSWAP(A);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 /* setup the S array */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 XMEMCPY(S, stab, 44 * sizeof(stab[0]));
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 /* mix buffer */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90 s = 3 * MAX(44, j);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 l = j;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92 for (A = B = i = j = v = 0; v < s; v++) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93 A = S[i] = ROLc(S[i] + A + B, 3);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94 B = L[j] = ROL(L[j] + A + B, (A+B));
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	95 if (++i == 44) { i = 0; }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96 if (++j == l) { j = 0; }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	98
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	99 /* copy to key */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 for (i = 0; i < 44; i++) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101 skey->rc6.K[i] = S[i];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	103 return CRYPT_OK;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	104 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	106 #ifdef LTC_CLEAN_STACK
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	107 int rc6_setup(const unsigned char key, int keylen, int num_rounds, symmetric_key skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	109 int x;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	110 x = _rc6_setup(key, keylen, num_rounds, skey);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	111 burn_stack(sizeof(ulong32) * 122);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	112 return x;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	113 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	114 #endif
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	115
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	116 /**
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	117 Encrypts a block of text with RC6
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	118 @param pt The input plaintext (16 bytes)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	119 @param ct The output ciphertext (16 bytes)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	120 @param skey The key as scheduled
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	121 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	122 #ifdef LTC_CLEAN_STACK
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	123 static void _rc6_ecb_encrypt(const unsigned char pt, unsigned char ct, symmetric_key *skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	124 #else
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	125 void rc6_ecb_encrypt(const unsigned char pt, unsigned char ct, symmetric_key *skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	126 #endif
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	127 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	128 ulong32 a,b,c,d,t,u, *K;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	129 int r;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	130
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	131 LTC_ARGCHK(skey != NULL);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	132 LTC_ARGCHK(pt != NULL);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	133 LTC_ARGCHK(ct != NULL);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	134 LOAD32L(a,&pt[0]);LOAD32L(b,&pt[4]);LOAD32L(c,&pt[8]);LOAD32L(d,&pt[12]);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	135
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	136 b += skey->rc6.K[0];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	137 d += skey->rc6.K[1];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	139 #define RND(a,b,c,d) \
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140 t = (b * (b + b + 1)); t = ROLc(t, 5); \
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 u = (d * (d + d + 1)); u = ROLc(u, 5); \
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 a = ROL(a^t,u) + K[0]; \
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143 c = ROL(c^u,t) + K[1]; K += 2;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145 K = skey->rc6.K + 2;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146 for (r = 0; r < 20; r += 4) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	147 RND(a,b,c,d);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 RND(b,c,d,a);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 RND(c,d,a,b);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150 RND(d,a,b,c);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 #undef RND
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	155 a += skey->rc6.K[42];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 c += skey->rc6.K[43];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157 STORE32L(a,&ct[0]);STORE32L(b,&ct[4]);STORE32L(c,&ct[8]);STORE32L(d,&ct[12]);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 #ifdef LTC_CLEAN_STACK
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	161 void rc6_ecb_encrypt(const unsigned char pt, unsigned char ct, symmetric_key *skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163 _rc6_ecb_encrypt(pt, ct, skey);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 burn_stack(sizeof(ulong32) * 6 + sizeof(int));
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166 #endif
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	167
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168 /**
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	169 Decrypts a block of text with RC6
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	170 @param ct The input ciphertext (16 bytes)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	171 @param pt The output plaintext (16 bytes)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	172 @param skey The key as scheduled
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	173 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	174 #ifdef LTC_CLEAN_STACK
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	175 static void _rc6_ecb_decrypt(const unsigned char ct, unsigned char pt, symmetric_key *skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	176 #else
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	177 void rc6_ecb_decrypt(const unsigned char ct, unsigned char pt, symmetric_key *skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178 #endif
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	179 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	180 ulong32 a,b,c,d,t,u, *K;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	181 int r;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 LTC_ARGCHK(skey != NULL);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	184 LTC_ARGCHK(pt != NULL);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	185 LTC_ARGCHK(ct != NULL);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	186
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	187 LOAD32L(a,&ct[0]);LOAD32L(b,&ct[4]);LOAD32L(c,&ct[8]);LOAD32L(d,&ct[12]);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	188 a -= skey->rc6.K[42];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	189 c -= skey->rc6.K[43];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	190
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	191 #define RND(a,b,c,d) \
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	192 t = (b * (b + b + 1)); t = ROLc(t, 5); \
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 u = (d * (d + d + 1)); u = ROLc(u, 5); \
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	194 c = ROR(c - K[1], t) ^ u; \
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195 a = ROR(a - K[0], u) ^ t; K -= 2;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	196
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197 K = skey->rc6.K + 40;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	198
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199 for (r = 0; r < 20; r += 4) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	200 RND(d,a,b,c);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201 RND(c,d,a,b);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202 RND(b,c,d,a);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	203 RND(a,b,c,d);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	204 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	205
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	206 #undef RND
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	207
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	208 b -= skey->rc6.K[0];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209 d -= skey->rc6.K[1];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	210 STORE32L(a,&pt[0]);STORE32L(b,&pt[4]);STORE32L(c,&pt[8]);STORE32L(d,&pt[12]);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	211 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	212
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213 #ifdef LTC_CLEAN_STACK
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 void rc6_ecb_decrypt(const unsigned char ct, unsigned char pt, symmetric_key *skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 _rc6_ecb_decrypt(ct, pt, skey);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217 burn_stack(sizeof(ulong32) * 6 + sizeof(int));
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	218 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	219 #endif
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	221 /**
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222 Performs a self-test of the RC6 block cipher
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 @return CRYPT_OK if functional, CRYPT_NOP if self-test has been disabled
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	224 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225 int rc6_test(void)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	227 #ifndef LTC_TEST
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228 return CRYPT_NOP;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	229 #else
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	230 static const struct {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231 int keylen;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	232 unsigned char key[32], pt[16], ct[16];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233 } tests[] = {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	234 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	235 16,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	236 { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237 0x01, 0x12, 0x23, 0x34, 0x45, 0x56, 0x67, 0x78,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 { 0x02, 0x13, 0x24, 0x35, 0x46, 0x57, 0x68, 0x79,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	241 0x8a, 0x9b, 0xac, 0xbd, 0xce, 0xdf, 0xe0, 0xf1 },
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 { 0x52, 0x4e, 0x19, 0x2f, 0x47, 0x15, 0xc6, 0x23,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 0x1f, 0x51, 0xf6, 0x36, 0x7e, 0xa4, 0x3f, 0x18 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244 },
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	246 24,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	247 { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 0x01, 0x12, 0x23, 0x34, 0x45, 0x56, 0x67, 0x78,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 0x89, 0x9a, 0xab, 0xbc, 0xcd, 0xde, 0xef, 0xf0,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 { 0x02, 0x13, 0x24, 0x35, 0x46, 0x57, 0x68, 0x79,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	252 0x8a, 0x9b, 0xac, 0xbd, 0xce, 0xdf, 0xe0, 0xf1 },
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	253 { 0x68, 0x83, 0x29, 0xd0, 0x19, 0xe5, 0x05, 0x04,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	254 0x1e, 0x52, 0xe9, 0x2a, 0xf9, 0x52, 0x91, 0xd4 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	255 },
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	256 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	257 32,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	258 { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259 0x01, 0x12, 0x23, 0x34, 0x45, 0x56, 0x67, 0x78,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	260 0x89, 0x9a, 0xab, 0xbc, 0xcd, 0xde, 0xef, 0xf0,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261 0x10, 0x32, 0x54, 0x76, 0x98, 0xba, 0xdc, 0xfe },
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	262 { 0x02, 0x13, 0x24, 0x35, 0x46, 0x57, 0x68, 0x79,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263 0x8a, 0x9b, 0xac, 0xbd, 0xce, 0xdf, 0xe0, 0xf1 },
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	264 { 0xc8, 0x24, 0x18, 0x16, 0xf0, 0xd7, 0xe4, 0x89,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265 0x20, 0xad, 0x16, 0xa1, 0x67, 0x4e, 0x5d, 0x48 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	266 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	267 };
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	268 unsigned char tmp[2][16];
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	269 int x, y, err;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270 symmetric_key key;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	271
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	272 for (x = 0; x < (int)(sizeof(tests) / sizeof(tests[0])); x++) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	273 /* setup key */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	274 if ((err = rc6_setup(tests[x].key, tests[x].keylen, 0, &key)) != CRYPT_OK) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	275 return err;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	276 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	277
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	278 /* encrypt and decrypt */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	279 rc6_ecb_encrypt(tests[x].pt, tmp[0], &key);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280 rc6_ecb_decrypt(tmp[0], tmp[1], &key);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	281
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282 /* compare */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	283 if (memcmp(tmp[0], tests[x].ct, 16) \|\| memcmp(tmp[1], tests[x].pt, 16)) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	284 #if 0
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285 printf("\n\nFailed test %d\n", x);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286 if (memcmp(tmp[0], tests[x].ct, 16)) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	287 printf("Ciphertext: ");
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	288 for (y = 0; y < 16; y++) printf("%02x ", tmp[0][y]);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289 printf("\nExpected : ");
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290 for (y = 0; y < 16; y++) printf("%02x ", tests[x].ct[y]);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	291 printf("\n");
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293 if (memcmp(tmp[1], tests[x].pt, 16)) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294 printf("Plaintext: ");
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	295 for (y = 0; y < 16; y++) printf("%02x ", tmp[0][y]);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	296 printf("\nExpected : ");
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	297 for (y = 0; y < 16; y++) printf("%02x ", tests[x].pt[y]);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	298 printf("\n");
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	299 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	300 #endif
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	301 return CRYPT_FAIL_TESTVECTOR;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	302 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	303
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	304 /* now see if we can encrypt all zero bytes 1000 times, decrypt and come back where we started */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	305 for (y = 0; y < 16; y++) tmp[0][y] = 0;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	306 for (y = 0; y < 1000; y++) rc6_ecb_encrypt(tmp[0], tmp[0], &key);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	307 for (y = 0; y < 1000; y++) rc6_ecb_decrypt(tmp[0], tmp[0], &key);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	308 for (y = 0; y < 16; y++) if (tmp[0][y] != 0) return CRYPT_FAIL_TESTVECTOR;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	309 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	310 return CRYPT_OK;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	311 #endif
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	313
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	314 /** Terminate the context
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	315 @param skey The scheduled key
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	316 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	317 void rc6_done(symmetric_key *skey)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	318 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	319 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	320
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	321 /**
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	322 Gets suitable key size
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	323 @param keysize [in/out] The length of the recommended key (in bytes). This function will store the suitable size back in this variable.
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	324 @return CRYPT_OK if the input key size is acceptable.
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	325 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	326 int rc6_keysize(int *keysize)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	327 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	328 LTC_ARGCHK(keysize != NULL);
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 if (*keysize < 8) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330 return CRYPT_INVALID_KEYSIZE;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331 } else if (*keysize > 128) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	332 *keysize = 128;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	333 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	334 return CRYPT_OK;
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	335 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	336
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	337 #endif /RC6/
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	338
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc Matt Johnston <matt@ucc.asn.au> parents: diff changeset	339
209 39d5d58461d6 Import of libtomcrypt 1.05 Matt Johnston <matt@ucc.asn.au> parents: 191 diff changeset	340
39d5d58461d6 Import of libtomcrypt 1.05 Matt Johnston <matt@ucc.asn.au> parents: 191 diff changeset	341 /* $Source: /cvs/libtom/libtomcrypt/src/ciphers/rc6.c,v $ */
39d5d58461d6 Import of libtomcrypt 1.05 Matt Johnston <matt@ucc.asn.au> parents: 191 diff changeset	342 /* $Revision: 1.7 $ */
39d5d58461d6 Import of libtomcrypt 1.05 Matt Johnston <matt@ucc.asn.au> parents: 191 diff changeset	343 /* $Date: 2005/05/05 14:35:58 $ */

Mercurial > dropbear

annotate src/ciphers/rc6.c @ 212:a3e31d3983cb libtomcrypt