X-Git-Url: https://pd.if.org/git/?p=zpackage;a=blobdiff_plain;f=libtomcrypt%2Fsrc%2Fciphers%2Fkasumi.c;fp=libtomcrypt%2Fsrc%2Fciphers%2Fkasumi.c;h=0000000000000000000000000000000000000000;hp=7c2add5247814efa05f40b9fd536d8a9494384c1;hb=094fa8c1bc2e27a560833c6a829b1d9b60de7034;hpb=27410df6ded2d78850397c159cbccff1a78012f2 diff --git a/libtomcrypt/src/ciphers/kasumi.c b/libtomcrypt/src/ciphers/kasumi.c deleted file mode 100644 index 7c2add5..0000000 --- a/libtomcrypt/src/ciphers/kasumi.c +++ /dev/null @@ -1,318 +0,0 @@ -/* 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 kasumi.c - Implementation of the 3GPP Kasumi block cipher - Derived from the 3GPP standard source code -*/ - -#include "tomcrypt.h" - -#ifdef LTC_KASUMI - -typedef unsigned u16; - -#define ROL16(x, y) ((((x)<<(y)) | ((x)>>(16-(y)))) & 0xFFFF) - -const struct ltc_cipher_descriptor kasumi_desc = { - "kasumi", - 21, - 16, 16, 8, 8, - &kasumi_setup, - &kasumi_ecb_encrypt, - &kasumi_ecb_decrypt, - &kasumi_test, - &kasumi_done, - &kasumi_keysize, - NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL -}; - -static u16 FI( u16 in, u16 subkey ) -{ - u16 nine, seven; - static const u16 S7[128] = { - 54, 50, 62, 56, 22, 34, 94, 96, 38, 6, 63, 93, 2, 18,123, 33, - 55,113, 39,114, 21, 67, 65, 12, 47, 73, 46, 27, 25,111,124, 81, - 53, 9,121, 79, 52, 60, 58, 48,101,127, 40,120,104, 70, 71, 43, - 20,122, 72, 61, 23,109, 13,100, 77, 1, 16, 7, 82, 10,105, 98, - 117,116, 76, 11, 89,106, 0,125,118, 99, 86, 69, 30, 57,126, 87, - 112, 51, 17, 5, 95, 14, 90, 84, 91, 8, 35,103, 32, 97, 28, 66, - 102, 31, 26, 45, 75, 4, 85, 92, 37, 74, 80, 49, 68, 29,115, 44, - 64,107,108, 24,110, 83, 36, 78, 42, 19, 15, 41, 88,119, 59, 3 }; - static const u16 S9[512] = { - 167,239,161,379,391,334, 9,338, 38,226, 48,358,452,385, 90,397, - 183,253,147,331,415,340, 51,362,306,500,262, 82,216,159,356,177, - 175,241,489, 37,206, 17, 0,333, 44,254,378, 58,143,220, 81,400, - 95, 3,315,245, 54,235,218,405,472,264,172,494,371,290,399, 76, - 165,197,395,121,257,480,423,212,240, 28,462,176,406,507,288,223, - 501,407,249,265, 89,186,221,428,164, 74,440,196,458,421,350,163, - 232,158,134,354, 13,250,491,142,191, 69,193,425,152,227,366,135, - 344,300,276,242,437,320,113,278, 11,243, 87,317, 36, 93,496, 27, - 487,446,482, 41, 68,156,457,131,326,403,339, 20, 39,115,442,124, - 475,384,508, 53,112,170,479,151,126,169, 73,268,279,321,168,364, - 363,292, 46,499,393,327,324, 24,456,267,157,460,488,426,309,229, - 439,506,208,271,349,401,434,236, 16,209,359, 52, 56,120,199,277, - 465,416,252,287,246, 6, 83,305,420,345,153,502, 65, 61,244,282, - 173,222,418, 67,386,368,261,101,476,291,195,430, 49, 79,166,330, - 280,383,373,128,382,408,155,495,367,388,274,107,459,417, 62,454, - 132,225,203,316,234, 14,301, 91,503,286,424,211,347,307,140,374, - 35,103,125,427, 19,214,453,146,498,314,444,230,256,329,198,285, - 50,116, 78,410, 10,205,510,171,231, 45,139,467, 29, 86,505, 32, - 72, 26,342,150,313,490,431,238,411,325,149,473, 40,119,174,355, - 185,233,389, 71,448,273,372, 55,110,178,322, 12,469,392,369,190, - 1,109,375,137,181, 88, 75,308,260,484, 98,272,370,275,412,111, - 336,318, 4,504,492,259,304, 77,337,435, 21,357,303,332,483, 18, - 47, 85, 25,497,474,289,100,269,296,478,270,106, 31,104,433, 84, - 414,486,394, 96, 99,154,511,148,413,361,409,255,162,215,302,201, - 266,351,343,144,441,365,108,298,251, 34,182,509,138,210,335,133, - 311,352,328,141,396,346,123,319,450,281,429,228,443,481, 92,404, - 485,422,248,297, 23,213,130,466, 22,217,283, 70,294,360,419,127, - 312,377, 7,468,194, 2,117,295,463,258,224,447,247,187, 80,398, - 284,353,105,390,299,471,470,184, 57,200,348, 63,204,188, 33,451, - 97, 30,310,219, 94,160,129,493, 64,179,263,102,189,207,114,402, - 438,477,387,122,192, 42,381, 5,145,118,180,449,293,323,136,380, - 43, 66, 60,455,341,445,202,432, 8,237, 15,376,436,464, 59,461}; - - /* The sixteen bit input is split into two unequal halves, * - * nine bits and seven bits - as is the subkey */ - - nine = (u16)(in>>7)&0x1FF; - seven = (u16)(in&0x7F); - - /* Now run the various operations */ - nine = (u16)(S9[nine] ^ seven); - seven = (u16)(S7[seven] ^ (nine & 0x7F)); - seven ^= (subkey>>9); - nine ^= (subkey&0x1FF); - nine = (u16)(S9[nine] ^ seven); - seven = (u16)(S7[seven] ^ (nine & 0x7F)); - return (u16)(seven<<9) + nine; -} - -static ulong32 FO( ulong32 in, int round_no, symmetric_key *key) -{ - u16 left, right; - - /* Split the input into two 16-bit words */ - left = (u16)(in>>16); - right = (u16) in&0xFFFF; - - /* Now apply the same basic transformation three times */ - left ^= key->kasumi.KOi1[round_no]; - left = FI( left, key->kasumi.KIi1[round_no] ); - left ^= right; - - right ^= key->kasumi.KOi2[round_no]; - right = FI( right, key->kasumi.KIi2[round_no] ); - right ^= left; - - left ^= key->kasumi.KOi3[round_no]; - left = FI( left, key->kasumi.KIi3[round_no] ); - left ^= right; - - return (((ulong32)right)<<16)+left; -} - -static ulong32 FL( ulong32 in, int round_no, symmetric_key *key ) -{ - u16 l, r, a, b; - /* split out the left and right halves */ - l = (u16)(in>>16); - r = (u16)(in)&0xFFFF; - /* do the FL() operations */ - a = (u16) (l & key->kasumi.KLi1[round_no]); - r ^= ROL16(a,1); - b = (u16)(r | key->kasumi.KLi2[round_no]); - l ^= ROL16(b,1); - /* put the two halves back together */ - - return (((ulong32)l)<<16) + r; -} - -int kasumi_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey) -{ - ulong32 left, right, temp; - int n; - - LTC_ARGCHK(pt != NULL); - LTC_ARGCHK(ct != NULL); - LTC_ARGCHK(skey != NULL); - - LOAD32H(left, pt); - LOAD32H(right, pt+4); - - for (n = 0; n <= 7; ) { - temp = FL(left, n, skey); - temp = FO(temp, n++, skey); - right ^= temp; - temp = FO(right, n, skey); - temp = FL(temp, n++, skey); - left ^= temp; - } - - STORE32H(left, ct); - STORE32H(right, ct+4); - - return CRYPT_OK; -} - -int kasumi_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey) -{ - ulong32 left, right, temp; - int n; - - LTC_ARGCHK(pt != NULL); - LTC_ARGCHK(ct != NULL); - LTC_ARGCHK(skey != NULL); - - LOAD32H(left, ct); - LOAD32H(right, ct+4); - - for (n = 7; n >= 0; ) { - temp = FO(right, n, skey); - temp = FL(temp, n--, skey); - left ^= temp; - temp = FL(left, n, skey); - temp = FO(temp, n--, skey); - right ^= temp; - } - - STORE32H(left, pt); - STORE32H(right, pt+4); - - return CRYPT_OK; -} - -int kasumi_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey) -{ - static const u16 C[8] = { 0x0123,0x4567,0x89AB,0xCDEF, 0xFEDC,0xBA98,0x7654,0x3210 }; - u16 ukey[8], Kprime[8]; - int n; - - LTC_ARGCHK(key != NULL); - LTC_ARGCHK(skey != NULL); - - if (keylen != 16) { - return CRYPT_INVALID_KEYSIZE; - } - - if (num_rounds != 0 && num_rounds != 8) { - return CRYPT_INVALID_ROUNDS; - } - - /* Start by ensuring the subkeys are endian correct on a 16-bit basis */ - for (n = 0; n < 8; n++ ) { - ukey[n] = (((u16)key[2*n]) << 8) | key[2*n+1]; - } - - /* Now build the K'[] keys */ - for (n = 0; n < 8; n++) { - Kprime[n] = ukey[n] ^ C[n]; - } - - /* Finally construct the various sub keys */ - for(n = 0; n < 8; n++) { - skey->kasumi.KLi1[n] = ROL16(ukey[n],1); - skey->kasumi.KLi2[n] = Kprime[(n+2)&0x7]; - skey->kasumi.KOi1[n] = ROL16(ukey[(n+1)&0x7],5); - skey->kasumi.KOi2[n] = ROL16(ukey[(n+5)&0x7],8); - skey->kasumi.KOi3[n] = ROL16(ukey[(n+6)&0x7],13); - skey->kasumi.KIi1[n] = Kprime[(n+4)&0x7]; - skey->kasumi.KIi2[n] = Kprime[(n+3)&0x7]; - skey->kasumi.KIi3[n] = Kprime[(n+7)&0x7]; - } - - return CRYPT_OK; -} - -void kasumi_done(symmetric_key *skey) -{ - LTC_UNUSED_PARAM(skey); -} - -int kasumi_keysize(int *keysize) -{ - LTC_ARGCHK(keysize != NULL); - if (*keysize >= 16) { - *keysize = 16; - return CRYPT_OK; - } else { - return CRYPT_INVALID_KEYSIZE; - } -} - -int kasumi_test(void) -{ -#ifndef LTC_TEST - return CRYPT_NOP; -#else - static const struct { - unsigned char key[16], pt[8], ct[8]; - } tests[] = { - -{ - { 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, - { 0x4B, 0x58, 0xA7, 0x71, 0xAF, 0xC7, 0xE5, 0xE8 } -}, - -{ - { 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, - { 0x7E, 0xEF, 0x11, 0x3C, 0x95, 0xBB, 0x5A, 0x77 } -}, - -{ - { 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, - { 0x5F, 0x14, 0x06, 0x86, 0xD7, 0xAD, 0x5A, 0x39 }, -}, - -{ - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, - { 0x2E, 0x14, 0x91, 0xCF, 0x70, 0xAA, 0x46, 0x5D } -}, - -{ - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00 }, - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, - { 0xB5, 0x45, 0x86, 0xF4, 0xAB, 0x9A, 0xE5, 0x46 } -}, - -}; - unsigned char buf[2][8]; - symmetric_key key; - int err, x; - - for (x = 0; x < (int)(sizeof(tests)/sizeof(tests[0])); x++) { - if ((err = kasumi_setup(tests[x].key, 16, 0, &key)) != CRYPT_OK) { - return err; - } - if ((err = kasumi_ecb_encrypt(tests[x].pt, buf[0], &key)) != CRYPT_OK) { - return err; - } - if ((err = kasumi_ecb_decrypt(tests[x].ct, buf[1], &key)) != CRYPT_OK) { - return err; - } - if (compare_testvector(buf[1], 8, tests[x].pt, 8, "Kasumi Decrypt", x) || - compare_testvector(buf[0], 8, tests[x].ct, 8, "Kasumi Encrypt", x)) { - return CRYPT_FAIL_TESTVECTOR; - } - } - return CRYPT_OK; -#endif -} - -#endif - -/* ref: $Format:%D$ */ -/* git commit: $Format:%H$ */ -/* commit time: $Format:%ai$ */