X-Git-Url: https://pd.if.org/git/?p=zpackage;a=blobdiff_plain;f=libtomcrypt%2Fsrc%2Fhashes%2Fmd2.c;fp=libtomcrypt%2Fsrc%2Fhashes%2Fmd2.c;h=0000000000000000000000000000000000000000;hp=36cc8aecaf03b62fd04a510db48ca19d0151eafe;hb=094fa8c1bc2e27a560833c6a829b1d9b60de7034;hpb=27410df6ded2d78850397c159cbccff1a78012f2 diff --git a/libtomcrypt/src/hashes/md2.c b/libtomcrypt/src/hashes/md2.c deleted file mode 100644 index 36cc8ae..0000000 --- a/libtomcrypt/src/hashes/md2.c +++ /dev/null @@ -1,250 +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. - */ -#include "tomcrypt.h" - -/** - @param md2.c - LTC_MD2 (RFC 1319) hash function implementation by Tom St Denis -*/ - -#ifdef LTC_MD2 - -const struct ltc_hash_descriptor md2_desc = -{ - "md2", - 7, - 16, - 16, - - /* OID */ - { 1, 2, 840, 113549, 2, 2, }, - 6, - - &md2_init, - &md2_process, - &md2_done, - &md2_test, - NULL -}; - -static const unsigned char PI_SUBST[256] = { - 41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6, - 19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188, - 76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24, - 138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251, - 245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63, - 148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50, - 39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165, - 181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210, - 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157, - 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27, - 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15, - 85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197, - 234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65, - 129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123, - 8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233, - 203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228, - 166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237, - 31, 26, 219, 153, 141, 51, 159, 17, 131, 20 -}; - -/* adds 16 bytes to the checksum */ -static void md2_update_chksum(hash_state *md) -{ - int j; - unsigned char L; - L = md->md2.chksum[15]; - for (j = 0; j < 16; j++) { - -/* caution, the RFC says its "C[j] = S[M[i*16+j] xor L]" but the reference source code [and test vectors] say - otherwise. -*/ - L = (md->md2.chksum[j] ^= PI_SUBST[(int)(md->md2.buf[j] ^ L)] & 255); - } -} - -static void md2_compress(hash_state *md) -{ - int j, k; - unsigned char t; - - /* copy block */ - for (j = 0; j < 16; j++) { - md->md2.X[16+j] = md->md2.buf[j]; - md->md2.X[32+j] = md->md2.X[j] ^ md->md2.X[16+j]; - } - - t = (unsigned char)0; - - /* do 18 rounds */ - for (j = 0; j < 18; j++) { - for (k = 0; k < 48; k++) { - t = (md->md2.X[k] ^= PI_SUBST[(int)(t & 255)]); - } - t = (t + (unsigned char)j) & 255; - } -} - -/** - Initialize the hash state - @param md The hash state you wish to initialize - @return CRYPT_OK if successful -*/ -int md2_init(hash_state *md) -{ - LTC_ARGCHK(md != NULL); - - /* LTC_MD2 uses a zero'ed state... */ - zeromem(md->md2.X, sizeof(md->md2.X)); - zeromem(md->md2.chksum, sizeof(md->md2.chksum)); - zeromem(md->md2.buf, sizeof(md->md2.buf)); - md->md2.curlen = 0; - return CRYPT_OK; -} - -/** - Process a block of memory though the hash - @param md The hash state - @param in The data to hash - @param inlen The length of the data (octets) - @return CRYPT_OK if successful -*/ -int md2_process(hash_state *md, const unsigned char *in, unsigned long inlen) -{ - unsigned long n; - LTC_ARGCHK(md != NULL); - LTC_ARGCHK(in != NULL); - if (md-> md2 .curlen > sizeof(md-> md2 .buf)) { - return CRYPT_INVALID_ARG; - } - while (inlen > 0) { - n = MIN(inlen, (16 - md->md2.curlen)); - XMEMCPY(md->md2.buf + md->md2.curlen, in, (size_t)n); - md->md2.curlen += n; - in += n; - inlen -= n; - - /* is 16 bytes full? */ - if (md->md2.curlen == 16) { - md2_compress(md); - md2_update_chksum(md); - md->md2.curlen = 0; - } - } - return CRYPT_OK; -} - -/** - Terminate the hash to get the digest - @param md The hash state - @param out [out] The destination of the hash (16 bytes) - @return CRYPT_OK if successful -*/ -int md2_done(hash_state * md, unsigned char *out) -{ - unsigned long i, k; - - LTC_ARGCHK(md != NULL); - LTC_ARGCHK(out != NULL); - - if (md->md2.curlen >= sizeof(md->md2.buf)) { - return CRYPT_INVALID_ARG; - } - - - /* pad the message */ - k = 16 - md->md2.curlen; - for (i = md->md2.curlen; i < 16; i++) { - md->md2.buf[i] = (unsigned char)k; - } - - /* hash and update */ - md2_compress(md); - md2_update_chksum(md); - - /* hash checksum */ - XMEMCPY(md->md2.buf, md->md2.chksum, 16); - md2_compress(md); - - /* output is lower 16 bytes of X */ - XMEMCPY(out, md->md2.X, 16); - -#ifdef LTC_CLEAN_STACK - zeromem(md, sizeof(hash_state)); -#endif - return CRYPT_OK; -} - -/** - Self-test the hash - @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled -*/ -int md2_test(void) -{ - #ifndef LTC_TEST - return CRYPT_NOP; - #else - static const struct { - const char *msg; - unsigned char hash[16]; - } tests[] = { - { "", - {0x83,0x50,0xe5,0xa3,0xe2,0x4c,0x15,0x3d, - 0xf2,0x27,0x5c,0x9f,0x80,0x69,0x27,0x73 - } - }, - { "a", - {0x32,0xec,0x01,0xec,0x4a,0x6d,0xac,0x72, - 0xc0,0xab,0x96,0xfb,0x34,0xc0,0xb5,0xd1 - } - }, - { "message digest", - {0xab,0x4f,0x49,0x6b,0xfb,0x2a,0x53,0x0b, - 0x21,0x9f,0xf3,0x30,0x31,0xfe,0x06,0xb0 - } - }, - { "abcdefghijklmnopqrstuvwxyz", - {0x4e,0x8d,0xdf,0xf3,0x65,0x02,0x92,0xab, - 0x5a,0x41,0x08,0xc3,0xaa,0x47,0x94,0x0b - } - }, - { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", - {0xda,0x33,0xde,0xf2,0xa4,0x2d,0xf1,0x39, - 0x75,0x35,0x28,0x46,0xc3,0x03,0x38,0xcd - } - }, - { "12345678901234567890123456789012345678901234567890123456789012345678901234567890", - {0xd5,0x97,0x6f,0x79,0xd8,0x3d,0x3a,0x0d, - 0xc9,0x80,0x6c,0x3c,0x66,0xf3,0xef,0xd8 - } - } - }; - - int i; - unsigned char tmp[16]; - hash_state md; - - for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) { - md2_init(&md); - md2_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg)); - md2_done(&md, tmp); - if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "MD2", i)) { - return CRYPT_FAIL_TESTVECTOR; - } - } - return CRYPT_OK; - #endif -} - -#endif - - -/* ref: $Format:%D$ */ -/* git commit: $Format:%H$ */ -/* commit time: $Format:%ai$ */