diff options
Diffstat (limited to 'libtomcrypt/src/hashes/blake2s.c')
| -rw-r--r-- | libtomcrypt/src/hashes/blake2s.c | 563 |
1 files changed, 563 insertions, 0 deletions
diff --git a/libtomcrypt/src/hashes/blake2s.c b/libtomcrypt/src/hashes/blake2s.c new file mode 100644 index 0000000..e3e90f8 --- /dev/null +++ b/libtomcrypt/src/hashes/blake2s.c @@ -0,0 +1,563 @@ +/* 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. + */ + +/* + BLAKE2 reference source code package - reference C implementations + + Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the + terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at + your option. The terms of these licenses can be found at: + + - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0 + - OpenSSL license : https://www.openssl.org/source/license.html + - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0 + + More information about the BLAKE2 hash function can be found at + https://blake2.net. +*/ +/* see also https://www.ietf.org/rfc/rfc7693.txt */ + +#include "tomcrypt.h" + +#ifdef LTC_BLAKE2S + +enum blake2s_constant { + BLAKE2S_BLOCKBYTES = 64, + BLAKE2S_OUTBYTES = 32, + BLAKE2S_KEYBYTES = 32, + BLAKE2S_SALTBYTES = 8, + BLAKE2S_PERSONALBYTES = 8, + BLAKE2S_PARAM_SIZE = 32 +}; + +/* param offsets */ +enum { + O_DIGEST_LENGTH = 0, + O_KEY_LENGTH = 1, + O_FANOUT = 2, + O_DEPTH = 3, + O_LEAF_LENGTH = 4, + O_NODE_OFFSET = 8, + O_XOF_LENGTH = 12, + O_NODE_DEPTH = 14, + O_INNER_LENGTH = 15, + O_SALT = 16, + O_PERSONAL = 24 +}; + +/* +struct blake2s_param { + unsigned char digest_length; + unsigned char key_length; + unsigned char fanout; + unsigned char depth; + ulong32 leaf_length; + ulong32 node_offset; + ushort16 xof_length; + unsigned char node_depth; + unsigned char inner_length; + unsigned char salt[BLAKE2S_SALTBYTES]; + unsigned char personal[BLAKE2S_PERSONALBYTES]; +}; +*/ + +const struct ltc_hash_descriptor blake2s_128_desc = +{ + "blake2s-128", + 21, + 16, + 64, + { 1, 3, 6, 1, 4, 1, 1722, 12, 2, 2, 4 }, + 11, + &blake2s_128_init, + &blake2s_process, + &blake2s_done, + &blake2s_128_test, + NULL +}; + +const struct ltc_hash_descriptor blake2s_160_desc = +{ + "blake2s-160", + 22, + 20, + 64, + { 1, 3, 6, 1, 4, 1, 1722, 12, 2, 2, 5 }, + 11, + &blake2s_160_init, + &blake2s_process, + &blake2s_done, + &blake2s_160_test, + NULL +}; + +const struct ltc_hash_descriptor blake2s_224_desc = +{ + "blake2s-224", + 23, + 28, + 64, + { 1, 3, 6, 1, 4, 1, 1722, 12, 2, 2, 7 }, + 11, + &blake2s_224_init, + &blake2s_process, + &blake2s_done, + &blake2s_224_test, + NULL +}; + +const struct ltc_hash_descriptor blake2s_256_desc = +{ + "blake2s-256", + 24, + 32, + 64, + { 1, 3, 6, 1, 4, 1, 1722, 12, 2, 2, 8 }, + 11, + &blake2s_256_init, + &blake2s_process, + &blake2s_done, + &blake2s_256_test, + NULL +}; + +static const ulong32 blake2s_IV[8] = { + 0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL, + 0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL +}; + +static const unsigned char blake2s_sigma[10][16] = { + { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, + { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }, + { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 }, + { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 }, + { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 }, + { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 }, + { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 }, + { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 }, + { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 }, + { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0 }, +}; + +static void blake2s_set_lastnode(hash_state *md) { md->blake2s.f[1] = 0xffffffffUL; } + +/* Some helper functions, not necessarily useful */ +static int blake2s_is_lastblock(const hash_state *md) { return md->blake2s.f[0] != 0; } + +static void blake2s_set_lastblock(hash_state *md) +{ + if (md->blake2s.last_node) + blake2s_set_lastnode(md); + + md->blake2s.f[0] = 0xffffffffUL; +} + +static void blake2s_increment_counter(hash_state *md, const ulong32 inc) +{ + md->blake2s.t[0] += inc; + if (md->blake2s.t[0] < inc) md->blake2s.t[1]++; +} + +static int blake2s_init0(hash_state *md) +{ + int i; + XMEMSET(&md->blake2s, 0, sizeof(struct blake2s_state)); + + for (i = 0; i < 8; ++i) + md->blake2s.h[i] = blake2s_IV[i]; + + return CRYPT_OK; +} + +/* init2 xors IV with input parameter block */ +static int blake2s_init_param(hash_state *md, const unsigned char *P) +{ + unsigned long i; + + blake2s_init0(md); + + /* IV XOR ParamBlock */ + for (i = 0; i < 8; ++i) { + ulong32 tmp; + LOAD32L(tmp, P + i * 4); + md->blake2s.h[i] ^= tmp; + } + + md->blake2s.outlen = P[O_DIGEST_LENGTH]; + return CRYPT_OK; +} + +int blake2s_init(hash_state *md, unsigned long outlen, const unsigned char *key, unsigned long keylen) +{ + unsigned char P[BLAKE2S_PARAM_SIZE]; + int err; + + LTC_ARGCHK(md != NULL); + + if ((!outlen) || (outlen > BLAKE2S_OUTBYTES)) + return CRYPT_INVALID_ARG; + + if ((key && !keylen) || (keylen && !key) || (keylen > BLAKE2S_KEYBYTES)) + return CRYPT_INVALID_ARG; + + XMEMSET(P, 0, sizeof(P)); + + P[O_DIGEST_LENGTH] = (unsigned char)outlen; + P[O_KEY_LENGTH] = (unsigned char)keylen; + P[O_FANOUT] = 1; + P[O_DEPTH] = 1; + + err = blake2s_init_param(md, P); + if (err != CRYPT_OK) return err; + + if (key) { + unsigned char block[BLAKE2S_BLOCKBYTES]; + + XMEMSET(block, 0, BLAKE2S_BLOCKBYTES); + XMEMCPY(block, key, keylen); + blake2s_process(md, block, BLAKE2S_BLOCKBYTES); + +#ifdef LTC_CLEAN_STACK + zeromem(block, sizeof(block)); +#endif + } + return CRYPT_OK; +} + +int blake2s_128_init(hash_state *md) { return blake2s_init(md, 16, NULL, 0); } + +int blake2s_160_init(hash_state *md) { return blake2s_init(md, 20, NULL, 0); } + +int blake2s_224_init(hash_state *md) { return blake2s_init(md, 28, NULL, 0); } + +int blake2s_256_init(hash_state *md) { return blake2s_init(md, 32, NULL, 0); } + +#define G(r, i, a, b, c, d) \ + do { \ + a = a + b + m[blake2s_sigma[r][2 * i + 0]]; \ + d = ROR(d ^ a, 16); \ + c = c + d; \ + b = ROR(b ^ c, 12); \ + a = a + b + m[blake2s_sigma[r][2 * i + 1]]; \ + d = ROR(d ^ a, 8); \ + c = c + d; \ + b = ROR(b ^ c, 7); \ + } while (0) +#define ROUND(r) \ + do { \ + G(r, 0, v[0], v[4], v[8], v[12]); \ + G(r, 1, v[1], v[5], v[9], v[13]); \ + G(r, 2, v[2], v[6], v[10], v[14]); \ + G(r, 3, v[3], v[7], v[11], v[15]); \ + G(r, 4, v[0], v[5], v[10], v[15]); \ + G(r, 5, v[1], v[6], v[11], v[12]); \ + G(r, 6, v[2], v[7], v[8], v[13]); \ + G(r, 7, v[3], v[4], v[9], v[14]); \ + } while (0) + +#ifdef LTC_CLEAN_STACK +static int _blake2s_compress(hash_state *md, const unsigned char *buf) +#else +static int blake2s_compress(hash_state *md, const unsigned char *buf) +#endif +{ + unsigned long i; + ulong32 m[16]; + ulong32 v[16]; + + for (i = 0; i < 16; ++i) { + LOAD32L(m[i], buf + i * sizeof(m[i])); + } + + for (i = 0; i < 8; ++i) + v[i] = md->blake2s.h[i]; + + v[8] = blake2s_IV[0]; + v[9] = blake2s_IV[1]; + v[10] = blake2s_IV[2]; + v[11] = blake2s_IV[3]; + v[12] = md->blake2s.t[0] ^ blake2s_IV[4]; + v[13] = md->blake2s.t[1] ^ blake2s_IV[5]; + v[14] = md->blake2s.f[0] ^ blake2s_IV[6]; + v[15] = md->blake2s.f[1] ^ blake2s_IV[7]; + + ROUND(0); + ROUND(1); + ROUND(2); + ROUND(3); + ROUND(4); + ROUND(5); + ROUND(6); + ROUND(7); + ROUND(8); + ROUND(9); + + for (i = 0; i < 8; ++i) + md->blake2s.h[i] = md->blake2s.h[i] ^ v[i] ^ v[i + 8]; + + return CRYPT_OK; +} +#undef G +#undef ROUND + +#ifdef LTC_CLEAN_STACK +static int blake2s_compress(hash_state *md, const unsigned char *buf) +{ + int err; + err = _blake2s_compress(md, buf); + burn_stack(sizeof(ulong32) * (32) + sizeof(unsigned long)); + return err; +} +#endif + +int blake2s_process(hash_state *md, const unsigned char *in, unsigned long inlen) +{ + LTC_ARGCHK(md != NULL); + LTC_ARGCHK(in != NULL); + + if (md->blake2s.curlen > sizeof(md->blake2s.buf)) { + return CRYPT_INVALID_ARG; + } + + if (inlen > 0) { + unsigned long left = md->blake2s.curlen; + unsigned long fill = BLAKE2S_BLOCKBYTES - left; + if (inlen > fill) { + md->blake2s.curlen = 0; + XMEMCPY(md->blake2s.buf + (left % sizeof(md->blake2s.buf)), in, fill); /* Fill buffer */ + blake2s_increment_counter(md, BLAKE2S_BLOCKBYTES); + blake2s_compress(md, md->blake2s.buf); /* Compress */ + in += fill; + inlen -= fill; + while (inlen > BLAKE2S_BLOCKBYTES) { + blake2s_increment_counter(md, BLAKE2S_BLOCKBYTES); + blake2s_compress(md, in); + in += BLAKE2S_BLOCKBYTES; + inlen -= BLAKE2S_BLOCKBYTES; + } + } + XMEMCPY(md->blake2s.buf + md->blake2s.curlen, in, inlen); + md->blake2s.curlen += inlen; + } + return CRYPT_OK; +} + +int blake2s_done(hash_state *md, unsigned char *out) +{ + unsigned char buffer[BLAKE2S_OUTBYTES] = { 0 }; + unsigned long i; + + LTC_ARGCHK(md != NULL); + LTC_ARGCHK(out != NULL); + + /* if(md->blake2s.outlen != outlen) return CRYPT_INVALID_ARG; */ + + if (blake2s_is_lastblock(md)) + return CRYPT_ERROR; + + blake2s_increment_counter(md, md->blake2s.curlen); + blake2s_set_lastblock(md); + XMEMSET(md->blake2s.buf + md->blake2s.curlen, 0, BLAKE2S_BLOCKBYTES - md->blake2s.curlen); /* Padding */ + blake2s_compress(md, md->blake2s.buf); + + for (i = 0; i < 8; ++i) /* Output full hash to temp buffer */ + STORE32L(md->blake2s.h[i], buffer + i * 4); + + XMEMCPY(out, buffer, md->blake2s.outlen); + zeromem(md, sizeof(hash_state)); +#ifdef LTC_CLEAN_STACK + zeromem(buffer, sizeof(buffer)); +#endif + return CRYPT_OK; +} + +/** + Self-test the hash + @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled +*/ +int blake2s_256_test(void) +{ +#ifndef LTC_TEST + return CRYPT_NOP; +#else + static const struct { + const char *msg; + unsigned char hash[32]; + } tests[] = { + { "", + { 0x69, 0x21, 0x7a, 0x30, 0x79, 0x90, 0x80, 0x94, + 0xe1, 0x11, 0x21, 0xd0, 0x42, 0x35, 0x4a, 0x7c, + 0x1f, 0x55, 0xb6, 0x48, 0x2c, 0xa1, 0xa5, 0x1e, + 0x1b, 0x25, 0x0d, 0xfd, 0x1e, 0xd0, 0xee, 0xf9 } }, + { "abc", + { 0x50, 0x8c, 0x5e, 0x8c, 0x32, 0x7c, 0x14, 0xe2, + 0xe1, 0xa7, 0x2b, 0xa3, 0x4e, 0xeb, 0x45, 0x2f, + 0x37, 0x45, 0x8b, 0x20, 0x9e, 0xd6, 0x3a, 0x29, + 0x4d, 0x99, 0x9b, 0x4c, 0x86, 0x67, 0x59, 0x82 } }, + { "12345678901234567890123456789012345678901234567890" + "12345678901234567890123456789012345678901234567890" + "12345678901234567890123456789012345678901234567890" + "12345678901234567890123456789012345678901234567890" + "12345678901234567890123456789012345678901234567890" + "12345678901234567890123456789012345678901234567890", + { 0xa3, 0x78, 0x8b, 0x5b, 0x59, 0xee, 0xe4, 0x41, + 0x95, 0x23, 0x58, 0x00, 0xa4, 0xf9, 0xfa, 0x41, + 0x86, 0x0c, 0x7b, 0x1c, 0x35, 0xa2, 0x42, 0x70, + 0x50, 0x80, 0x79, 0x56, 0xe3, 0xbe, 0x31, 0x74 } }, + + { NULL, { 0 } } + }; + + int i; + unsigned char tmp[32]; + hash_state md; + + for (i = 0; tests[i].msg != NULL; i++) { + blake2s_256_init(&md); + blake2s_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg)); + blake2s_done(&md, tmp); + if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "BLAKE2S_256", i)) { + return CRYPT_FAIL_TESTVECTOR; + } + + } + return CRYPT_OK; +#endif +} + +/** + Self-test the hash + @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled +*/ +int blake2s_224_test(void) +{ +#ifndef LTC_TEST + return CRYPT_NOP; +#else + static const struct { + const char *msg; + unsigned char hash[28]; + } tests[] = { + { "", + { 0x1f, 0xa1, 0x29, 0x1e, 0x65, 0x24, 0x8b, 0x37, + 0xb3, 0x43, 0x34, 0x75, 0xb2, 0xa0, 0xdd, 0x63, + 0xd5, 0x4a, 0x11, 0xec, 0xc4, 0xe3, 0xe0, 0x34, + 0xe7, 0xbc, 0x1e, 0xf4 } }, + { "abc", + { 0x0b, 0x03, 0x3f, 0xc2, 0x26, 0xdf, 0x7a, 0xbd, + 0xe2, 0x9f, 0x67, 0xa0, 0x5d, 0x3d, 0xc6, 0x2c, + 0xf2, 0x71, 0xef, 0x3d, 0xfe, 0xa4, 0xd3, 0x87, + 0x40, 0x7f, 0xbd, 0x55 } }, + + { NULL, { 0 } } + }; + + int i; + unsigned char tmp[28]; + hash_state md; + + for (i = 0; tests[i].msg != NULL; i++) { + blake2s_224_init(&md); + blake2s_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg)); + blake2s_done(&md, tmp); + if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "BLAKE2S_224", i)) { + return CRYPT_FAIL_TESTVECTOR; + } + + } + return CRYPT_OK; +#endif +} + +/** + Self-test the hash + @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled +*/ +int blake2s_160_test(void) +{ +#ifndef LTC_TEST + return CRYPT_NOP; +#else + static const struct { + const char *msg; + unsigned char hash[20]; + } tests[] = { + { "", + { 0x35, 0x4c, 0x9c, 0x33, 0xf7, 0x35, 0x96, 0x24, + 0x18, 0xbd, 0xac, 0xb9, 0x47, 0x98, 0x73, 0x42, + 0x9c, 0x34, 0x91, 0x6f} }, + { "abc", + { 0x5a, 0xe3, 0xb9, 0x9b, 0xe2, 0x9b, 0x01, 0x83, + 0x4c, 0x3b, 0x50, 0x85, 0x21, 0xed, 0xe6, 0x04, + 0x38, 0xf8, 0xde, 0x17 } }, + + { NULL, { 0 } } + }; + + int i; + unsigned char tmp[20]; + hash_state md; + + for (i = 0; tests[i].msg != NULL; i++) { + blake2s_160_init(&md); + blake2s_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg)); + blake2s_done(&md, tmp); + if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "BLAKE2S_160", i)) { + return CRYPT_FAIL_TESTVECTOR; + } + + } + return CRYPT_OK; +#endif +} + +/** + Self-test the hash + @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled +*/ +int blake2s_128_test(void) +{ +#ifndef LTC_TEST + return CRYPT_NOP; +#else + static const struct { + const char *msg; + unsigned char hash[16]; + } tests[] = { + { "", + { 0x64, 0x55, 0x0d, 0x6f, 0xfe, 0x2c, 0x0a, 0x01, + 0xa1, 0x4a, 0xba, 0x1e, 0xad, 0xe0, 0x20, 0x0c } }, + { "abc", + { 0xaa, 0x49, 0x38, 0x11, 0x9b, 0x1d, 0xc7, 0xb8, + 0x7c, 0xba, 0xd0, 0xff, 0xd2, 0x00, 0xd0, 0xae } }, + + { NULL, { 0 } } + }; + + int i; + unsigned char tmp[16]; + hash_state md; + + for (i = 0; tests[i].msg != NULL; i++) { + blake2s_128_init(&md); + blake2s_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg)); + blake2s_done(&md, tmp); + if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "BLAKE2S_128", i)) { + return CRYPT_FAIL_TESTVECTOR; + } + } + return CRYPT_OK; +#endif +} + +#endif + +/* ref: $Format:%D$ */ +/* git commit: $Format:%H$ */ +/* commit time: $Format:%ai$ */ |