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author | Eliseo Martínez <eliseomarmol@gmail.com> | 2014-05-12 02:25:17 +0200 |
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committer | Eliseo Martínez <eliseomarmol@gmail.com> | 2014-05-15 20:46:01 +0200 |
commit | da51dc9cf202772f60bd2da975dbef257bd9237c (patch) | |
tree | 5c16b93238a153f55634e9323077f30c8133970c /src/sha256.c | |
parent | ffe61e5ba1721340ca51d56bae3ddaca415fb5bc (diff) | |
download | rneovim-da51dc9cf202772f60bd2da975dbef257bd9237c.tar.gz rneovim-da51dc9cf202772f60bd2da975dbef257bd9237c.tar.bz2 rneovim-da51dc9cf202772f60bd2da975dbef257bd9237c.zip |
Introduce nvim namespace: Move files.
Move files from src/ to src/nvim/.
- src/nvim/ becomes the new root dir for nvim executable sources.
- src/libnvim/ is planned to become root dir of the neovim library.
Diffstat (limited to 'src/sha256.c')
-rw-r--r-- | src/sha256.c | 418 |
1 files changed, 0 insertions, 418 deletions
diff --git a/src/sha256.c b/src/sha256.c deleted file mode 100644 index 0ccb13d763..0000000000 --- a/src/sha256.c +++ /dev/null @@ -1,418 +0,0 @@ -/// @file sha256.c -/// -/// FIPS-180-2 compliant SHA-256 implementation -/// GPL by Christophe Devine, applies to older version. -/// Modified for md5deep, in public domain. -/// Modified For Vim, Mohsin Ahmed, http://www.cs.albany.edu/~mosh -/// Mohsin Ahmed states this work is distributed under the VIM License or GPL, -/// at your choice. -/// -/// Vim specific notes: -/// Functions exported by this file: -/// 1. sha256_key() hashes the password to 64 bytes char string. -/// 2. sha2_seed() generates a random header. -/// sha256_self_test() is implicitly called once. - -#include <string.h> - -#include "vim.h" -#include "sha256.h" - -static void sha256_process(context_sha256_T *ctx, char_u data[64]); - -#define GET_UINT32(n, b, i) { \ - (n) = ((uint32_t)(b)[(i)] << 24) \ - | ((uint32_t)(b)[(i) + 1] << 16) \ - | ((uint32_t)(b)[(i) + 2] << 8) \ - | ((uint32_t)(b)[(i) + 3]); \ -} - -#define PUT_UINT32(n, b, i) { \ - (b)[(i)] = (char_u)((n) >> 24); \ - (b)[(i) + 1] = (char_u)((n) >> 16); \ - (b)[(i) + 2] = (char_u)((n) >> 8); \ - (b)[(i) + 3] = (char_u)((n)); \ -} - -void sha256_start(context_sha256_T *ctx) -{ - ctx->total[0] = 0; - ctx->total[1] = 0; - - ctx->state[0] = 0x6A09E667; - ctx->state[1] = 0xBB67AE85; - ctx->state[2] = 0x3C6EF372; - ctx->state[3] = 0xA54FF53A; - ctx->state[4] = 0x510E527F; - ctx->state[5] = 0x9B05688C; - ctx->state[6] = 0x1F83D9AB; - ctx->state[7] = 0x5BE0CD19; -} - -static void sha256_process(context_sha256_T *ctx, char_u data[64]) -{ - uint32_t temp1, temp2, W[64]; - uint32_t A, B, C, D, E, F, G, H; - - GET_UINT32(W[0], data, 0); - GET_UINT32(W[1], data, 4); - GET_UINT32(W[2], data, 8); - GET_UINT32(W[3], data, 12); - GET_UINT32(W[4], data, 16); - GET_UINT32(W[5], data, 20); - GET_UINT32(W[6], data, 24); - GET_UINT32(W[7], data, 28); - GET_UINT32(W[8], data, 32); - GET_UINT32(W[9], data, 36); - GET_UINT32(W[10], data, 40); - GET_UINT32(W[11], data, 44); - GET_UINT32(W[12], data, 48); - GET_UINT32(W[13], data, 52); - GET_UINT32(W[14], data, 56); - GET_UINT32(W[15], data, 60); - -#define SHR(x, n) ((x & 0xFFFFFFFF) >> n) -#define ROTR(x, n) (SHR(x, n) | (x << (32 - n))) - -#define S0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHR(x, 3)) -#define S1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHR(x, 10)) - -#define S2(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22)) -#define S3(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25)) - -#define F0(x, y, z) ((x & y) | (z & (x | y))) -#define F1(x, y, z) (z ^ (x & (y ^ z))) - -#define R(t) \ - (W[t] = S1(W[t - 2]) + W[t - 7] + \ - S0(W[t - 15]) + W[t - 16]) - -#define P(a, b, c, d, e, f, g, h, x, K) { \ - temp1 = h + S3(e) + F1(e, f, g) + K + x; \ - temp2 = S2(a) + F0(a, b, c); \ - d += temp1; h = temp1 + temp2; \ -} - - A = ctx->state[0]; - B = ctx->state[1]; - C = ctx->state[2]; - D = ctx->state[3]; - E = ctx->state[4]; - F = ctx->state[5]; - G = ctx->state[6]; - H = ctx->state[7]; - - P(A, B, C, D, E, F, G, H, W[0], 0x428A2F98); - P(H, A, B, C, D, E, F, G, W[1], 0x71374491); - P(G, H, A, B, C, D, E, F, W[2], 0xB5C0FBCF); - P(F, G, H, A, B, C, D, E, W[3], 0xE9B5DBA5); - P(E, F, G, H, A, B, C, D, W[4], 0x3956C25B); - P(D, E, F, G, H, A, B, C, W[5], 0x59F111F1); - P(C, D, E, F, G, H, A, B, W[6], 0x923F82A4); - P(B, C, D, E, F, G, H, A, W[7], 0xAB1C5ED5); - P(A, B, C, D, E, F, G, H, W[8], 0xD807AA98); - P(H, A, B, C, D, E, F, G, W[9], 0x12835B01); - P(G, H, A, B, C, D, E, F, W[10], 0x243185BE); - P(F, G, H, A, B, C, D, E, W[11], 0x550C7DC3); - P(E, F, G, H, A, B, C, D, W[12], 0x72BE5D74); - P(D, E, F, G, H, A, B, C, W[13], 0x80DEB1FE); - P(C, D, E, F, G, H, A, B, W[14], 0x9BDC06A7); - P(B, C, D, E, F, G, H, A, W[15], 0xC19BF174); - P(A, B, C, D, E, F, G, H, R(16), 0xE49B69C1); - P(H, A, B, C, D, E, F, G, R(17), 0xEFBE4786); - P(G, H, A, B, C, D, E, F, R(18), 0x0FC19DC6); - P(F, G, H, A, B, C, D, E, R(19), 0x240CA1CC); - P(E, F, G, H, A, B, C, D, R(20), 0x2DE92C6F); - P(D, E, F, G, H, A, B, C, R(21), 0x4A7484AA); - P(C, D, E, F, G, H, A, B, R(22), 0x5CB0A9DC); - P(B, C, D, E, F, G, H, A, R(23), 0x76F988DA); - P(A, B, C, D, E, F, G, H, R(24), 0x983E5152); - P(H, A, B, C, D, E, F, G, R(25), 0xA831C66D); - P(G, H, A, B, C, D, E, F, R(26), 0xB00327C8); - P(F, G, H, A, B, C, D, E, R(27), 0xBF597FC7); - P(E, F, G, H, A, B, C, D, R(28), 0xC6E00BF3); - P(D, E, F, G, H, A, B, C, R(29), 0xD5A79147); - P(C, D, E, F, G, H, A, B, R(30), 0x06CA6351); - P(B, C, D, E, F, G, H, A, R(31), 0x14292967); - P(A, B, C, D, E, F, G, H, R(32), 0x27B70A85); - P(H, A, B, C, D, E, F, G, R(33), 0x2E1B2138); - P(G, H, A, B, C, D, E, F, R(34), 0x4D2C6DFC); - P(F, G, H, A, B, C, D, E, R(35), 0x53380D13); - P(E, F, G, H, A, B, C, D, R(36), 0x650A7354); - P(D, E, F, G, H, A, B, C, R(37), 0x766A0ABB); - P(C, D, E, F, G, H, A, B, R(38), 0x81C2C92E); - P(B, C, D, E, F, G, H, A, R(39), 0x92722C85); - P(A, B, C, D, E, F, G, H, R(40), 0xA2BFE8A1); - P(H, A, B, C, D, E, F, G, R(41), 0xA81A664B); - P(G, H, A, B, C, D, E, F, R(42), 0xC24B8B70); - P(F, G, H, A, B, C, D, E, R(43), 0xC76C51A3); - P(E, F, G, H, A, B, C, D, R(44), 0xD192E819); - P(D, E, F, G, H, A, B, C, R(45), 0xD6990624); - P(C, D, E, F, G, H, A, B, R(46), 0xF40E3585); - P(B, C, D, E, F, G, H, A, R(47), 0x106AA070); - P(A, B, C, D, E, F, G, H, R(48), 0x19A4C116); - P(H, A, B, C, D, E, F, G, R(49), 0x1E376C08); - P(G, H, A, B, C, D, E, F, R(50), 0x2748774C); - P(F, G, H, A, B, C, D, E, R(51), 0x34B0BCB5); - P(E, F, G, H, A, B, C, D, R(52), 0x391C0CB3); - P(D, E, F, G, H, A, B, C, R(53), 0x4ED8AA4A); - P(C, D, E, F, G, H, A, B, R(54), 0x5B9CCA4F); - P(B, C, D, E, F, G, H, A, R(55), 0x682E6FF3); - P(A, B, C, D, E, F, G, H, R(56), 0x748F82EE); - P(H, A, B, C, D, E, F, G, R(57), 0x78A5636F); - P(G, H, A, B, C, D, E, F, R(58), 0x84C87814); - P(F, G, H, A, B, C, D, E, R(59), 0x8CC70208); - P(E, F, G, H, A, B, C, D, R(60), 0x90BEFFFA); - P(D, E, F, G, H, A, B, C, R(61), 0xA4506CEB); - P(C, D, E, F, G, H, A, B, R(62), 0xBEF9A3F7); - P(B, C, D, E, F, G, H, A, R(63), 0xC67178F2); - - ctx->state[0] += A; - ctx->state[1] += B; - ctx->state[2] += C; - ctx->state[3] += D; - ctx->state[4] += E; - ctx->state[5] += F; - ctx->state[6] += G; - ctx->state[7] += H; -} - -void sha256_update(context_sha256_T *ctx, char_u *input, uint32_t length) -{ - uint32_t left, fill; - - if (length == 0) { - return; - } - - left = ctx->total[0] & 0x3F; - fill = 64 - left; - - ctx->total[0] += length; - ctx->total[0] &= 0xFFFFFFFF; - - if (ctx->total[0] < length) { - ctx->total[1]++; - } - - if (left && (length >= fill)) { - memcpy((void *)(ctx->buffer + left), (void *)input, fill); - sha256_process(ctx, ctx->buffer); - length -= fill; - input += fill; - left = 0; - } - - while (length >= 64) { - sha256_process(ctx, input); - length -= 64; - input += 64; - } - - if (length) { - memcpy((void *)(ctx->buffer + left), (void *)input, length); - } -} - -static char_u sha256_padding[64] = { - 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - -void sha256_finish(context_sha256_T *ctx, char_u digest[32]) -{ - uint32_t last, padn; - uint32_t high, low; - char_u msglen[8]; - - high = (ctx->total[0] >> 29) | (ctx->total[1] << 3); - low = (ctx->total[0] << 3); - - PUT_UINT32(high, msglen, 0); - PUT_UINT32(low, msglen, 4); - - last = ctx->total[0] & 0x3F; - padn = (last < 56) ? (56 - last) : (120 - last); - - sha256_update(ctx, sha256_padding, padn); - sha256_update(ctx, msglen, 8); - - PUT_UINT32(ctx->state[0], digest, 0); - PUT_UINT32(ctx->state[1], digest, 4); - PUT_UINT32(ctx->state[2], digest, 8); - PUT_UINT32(ctx->state[3], digest, 12); - PUT_UINT32(ctx->state[4], digest, 16); - PUT_UINT32(ctx->state[5], digest, 20); - PUT_UINT32(ctx->state[6], digest, 24); - PUT_UINT32(ctx->state[7], digest, 28); -} - -static unsigned int get_some_time(void); - -/// Gets the hex digest of the buffer. -/// -/// @param buf -/// @param buf_len -/// @param salt -/// @param salt_len -/// -/// @returns hex digest of "buf[buf_len]" in a static array. -/// if "salt" is not NULL also do "salt[salt_len]". -char_u *sha256_bytes(char_u *buf, int buf_len, char_u *salt, int salt_len) -{ - char_u sha256sum[32]; - static char_u hexit[65]; - int j; - context_sha256_T ctx; - - sha256_self_test(); - - sha256_start(&ctx); - sha256_update(&ctx, buf, buf_len); - - if (salt != NULL) { - sha256_update(&ctx, salt, salt_len); - } - sha256_finish(&ctx, sha256sum); - - for (j = 0; j < 32; j++) { - sprintf((char *) hexit + j * 2, "%02x", sha256sum[j]); - } - hexit[sizeof(hexit) - 1] = '\0'; - return hexit; -} - -/// Gets sha256(buf) as 64 hex characters in a static array. -/// -/// @param buf -/// @param salt -/// @param salt_len -/// -/// @returns sha256(buf) as 64 hex chars in static array. -char_u* sha256_key(char_u *buf, char_u *salt, int salt_len) -{ - // No passwd means don't encrypt - if ((buf == NULL) || (*buf == NUL)) { - return (char_u *)""; - } - - return sha256_bytes(buf, (int)STRLEN(buf), salt, salt_len); -} - -// These are the standard FIPS-180-2 test vectors -static char *sha_self_test_msg[] = { - "abc", - "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", - NULL -}; - -static char *sha_self_test_vector[] = { - "ba7816bf8f01cfea414140de5dae2223" \ - "b00361a396177a9cb410ff61f20015ad", - "248d6a61d20638b8e5c026930c3e6039" \ - "a33ce45964ff2167f6ecedd419db06c1", - "cdc76e5c9914fb9281a1c7e284d73e67" \ - "f1809a48a497200e046d39ccc7112cd0" -}; - -/// Perform a test on the SHA256 algorithm. -/// -/// @return FAIL or OK. -int sha256_self_test(void) -{ - int i, j; - char output[65]; - context_sha256_T ctx; - char_u buf[1000]; - char_u sha256sum[32]; - static int failures = 0; - char_u *hexit; - static int sha256_self_tested = 0; - - if (sha256_self_tested > 0) { - return failures > 0 ? FAIL : OK; - } - sha256_self_tested = 1; - - for (i = 0; i < 3; i++) { - if (i < 2) { - hexit = sha256_bytes((char_u *) sha_self_test_msg[i], - (int) STRLEN(sha_self_test_msg[i]), - NULL, 0); - STRCPY(output, hexit); - } else { - sha256_start(&ctx); - memset(buf, 'a', 1000); - - for (j = 0; j < 1000; j++) { - sha256_update(&ctx, (char_u *) buf, 1000); - } - sha256_finish(&ctx, sha256sum); - - for (j = 0; j < 32; j++) { - sprintf(output + j * 2, "%02x", sha256sum[j]); - } - } - - if (memcmp(output, sha_self_test_vector[i], 64)) { - failures++; - output[sizeof(output) - 1] = '\0'; - - // printf("sha256_self_test %d failed %s\n", i, output); - } - } - return failures > 0 ? FAIL : OK; -} - -static unsigned int get_some_time(void) -{ -#ifdef HAVE_GETTIMEOFDAY - struct timeval tv; - - // Using usec makes it less predictable. - gettimeofday(&tv, NULL); - return (unsigned int) (tv.tv_sec + tv.tv_usec); - -#else // ifdef HAVE_GETTIMEOFDAY - return (unsigned int) time(NULL); - -#endif // ifdef HAVE_GETTIMEOFDAY -} - -/// Fill "header[header_len]" with random_data. -/// Also "salt[salt_len]" when "salt" is not NULL. -/// -/// @param header -/// @param header_len -/// @param salt -/// @param salt_len -void sha2_seed(char_u *header, int header_len, char_u *salt, int salt_len) -{ - static char_u random_data[1000]; - char_u sha256sum[32]; - context_sha256_T ctx; - - srand(get_some_time()); - - int i; - for (i = 0; i < (int) sizeof(random_data) - 1; i++) { - random_data[i] = (char_u) ((get_some_time() ^ rand()) & 0xff); - } - sha256_start(&ctx); - sha256_update(&ctx, (char_u *) random_data, sizeof(random_data)); - sha256_finish(&ctx, sha256sum); - - // put first block into header. - for (i = 0; i < header_len; i++) { - header[i] = sha256sum[i % sizeof(sha256sum)]; - } - - // put remaining block into salt. - if (salt != NULL) { - for (i = 0; i < salt_len; i++) { - salt[i] = sha256sum[(i + header_len) % sizeof(sha256sum)]; - } - } -} |