diff options
| -rw-r--r-- | src/Makefile.am | 2 | ||||
| -rw-r--r-- | src/sha1.c | 241 | ||||
| -rw-r--r-- | src/sha1.h | 57 |
3 files changed, 300 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am index 12147a5..942e7a2 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -8,6 +8,7 @@ calcurse_SOURCES = \ htable.h \ llist.h \ llist_ts.h \ + sha1.h \ apoint.c \ args.c \ calendar.c \ @@ -22,6 +23,7 @@ calcurse_SOURCES = \ note.c \ notify.c \ recur.c \ + sha1.c \ sigs.c \ todo.c \ utf8.c \ diff --git a/src/sha1.c b/src/sha1.c new file mode 100644 index 0000000..cc11dd7 --- /dev/null +++ b/src/sha1.c @@ -0,0 +1,241 @@ +/* + * Calcurse - text-based organizer + * + * Copyright (c) 2004-2011 calcurse Development Team <misc@calcurse.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the + * following disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the + * following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Send your feedback or comments to : misc@calcurse.org + * Calcurse home page : http://calcurse.org + * + * This code is based on Steve Reid's public domain SHA1 implementation. + * + * The original version is available at: + * ftp://ftp.funet.fi/pub/crypt/hash/sha/sha1.c + * + */ + +#include <stdio.h> +#include <string.h> + +#include "sha1.h" + +#define rol(val, n) (((val) << (n)) | ((val) >> (32 - (n)))) + +#ifdef WORDS_BIGENDIAN +#define blk0(i) block->l[i] +#else +#define blk0(i) (block->l[i] = (rol (block->l[i], 24) & \ + (uint32_t)0xFF00FF00) | (rol (block->l[i], 8) & (uint32_t)0x00FF00FF)) +#endif + +#define blk(i) (block->l[i & 15] = rol (block->l[(i + 13) & 15] ^ \ + block->l[(i + 8) & 15] ^ block->l[(i + 2) & 15] ^ block->l[i & 15], 1)) + +#define R0(v, w, x, y, z, i) z += ((w & (x ^ y)) ^ y) + blk0 (i) + \ + 0x5A827999 + rol (v, 5); w = rol (w, 30); +#define R1(v, w, x, y, z, i) z += ((w & (x ^ y)) ^ y) + blk (i) + \ + 0x5A827999 + rol (v, 5); w = rol (w, 30); +#define R2(v, w, x, y, z, i) z += (w ^ x ^ y) + blk (i) + 0x6ED9EBA1 + \ + rol (v, 5); w = rol(w, 30); +#define R3(v, w, x, y, z, i) z += (((w | x) & y) | (w & x)) + blk (i) + \ + 0x8F1BBCDC + rol (v, 5); w = rol (w, 30); +#define R4(v, w, x, y, z, i) z += (w ^ x ^ y) + blk (i) + 0xCA62C1D6 + \ + rol (v, 5); w = rol (w, 30); + +void +sha1_transform (uint32_t state[5], const uint8_t buffer[64]) +{ + typedef union { + uint8_t c[64]; + uint32_t l[16]; + } b64_t; + + b64_t *block = (b64_t *)buffer; + uint32_t a = state[0]; + uint32_t b = state[1]; + uint32_t c = state[2]; + uint32_t d = state[3]; + uint32_t e = state[4]; + + R0 (a, b, c, d, e, 0); R0 (e, a, b, c, d, 1); + R0 (d, e, a, b, c, 2); R0 (c, d, e, a, b, 3); + R0 (b, c, d, e, a, 4); R0 (a, b, c, d, e, 5); + R0 (e, a, b, c, d, 6); R0 (d, e, a, b, c, 7); + R0 (c, d, e, a, b, 8); R0 (b, c, d, e, a, 9); + R0 (a, b, c, d, e, 10); R0 (e, a, b, c, d, 11); + R0 (d, e, a, b, c, 12); R0 (c, d, e, a, b, 13); + R0 (b, c, d, e, a, 14); R0 (a, b, c, d, e, 15); + R1 (e, a, b, c, d, 16); R1 (d, e, a, b, c, 17); + R1 (c, d, e, a, b, 18); R1 (b, c, d, e, a, 19); + R2 (a, b, c, d, e, 20); R2 (e, a, b, c, d, 21); + R2 (d, e, a, b, c, 22); R2 (c, d, e, a, b, 23); + R2 (b, c, d, e, a, 24); R2 (a, b, c, d, e, 25); + R2 (e, a, b, c, d, 26); R2 (d, e, a, b, c, 27); + R2 (c, d, e, a, b, 28); R2 (b, c, d, e, a, 29); + R2 (a, b, c, d, e, 30); R2 (e, a, b, c, d, 31); + R2 (d, e, a, b, c, 32); R2 (c, d, e, a, b, 33); + R2 (b, c, d, e, a, 34); R2 (a, b, c, d, e, 35); + R2 (e, a, b, c, d, 36); R2 (d, e, a, b, c, 37); + R2 (c, d, e, a, b, 38); R2 (b, c, d, e, a, 39); + R3 (a, b, c, d, e, 40); R3 (e, a, b, c, d, 41); + R3 (d, e, a, b, c, 42); R3 (c, d, e, a, b, 43); + R3 (b, c, d, e, a, 44); R3 (a, b, c, d, e, 45); + R3 (e, a, b, c, d, 46); R3 (d, e, a, b, c, 47); + R3 (c, d, e, a, b, 48); R3 (b, c, d, e, a, 49); + R3 (a, b, c, d, e, 50); R3 (e, a, b, c, d, 51); + R3 (d, e, a, b, c, 52); R3 (c, d, e, a, b, 53); + R3 (b, c, d, e, a, 54); R3 (a, b, c, d, e, 55); + R3 (e, a, b, c, d, 56); R3 (d, e, a, b, c, 57); + R3 (c, d, e, a, b, 58); R3 (b, c, d, e, a, 59); + R4 (a, b, c, d, e, 60); R4 (e, a, b, c, d, 61); + R4 (d, e, a, b, c, 62); R4 (c, d, e, a, b, 63); + R4 (b, c, d, e, a, 64); R4 (a, b, c, d, e, 65); + R4 (e, a, b, c, d, 66); R4 (d, e, a, b, c, 67); + R4 (c, d, e, a, b, 68); R4 (b, c, d, e, a, 69); + R4 (a, b, c, d, e, 70); R4 (e, a, b, c, d, 71); + R4 (d, e, a, b, c, 72); R4 (c, d, e, a, b, 73); + R4 (b, c, d, e, a, 74); R4 (a, b, c, d, e, 75); + R4 (e, a, b, c, d, 76); R4 (d, e, a, b, c, 77); + R4 (c, d, e, a, b, 78); R4 (b, c, d, e, a, 79); + + state[0] += a; + state[1] += b; + state[2] += c; + state[3] += d; + state[4] += e; + + a = b = c = d = e = 0; +} + + +void +sha1_init (sha1_ctx_t *ctx) +{ + ctx->state[0] = 0x67452301; + ctx->state[1] = 0xEFCDAB89; + ctx->state[2] = 0x98BADCFE; + ctx->state[3] = 0x10325476; + ctx->state[4] = 0xC3D2E1F0; + + ctx->count[0] = ctx->count[1] = 0; +} + +void +sha1_update (sha1_ctx_t *ctx, const uint8_t *data, unsigned int len) +{ + unsigned int i, j; + + j = (ctx->count[0] >> 3) & 63; + if ((ctx->count[0] += len << 3) < (len << 3)) + ctx->count[1]++; + ctx->count[1] += (len >> 29); + + if (j + len > 63) + { + memcpy (&ctx->buffer[j], data, (i = 64 - j)); + sha1_transform (ctx->state, ctx->buffer); + for (; i + 63 < len; i += 64) + sha1_transform (ctx->state, &data[i]); + j = 0; + } + else + i = 0; + memcpy (&ctx->buffer[j], &data[i], len - i); +} + + +void +sha1_final (sha1_ctx_t *ctx, uint8_t digest[SHA1_DIGESTLEN]) +{ + uint32_t i, j; + uint8_t finalcount[8]; + + for (i = 0; i < 8; i++) + { + finalcount[i] = (uint8_t)((ctx->count[(i >= 4 ? 0 : 1)] >> + ((3 - (i & 3)) * 8)) & 255); + } + + sha1_update (ctx, (uint8_t *)"\200", 1); + while ((ctx->count[0] & 504) != 448) + sha1_update (ctx, (uint8_t *)"\0", 1); + + sha1_update (ctx, finalcount, 8); + for (i = 0; i < SHA1_DIGESTLEN; i++) + digest[i] = (uint8_t)((ctx->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255); + + i = j = 0; + memset (ctx->buffer, 0, SHA1_BLOCKLEN); + memset (ctx->state, 0, SHA1_DIGESTLEN); + memset (ctx->count, 0, 8); + memset (&finalcount, 0, 8); +} + +void +sha1_digest (const char *data, char *buffer) +{ + sha1_ctx_t ctx; + uint8_t digest[SHA1_DIGESTLEN]; + int i; + + sha1_init (&ctx); + sha1_update (&ctx, (const uint8_t *)data, strlen (data)); + sha1_final (&ctx, (uint8_t *)digest); + + for (i = 0; i < SHA1_DIGESTLEN; i++) + { + snprintf (buffer, 3, "%02x", digest[i]); + buffer += sizeof (char) * 2; + } +} + +void +sha1_stream (FILE *fp, char *buffer) +{ + sha1_ctx_t ctx; + uint8_t data[BUFSIZ]; + size_t bytes_read; + uint8_t digest[SHA1_DIGESTLEN]; + int i; + + sha1_init (&ctx); + + while (!feof (fp)) + { + bytes_read = fread (data, 1, BUFSIZ, fp); + sha1_update (&ctx, data, bytes_read); + } + + sha1_final (&ctx, (uint8_t *)digest); + + for (i = 0; i < SHA1_DIGESTLEN; i++) + { + snprintf (buffer, 3, "%02x", digest[i]); + buffer += sizeof (char) * 2; + } +} diff --git a/src/sha1.h b/src/sha1.h new file mode 100644 index 0000000..2e28bd4 --- /dev/null +++ b/src/sha1.h @@ -0,0 +1,57 @@ +/* + * Calcurse - text-based organizer + * + * Copyright (c) 2004-2011 calcurse Development Team <misc@calcurse.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the + * following disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the + * following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Send your feedback or comments to : misc@calcurse.org + * Calcurse home page : http://calcurse.org + * + * This code is based on Steve Reid's public domain SHA1 implementation. + * + * The original version is available at: + * ftp://ftp.funet.fi/pub/crypt/hash/sha/sha1.c + * + */ + +#include <stdint.h> + +#define SHA1_BLOCKLEN 64 +#define SHA1_DIGESTLEN 20 + +typedef struct { + uint32_t state[5]; + uint32_t count[2]; + uint8_t buffer[SHA1_BLOCKLEN]; +} sha1_ctx_t; + +void sha1_init (sha1_ctx_t *); +void sha1_update (sha1_ctx_t *, const uint8_t *, unsigned int); +void sha1_final (sha1_ctx_t *, uint8_t *); +void sha1_digest (const char *, char *); +void sha1_stream (FILE *, char *); |