--- a/libpurple/ciphers/sha1.c Thu Aug 23 01:27:48 2012 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,281 +0,0 @@
-/*
- * purple
- *
- * Purple is the legal property of its developers, whose names are too numerous
- * to list here. Please refer to the COPYRIGHT file distributed with this
- * source distribution.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
- */
-#include <cipher.h>
-#include <util.h>
-
-#if !GLIB_CHECK_VERSION(2,16,0)
-
-#define SHA1_HMAC_BLOCK_SIZE 64
-#define SHA1_ROTL(X,n) ((((X) << (n)) | ((X) >> (32-(n)))) & 0xFFFFFFFF)
-
-struct SHA1Context {
- guint32 H[5];
- guint32 W[80];
-
- gint lenW;
-
- guint32 sizeHi;
- guint32 sizeLo;
-};
-
-static size_t
-sha1_get_block_size(PurpleCipherContext *context)
-{
- /* This does not change (in this case) */
- return SHA1_HMAC_BLOCK_SIZE;
-}
-
-static void
-sha1_hash_block(struct SHA1Context *sha1_ctx) {
- gint i;
- guint32 A, B, C, D, E, T;
-
- for(i = 16; i < 80; i++) {
- sha1_ctx->W[i] = SHA1_ROTL(sha1_ctx->W[i - 3] ^
- sha1_ctx->W[i - 8] ^
- sha1_ctx->W[i - 14] ^
- sha1_ctx->W[i - 16], 1);
- }
-
- A = sha1_ctx->H[0];
- B = sha1_ctx->H[1];
- C = sha1_ctx->H[2];
- D = sha1_ctx->H[3];
- E = sha1_ctx->H[4];
-
- for(i = 0; i < 20; i++) {
- T = (SHA1_ROTL(A, 5) + (((C ^ D) & B) ^ D) + E + sha1_ctx->W[i] + 0x5A827999) & 0xFFFFFFFF;
- E = D;
- D = C;
- C = SHA1_ROTL(B, 30);
- B = A;
- A = T;
- }
-
- for(i = 20; i < 40; i++) {
- T = (SHA1_ROTL(A, 5) + (B ^ C ^ D) + E + sha1_ctx->W[i] + 0x6ED9EBA1) & 0xFFFFFFFF;
- E = D;
- D = C;
- C = SHA1_ROTL(B, 30);
- B = A;
- A = T;
- }
-
- for(i = 40; i < 60; i++) {
- T = (SHA1_ROTL(A, 5) + ((B & C) | (D & (B | C))) + E + sha1_ctx->W[i] + 0x8F1BBCDC) & 0xFFFFFFFF;
- E = D;
- D = C;
- C = SHA1_ROTL(B, 30);
- B = A;
- A = T;
- }
-
- for(i = 60; i < 80; i++) {
- T = (SHA1_ROTL(A, 5) + (B ^ C ^ D) + E + sha1_ctx->W[i] + 0xCA62C1D6) & 0xFFFFFFFF;
- E = D;
- D = C;
- C = SHA1_ROTL(B, 30);
- B = A;
- A = T;
- }
-
- sha1_ctx->H[0] += A;
- sha1_ctx->H[1] += B;
- sha1_ctx->H[2] += C;
- sha1_ctx->H[3] += D;
- sha1_ctx->H[4] += E;
-}
-
-static void
-sha1_set_opt(PurpleCipherContext *context, const gchar *name, void *value) {
- struct SHA1Context *ctx;
-
- ctx = purple_cipher_context_get_data(context);
-
- if(purple_strequal(name, "sizeHi")) {
- ctx->sizeHi = GPOINTER_TO_INT(value);
- } else if(purple_strequal(name, "sizeLo")) {
- ctx->sizeLo = GPOINTER_TO_INT(value);
- } else if(purple_strequal(name, "lenW")) {
- ctx->lenW = GPOINTER_TO_INT(value);
- }
-}
-
-static void *
-sha1_get_opt(PurpleCipherContext *context, const gchar *name) {
- struct SHA1Context *ctx;
-
- ctx = purple_cipher_context_get_data(context);
-
- if(purple_strequal(name, "sizeHi")) {
- return GINT_TO_POINTER(ctx->sizeHi);
- } else if(purple_strequal(name, "sizeLo")) {
- return GINT_TO_POINTER(ctx->sizeLo);
- } else if(purple_strequal(name, "lenW")) {
- return GINT_TO_POINTER(ctx->lenW);
- }
-
- return NULL;
-}
-
-static void
-sha1_init(PurpleCipherContext *context, void *extra) {
- struct SHA1Context *sha1_ctx;
-
- sha1_ctx = g_new0(struct SHA1Context, 1);
-
- purple_cipher_context_set_data(context, sha1_ctx);
-
- purple_cipher_context_reset(context, extra);
-}
-
-static void
-sha1_reset(PurpleCipherContext *context, void *extra) {
- struct SHA1Context *sha1_ctx;
- gint i;
-
- sha1_ctx = purple_cipher_context_get_data(context);
-
- g_return_if_fail(sha1_ctx);
-
- sha1_ctx->lenW = 0;
- sha1_ctx->sizeHi = 0;
- sha1_ctx->sizeLo = 0;
-
- sha1_ctx->H[0] = 0x67452301;
- sha1_ctx->H[1] = 0xEFCDAB89;
- sha1_ctx->H[2] = 0x98BADCFE;
- sha1_ctx->H[3] = 0x10325476;
- sha1_ctx->H[4] = 0xC3D2E1F0;
-
- for(i = 0; i < 80; i++)
- sha1_ctx->W[i] = 0;
-}
-
-static void
-sha1_uninit(PurpleCipherContext *context) {
- struct SHA1Context *sha1_ctx;
-
- purple_cipher_context_reset(context, NULL);
-
- sha1_ctx = purple_cipher_context_get_data(context);
-
- memset(sha1_ctx, 0, sizeof(struct SHA1Context));
-
- g_free(sha1_ctx);
- sha1_ctx = NULL;
-}
-
-static void
-sha1_append(PurpleCipherContext *context, const guchar *data, size_t len) {
- struct SHA1Context *sha1_ctx;
- gint i;
-
- sha1_ctx = purple_cipher_context_get_data(context);
-
- g_return_if_fail(sha1_ctx);
-
- for(i = 0; i < len; i++) {
- sha1_ctx->W[sha1_ctx->lenW / 4] <<= 8;
- sha1_ctx->W[sha1_ctx->lenW / 4] |= data[i];
-
- if((++sha1_ctx->lenW) % 64 == 0) {
- sha1_hash_block(sha1_ctx);
- sha1_ctx->lenW = 0;
- }
-
- sha1_ctx->sizeLo += 8;
- sha1_ctx->sizeHi += (sha1_ctx->sizeLo < 8);
- }
-}
-
-static gboolean
-sha1_digest(PurpleCipherContext *context, size_t in_len, guchar digest[20],
- size_t *out_len)
-{
- struct SHA1Context *sha1_ctx;
- guchar pad0x80 = 0x80, pad0x00 = 0x00;
- guchar padlen[8];
- gint i;
-
- g_return_val_if_fail(in_len >= 20, FALSE);
-
- sha1_ctx = purple_cipher_context_get_data(context);
-
- g_return_val_if_fail(sha1_ctx, FALSE);
-
- padlen[0] = (guchar)((sha1_ctx->sizeHi >> 24) & 255);
- padlen[1] = (guchar)((sha1_ctx->sizeHi >> 16) & 255);
- padlen[2] = (guchar)((sha1_ctx->sizeHi >> 8) & 255);
- padlen[3] = (guchar)((sha1_ctx->sizeHi >> 0) & 255);
- padlen[4] = (guchar)((sha1_ctx->sizeLo >> 24) & 255);
- padlen[5] = (guchar)((sha1_ctx->sizeLo >> 16) & 255);
- padlen[6] = (guchar)((sha1_ctx->sizeLo >> 8) & 255);
- padlen[7] = (guchar)((sha1_ctx->sizeLo >> 0) & 255);
-
- /* pad with a 1, then zeroes, then length */
- purple_cipher_context_append(context, &pad0x80, 1);
- while(sha1_ctx->lenW != 56)
- purple_cipher_context_append(context, &pad0x00, 1);
- purple_cipher_context_append(context, padlen, 8);
-
- for(i = 0; i < 20; i++) {
- digest[i] = (guchar)(sha1_ctx->H[i / 4] >> 24);
- sha1_ctx->H[i / 4] <<= 8;
- }
-
- purple_cipher_context_reset(context, NULL);
-
- if(out_len)
- *out_len = 20;
-
- return TRUE;
-}
-
-static PurpleCipherOps SHA1Ops = {
- sha1_set_opt, /* Set Option */
- sha1_get_opt, /* Get Option */
- sha1_init, /* init */
- sha1_reset, /* reset */
- sha1_uninit, /* uninit */
- NULL, /* set iv */
- sha1_append, /* append */
- sha1_digest, /* digest */
- NULL, /* encrypt */
- NULL, /* decrypt */
- NULL, /* set salt */
- NULL, /* get salt size */
- NULL, /* set key */
- NULL, /* get key size */
- NULL, /* set batch mode */
- NULL, /* get batch mode */
- sha1_get_block_size, /* get block size */
- NULL /* set key with len */
-};
-
-PurpleCipherOps *
-purple_sha1_cipher_get_ops(void) {
- return &SHA1Ops;
-}
-
-#endif /* !GLIB_CHECK_VERSION(2,16,0) */
-