--- a/libpurple/ciphers/md4hash.c Thu Jun 15 10:48:26 2017 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,311 +0,0 @@
-/*
- * Original md4 taken from linux kernel
- * MD4 Message Digest Algorithm (RFC1320).
- *
- * Implementation derived from Andrew Tridgell and Steve French's
- * CIFS MD4 implementation, and the cryptoapi implementation
- * originally based on the public domain implementation written
- * by Colin Plumb in 1993.
- *
- * Copyright (c) Andrew Tridgell 1997-1998.
- * Modified by Steve French (sfrench@us.ibm.com) 2002
- * Copyright (c) Cryptoapi developers.
- * Copyright (c) 2002 David S. Miller (davem@redhat.com)
- * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
- */
-#include "internal.h"
-#include "md4hash.h"
-
-#include <string.h>
-
-#define MD4_DIGEST_SIZE 16
-#define MD4_BLOCK_WORDS 16
-#define MD4_HASH_WORDS 4
-
-#define PURPLE_MD4_HASH_GET_PRIVATE(obj) \
- (G_TYPE_INSTANCE_GET_PRIVATE((obj), PURPLE_TYPE_MD4_HASH, PurpleMD4HashPrivate))
-
-/******************************************************************************
- * Structs
- *****************************************************************************/
-typedef struct {
- guint32 hash[MD4_HASH_WORDS];
- guint32 block[MD4_BLOCK_WORDS];
- guint64 byte_count;
-} PurpleMD4HashPrivate;
-
-/******************************************************************************
- * Globals
- *****************************************************************************/
-static GObjectClass *parent_class = NULL;
-
-/******************************************************************************
- * Helpers
- *****************************************************************************/
-#define ROUND1(a,b,c,d,k,s) \
- (a = lshift(a + F(b,c,d) + k, s))
-
-#define ROUND2(a,b,c,d,k,s) \
- (a = lshift(a + G(b,c,d) + k + (guint32)0x5a827999,s))
-
-#define ROUND3(a,b,c,d,k,s) \
- (a = lshift(a + H(b,c,d) + k + (guint32)0x6ed9eba1,s))
-
-static inline guint32
-lshift(guint32 x, unsigned int s) {
- x &= 0xffffffff;
- return (((x << s) & 0xffffffff) | (x >> (32 - s)));
-}
-
-static inline guint32
-F(guint32 x, guint32 y, guint32 z) {
- return ((x & y) | ((~x) & z));
-}
-
-static inline guint32
-G(guint32 x, guint32 y, guint32 z) {
- return ((x & y) | (x & z) | (y & z));
-}
-
-static inline guint32
-H(guint32 x, guint32 y, guint32 z) {
- return (x ^ y ^ z);
-}
-
-static inline void
-le32_to_cpu_array(guint32 *buf, unsigned int words) {
- while(words--) {
- *buf = GUINT_FROM_LE(*buf);
- buf++;
- }
-}
-
-static inline void
-cpu_to_le32_array(guint32 *buf, unsigned int words) {
- while(words--) {
- *buf = GUINT_TO_LE(*buf);
- buf++;
- }
-}
-
-static void
-md4_transform(guint32 *hash, guint32 const *in) {
- guint32 a, b, c, d;
-
- a = hash[0];
- b = hash[1];
- c = hash[2];
- d = hash[3];
-
- ROUND1(a, b, c, d, in[0], 3);
- ROUND1(d, a, b, c, in[1], 7);
- ROUND1(c, d, a, b, in[2], 11);
- ROUND1(b, c, d, a, in[3], 19);
- ROUND1(a, b, c, d, in[4], 3);
- ROUND1(d, a, b, c, in[5], 7);
- ROUND1(c, d, a, b, in[6], 11);
- ROUND1(b, c, d, a, in[7], 19);
- ROUND1(a, b, c, d, in[8], 3);
- ROUND1(d, a, b, c, in[9], 7);
- ROUND1(c, d, a, b, in[10], 11);
- ROUND1(b, c, d, a, in[11], 19);
- ROUND1(a, b, c, d, in[12], 3);
- ROUND1(d, a, b, c, in[13], 7);
- ROUND1(c, d, a, b, in[14], 11);
- ROUND1(b, c, d, a, in[15], 19);
-
- ROUND2(a, b, c, d,in[ 0], 3);
- ROUND2(d, a, b, c, in[4], 5);
- ROUND2(c, d, a, b, in[8], 9);
- ROUND2(b, c, d, a, in[12], 13);
- ROUND2(a, b, c, d, in[1], 3);
- ROUND2(d, a, b, c, in[5], 5);
- ROUND2(c, d, a, b, in[9], 9);
- ROUND2(b, c, d, a, in[13], 13);
- ROUND2(a, b, c, d, in[2], 3);
- ROUND2(d, a, b, c, in[6], 5);
- ROUND2(c, d, a, b, in[10], 9);
- ROUND2(b, c, d, a, in[14], 13);
- ROUND2(a, b, c, d, in[3], 3);
- ROUND2(d, a, b, c, in[7], 5);
- ROUND2(c, d, a, b, in[11], 9);
- ROUND2(b, c, d, a, in[15], 13);
-
- ROUND3(a, b, c, d,in[ 0], 3);
- ROUND3(d, a, b, c, in[8], 9);
- ROUND3(c, d, a, b, in[4], 11);
- ROUND3(b, c, d, a, in[12], 15);
- ROUND3(a, b, c, d, in[2], 3);
- ROUND3(d, a, b, c, in[10], 9);
- ROUND3(c, d, a, b, in[6], 11);
- ROUND3(b, c, d, a, in[14], 15);
- ROUND3(a, b, c, d, in[1], 3);
- ROUND3(d, a, b, c, in[9], 9);
- ROUND3(c, d, a, b, in[5], 11);
- ROUND3(b, c, d, a, in[13], 15);
- ROUND3(a, b, c, d, in[3], 3);
- ROUND3(d, a, b, c, in[11], 9);
- ROUND3(c, d, a, b, in[7], 11);
- ROUND3(b, c, d, a, in[15], 15);
-
- hash[0] += a;
- hash[1] += b;
- hash[2] += c;
- hash[3] += d;
-}
-
-static inline void
-md4_transform_helper(PurpleHash *hash) {
- PurpleMD4HashPrivate *priv = PURPLE_MD4_HASH_GET_PRIVATE(hash);
-
- le32_to_cpu_array(priv->block, sizeof(priv->block) / sizeof(guint32));
- md4_transform(priv->hash, priv->block);
-}
-
-/******************************************************************************
- * Hash Stuff
- *****************************************************************************/
-static void
-purple_md4_hash_reset(PurpleHash *hash) {
- PurpleMD4HashPrivate *priv = PURPLE_MD4_HASH_GET_PRIVATE(hash);
-
- priv->hash[0] = 0x67452301;
- priv->hash[1] = 0xefcdab89;
- priv->hash[2] = 0x98badcfe;
- priv->hash[3] = 0x10325476;
-
- priv->byte_count = 0;
-
- memset(priv->block, 0, sizeof(priv->block));
-}
-
-static void
-purple_md4_hash_append(PurpleHash *hash, const guchar *data, size_t len) {
- PurpleMD4HashPrivate *priv = PURPLE_MD4_HASH_GET_PRIVATE(hash);
- const guint32 avail = sizeof(priv->block) - (priv->byte_count & 0x3f);
-
- priv->byte_count += len;
-
- if(avail > len) {
- memcpy((char *)priv->block +
- (sizeof(priv->block) - avail),
- data, len);
- return;
- }
-
- memcpy((char *)priv->block +
- (sizeof(priv->block) - avail),
- data, avail);
-
- md4_transform_helper(hash);
- data += avail;
- len -= avail;
-
- while(len >= sizeof(priv->block)) {
- memcpy(priv->block, data, sizeof(priv->block));
- md4_transform_helper(hash);
- data += sizeof(priv->block);
- len -= sizeof(priv->block);
- }
-
- memcpy(priv->block, data, len);
-}
-
-static gboolean
-purple_md4_hash_digest(PurpleHash *hash, guchar *out, size_t len)
-{
- PurpleMD4HashPrivate *priv = PURPLE_MD4_HASH_GET_PRIVATE(hash);
- const unsigned int offset = priv->byte_count & 0x3f;
- gchar *p = (gchar *)priv->block + offset;
- gint padding = 56 - (offset + 1);
-
- if(len < 16)
- return FALSE;
-
- *p++ = 0x80;
-
- if(padding < 0) {
- memset(p, 0x00, padding + sizeof(guint64));
- md4_transform_helper(hash);
- p = (gchar *)priv->block;
- padding = 56;
- }
-
- memset(p, 0, padding);
- priv->block[14] = priv->byte_count << 3;
- priv->block[15] = priv->byte_count >> 29;
- le32_to_cpu_array(priv->block,
- (sizeof(priv->block) - sizeof(guint64)) /
- sizeof(guint32));
- md4_transform(priv->hash, priv->block);
- cpu_to_le32_array(priv->hash, sizeof(priv->hash) / sizeof(guint32));
- memcpy(out, priv->hash, sizeof(priv->hash));
-
- return TRUE;
-}
-
-static size_t
-purple_md4_hash_get_digest_size(PurpleHash *hash)
-{
- return 16;
-}
-
-static size_t
-purple_md4_hash_get_block_size(PurpleHash *hash)
-{
- /* This does not change (in this case) */
- return 64;
-}
-
-/******************************************************************************
- * Object Stuff
- *****************************************************************************/
-static void
-purple_md4_hash_class_init(PurpleMD4HashClass *klass) {
- PurpleHashClass *hash_class = PURPLE_HASH_CLASS(klass);
-
- parent_class = g_type_class_peek_parent(klass);
-
- g_type_class_add_private(klass, sizeof(PurpleMD4HashPrivate));
-
- hash_class->reset = purple_md4_hash_reset;
- hash_class->reset_state = purple_md4_hash_reset;
- hash_class->append = purple_md4_hash_append;
- hash_class->digest = purple_md4_hash_digest;
- hash_class->get_digest_size = purple_md4_hash_get_digest_size;
- hash_class->get_block_size = purple_md4_hash_get_block_size;
-}
-
-/******************************************************************************
- * API
- *****************************************************************************/
-GType
-purple_md4_hash_get_type(void) {
- static GType type = 0;
-
- if(type == 0) {
- static const GTypeInfo info = {
- sizeof(PurpleMD4HashClass),
- NULL,
- NULL,
- (GClassInitFunc)purple_md4_hash_class_init,
- NULL,
- NULL,
- sizeof(PurpleMD4Hash),
- 0,
- (GInstanceInitFunc)purple_hash_reset,
- NULL,
- };
-
- type = g_type_register_static(PURPLE_TYPE_HASH,
- "PurpleMD4Hash",
- &info, 0);
- }
-
- return type;
-}
-
-PurpleHash *
-purple_md4_hash_new(void) {
- return g_object_new(PURPLE_TYPE_MD4_HASH, NULL);
-}