broke des and des3 out to ciphers/des.c

3 files changed, 829 insertions, 804 deletions

diff --git a/libpurple/cipher.c b/libpurple/cipher.c
index 9db1b65455..601602630d 100644
--- a/libpurple/cipher.c
+++ b/libpurple/cipher.c
@@ -120,808 +120,6 @@ purple_g_checksum_digest(PurpleCipherContext *context, GChecksumType type,
 }
 #endif
 
-/******************************************************************************
- * DES
- *****************************************************************************/
-
-typedef struct _des_ctx
-{
-	guint32 encrypt_subkeys[32];
-	guint32 decrypt_subkeys[32];
-} des_ctx[1];
-
-/*
- *  The s-box values are permuted according to the 'primitive function P'
- */
-static const guint32 sbox1[64] =
-{
-	0x00808200, 0x00000000, 0x00008000, 0x00808202, 0x00808002, 0x00008202, 0x00000002, 0x00008000,
-	0x00000200, 0x00808200, 0x00808202, 0x00000200, 0x00800202, 0x00808002, 0x00800000, 0x00000002,
-	0x00000202, 0x00800200, 0x00800200, 0x00008200, 0x00008200, 0x00808000, 0x00808000, 0x00800202,
-	0x00008002, 0x00800002, 0x00800002, 0x00008002, 0x00000000, 0x00000202, 0x00008202, 0x00800000,
-	0x00008000, 0x00808202, 0x00000002, 0x00808000, 0x00808200, 0x00800000, 0x00800000, 0x00000200,
-	0x00808002, 0x00008000, 0x00008200, 0x00800002, 0x00000200, 0x00000002, 0x00800202, 0x00008202,
-	0x00808202, 0x00008002, 0x00808000, 0x00800202, 0x00800002, 0x00000202, 0x00008202, 0x00808200,
-	0x00000202, 0x00800200, 0x00800200, 0x00000000, 0x00008002, 0x00008200, 0x00000000, 0x00808002
-};
-
-static const guint32 sbox2[64] =
-{
-	0x40084010, 0x40004000, 0x00004000, 0x00084010, 0x00080000, 0x00000010, 0x40080010, 0x40004010,
-	0x40000010, 0x40084010, 0x40084000, 0x40000000, 0x40004000, 0x00080000, 0x00000010, 0x40080010,
-	0x00084000, 0x00080010, 0x40004010, 0x00000000, 0x40000000, 0x00004000, 0x00084010, 0x40080000,
-	0x00080010, 0x40000010, 0x00000000, 0x00084000, 0x00004010, 0x40084000, 0x40080000, 0x00004010,
-	0x00000000, 0x00084010, 0x40080010, 0x00080000, 0x40004010, 0x40080000, 0x40084000, 0x00004000,
-	0x40080000, 0x40004000, 0x00000010, 0x40084010, 0x00084010, 0x00000010, 0x00004000, 0x40000000,
-	0x00004010, 0x40084000, 0x00080000, 0x40000010, 0x00080010, 0x40004010, 0x40000010, 0x00080010,
-	0x00084000, 0x00000000, 0x40004000, 0x00004010, 0x40000000, 0x40080010, 0x40084010, 0x00084000
-};
-
-static const guint32 sbox3[64] =
-{
-	0x00000104, 0x04010100, 0x00000000, 0x04010004, 0x04000100, 0x00000000, 0x00010104, 0x04000100,
-	0x00010004, 0x04000004, 0x04000004, 0x00010000, 0x04010104, 0x00010004, 0x04010000, 0x00000104,
-	0x04000000, 0x00000004, 0x04010100, 0x00000100, 0x00010100, 0x04010000, 0x04010004, 0x00010104,
-	0x04000104, 0x00010100, 0x00010000, 0x04000104, 0x00000004, 0x04010104, 0x00000100, 0x04000000,
-	0x04010100, 0x04000000, 0x00010004, 0x00000104, 0x00010000, 0x04010100, 0x04000100, 0x00000000,
-	0x00000100, 0x00010004, 0x04010104, 0x04000100, 0x04000004, 0x00000100, 0x00000000, 0x04010004,
-	0x04000104, 0x00010000, 0x04000000, 0x04010104, 0x00000004, 0x00010104, 0x00010100, 0x04000004,
-	0x04010000, 0x04000104, 0x00000104, 0x04010000, 0x00010104, 0x00000004, 0x04010004, 0x00010100
-};
-
-static const guint32 sbox4[64] =
-{
-	0x80401000, 0x80001040, 0x80001040, 0x00000040, 0x00401040, 0x80400040, 0x80400000, 0x80001000,
-	0x00000000, 0x00401000, 0x00401000, 0x80401040, 0x80000040, 0x00000000, 0x00400040, 0x80400000,
-	0x80000000, 0x00001000, 0x00400000, 0x80401000, 0x00000040, 0x00400000, 0x80001000, 0x00001040,
-	0x80400040, 0x80000000, 0x00001040, 0x00400040, 0x00001000, 0x00401040, 0x80401040, 0x80000040,
-	0x00400040, 0x80400000, 0x00401000, 0x80401040, 0x80000040, 0x00000000, 0x00000000, 0x00401000,
-	0x00001040, 0x00400040, 0x80400040, 0x80000000, 0x80401000, 0x80001040, 0x80001040, 0x00000040,
-	0x80401040, 0x80000040, 0x80000000, 0x00001000, 0x80400000, 0x80001000, 0x00401040, 0x80400040,
-	0x80001000, 0x00001040, 0x00400000, 0x80401000, 0x00000040, 0x00400000, 0x00001000, 0x00401040
-};
-
-static const guint32 sbox5[64] =
-{
-	0x00000080, 0x01040080, 0x01040000, 0x21000080, 0x00040000, 0x00000080, 0x20000000, 0x01040000,
-	0x20040080, 0x00040000, 0x01000080, 0x20040080, 0x21000080, 0x21040000, 0x00040080, 0x20000000,
-	0x01000000, 0x20040000, 0x20040000, 0x00000000, 0x20000080, 0x21040080, 0x21040080, 0x01000080,
-	0x21040000, 0x20000080, 0x00000000, 0x21000000, 0x01040080, 0x01000000, 0x21000000, 0x00040080,
-	0x00040000, 0x21000080, 0x00000080, 0x01000000, 0x20000000, 0x01040000, 0x21000080, 0x20040080,
-	0x01000080, 0x20000000, 0x21040000, 0x01040080, 0x20040080, 0x00000080, 0x01000000, 0x21040000,
-	0x21040080, 0x00040080, 0x21000000, 0x21040080, 0x01040000, 0x00000000, 0x20040000, 0x21000000,
-	0x00040080, 0x01000080, 0x20000080, 0x00040000, 0x00000000, 0x20040000, 0x01040080, 0x20000080
-};
-
-static const guint32 sbox6[64] =
-{
-	0x10000008, 0x10200000, 0x00002000, 0x10202008, 0x10200000, 0x00000008, 0x10202008, 0x00200000,
-	0x10002000, 0x00202008, 0x00200000, 0x10000008, 0x00200008, 0x10002000, 0x10000000, 0x00002008,
-	0x00000000, 0x00200008, 0x10002008, 0x00002000, 0x00202000, 0x10002008, 0x00000008, 0x10200008,
-	0x10200008, 0x00000000, 0x00202008, 0x10202000, 0x00002008, 0x00202000, 0x10202000, 0x10000000,
-	0x10002000, 0x00000008, 0x10200008, 0x00202000, 0x10202008, 0x00200000, 0x00002008, 0x10000008,
-	0x00200000, 0x10002000, 0x10000000, 0x00002008, 0x10000008, 0x10202008, 0x00202000, 0x10200000,
-	0x00202008, 0x10202000, 0x00000000, 0x10200008, 0x00000008, 0x00002000, 0x10200000, 0x00202008,
-	0x00002000, 0x00200008, 0x10002008, 0x00000000, 0x10202000, 0x10000000, 0x00200008, 0x10002008
-};
-
-static const guint32 sbox7[64] =
-{
-	0x00100000, 0x02100001, 0x02000401, 0x00000000, 0x00000400, 0x02000401, 0x00100401, 0x02100400,
-	0x02100401, 0x00100000, 0x00000000, 0x02000001, 0x00000001, 0x02000000, 0x02100001, 0x00000401,
-	0x02000400, 0x00100401, 0x00100001, 0x02000400, 0x02000001, 0x02100000, 0x02100400, 0x00100001,
-	0x02100000, 0x00000400, 0x00000401, 0x02100401, 0x00100400, 0x00000001, 0x02000000, 0x00100400,
-	0x02000000, 0x00100400, 0x00100000, 0x02000401, 0x02000401, 0x02100001, 0x02100001, 0x00000001,
-	0x00100001, 0x02000000, 0x02000400, 0x00100000, 0x02100400, 0x00000401, 0x00100401, 0x02100400,
-	0x00000401, 0x02000001, 0x02100401, 0x02100000, 0x00100400, 0x00000000, 0x00000001, 0x02100401,
-	0x00000000, 0x00100401, 0x02100000, 0x00000400, 0x02000001, 0x02000400, 0x00000400, 0x00100001
-};
-
-static const guint32 sbox8[64] =
-{
-	0x08000820, 0x00000800, 0x00020000, 0x08020820, 0x08000000, 0x08000820, 0x00000020, 0x08000000,
-	0x00020020, 0x08020000, 0x08020820, 0x00020800, 0x08020800, 0x00020820, 0x00000800, 0x00000020,
-	0x08020000, 0x08000020, 0x08000800, 0x00000820, 0x00020800, 0x00020020, 0x08020020, 0x08020800,
-	0x00000820, 0x00000000, 0x00000000, 0x08020020, 0x08000020, 0x08000800, 0x00020820, 0x00020000,
-	0x00020820, 0x00020000, 0x08020800, 0x00000800, 0x00000020, 0x08020020, 0x00000800, 0x00020820,
-	0x08000800, 0x00000020, 0x08000020, 0x08020000, 0x08020020, 0x08000000, 0x00020000, 0x08000820,
-	0x00000000, 0x08020820, 0x00020020, 0x08000020, 0x08020000, 0x08000800, 0x08000820, 0x00000000,
-	0x08020820, 0x00020800, 0x00020800, 0x00000820, 0x00000820, 0x00020020, 0x08000000, 0x08020800
-};
-
-
-
-/*
- *  * These two tables are part of the 'permuted choice 1' function.
- *   * In this implementation several speed improvements are done.
- *    */
-static const guint32 leftkey_swap[16] =
-{
-	0x00000000, 0x00000001, 0x00000100, 0x00000101,
-	0x00010000, 0x00010001, 0x00010100, 0x00010101,
-	0x01000000, 0x01000001, 0x01000100, 0x01000101,
-	0x01010000, 0x01010001, 0x01010100, 0x01010101
-};
-
-static const guint32 rightkey_swap[16] =
-{
-	0x00000000, 0x01000000, 0x00010000, 0x01010000,
-	0x00000100, 0x01000100, 0x00010100, 0x01010100,
-	0x00000001, 0x01000001, 0x00010001, 0x01010001,
-	0x00000101, 0x01000101, 0x00010101, 0x01010101,
-};
-
-
-
-/*
- *  Numbers of left shifts per round for encryption subkey schedule
- *  To calculate the decryption key scheduling we just reverse the
- *  ordering of the subkeys so we can omit the table for decryption
- *  subkey schedule.
- */
-static const guint8 encrypt_rotate_tab[16] =
-{
-	1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
-};
-
-/*
- *  Macro to swap bits across two words
- **/
-#define DO_PERMUTATION(a, temp, b, offset, mask)	\
-	temp = ((a>>offset) ^ b) & mask;			\
-b ^= temp;						\
-a ^= temp<<offset;
-
-
-/*
- *  This performs the 'initial permutation' for the data to be encrypted or decrypted
- **/
-#define INITIAL_PERMUTATION(left, temp, right)		\
-	DO_PERMUTATION(left, temp, right, 4, 0x0f0f0f0f)	\
-DO_PERMUTATION(left, temp, right, 16, 0x0000ffff)	\
-DO_PERMUTATION(right, temp, left, 2, 0x33333333)	\
-DO_PERMUTATION(right, temp, left, 8, 0x00ff00ff)	\
-DO_PERMUTATION(left, temp, right, 1, 0x55555555)
-
-
-/*
- * The 'inverse initial permutation'
- **/
-#define FINAL_PERMUTATION(left, temp, right)		\
-	DO_PERMUTATION(left, temp, right, 1, 0x55555555)	\
-DO_PERMUTATION(right, temp, left, 8, 0x00ff00ff)	\
-DO_PERMUTATION(right, temp, left, 2, 0x33333333)	\
-DO_PERMUTATION(left, temp, right, 16, 0x0000ffff)	\
-DO_PERMUTATION(left, temp, right, 4, 0x0f0f0f0f)
-
-
-/*
- * A full DES round including 'expansion function', 'sbox substitution'
- * and 'primitive function P' but without swapping the left and right word.
- **/
-#define DES_ROUND(from, to, work, subkey)		\
-	work = ((from<<1) | (from>>31)) ^ *subkey++;	\
-to ^= sbox8[  work	    & 0x3f ];			\
-to ^= sbox6[ (work>>8)  & 0x3f ];			\
-to ^= sbox4[ (work>>16) & 0x3f ];			\
-to ^= sbox2[ (work>>24) & 0x3f ];			\
-work = ((from>>3) | (from<<29)) ^ *subkey++;	\
-to ^= sbox7[  work	    & 0x3f ];			\
-to ^= sbox5[ (work>>8)  & 0x3f ];			\
-to ^= sbox3[ (work>>16) & 0x3f ];			\
-to ^= sbox1[ (work>>24) & 0x3f ];
-
-
-/*
- * Macros to convert 8 bytes from/to 32bit words
- **/
-#define READ_64BIT_DATA(data, left, right)					\
-	left  = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3];	\
-right = (data[4] << 24) | (data[5] << 16) | (data[6] << 8) | data[7];
-
-#define WRITE_64BIT_DATA(data, left, right)					\
-	data[0] = (left >> 24) &0xff; data[1] = (left >> 16) &0xff; 		\
-data[2] = (left >> 8) &0xff; data[3] = left &0xff;				\
-data[4] = (right >> 24) &0xff; data[5] = (right >> 16) &0xff;		\
-data[6] = (right >> 8) &0xff; data[7] = right &0xff;
-
-
-
-
-
-
-/*
- * des_key_schedule():	  Calculate 16 subkeys pairs (even/odd) for
- *			  16 encryption rounds.
- *			  To calculate subkeys for decryption the caller
- *    			  have to reorder the generated subkeys.
- *
- *        rawkey:	    8 Bytes of key data
- *        subkey:	    Array of at least 32 guint32s. Will be filled
- *    		    with calculated subkeys.
- *
- **/
-static void
-des_key_schedule (const guint8 * rawkey, guint32 * subkey)
-{
-	guint32 left, right, work;
-	int round;
-
-	READ_64BIT_DATA (rawkey, left, right)
-
-		DO_PERMUTATION (right, work, left, 4, 0x0f0f0f0f)
-		DO_PERMUTATION (right, work, left, 0, 0x10101010)
-
-		left = (leftkey_swap[(left >> 0) & 0xf] << 3) | (leftkey_swap[(left >> 8) & 0xf] << 2)
-		| (leftkey_swap[(left >> 16) & 0xf] << 1) | (leftkey_swap[(left >> 24) & 0xf])
-		| (leftkey_swap[(left >> 5) & 0xf] << 7) | (leftkey_swap[(left >> 13) & 0xf] << 6)
-		| (leftkey_swap[(left >> 21) & 0xf] << 5) | (leftkey_swap[(left >> 29) & 0xf] << 4);
-
-	left &= 0x0fffffff;
-
-	right = (rightkey_swap[(right >> 1) & 0xf] << 3) | (rightkey_swap[(right >> 9) & 0xf] << 2)
-		| (rightkey_swap[(right >> 17) & 0xf] << 1) | (rightkey_swap[(right >> 25) & 0xf])
-		| (rightkey_swap[(right >> 4) & 0xf] << 7) | (rightkey_swap[(right >> 12) & 0xf] << 6)
-		| (rightkey_swap[(right >> 20) & 0xf] << 5) | (rightkey_swap[(right >> 28) & 0xf] << 4);
-
-	right &= 0x0fffffff;
-
-	for (round = 0; round < 16; ++round)
-	{
-		left = ((left << encrypt_rotate_tab[round]) | (left >> (28 - encrypt_rotate_tab[round]))) & 0x0fffffff;
-		right = ((right << encrypt_rotate_tab[round]) | (right >> (28 - encrypt_rotate_tab[round]))) & 0x0fffffff;
-
-		*subkey++ = ((left << 4) & 0x24000000)
-			| ((left << 28) & 0x10000000)
-			| ((left << 14) & 0x08000000)
-			| ((left << 18) & 0x02080000)
-			| ((left << 6) & 0x01000000)
-			| ((left << 9) & 0x00200000)
-			| ((left >> 1) & 0x00100000)
-			| ((left << 10) & 0x00040000)
-			| ((left << 2) & 0x00020000)
-			| ((left >> 10) & 0x00010000)
-			| ((right >> 13) & 0x00002000)
-			| ((right >> 4) & 0x00001000)
-			| ((right << 6) & 0x00000800)
-			| ((right >> 1) & 0x00000400)
-			| ((right >> 14) & 0x00000200)
-			| (right & 0x00000100)
-			| ((right >> 5) & 0x00000020)
-			| ((right >> 10) & 0x00000010)
-			| ((right >> 3) & 0x00000008)
-			| ((right >> 18) & 0x00000004)
-			| ((right >> 26) & 0x00000002)
-			| ((right >> 24) & 0x00000001);
-
-		*subkey++ = ((left << 15) & 0x20000000)
-			| ((left << 17) & 0x10000000)
-			| ((left << 10) & 0x08000000)
-			| ((left << 22) & 0x04000000)
-			| ((left >> 2) & 0x02000000)
-			| ((left << 1) & 0x01000000)
-			| ((left << 16) & 0x00200000)
-			| ((left << 11) & 0x00100000)
-			| ((left << 3) & 0x00080000)
-			| ((left >> 6) & 0x00040000)
-			| ((left << 15) & 0x00020000)
-			| ((left >> 4) & 0x00010000)
-			| ((right >> 2) & 0x00002000)
-			| ((right << 8) & 0x00001000)
-			| ((right >> 14) & 0x00000808)
-			| ((right >> 9) & 0x00000400)
-			| ((right) & 0x00000200)
-			| ((right << 7) & 0x00000100)
-			| ((right >> 7) & 0x00000020)
-			| ((right >> 3) & 0x00000011)
-			| ((right << 2) & 0x00000004)
-			| ((right >> 21) & 0x00000002);
-	}
-}
-
-
-
-/*
- *  Fill a DES context with subkeys calculated from a 64bit key.
- *  Does not check parity bits, but simply ignore them.
- *  Does not check for weak keys.
- **/
-static void
-des_set_key (PurpleCipherContext *context, const guchar * key)
-{
-	struct _des_ctx *ctx = purple_cipher_context_get_data(context);
-	int i;
-
-	des_key_schedule (key, ctx->encrypt_subkeys);
-
-	for(i=0; i<32; i+=2)
-	{
-		ctx->decrypt_subkeys[i]	= ctx->encrypt_subkeys[30-i];
-		ctx->decrypt_subkeys[i+1] = ctx->encrypt_subkeys[31-i];
-	}
-}
-
-
-
-/*
- *  Electronic Codebook Mode DES encryption/decryption of data according
- *  to 'mode'.
- **/
-static int
-des_ecb_crypt (struct _des_ctx *ctx, const guint8 * from, guint8 * to, int mode)
-{
-	guint32 left, right, work;
-	guint32 *keys;
-
-	keys = mode ? ctx->decrypt_subkeys : ctx->encrypt_subkeys;
-
-	READ_64BIT_DATA (from, left, right)
-		INITIAL_PERMUTATION (left, work, right)
-
-		DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
-		DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
-		DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
-		DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
-		DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
-		DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
-		DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
-		DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
-
-		FINAL_PERMUTATION (right, work, left)
-		WRITE_64BIT_DATA (to, right, left)
-
-		return 0;
-}
-
-static gint
-des_encrypt(PurpleCipherContext *context, const guchar data[],
-	    size_t len, guchar output[], size_t *outlen) {
-	int offset = 0;
-	int i = 0;
-	int tmp;
-	guint8 buf[8] = {0,0,0,0,0,0,0,0};
-	while(offset+8<=len) {
-		des_ecb_crypt(purple_cipher_context_get_data(context),
-				data+offset,
-				output+offset,
-				0);
-		offset+=8;
-	}
-	*outlen = len;
-	if(offset<len) {
-		*outlen += len - offset;
-		tmp = offset;
-		while(tmp<len) {
-			buf[i++] = data[tmp];
-			tmp++;
-		}
-		des_ecb_crypt(purple_cipher_context_get_data(context),
-				buf,
-				output+offset,
-				0);
-	}
-	return 0;
-}
-
-static gint
-des_decrypt(PurpleCipherContext *context, const guchar data[],
-	    size_t len, guchar output[], size_t *outlen) {
-	int offset = 0;
-	int i = 0;
-	int tmp;
-	guint8 buf[8] = {0,0,0,0,0,0,0,0};
-	while(offset+8<=len) {
-		des_ecb_crypt(purple_cipher_context_get_data(context),
-				data+offset,
-				output+offset,
-				1);
-		offset+=8;
-	}
-	*outlen = len;
-	if(offset<len) {
-		*outlen += len - offset;
-		tmp = offset;
-		while(tmp<len) {
-			buf[i++] = data[tmp];
-			tmp++;
-		}
-		des_ecb_crypt(purple_cipher_context_get_data(context),
-				buf,
-				output+offset,
-				1);
-	}
-	return 0;
-}
-
-static void
-des_init(PurpleCipherContext *context, gpointer extra) {
-	struct _des_ctx *mctx;
-	mctx = g_new0(struct _des_ctx, 1);
-	purple_cipher_context_set_data(context, mctx);
-}
-
-static void
-des_uninit(PurpleCipherContext *context) {
-	struct _des_ctx *des_context;
-
-	des_context = purple_cipher_context_get_data(context);
-	memset(des_context, 0, sizeof(*des_context));
-
-	g_free(des_context);
-	des_context = NULL;
-}
-
-static PurpleCipherOps DESOps = {
-	NULL,              /* Set option */
-	NULL,              /* Get option */
-	des_init,          /* init */
- 	NULL,              /* reset */
-	des_uninit,        /* uninit */
-	NULL,              /* set iv */
-	NULL,              /* append */
-	NULL,              /* digest */
-	des_encrypt,       /* encrypt */
-	des_decrypt,       /* decrypt */
-	NULL,              /* set salt */
-	NULL,              /* get salt size */
-	des_set_key,       /* set key */
-	NULL,              /* get key size */
-	NULL,              /* set batch mode */
-	NULL,              /* get batch mode */
-	NULL,              /* get block size */
-	NULL               /* set key with len */
-};
-
-/******************************************************************************
- * Triple-DES
- *****************************************************************************/
-
-typedef struct _des3_ctx
-{
-	PurpleCipherBatchMode mode;
-	guchar iv[8];
-	/* First key for encryption */
-	struct _des_ctx key1;
-	/* Second key for decryption */
-	struct _des_ctx key2;
-	/* Third key for encryption */
-	struct _des_ctx key3;
-} des3_ctx[1];
-
-/*
- *  Fill a DES3 context with subkeys calculated from 3 64bit key.
- *  Does not check parity bits, but simply ignore them.
- *  Does not check for weak keys.
- **/
-static void
-des3_set_key(PurpleCipherContext *context, const guchar * key)
-{
-	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
-	int i;
-
-	des_key_schedule (key +  0, ctx->key1.encrypt_subkeys);
-	des_key_schedule (key +  8, ctx->key2.encrypt_subkeys);
-	des_key_schedule (key + 16, ctx->key3.encrypt_subkeys);
-
-	for (i = 0; i < 32; i += 2)
-	{
-		ctx->key1.decrypt_subkeys[i]	= ctx->key1.encrypt_subkeys[30-i];
-		ctx->key1.decrypt_subkeys[i+1]	= ctx->key1.encrypt_subkeys[31-i];
-		ctx->key2.decrypt_subkeys[i]	= ctx->key2.encrypt_subkeys[30-i];
-		ctx->key2.decrypt_subkeys[i+1]	= ctx->key2.encrypt_subkeys[31-i];
-		ctx->key3.decrypt_subkeys[i]	= ctx->key3.encrypt_subkeys[30-i];
-		ctx->key3.decrypt_subkeys[i+1]	= ctx->key3.encrypt_subkeys[31-i];
-	}
-}
-
-static gint
-des3_ecb_encrypt(struct _des3_ctx *ctx, const guchar data[],
-                 size_t len, guchar output[], size_t *outlen)
-{
-	int offset = 0;
-	int i = 0;
-	int tmp;
-	guint8 buf[8] = {0,0,0,0,0,0,0,0};
-	while (offset + 8 <= len) {
-		des_ecb_crypt(&ctx->key1,
-		              data+offset,
-		              output+offset,
-		              0);
-		des_ecb_crypt(&ctx->key2,
-		              output+offset,
-		              buf,
-		              1);
-		des_ecb_crypt(&ctx->key3,
-		              buf,
-		              output+offset,
-		              0);
-		offset += 8;
-	}
-	*outlen = len;
-	if (offset < len) {
-		*outlen += len - offset;
-		tmp = offset;
-		memset(buf, 0, 8);
-		while (tmp < len) {
-			buf[i++] = data[tmp];
-			tmp++;
-		}
-		des_ecb_crypt(&ctx->key1,
-		              buf,
-		              output+offset,
-		              0);
-		des_ecb_crypt(&ctx->key2,
-		              output+offset,
-		              buf,
-		              1);
-		des_ecb_crypt(&ctx->key3,
-		              buf,
-		              output+offset,
-		              0);
-	}
-	return 0;
-}
-
-static gint
-des3_cbc_encrypt(struct _des3_ctx *ctx, const guchar data[],
-                 size_t len, guchar output[], size_t *outlen)
-{
-	int offset = 0;
-	int i = 0;
-	int tmp;
-	guint8 buf[8];
-	memcpy(buf, ctx->iv, 8);
-	while (offset + 8 <= len) {
-		for (i = 0; i < 8; i++)
-			buf[i] ^= data[offset + i];
-		des_ecb_crypt(&ctx->key1,
-		              buf,
-		              output+offset,
-		              0);
-		des_ecb_crypt(&ctx->key2,
-		              output+offset,
-		              buf,
-		              1);
-		des_ecb_crypt(&ctx->key3,
-		              buf,
-		              output+offset,
-		              0);
-		memcpy(buf, output+offset, 8);
-		offset += 8;
-	}
-	*outlen = len;
-	if (offset < len) {
-		*outlen += len - offset;
-		tmp = offset;
-		i = 0;
-		while (tmp < len) {
-			buf[i++] ^= data[tmp];
-			tmp++;
-		}
-		des_ecb_crypt(&ctx->key1,
-		              buf,
-		              output+offset,
-		              0);
-		des_ecb_crypt(&ctx->key2,
-		              output+offset,
-		              buf,
-		              1);
-		des_ecb_crypt(&ctx->key3,
-		              buf,
-		              output+offset,
-		              0);
-	}
-	return 0;
-}
-
-static gint
-des3_encrypt(PurpleCipherContext *context, const guchar data[],
-             size_t len, guchar output[], size_t *outlen)
-{
-	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
-
-	if (ctx->mode == PURPLE_CIPHER_BATCH_MODE_ECB) {
-		return des3_ecb_encrypt(ctx, data, len, output, outlen);
-	} else if (ctx->mode == PURPLE_CIPHER_BATCH_MODE_CBC) {
-		return des3_cbc_encrypt(ctx, data, len, output, outlen);
-	} else {
-		g_return_val_if_reached(0);
-	}
-
-	return 0;
-}
-
-static gint
-des3_ecb_decrypt(struct _des3_ctx *ctx, const guchar data[],
-                 size_t len, guchar output[], size_t *outlen)
-{
-	int offset = 0;
-	int i = 0;
-	int tmp;
-	guint8 buf[8] = {0,0,0,0,0,0,0,0};
-	while (offset + 8 <= len) {
-		/* NOTE: Apply key in reverse */
-		des_ecb_crypt(&ctx->key3,
-		              data+offset,
-		              output+offset,
-		              1);
-		des_ecb_crypt(&ctx->key2,
-		              output+offset,
-		              buf,
-		              0);
-		des_ecb_crypt(&ctx->key1,
-		              buf,
-		              output+offset,
-		              1);
-		offset+=8;
-	}
-	*outlen = len;
-	if (offset < len) {
-		*outlen += len - offset;
-		tmp = offset;
-		memset(buf, 0, 8);
-		while (tmp < len) {
-			buf[i++] = data[tmp];
-			tmp++;
-		}
-		des_ecb_crypt(&ctx->key3,
-		              buf,
-		              output+offset,
-		              1);
-		des_ecb_crypt(&ctx->key2,
-		              output+offset,
-		              buf,
-		              0);
-		des_ecb_crypt(&ctx->key1,
-		              buf,
-		              output+offset,
-		              1);
-	}
-	return 0;
-}
-
-static gint
-des3_cbc_decrypt(struct _des3_ctx *ctx, const guchar data[],
-                 size_t len, guchar output[], size_t *outlen)
-{
-	int offset = 0;
-	int i = 0;
-	int tmp;
-	guint8 buf[8] = {0,0,0,0,0,0,0,0};
-	guint8 link[8];
-	memcpy(link, ctx->iv, 8);
-	while (offset + 8 <= len) {
-		des_ecb_crypt(&ctx->key3,
-		              data+offset,
-		              output+offset,
-		              1);
-		des_ecb_crypt(&ctx->key2,
-		              output+offset,
-		              buf,
-		              0);
-		des_ecb_crypt(&ctx->key1,
-		              buf,
-		              output+offset,
-		              1);
-		for (i = 0; i < 8; i++)
-			output[offset + i] ^= link[i];
-		memcpy(link, data + offset, 8);
-		offset+=8;
-	}
-	*outlen = len;
-	if(offset<len) {
-		*outlen += len - offset;
-		tmp = offset;
-		memset(buf, 0, 8);
-		i = 0;
-		while(tmp<len) {
-			buf[i++] = data[tmp];
-			tmp++;
-		}
-		des_ecb_crypt(&ctx->key3,
-		              buf,
-		              output+offset,
-		              1);
-		des_ecb_crypt(&ctx->key2,
-		              output+offset,
-		              buf,
-		              0);
-		des_ecb_crypt(&ctx->key1,
-		              buf,
-		              output+offset,
-		              1);
-		for (i = 0; i < 8; i++)
-			output[offset + i] ^= link[i];
-	}
-	return 0;
-}
-
-static gint
-des3_decrypt(PurpleCipherContext *context, const guchar data[],
-             size_t len, guchar output[], size_t *outlen)
-{
-	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
-
-	if (ctx->mode == PURPLE_CIPHER_BATCH_MODE_ECB) {
-		return des3_ecb_decrypt(ctx, data, len, output, outlen);
-	} else if (ctx->mode == PURPLE_CIPHER_BATCH_MODE_CBC) {
-		return des3_cbc_decrypt(ctx, data, len, output, outlen);
-	} else {
-		g_return_val_if_reached(0);
-	}
-
-	return 0;
-}
-
-static void
-des3_set_batch(PurpleCipherContext *context, PurpleCipherBatchMode mode)
-{
-	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
-
-	ctx->mode = mode;
-}
-
-static PurpleCipherBatchMode
-des3_get_batch(PurpleCipherContext *context)
-{
-	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
-
-	return ctx->mode;
-}
-
-static void
-des3_set_iv(PurpleCipherContext *context, guchar *iv, size_t len)
-{
-	struct _des3_ctx *ctx;
-
-	g_return_if_fail(len == 8);
-
-	ctx = purple_cipher_context_get_data(context);
-
-	memcpy(ctx->iv, iv, len);
-}
-
-static void
-des3_init(PurpleCipherContext *context, gpointer extra)
-{
-	struct _des3_ctx *mctx;
-	mctx = g_new0(struct _des3_ctx, 1);
-	purple_cipher_context_set_data(context, mctx);
-}
-
-static void
-des3_uninit(PurpleCipherContext *context)
-{
-	struct _des3_ctx *des3_context;
-
-	des3_context = purple_cipher_context_get_data(context);
-	memset(des3_context, 0, sizeof(*des3_context));
-
-	g_free(des3_context);
-	des3_context = NULL;
-}
-
-static PurpleCipherOps DES3Ops = {
-	NULL,              /* Set option */
-	NULL,              /* Get option */
-	des3_init,         /* init */
-	NULL,              /* reset */
-	des3_uninit,       /* uninit */
-	des3_set_iv,       /* set iv */
-	NULL,              /* append */
-	NULL,              /* digest */
-	des3_encrypt,      /* encrypt */
-	des3_decrypt,      /* decrypt */
-	NULL,              /* set salt */
-	NULL,              /* get salt size */
-	des3_set_key,      /* set key */
-	NULL,              /* get key size */
-	des3_set_batch,    /* set batch mode */
-	des3_get_batch,    /* get batch mode */
-	NULL,              /* get block size */
-	NULL               /* set key with len */
-};
-
 /*******************************************************************************
  * Structs
  ******************************************************************************/
@@ -1110,6 +308,8 @@ purple_ciphers_get_handle() {
  * the developer to just add it here since they have to register it here as
  * well.
  */
+PurpleCipherOps *purple_des_cipher_get_ops();
+PurpleCipherOps *purple_des3_cipher_get_ops();
 PurpleCipherOps *purple_hmac_cipher_get_ops();
 PurpleCipherOps *purple_md4_cipher_get_ops();
 PurpleCipherOps *purple_md5_cipher_get_ops();
@@ -1137,8 +337,8 @@ purple_ciphers_init() {
 	purple_ciphers_register_cipher("sha256", purple_sha256_cipher_get_ops());
 	purple_ciphers_register_cipher("md4", purple_md4_cipher_get_ops());
 	purple_ciphers_register_cipher("hmac", purple_hmac_cipher_get_ops());
-	purple_ciphers_register_cipher("des", &DESOps);
-	purple_ciphers_register_cipher("des3", &DES3Ops);
+	purple_ciphers_register_cipher("des", purple_des_cipher_get_ops());
+	purple_ciphers_register_cipher("des3", purple_des3_cipher_get_ops());
 	purple_ciphers_register_cipher("rc4", purple_rc4_cipher_get_ops());
 }
 
diff --git a/libpurple/ciphers/Makefile.am b/libpurple/ciphers/Makefile.am
index e34612c1ad..ec53734a74 100644
--- a/libpurple/ciphers/Makefile.am
+++ b/libpurple/ciphers/Makefile.am
@@ -1,6 +1,7 @@
 noinst_LTLIBRARIES=libpurple-ciphers.la
 
 libpurple_ciphers_la_SOURCES=\
+	des.c \
 	hmac.c \
 	md4.c \
 	md5.c \
diff --git a/libpurple/ciphers/des.c b/libpurple/ciphers/des.c
new file mode 100644
index 0000000000..cf1932ee20
--- /dev/null
+++ b/libpurple/ciphers/des.c
@@ -0,0 +1,824 @@
+/*
+ * 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.
+ *
+ * Original des taken from gpg
+ *
+ * des.c - DES and Triple-DES encryption/decryption Algorithm
+ *  Copyright (C) 1998 Free Software Foundation, Inc.
+ *
+ *  Please see below for more legal information!
+ *
+ *   According to the definition of DES in FIPS PUB 46-2 from December 1993.
+ *   For a description of triple encryption, see:
+ *     Bruce Schneier: Applied Cryptography. Second Edition.
+ *     John Wiley & Sons, 1996. ISBN 0-471-12845-7. Pages 358 ff.
+ *
+ *   This file is part of GnuPG.
+ *
+ * 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 <string.h>
+
+/******************************************************************************
+ * DES
+ *****************************************************************************/
+typedef struct _des_ctx
+{
+	guint32 encrypt_subkeys[32];
+	guint32 decrypt_subkeys[32];
+} des_ctx[1];
+
+/*
+ *  The s-box values are permuted according to the 'primitive function P'
+ */
+static const guint32 sbox1[64] =
+{
+	0x00808200, 0x00000000, 0x00008000, 0x00808202, 0x00808002, 0x00008202, 0x00000002, 0x00008000,
+	0x00000200, 0x00808200, 0x00808202, 0x00000200, 0x00800202, 0x00808002, 0x00800000, 0x00000002,
+	0x00000202, 0x00800200, 0x00800200, 0x00008200, 0x00008200, 0x00808000, 0x00808000, 0x00800202,
+	0x00008002, 0x00800002, 0x00800002, 0x00008002, 0x00000000, 0x00000202, 0x00008202, 0x00800000,
+	0x00008000, 0x00808202, 0x00000002, 0x00808000, 0x00808200, 0x00800000, 0x00800000, 0x00000200,
+	0x00808002, 0x00008000, 0x00008200, 0x00800002, 0x00000200, 0x00000002, 0x00800202, 0x00008202,
+	0x00808202, 0x00008002, 0x00808000, 0x00800202, 0x00800002, 0x00000202, 0x00008202, 0x00808200,
+	0x00000202, 0x00800200, 0x00800200, 0x00000000, 0x00008002, 0x00008200, 0x00000000, 0x00808002
+};
+
+static const guint32 sbox2[64] =
+{
+	0x40084010, 0x40004000, 0x00004000, 0x00084010, 0x00080000, 0x00000010, 0x40080010, 0x40004010,
+	0x40000010, 0x40084010, 0x40084000, 0x40000000, 0x40004000, 0x00080000, 0x00000010, 0x40080010,
+	0x00084000, 0x00080010, 0x40004010, 0x00000000, 0x40000000, 0x00004000, 0x00084010, 0x40080000,
+	0x00080010, 0x40000010, 0x00000000, 0x00084000, 0x00004010, 0x40084000, 0x40080000, 0x00004010,
+	0x00000000, 0x00084010, 0x40080010, 0x00080000, 0x40004010, 0x40080000, 0x40084000, 0x00004000,
+	0x40080000, 0x40004000, 0x00000010, 0x40084010, 0x00084010, 0x00000010, 0x00004000, 0x40000000,
+	0x00004010, 0x40084000, 0x00080000, 0x40000010, 0x00080010, 0x40004010, 0x40000010, 0x00080010,
+	0x00084000, 0x00000000, 0x40004000, 0x00004010, 0x40000000, 0x40080010, 0x40084010, 0x00084000
+};
+
+static const guint32 sbox3[64] =
+{
+	0x00000104, 0x04010100, 0x00000000, 0x04010004, 0x04000100, 0x00000000, 0x00010104, 0x04000100,
+	0x00010004, 0x04000004, 0x04000004, 0x00010000, 0x04010104, 0x00010004, 0x04010000, 0x00000104,
+	0x04000000, 0x00000004, 0x04010100, 0x00000100, 0x00010100, 0x04010000, 0x04010004, 0x00010104,
+	0x04000104, 0x00010100, 0x00010000, 0x04000104, 0x00000004, 0x04010104, 0x00000100, 0x04000000,
+	0x04010100, 0x04000000, 0x00010004, 0x00000104, 0x00010000, 0x04010100, 0x04000100, 0x00000000,
+	0x00000100, 0x00010004, 0x04010104, 0x04000100, 0x04000004, 0x00000100, 0x00000000, 0x04010004,
+	0x04000104, 0x00010000, 0x04000000, 0x04010104, 0x00000004, 0x00010104, 0x00010100, 0x04000004,
+	0x04010000, 0x04000104, 0x00000104, 0x04010000, 0x00010104, 0x00000004, 0x04010004, 0x00010100
+};
+
+static const guint32 sbox4[64] =
+{
+	0x80401000, 0x80001040, 0x80001040, 0x00000040, 0x00401040, 0x80400040, 0x80400000, 0x80001000,
+	0x00000000, 0x00401000, 0x00401000, 0x80401040, 0x80000040, 0x00000000, 0x00400040, 0x80400000,
+	0x80000000, 0x00001000, 0x00400000, 0x80401000, 0x00000040, 0x00400000, 0x80001000, 0x00001040,
+	0x80400040, 0x80000000, 0x00001040, 0x00400040, 0x00001000, 0x00401040, 0x80401040, 0x80000040,
+	0x00400040, 0x80400000, 0x00401000, 0x80401040, 0x80000040, 0x00000000, 0x00000000, 0x00401000,
+	0x00001040, 0x00400040, 0x80400040, 0x80000000, 0x80401000, 0x80001040, 0x80001040, 0x00000040,
+	0x80401040, 0x80000040, 0x80000000, 0x00001000, 0x80400000, 0x80001000, 0x00401040, 0x80400040,
+	0x80001000, 0x00001040, 0x00400000, 0x80401000, 0x00000040, 0x00400000, 0x00001000, 0x00401040
+};
+
+static const guint32 sbox5[64] =
+{
+	0x00000080, 0x01040080, 0x01040000, 0x21000080, 0x00040000, 0x00000080, 0x20000000, 0x01040000,
+	0x20040080, 0x00040000, 0x01000080, 0x20040080, 0x21000080, 0x21040000, 0x00040080, 0x20000000,
+	0x01000000, 0x20040000, 0x20040000, 0x00000000, 0x20000080, 0x21040080, 0x21040080, 0x01000080,
+	0x21040000, 0x20000080, 0x00000000, 0x21000000, 0x01040080, 0x01000000, 0x21000000, 0x00040080,
+	0x00040000, 0x21000080, 0x00000080, 0x01000000, 0x20000000, 0x01040000, 0x21000080, 0x20040080,
+	0x01000080, 0x20000000, 0x21040000, 0x01040080, 0x20040080, 0x00000080, 0x01000000, 0x21040000,
+	0x21040080, 0x00040080, 0x21000000, 0x21040080, 0x01040000, 0x00000000, 0x20040000, 0x21000000,
+	0x00040080, 0x01000080, 0x20000080, 0x00040000, 0x00000000, 0x20040000, 0x01040080, 0x20000080
+};
+
+static const guint32 sbox6[64] =
+{
+	0x10000008, 0x10200000, 0x00002000, 0x10202008, 0x10200000, 0x00000008, 0x10202008, 0x00200000,
+	0x10002000, 0x00202008, 0x00200000, 0x10000008, 0x00200008, 0x10002000, 0x10000000, 0x00002008,
+	0x00000000, 0x00200008, 0x10002008, 0x00002000, 0x00202000, 0x10002008, 0x00000008, 0x10200008,
+	0x10200008, 0x00000000, 0x00202008, 0x10202000, 0x00002008, 0x00202000, 0x10202000, 0x10000000,
+	0x10002000, 0x00000008, 0x10200008, 0x00202000, 0x10202008, 0x00200000, 0x00002008, 0x10000008,
+	0x00200000, 0x10002000, 0x10000000, 0x00002008, 0x10000008, 0x10202008, 0x00202000, 0x10200000,
+	0x00202008, 0x10202000, 0x00000000, 0x10200008, 0x00000008, 0x00002000, 0x10200000, 0x00202008,
+	0x00002000, 0x00200008, 0x10002008, 0x00000000, 0x10202000, 0x10000000, 0x00200008, 0x10002008
+};
+
+static const guint32 sbox7[64] =
+{
+	0x00100000, 0x02100001, 0x02000401, 0x00000000, 0x00000400, 0x02000401, 0x00100401, 0x02100400,
+	0x02100401, 0x00100000, 0x00000000, 0x02000001, 0x00000001, 0x02000000, 0x02100001, 0x00000401,
+	0x02000400, 0x00100401, 0x00100001, 0x02000400, 0x02000001, 0x02100000, 0x02100400, 0x00100001,
+	0x02100000, 0x00000400, 0x00000401, 0x02100401, 0x00100400, 0x00000001, 0x02000000, 0x00100400,
+	0x02000000, 0x00100400, 0x00100000, 0x02000401, 0x02000401, 0x02100001, 0x02100001, 0x00000001,
+	0x00100001, 0x02000000, 0x02000400, 0x00100000, 0x02100400, 0x00000401, 0x00100401, 0x02100400,
+	0x00000401, 0x02000001, 0x02100401, 0x02100000, 0x00100400, 0x00000000, 0x00000001, 0x02100401,
+	0x00000000, 0x00100401, 0x02100000, 0x00000400, 0x02000001, 0x02000400, 0x00000400, 0x00100001
+};
+
+static const guint32 sbox8[64] =
+{
+	0x08000820, 0x00000800, 0x00020000, 0x08020820, 0x08000000, 0x08000820, 0x00000020, 0x08000000,
+	0x00020020, 0x08020000, 0x08020820, 0x00020800, 0x08020800, 0x00020820, 0x00000800, 0x00000020,
+	0x08020000, 0x08000020, 0x08000800, 0x00000820, 0x00020800, 0x00020020, 0x08020020, 0x08020800,
+	0x00000820, 0x00000000, 0x00000000, 0x08020020, 0x08000020, 0x08000800, 0x00020820, 0x00020000,
+	0x00020820, 0x00020000, 0x08020800, 0x00000800, 0x00000020, 0x08020020, 0x00000800, 0x00020820,
+	0x08000800, 0x00000020, 0x08000020, 0x08020000, 0x08020020, 0x08000000, 0x00020000, 0x08000820,
+	0x00000000, 0x08020820, 0x00020020, 0x08000020, 0x08020000, 0x08000800, 0x08000820, 0x00000000,
+	0x08020820, 0x00020800, 0x00020800, 0x00000820, 0x00000820, 0x00020020, 0x08000000, 0x08020800
+};
+
+
+/*
+ *  * These two tables are part of the 'permuted choice 1' function.
+ *   * In this implementation several speed improvements are done.
+ *    */
+static const guint32 leftkey_swap[16] =
+{
+	0x00000000, 0x00000001, 0x00000100, 0x00000101,
+	0x00010000, 0x00010001, 0x00010100, 0x00010101,
+	0x01000000, 0x01000001, 0x01000100, 0x01000101,
+	0x01010000, 0x01010001, 0x01010100, 0x01010101
+};
+
+static const guint32 rightkey_swap[16] =
+{
+	0x00000000, 0x01000000, 0x00010000, 0x01010000,
+	0x00000100, 0x01000100, 0x00010100, 0x01010100,
+	0x00000001, 0x01000001, 0x00010001, 0x01010001,
+	0x00000101, 0x01000101, 0x00010101, 0x01010101,
+};
+
+
+/*
+ *  Numbers of left shifts per round for encryption subkey schedule
+ *  To calculate the decryption key scheduling we just reverse the
+ *  ordering of the subkeys so we can omit the table for decryption
+ *  subkey schedule.
+ */
+static const guint8 encrypt_rotate_tab[16] =
+{
+	1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
+};
+
+/*
+ *  Macro to swap bits across two words
+ **/
+#define DO_PERMUTATION(a, temp, b, offset, mask)    \
+	temp = ((a>>offset) ^ b) & mask;            \
+	b ^= temp;                      \
+	a ^= temp<<offset;
+
+
+/*
+ *  This performs the 'initial permutation' for the data to be encrypted or decrypted
+ **/
+#define INITIAL_PERMUTATION(left, temp, right)      \
+	DO_PERMUTATION(left, temp, right, 4, 0x0f0f0f0f)    \
+	DO_PERMUTATION(left, temp, right, 16, 0x0000ffff)   \
+	DO_PERMUTATION(right, temp, left, 2, 0x33333333)    \
+	DO_PERMUTATION(right, temp, left, 8, 0x00ff00ff)    \
+	DO_PERMUTATION(left, temp, right, 1, 0x55555555)
+
+
+/*
+ * The 'inverse initial permutation'
+ **/
+#define FINAL_PERMUTATION(left, temp, right)        \
+	DO_PERMUTATION(left, temp, right, 1, 0x55555555)    \
+	DO_PERMUTATION(right, temp, left, 8, 0x00ff00ff)    \
+	DO_PERMUTATION(right, temp, left, 2, 0x33333333)    \
+	DO_PERMUTATION(left, temp, right, 16, 0x0000ffff)   \
+	DO_PERMUTATION(left, temp, right, 4, 0x0f0f0f0f)
+
+
+/*
+ * A full DES round including 'expansion function', 'sbox substitution'
+ * and 'primitive function P' but without swapping the left and right word.
+ **/
+#define DES_ROUND(from, to, work, subkey)       \
+	work = ((from<<1) | (from>>31)) ^ *subkey++;    \
+	to ^= sbox8[  work      & 0x3f ];           \
+	to ^= sbox6[ (work>>8)  & 0x3f ];           \
+	to ^= sbox4[ (work>>16) & 0x3f ];           \
+	to ^= sbox2[ (work>>24) & 0x3f ];           \
+	work = ((from>>3) | (from<<29)) ^ *subkey++;    \
+	to ^= sbox7[  work      & 0x3f ];           \
+	to ^= sbox5[ (work>>8)  & 0x3f ];           \
+	to ^= sbox3[ (work>>16) & 0x3f ];           \
+	to ^= sbox1[ (work>>24) & 0x3f ];
+
+
+/*
+ * Macros to convert 8 bytes from/to 32bit words
+ **/
+#define READ_64BIT_DATA(data, left, right)                  \
+	left  = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3];   \
+	right = (data[4] << 24) | (data[5] << 16) | (data[6] << 8) | data[7];
+
+#define WRITE_64BIT_DATA(data, left, right)                 \
+	data[0] = (left >> 24) &0xff; data[1] = (left >> 16) &0xff;         \
+	data[2] = (left >> 8) &0xff; data[3] = left &0xff;              \
+	data[4] = (right >> 24) &0xff; data[5] = (right >> 16) &0xff;       \
+	data[6] = (right >> 8) &0xff; data[7] = right &0xff;
+
+
+/*
+ * des_key_schedule():    Calculate 16 subkeys pairs (even/odd) for
+ *            16 encryption rounds.
+ *            To calculate subkeys for decryption the caller
+ *                have to reorder the generated subkeys.
+ *
+ *        rawkey:       8 Bytes of key data
+ *        subkey:       Array of at least 32 guint32s. Will be filled
+ *              with calculated subkeys.
+ *
+ **/
+static void
+des_key_schedule (const guint8 * rawkey, guint32 * subkey)
+{
+	guint32 left, right, work;
+	int round;
+
+	READ_64BIT_DATA (rawkey, left, right)
+
+	DO_PERMUTATION (right, work, left, 4, 0x0f0f0f0f)
+	DO_PERMUTATION (right, work, left, 0, 0x10101010)
+
+	left = (leftkey_swap[(left >> 0) & 0xf] << 3) | (leftkey_swap[(left >> 8) & 0xf] << 2)
+	| (leftkey_swap[(left >> 16) & 0xf] << 1) | (leftkey_swap[(left >> 24) & 0xf])
+	| (leftkey_swap[(left >> 5) & 0xf] << 7) | (leftkey_swap[(left >> 13) & 0xf] << 6)
+	| (leftkey_swap[(left >> 21) & 0xf] << 5) | (leftkey_swap[(left >> 29) & 0xf] << 4);
+
+	left &= 0x0fffffff;
+
+	right = (rightkey_swap[(right >> 1) & 0xf] << 3) | (rightkey_swap[(right >> 9) & 0xf] << 2)
+		| (rightkey_swap[(right >> 17) & 0xf] << 1) | (rightkey_swap[(right >> 25) & 0xf])
+		| (rightkey_swap[(right >> 4) & 0xf] << 7) | (rightkey_swap[(right >> 12) & 0xf] << 6)
+		| (rightkey_swap[(right >> 20) & 0xf] << 5) | (rightkey_swap[(right >> 28) & 0xf] << 4);
+
+	right &= 0x0fffffff;
+
+	for (round = 0; round < 16; ++round)
+	{
+        left = ((left << encrypt_rotate_tab[round]) | (left >> (28 - encrypt_rotate_tab[round]))) & 0x0fffffff;
+        right = ((right << encrypt_rotate_tab[round]) | (right >> (28 - encrypt_rotate_tab[round]))) & 0x0fffffff;
+
+		*subkey++ = ((left << 4) & 0x24000000)
+			| ((left << 28) & 0x10000000)
+			| ((left << 14) & 0x08000000)
+			| ((left << 18) & 0x02080000)
+			| ((left << 6) & 0x01000000)
+			| ((left << 9) & 0x00200000)
+			| ((left >> 1) & 0x00100000)
+			| ((left << 10) & 0x00040000)
+			| ((left << 2) & 0x00020000)
+			| ((left >> 10) & 0x00010000)
+			| ((right >> 13) & 0x00002000)
+			| ((right >> 4) & 0x00001000)
+			| ((right << 6) & 0x00000800)
+			| ((right >> 1) & 0x00000400)
+			| ((right >> 14) & 0x00000200)
+			| (right & 0x00000100)
+			| ((right >> 5) & 0x00000020)
+			| ((right >> 10) & 0x00000010)
+			| ((right >> 3) & 0x00000008)
+			| ((right >> 18) & 0x00000004)
+			| ((right >> 26) & 0x00000002)
+			| ((right >> 24) & 0x00000001);
+
+		*subkey++ = ((left << 15) & 0x20000000)
+			| ((left << 17) & 0x10000000)
+			| ((left << 10) & 0x08000000)
+			| ((left << 22) & 0x04000000)
+			| ((left >> 2) & 0x02000000)
+			| ((left << 1) & 0x01000000)
+			| ((left << 16) & 0x00200000)
+			| ((left << 11) & 0x00100000)
+			| ((left << 3) & 0x00080000)
+			| ((left >> 6) & 0x00040000)
+			| ((left << 15) & 0x00020000)
+			| ((left >> 4) & 0x00010000)
+			| ((right >> 2) & 0x00002000)
+			| ((right << 8) & 0x00001000)
+			| ((right >> 14) & 0x00000808)
+			| ((right >> 9) & 0x00000400)
+			| ((right) & 0x00000200)
+			| ((right << 7) & 0x00000100)
+			| ((right >> 7) & 0x00000020)
+			| ((right >> 3) & 0x00000011)
+			| ((right << 2) & 0x00000004)
+			| ((right >> 21) & 0x00000002);
+	}
+}
+
+
+/*
+ *  Fill a DES context with subkeys calculated from a 64bit key.
+ *  Does not check parity bits, but simply ignore them.
+ *  Does not check for weak keys.
+ **/
+static void
+des_set_key (PurpleCipherContext *context, const guchar * key)
+{
+	struct _des_ctx *ctx = purple_cipher_context_get_data(context);
+	int i;
+
+	des_key_schedule (key, ctx->encrypt_subkeys);
+
+	for(i=0; i<32; i+=2)
+	{
+		ctx->decrypt_subkeys[i] = ctx->encrypt_subkeys[30-i];
+		ctx->decrypt_subkeys[i+1] = ctx->encrypt_subkeys[31-i];
+	}
+}
+
+
+/*
+ *  Electronic Codebook Mode DES encryption/decryption of data according
+ *  to 'mode'.
+ **/
+static int
+des_ecb_crypt (struct _des_ctx *ctx, const guint8 * from, guint8 * to, int mode)
+{
+	guint32 left, right, work;
+	guint32 *keys;
+
+	keys = mode ? ctx->decrypt_subkeys : ctx->encrypt_subkeys;
+
+	READ_64BIT_DATA (from, left, right)
+	INITIAL_PERMUTATION (left, work, right)
+
+	DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+	DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+	DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+	DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+	DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+	DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+	DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+	DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+
+	FINAL_PERMUTATION (right, work, left)
+	WRITE_64BIT_DATA (to, right, left)
+
+	return 0;
+}
+
+static gint
+des_encrypt(PurpleCipherContext *context, const guchar data[],
+            size_t len, guchar output[], size_t *outlen)
+{
+	int offset = 0;
+	int i = 0;
+	int tmp;
+	guint8 buf[8] = {0,0,0,0,0,0,0,0};
+	while(offset+8<=len) {
+		des_ecb_crypt(purple_cipher_context_get_data(context),
+		              data+offset,
+		              output+offset,
+		              0);
+		offset+=8;
+	}
+	*outlen = len;
+	if(offset<len) {
+		*outlen += len - offset;
+		tmp = offset;
+		while(tmp<len) {
+			buf[i++] = data[tmp];
+			tmp++;
+		}
+		des_ecb_crypt(purple_cipher_context_get_data(context),
+		              buf,
+		              output+offset,
+		              0);
+	}
+	return 0;
+}
+
+static gint
+des_decrypt(PurpleCipherContext *context, const guchar data[],
+            size_t len, guchar output[], size_t *outlen)
+{
+	int offset = 0;
+	int i = 0;
+	int tmp;
+	guint8 buf[8] = {0,0,0,0,0,0,0,0};
+	while(offset+8<=len) {
+		des_ecb_crypt(purple_cipher_context_get_data(context),
+		              data+offset,
+		              output+offset,
+		              1);
+		offset+=8;
+	}
+	*outlen = len;
+	if(offset<len) {
+		*outlen += len - offset;
+		tmp = offset;
+		while(tmp<len) {
+			buf[i++] = data[tmp];
+			tmp++;
+		}
+		des_ecb_crypt(purple_cipher_context_get_data(context),
+		              buf,
+		              output+offset,
+		              1);
+	}
+	return 0;
+}
+
+static void
+des_init(PurpleCipherContext *context, gpointer extra) {
+	struct _des_ctx *mctx;
+	mctx = g_new0(struct _des_ctx, 1);
+	purple_cipher_context_set_data(context, mctx);
+}
+
+static void
+des_uninit(PurpleCipherContext *context) {
+	struct _des_ctx *des_context;
+
+	des_context = purple_cipher_context_get_data(context);
+	memset(des_context, 0, sizeof(*des_context));
+
+	g_free(des_context);
+	des_context = NULL;
+}
+
+static PurpleCipherOps DESOps = {
+	.init = des_init,
+	.uninit = des_uninit,
+	.encrypt = des_encrypt,
+	.decrypt = des_decrypt,
+	.set_key = des_set_key,
+};
+
+/******************************************************************************
+ * Triple-DES
+ *****************************************************************************/
+
+typedef struct _des3_ctx
+{
+	PurpleCipherBatchMode mode;
+	guchar iv[8];
+	/* First key for encryption */
+	struct _des_ctx key1;
+	/* Second key for decryption */
+	struct _des_ctx key2;
+	/* Third key for encryption */
+	struct _des_ctx key3;
+} des3_ctx[1];
+
+/*
+ *  Fill a DES3 context with subkeys calculated from 3 64bit key.
+ *  Does not check parity bits, but simply ignore them.
+ *  Does not check for weak keys.
+ **/
+static void
+des3_set_key(PurpleCipherContext *context, const guchar * key)
+{
+	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
+	int i;
+
+	des_key_schedule (key +  0, ctx->key1.encrypt_subkeys);
+	des_key_schedule (key +  8, ctx->key2.encrypt_subkeys);
+	des_key_schedule (key + 16, ctx->key3.encrypt_subkeys);
+
+	for (i = 0; i < 32; i += 2)
+	{
+		ctx->key1.decrypt_subkeys[i]    = ctx->key1.encrypt_subkeys[30-i];
+		ctx->key1.decrypt_subkeys[i+1]  = ctx->key1.encrypt_subkeys[31-i];
+		ctx->key2.decrypt_subkeys[i]    = ctx->key2.encrypt_subkeys[30-i];
+		ctx->key2.decrypt_subkeys[i+1]  = ctx->key2.encrypt_subkeys[31-i];
+		ctx->key3.decrypt_subkeys[i]    = ctx->key3.encrypt_subkeys[30-i];
+		ctx->key3.decrypt_subkeys[i+1]  = ctx->key3.encrypt_subkeys[31-i];
+	}
+}
+
+static gint
+des3_ecb_encrypt(struct _des3_ctx *ctx, const guchar data[],
+                 size_t len, guchar output[], size_t *outlen)
+{
+	int offset = 0;
+	int i = 0;
+	int tmp;
+	guint8 buf[8] = {0,0,0,0,0,0,0,0};
+	while (offset + 8 <= len) {
+		des_ecb_crypt(&ctx->key1,
+		              data+offset,
+		              output+offset,
+		              0);
+		des_ecb_crypt(&ctx->key2,
+		              output+offset,
+		              buf,
+		              1);
+		des_ecb_crypt(&ctx->key3,
+		              buf,
+		              output+offset,
+		              0);
+		offset += 8;
+	}
+	*outlen = len;
+	if (offset < len) {
+		*outlen += len - offset;
+		tmp = offset;
+		memset(buf, 0, 8);
+		while (tmp < len) {
+			buf[i++] = data[tmp];
+			tmp++;
+		}
+		des_ecb_crypt(&ctx->key1,
+		              buf,
+		              output+offset,
+		              0);
+		des_ecb_crypt(&ctx->key2,
+		              output+offset,
+		              buf,
+		              1);
+		des_ecb_crypt(&ctx->key3,
+		              buf,
+		              output+offset,
+		              0);
+	}
+	return 0;
+}
+
+static gint
+des3_cbc_encrypt(struct _des3_ctx *ctx, const guchar data[],
+                 size_t len, guchar output[], size_t *outlen)
+{
+	int offset = 0;
+	int i = 0;
+	int tmp;
+	guint8 buf[8];
+	memcpy(buf, ctx->iv, 8);
+	while (offset + 8 <= len) {
+		for (i = 0; i < 8; i++)
+			buf[i] ^= data[offset + i];
+
+		des_ecb_crypt(&ctx->key1,
+		              buf,
+		              output+offset,
+		              0);
+		des_ecb_crypt(&ctx->key2,
+		              output+offset,
+		              buf,
+		              1);
+		des_ecb_crypt(&ctx->key3,
+		              buf,
+		              output+offset,
+		              0);
+		memcpy(buf, output+offset, 8);
+		offset += 8;
+	}
+	*outlen = len;
+	if (offset < len) {
+		*outlen += len - offset;
+		tmp = offset;
+		i = 0;
+		while (tmp < len) {
+			buf[i++] ^= data[tmp];
+			tmp++;
+		}
+		des_ecb_crypt(&ctx->key1,
+		              buf,
+		              output+offset,
+		              0);
+		des_ecb_crypt(&ctx->key2,
+		              output+offset,
+		              buf,
+		              1);
+		des_ecb_crypt(&ctx->key3,
+		              buf,
+		              output+offset,
+		              0);
+	}
+	return 0;
+}
+
+static gint
+des3_encrypt(PurpleCipherContext *context, const guchar data[],
+             size_t len, guchar output[], size_t *outlen)
+{
+	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
+
+	if (ctx->mode == PURPLE_CIPHER_BATCH_MODE_ECB) {
+		return des3_ecb_encrypt(ctx, data, len, output, outlen);
+	} else if (ctx->mode == PURPLE_CIPHER_BATCH_MODE_CBC) {
+		return des3_cbc_encrypt(ctx, data, len, output, outlen);
+	} else {
+		g_return_val_if_reached(0);
+	}
+
+	return 0;
+}
+
+static gint
+des3_ecb_decrypt(struct _des3_ctx *ctx, const guchar data[],
+                 size_t len, guchar output[], size_t *outlen)
+{
+	int offset = 0;
+	int i = 0;
+	int tmp;
+	guint8 buf[8] = {0,0,0,0,0,0,0,0};
+	while (offset + 8 <= len) {
+		/* NOTE: Apply key in reverse */
+		des_ecb_crypt(&ctx->key3,
+		              data+offset,
+		              output+offset,
+		              1);
+		des_ecb_crypt(&ctx->key2,
+		              output+offset,
+		              buf,
+		              0);
+		des_ecb_crypt(&ctx->key1,
+		              buf,
+		              output+offset,
+		              1);
+		offset+=8;
+	}
+	*outlen = len;
+	if (offset < len) {
+		*outlen += len - offset;
+		tmp = offset;
+		memset(buf, 0, 8);
+		while (tmp < len) {
+			buf[i++] = data[tmp];
+			tmp++;
+		}
+		des_ecb_crypt(&ctx->key3,
+		              buf,
+		              output+offset,
+		              1);
+		des_ecb_crypt(&ctx->key2,
+		              output+offset,
+		              buf,
+		              0);
+		des_ecb_crypt(&ctx->key1,
+		              buf,
+		              output+offset,
+		              1);
+	}
+	return 0;
+}
+
+static gint
+des3_cbc_decrypt(struct _des3_ctx *ctx, const guchar data[],
+                 size_t len, guchar output[], size_t *outlen)
+{
+	int offset = 0;
+	int i = 0;
+	int tmp;
+	guint8 buf[8] = {0,0,0,0,0,0,0,0};
+	guint8 link[8];
+	memcpy(link, ctx->iv, 8);
+	while (offset + 8 <= len) {
+		des_ecb_crypt(&ctx->key3,
+		              data+offset,
+		              output+offset,
+		              1);
+		des_ecb_crypt(&ctx->key2,
+		              output+offset,
+		              buf,
+		              0);
+		des_ecb_crypt(&ctx->key1,
+		              buf,
+		              output+offset,
+		              1);
+		for (i = 0; i < 8; i++)
+			output[offset + i] ^= link[i];
+		memcpy(link, data + offset, 8);
+		offset+=8;
+	}
+	*outlen = len;
+	if(offset<len) {
+		*outlen += len - offset;
+		tmp = offset;
+		memset(buf, 0, 8);
+		i = 0;
+		while(tmp<len) {
+			buf[i++] = data[tmp];
+			tmp++;
+		}
+		des_ecb_crypt(&ctx->key3,
+		              buf,
+		              output+offset,
+		              1);
+		des_ecb_crypt(&ctx->key2,
+		              output+offset,
+		              buf,
+		              0);
+		des_ecb_crypt(&ctx->key1,
+		              buf,
+		              output+offset,
+		              1);
+		for (i = 0; i < 8; i++)
+			output[offset + i] ^= link[i];
+	}
+	return 0;
+}
+
+static gint
+des3_decrypt(PurpleCipherContext *context, const guchar data[],
+             size_t len, guchar output[], size_t *outlen)
+{
+	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
+
+	if (ctx->mode == PURPLE_CIPHER_BATCH_MODE_ECB) {
+		return des3_ecb_decrypt(ctx, data, len, output, outlen);
+	} else if (ctx->mode == PURPLE_CIPHER_BATCH_MODE_CBC) {
+		return des3_cbc_decrypt(ctx, data, len, output, outlen);
+	} else {
+		g_return_val_if_reached(0);
+	}
+
+	return 0;
+}
+
+static void
+des3_set_batch(PurpleCipherContext *context, PurpleCipherBatchMode mode)
+{
+	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
+
+	ctx->mode = mode;
+}
+
+static PurpleCipherBatchMode
+des3_get_batch(PurpleCipherContext *context)
+{
+	struct _des3_ctx *ctx = purple_cipher_context_get_data(context);
+
+	return ctx->mode;
+}
+
+static void
+des3_set_iv(PurpleCipherContext *context, guchar *iv, size_t len)
+{
+	struct _des3_ctx *ctx;
+
+	g_return_if_fail(len == 8);
+
+	ctx = purple_cipher_context_get_data(context);
+
+	memcpy(ctx->iv, iv, len);
+}
+
+static void
+des3_init(PurpleCipherContext *context, gpointer extra)
+{
+	struct _des3_ctx *mctx;
+	mctx = g_new0(struct _des3_ctx, 1);
+	purple_cipher_context_set_data(context, mctx);
+}
+
+static void
+des3_uninit(PurpleCipherContext *context)
+{
+	struct _des3_ctx *des3_context;
+
+	des3_context = purple_cipher_context_get_data(context);
+	memset(des3_context, 0, sizeof(*des3_context));
+
+	g_free(des3_context);
+	des3_context = NULL;
+}
+
+static PurpleCipherOps DES3Ops = {
+	.init = des3_init,
+	.uninit = des3_uninit,
+	.set_iv = des3_set_iv,
+	.encrypt = des3_encrypt,
+	.decrypt = des3_decrypt,
+	.set_key = des3_set_key,
+	.set_batch_mode = des3_set_batch,
+	.get_batch_mode = des3_get_batch,
+};
+
+/******************************************************************************
+ * Registration
+ *****************************************************************************/
+PurpleCipherOps *
+purple_des_cipher_get_ops(void) {
+	return &DESOps;
+}
+
+PurpleCipherOps *
+purple_des3_cipher_get_ops(void) {
+	return &DES3Ops;
+}
+