diff --git a/myserpent.h b/myserpent.h
index fa5147ee..ba8726c5 100644
--- a/myserpent.h
+++ b/myserpent.h
@@ -1,102 +1,19 @@
-/**
-Copyright © 2015 Odzhan
-Copyright © 2008 Daniel Otte
-All Rights Reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-1. Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-2. 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.
-3. The name of the author may not be used to endorse or promote products
-derived from this software without specific prior written permission.
-THIS SOFTWARE IS PROVIDED BY AUTHORS "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 AUTHOR 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. */
-
-#ifndef SERPENT_H
-#define SERPENT_H
-
-#include <stdint.h>
-
-#ifdef INTRINSICS
-#define memcpy(x,y,z) __movsb(x,y,z)
-#define memmove(x,y,z) __movsb(x,y,z)
-#define memset(x,y,z) __stosb(x,y,z)
-#define ROTL32(x,r) _rotl(x,r)
-#define ROTR32(x,r) _rotr(x,r)
-#else
-
-#define U8V(v)  ((uint8_t)(v)  & 0xFFU)
-#define U16V(v) ((uint16_t)(v) & 0xFFFFU)
-#define U32V(v) ((uint32_t)(v) & 0xFFFFFFFFUL)
-#define U64V(v) ((uint64_t)(v) & 0xFFFFFFFFFFFFFFFFULL)
-
-#define ROTL8(v, n) \
-  (U8V((v) << (n)) | ((v) >> (8 - (n))))
-
-#define ROTL16(v, n) \
-  (U16V((v) << (n)) | ((v) >> (16 - (n))))
-
-#define ROTL32(v, n) \
-  (U32V((v) << (n)) | ((v) >> (32 - (n))))
-
-#define ROTL64(v, n) \
-  (U64V((v) << (n)) | ((v) >> (64 - (n))))
-
-#define ROTR8(v, n) ROTL8(v, 8 - (n))
-#define ROTR16(v, n) ROTL16(v, 16 - (n))
-#define ROTR32(v, n) ROTL32(v, 32 - (n))
-#define ROTR64(v, n) ROTL64(v, 64 - (n))
-
-#endif
-
-#define GOLDEN_RATIO    0x9e3779b9l
-
-#define SERPENT_ROUNDS  32
-#define SERPENT_BLK_LEN 16
-#define SERPENT_KEY256  32
-
-#define SERPENT_ENCRYPT  0
-#define SERPENT_DECRYPT  1
-
-#define SERPENT_IP       0
-#define SERPENT_FP       1
-
-typedef union _serpent_blk_t {
-	uint8_t b[SERPENT_BLK_LEN];
-	uint32_t w[SERPENT_BLK_LEN / 4];
-	uint64_t q[SERPENT_BLK_LEN / 2];
-} serpent_blk;
-
-typedef uint32_t serpent_subkey_t[4];
-
-typedef struct  {
-	serpent_subkey_t x[SERPENT_ROUNDS + 1];
-} serpent_key_t;
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-	// C code
-	void serpent_set_encrypt_key(serpent_key_t *key, const unsigned char *user_key);
-	void serpent_encrypt(void *in, serpent_key_t *key);
-	void serpent_decrypt(void *in, serpent_key_t *key);
-
-#ifdef __cplusplus
-}
-#endif
+#ifndef MYSERPENT_H 
+#define MYSERPENT_H
+unsigned char takebit(unsigned char bit_num);
+unsigned long int sb(char sb_num,unsigned long int sb_in_long);
+void linear(IN unsigned long int *li_0,IN unsigned long int *li_1,IN unsigned long int *li_2,IN unsigned long int *li_3,OUT unsigned long int *lo_0,OUT unsigned long int *lo_1,OUT unsigned long int *lo_2,OUT unsigned long int *lo_3);
+void IP(IN unsigned long int *ip_i0,IN unsigned long int *ip_i1,IN unsigned long int *ip_i2,IN unsigned long int *ip_i3,OUT unsigned long int *ip_o0,OUT unsigned long int *ip_o1,OUT unsigned long int *ip_o2,OUT unsigned long int *ip_o3);
+void FP(IN unsigned long int *fp_i0,IN unsigned long int *fp_i1,IN unsigned long int *fp_i2,IN unsigned long int *fp_i3,OUT unsigned long int *fp_o0,OUT unsigned long int *fp_o1,OUT unsigned long int *fp_o2,OUT unsigned long int *fp_o3);
+extern char sb0(char sb0_in);
+extern char sb1(char sb1_in);
+extern char sb2(char sb2_in);
+extern char sb3(char sb3_in);
+extern char sb4(char sb4_in);
+extern char sb5(char sb5_in);
+extern char sb6(char sb6_in);
+extern char sb7(char sb7_in);
+#define rotl(x,n)    (((x) << ((int)(n))) | ((x) >> (32 - (int)(n))))
+#define rotr(x,n)    (((x) >> ((int)(n))) | ((x) << (32 - (int)(n))))
 
 #endif