#ifndef __LIB_4__
#define __LIB_4__

#include "sha1.h"
// sha1 constants
#include <stdint.h>

unsigned int left_rotate(int shift, int value);
int aes_ctr_edit(char *ciphertext, int ciphertext_length, int offset, char *newtext);
void hash_sha1_core(char *text, int text_length, char **sha1_hash);
void hash_sha1(char *text, int text_length, char **sha1_hash);
void sha1_hash(char *text, int text_length);
void sha1_hmac(unsigned int *mac, unsigned char *message, unsigned int msg_len, unsigned char *key,
		unsigned int key_len);
int sha1_hmac_verify(unsigned int *mac, unsigned char *msg, unsigned int msg_len,
		unsigned char *key, unsigned int key_len);
int sha1_padding(unsigned long msg_len, unsigned char **result);
void sha1_hmac_forge(unsigned int *mac, unsigned char *text, unsigned int text_len,
		unsigned int *sha1_registers);
void MD4(char *str, int len, uint32_t **hash, uint32_t *md4_registers); 
void md4_prefix_key_mac(uint32_t **mac, unsigned char *text, unsigned int text_len,
		unsigned char *key, unsigned int key_len);
int md4_prefix_key_verify(uint32_t *mac, unsigned char *text, unsigned int text_len,
		unsigned char *key, unsigned int key_len);
void md4_prefix_key_forge(uint32_t **mac, unsigned char *text, unsigned int text_len,
		unsigned int *md4_registers);
int  md4_padding(unsigned long msg_len, unsigned char **result);
#endif