/* crypto/zuc/zuc.h */
/* ====================================================================
 * Copyright (c) 2015 - 2016 The GmSSL Project.  All rights reserved.
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#ifndef HEADER_ZUC_H
#define HEADER_ZUC_H

#include <stdint.h>
#include <stdlib.h>

#ifdef __cplusplus
extern "C" {
#endif


typedef struct {
	unsigned char zuc_state[100]; /* change what you like */
	unsigned char word_buf[4];
} zuc_key_t;


void zuc_set_key(zuc_key_t *key, const unsigned char *user_key, const unsigned char *iv);
void zuc_generate_keystream(zuc_key_t *key, size_t nwords, uint32_t *words);
void zuc_encrypt(zuc_key_t *key, size_t len, const unsigned char *in, unsigned char *out);


#define EEA3_MIN_BITS	1
#define EEA3_MAX_BITS	65504


/* 128-EEA3
 * Input:
 * count  - the counter
 * bearer - the bearer ientity 5-bit
 * direction - 0 or 1
 * nbits - the length of input message, in [1, 65504]
 */
#if 0
void eea3_set_key(zuc_key_t *key, const unsigned char *user_key,
	uint32_t count, uint32_t bearer, uint32_t direction);
void eea3_encrypt(zuc_key_t *key, size_t len, const unsigned char *in, unsigned char *out);
#endif

#ifdef __cplusplus
}
#endif
#endif