void crc_init(void);
unsigned int crc32(unsigned char *data, int len);
int cryptman_encode_bch(unsigned char *data, int len, unsigned char *buf, int buf_len);
void crc_init(void);
unsigned int crc32(unsigned char *data, int len);
int cryptman_encode_bch(unsigned char *data, int len, unsigned char *buf, int buf_len);