#ifndef CAST6_H_
#define CAST6_H_

#include <stdint.h>

#define CAST6_ROUNDS 12

/* size of this is 222 byte (HUGE) */
typedef struct cast6_ctx_st {
    uint32_t km[12][4];
    uint8_t krx[4 * 12 * 5 / 8]; /* these are packed */
} cast6_ctx_t;

void cast6_enc(void *buffer, const cast6_ctx_t *ctx);
void cast6_dec(void *buffer, const cast6_ctx_t *ctx);
void cast6_init(const void *key, uint16_t keysize_b, cast6_ctx_t *ctx);

#endif /*CAST6_H_*/