/* crypto/ffx/ffx.h */
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 * Copyright (c) 2015 The GmSSL Project.  All rights reserved.
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#ifndef HEADER_FFX_H
#define HEADER_FFX_H

#include <string.h>
#include <openssl/aes.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
	int flag;
	AES_KEY key;
} FFX_CTX;

int  FFX_init(FFX_CTX *ctx, int flag, const unsigned char *key, int keybits);
void FFX_cleanup(FFX_CTX *ctx);
int  FFX_encrypt(FFX_CTX *ctx, const char *in, size_t inlen,
	const unsigned char *tweak, size_t tweaklen, char *out);
int  FFX_decrypt(FFX_CTX *ctx, const char *in, size_t inlen,
	const unsigned char *tweak, size_t tweaklen, char *out);
int  FFX_compute_luhn(const char *in, size_t inlen);


/* BEGIN ERROR CODES */
/*
 * The following lines are auto generated by the script mkerr.pl. Any changes
 * made after this point may be overwritten when the script is next run.
 */
void ERR_load_FFX_strings(void);

/* Error codes for the FFX functions. */

/* Function codes. */
# define FFX_F_FFX_COMPUTE_LUHN                           100
# define FFX_F_FFX_DECRYPT                                101
# define FFX_F_FFX_ENCRYPT                                102
# define FFX_F_FFX_INIT                                   103

/* Reason codes. */
# define FFX_R_INIT_KEY_FAILED                            100
# define FFX_R_INVALID_DIGITS_FORMAT                      101
# define FFX_R_INVALID_DIGITS_LENGTH                      102
# define FFX_R_INVALID_DIGIT_STRING                       103
# define FFX_R_INVALID_TWEAK_LENGTH                       104

#ifdef  __cplusplus
}
#endif
#endif