// PureNoise CryptoLib (c) 1997-2004, PureNoise Ltd Vaduz <www.cryptolib.com>

#ifndef _crypto_convert_h_
#define _crypto_convert_h_

#include <crypto/crypto.h>

#define BYTES_TO_BASE_16(x)				(((x)*2  )  )
#define BASE_16_TO_BYTES(x)				(((x)  +1)/2)

#define BYTES_TO_BASE_64(x)				(((x)*4+2)/3)
#define BASE_64_TO_BYTES(x)				(((x)*3+3)/4)

//#define BYTES_TO_BASE_128(x)			(((x)*8+6)/7)
//#define BASE_128_TO_BYTES(x)			(((x)*7+7)/8)

#if defined (_MSC_VER)
	#pragma warning (push)
	#pragma warning (disable:4307)
#endif

#define BYTES_TO_BASE_94(x)				((long)((((__int64)x)-211238639UL)*257820765UL/211238639UL+257820765UL))
#define BASE_94_TO_BYTES(x)				((long)((((__int64)x)*211238639UL+257820764UL)/257820765UL))

#define BYTES_TO_BASE_222(x)			((long)((((__int64)x)-783967460UL)*804645247UL/783967460UL+804645247UL))
#define BASE_222_TO_BYTES(x)			((long)((((__int64)x)*783967460UL+804645246UL)/804645247UL))

//#define BYTES_TO_BASE_252(x)			((long)((((__int64)x)-2385844360UL)*2392639479UL/2385844360UL+2392639479UL))
//#define BASE_252_TO_BYTES(x)			((long)((((__int64)x)*2385844360UL+2392639478UL)/2392639479UL))

#define BYTES_TO_BASE_255(x)			((long)((((__int64)x)-957049251UL)*957725233UL/957049251UL+957725233UL))
#define BASE_255_TO_BYTES(x)			((long)((((__int64)x)*957049251UL+957725232UL)/957725233UL))

//#define BYTES_TO_CHARS(x,base)		((long)(-((base)==16)&BYTES_TO_BASE_16(x)|-((base)==64)&BYTES_TO_BASE_64(x)|-((base)==94)&BYTES_TO_BASE_94(x)|-((base)==128)&BYTES_TO_BASE_128(x)|-((base)==222)&BYTES_TO_BASE_222(x)|-((base)==252)&BYTES_TO_BASE_252(x)|-((base)==255)&BYTES_TO_BASE_255(x)))
//#define CHARS_TO_BYTES(x,base)		((long)(-((base)==16)&BASE_16_TO_BYTES(x)|-((base)==64)&BASE_64_TO_BYTES(x)|-((base)==94)&BASE_94_TO_BYTES(x)|-((base)==128)&BASE_128_TO_BYTES(x)|-((base)==222)&BASE_222_TO_BYTES(x)|-((base)==252)&BASE_252_TO_BYTES(x)|-((base)==255)&BASE_255_TO_BYTES(x)))

#if defined (_MSC_VER)
	#pragma warning (pop)
#endif

//EXTERN const unsigned char			BASE_16_CHARS[16];
EXTERN const unsigned char				BASE_64_CHARS[64];
//EXTERN const unsigned char			BASE_94_CHARS[94];
//EXTERN const unsigned char			BASE_128_CHARS[128];
//EXTERN const unsigned char			BASE_222_CHARS[222];
//EXTERN const unsigned char			BASE_252_CHARS[252];
//EXTERN const unsigned char			BASE_255_CHARS[255];
//EXTERN const unsigned char			BASE_16_DIGITS[0x100];
//EXTERN const unsigned char			BASE_64_DIGITS[0x100];
//EXTERN const unsigned char			BASE_94_DIGITS[0x100];
//EXTERN const unsigned char			BASE_128_DIGITS[0x100];
//EXTERN const unsigned char			BASE_222_DIGITS[0x100];
//EXTERN const unsigned char			BASE_252_DIGITS[0x100];
//EXTERN const unsigned char			BASE_255_DIGITS[0x100];

EXTERN unsigned char * big_to_str (const unsigned long *inbig, unsigned char *outstr, const unsigned char base, const unsigned long total_chars);
EXTERN unsigned long str_to_big (const unsigned char *instr, unsigned long *outbig, const unsigned char base, const unsigned long total_chars);
EXTERN unsigned char * bytes_to_str (const unsigned char *inbytes, unsigned char *outstr, const unsigned char base, const unsigned long nbytes);
EXTERN unsigned long str_to_bytes (const unsigned char *instr, unsigned char *outbytes, const unsigned char base, const unsigned long maxbytes);

#endif // _crypto_convert_h_