cjdns/crypto/sign/fe.h

#ifndef FE_H
#define FE_H

#include "crypto_int32.h"

typedef crypto_int32 fe[10];

/*
fe means field element.
Here the field is \Z/(2^255-19).
An element t, entries t[0]...t[9], represents the integer
t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9].
Bounds on each t[i] vary depending on context.
*/

#define fe_frombytes cjdns_fe_frombytes
#define fe_tobytes cjdns_fe_tobytes
#define fe_copy cjdns_fe_copy
#define fe_isnonzero cjdns_fe_isnonzero
#define fe_isnegative cjdns_fe_isnegative
#define fe_0 cjdns_fe_0
#define fe_1 cjdns_fe_1
#define fe_cswap cjdns_fe_cswap
#define fe_cmov cjdns_fe_cmov
#define fe_add cjdns_fe_add
#define fe_sub cjdns_fe_sub
#define fe_neg cjdns_fe_neg
#define fe_mul cjdns_fe_mul
#define fe_sq cjdns_fe_sq
#define fe_sq2 cjdns_fe_sq2
#define fe_mul121666 cjdns_fe_mul121666
#define fe_invert cjdns_fe_invert
#define fe_pow22523 cjdns_fe_pow22523

extern void fe_frombytes(fe,const unsigned char *);
extern void fe_tobytes(unsigned char *,const fe);

extern void fe_copy(fe,const fe);
extern int fe_isnonzero(const fe);
extern int fe_isnegative(const fe);
extern void fe_0(fe);
extern void fe_1(fe);
extern void fe_cswap(fe,fe,unsigned int);
extern void fe_cmov(fe,const fe,unsigned int);

extern void fe_add(fe,const fe,const fe);
extern void fe_sub(fe,const fe,const fe);
extern void fe_neg(fe,const fe);
extern void fe_mul(fe,const fe,const fe);
extern void fe_sq(fe,const fe);
extern void fe_sq2(fe,const fe);
extern void fe_mul121666(fe,const fe);
extern void fe_invert(fe,const fe);
extern void fe_pow22523(fe,const fe);

#endif