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      1 /* $OpenBSD: fe25519.h,v 1.3 2013/12/09 11:03:45 markus Exp $ */
      2 
      3 /*
      4  * Public Domain, Authors: Daniel J. Bernstein, Niels Duif, Tanja Lange,
      5  * Peter Schwabe, Bo-Yin Yang.
      6  * Copied from supercop-20130419/crypto_sign/ed25519/ref/fe25519.h
      7  */
      8 
      9 #ifndef FE25519_H
     10 #define FE25519_H
     11 
     12 #include "crypto_api.h"
     13 
     14 #define fe25519              crypto_sign_ed25519_ref_fe25519
     15 #define fe25519_freeze       crypto_sign_ed25519_ref_fe25519_freeze
     16 #define fe25519_unpack       crypto_sign_ed25519_ref_fe25519_unpack
     17 #define fe25519_pack         crypto_sign_ed25519_ref_fe25519_pack
     18 #define fe25519_iszero       crypto_sign_ed25519_ref_fe25519_iszero
     19 #define fe25519_iseq_vartime crypto_sign_ed25519_ref_fe25519_iseq_vartime
     20 #define fe25519_cmov         crypto_sign_ed25519_ref_fe25519_cmov
     21 #define fe25519_setone       crypto_sign_ed25519_ref_fe25519_setone
     22 #define fe25519_setzero      crypto_sign_ed25519_ref_fe25519_setzero
     23 #define fe25519_neg          crypto_sign_ed25519_ref_fe25519_neg
     24 #define fe25519_getparity    crypto_sign_ed25519_ref_fe25519_getparity
     25 #define fe25519_add          crypto_sign_ed25519_ref_fe25519_add
     26 #define fe25519_sub          crypto_sign_ed25519_ref_fe25519_sub
     27 #define fe25519_mul          crypto_sign_ed25519_ref_fe25519_mul
     28 #define fe25519_square       crypto_sign_ed25519_ref_fe25519_square
     29 #define fe25519_invert       crypto_sign_ed25519_ref_fe25519_invert
     30 #define fe25519_pow2523      crypto_sign_ed25519_ref_fe25519_pow2523
     31 
     32 typedef struct
     33 {
     34   crypto_uint32 v[32];
     35 }
     36 fe25519;
     37 
     38 void fe25519_freeze(fe25519 *r);
     39 
     40 void fe25519_unpack(fe25519 *r, const unsigned char x[32]);
     41 
     42 void fe25519_pack(unsigned char r[32], const fe25519 *x);
     43 
     44 int fe25519_iszero(const fe25519 *x);
     45 
     46 int fe25519_iseq_vartime(const fe25519 *x, const fe25519 *y);
     47 
     48 void fe25519_cmov(fe25519 *r, const fe25519 *x, unsigned char b);
     49 
     50 void fe25519_setone(fe25519 *r);
     51 
     52 void fe25519_setzero(fe25519 *r);
     53 
     54 void fe25519_neg(fe25519 *r, const fe25519 *x);
     55 
     56 unsigned char fe25519_getparity(const fe25519 *x);
     57 
     58 void fe25519_add(fe25519 *r, const fe25519 *x, const fe25519 *y);
     59 
     60 void fe25519_sub(fe25519 *r, const fe25519 *x, const fe25519 *y);
     61 
     62 void fe25519_mul(fe25519 *r, const fe25519 *x, const fe25519 *y);
     63 
     64 void fe25519_square(fe25519 *r, const fe25519 *x);
     65 
     66 void fe25519_invert(fe25519 *r, const fe25519 *x);
     67 
     68 void fe25519_pow2523(fe25519 *r, const fe25519 *x);
     69 
     70 #endif
     71