xref: /openssh-portable/ge25519.h (revision 51b082cc)
1 /* $OpenBSD: ge25519.h,v 1.4 2015/02/16 18:26:26 miod 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/ge25519.h
7  */
8 
9 #ifndef GE25519_H
10 #define GE25519_H
11 
12 #include "fe25519.h"
13 #include "sc25519.h"
14 
15 #define ge25519                           crypto_sign_ed25519_ref_ge25519
16 #define ge25519_base                      crypto_sign_ed25519_ref_ge25519_base
17 #define ge25519_unpackneg_vartime         crypto_sign_ed25519_ref_unpackneg_vartime
18 #define ge25519_pack                      crypto_sign_ed25519_ref_pack
19 #define ge25519_isneutral_vartime         crypto_sign_ed25519_ref_isneutral_vartime
20 #define ge25519_double_scalarmult_vartime crypto_sign_ed25519_ref_double_scalarmult_vartime
21 #define ge25519_scalarmult_base           crypto_sign_ed25519_ref_scalarmult_base
22 
23 typedef struct
24 {
25   fe25519 x;
26   fe25519 y;
27   fe25519 z;
28   fe25519 t;
29 } ge25519;
30 
31 extern const ge25519 ge25519_base;
32 
33 int ge25519_unpackneg_vartime(ge25519 *r, const unsigned char p[32]);
34 
35 void ge25519_pack(unsigned char r[32], const ge25519 *p);
36 
37 int ge25519_isneutral_vartime(const ge25519 *p);
38 
39 void ge25519_double_scalarmult_vartime(ge25519 *r, const ge25519 *p1, const sc25519 *s1, const ge25519 *p2, const sc25519 *s2);
40 
41 void ge25519_scalarmult_base(ge25519 *r, const sc25519 *s);
42 
43 #endif
44