Fabcoin Core  0.16.2
P2P Digital Currency
ecmult.h
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1 /**********************************************************************
2  * Copyright (c) 2013, 2014 Pieter Wuille *
3  * Distributed under the MIT software license, see the accompanying *
4  * file COPYING or http://www.opensource.org/licenses/mit-license.php.*
5  **********************************************************************/
6 
7 #ifndef SECP256K1_ECMULT_H
8 #define SECP256K1_ECMULT_H
9 
10 #include "num.h"
11 #include "group.h"
12 
13 typedef struct {
14  /* For accelerating the computation of a*P + b*G: */
15  secp256k1_ge_storage (*pre_g)[]; /* odd multiples of the generator */
16 #ifdef USE_ENDOMORPHISM
17  secp256k1_ge_storage (*pre_g_128)[]; /* odd multiples of 2^128*generator */
18 #endif
20 
21 static void secp256k1_ecmult_context_init(secp256k1_ecmult_context *ctx);
22 static void secp256k1_ecmult_context_build(secp256k1_ecmult_context *ctx, const secp256k1_callback *cb);
23 static void secp256k1_ecmult_context_clone(secp256k1_ecmult_context *dst,
24  const secp256k1_ecmult_context *src, const secp256k1_callback *cb);
25 static void secp256k1_ecmult_context_clear(secp256k1_ecmult_context *ctx);
26 static int secp256k1_ecmult_context_is_built(const secp256k1_ecmult_context *ctx);
27 
29 static void secp256k1_ecmult(const secp256k1_ecmult_context *ctx, secp256k1_gej *r, const secp256k1_gej *a, const secp256k1_scalar *na, const secp256k1_scalar *ng);
30 
31 #endif /* SECP256K1_ECMULT_H */
A group element of the secp256k1 curve, in jacobian coordinates.
Definition: group.h:24
#define a(i)
A scalar modulo the group order of the secp256k1 curve.
Definition: scalar_4x64.h:13