Bitcoin Core  22.99.0
P2P Digital Currency
ecmult_gen.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 https://www.opensource.org/licenses/mit-license.php.*
5  ***********************************************************************/
6 
7 #ifndef SECP256K1_ECMULT_GEN_H
8 #define SECP256K1_ECMULT_GEN_H
9 
10 #include "scalar.h"
11 #include "group.h"
12 
13 #if ECMULT_GEN_PREC_BITS != 2 && ECMULT_GEN_PREC_BITS != 4 && ECMULT_GEN_PREC_BITS != 8
14 # error "Set ECMULT_GEN_PREC_BITS to 2, 4 or 8."
15 #endif
16 #define ECMULT_GEN_PREC_G(bits) (1 << bits)
17 #define ECMULT_GEN_PREC_N(bits) (256 / bits)
18 
19 typedef struct {
20  /* Whether the context has been built. */
21  int built;
22 
23  /* Blinding values used when computing (n-b)G + bG. */
27 
30 
33 
34 static void secp256k1_ecmult_gen_blind(secp256k1_ecmult_gen_context *ctx, const unsigned char *seed32);
35 
36 #endif /* SECP256K1_ECMULT_GEN_H */
secp256k1_ecmult_gen_blind
static void secp256k1_ecmult_gen_blind(secp256k1_ecmult_gen_context *ctx, const unsigned char *seed32)
group.h
secp256k1_ecmult_gen_context::built
int built
Definition: ecmult_gen.h:21
secp256k1_scalar
A scalar modulo the group order of the secp256k1 curve.
Definition: scalar_4x64.h:13
secp256k1_ecmult_gen
static void secp256k1_ecmult_gen(const secp256k1_ecmult_gen_context *ctx, secp256k1_gej *r, const secp256k1_scalar *a)
Multiply with the generator: R = a*G.
secp256k1_gej
A group element of the secp256k1 curve, in jacobian coordinates.
Definition: group.h:23
secp256k1_ecmult_gen_context
Definition: ecmult_gen.h:19
secp256k1_ecmult_gen_context_build
static void secp256k1_ecmult_gen_context_build(secp256k1_ecmult_gen_context *ctx)
secp256k1_ecmult_gen_context::initial
secp256k1_gej initial
Definition: ecmult_gen.h:25
scalar.h
secp256k1_ecmult_gen_context::blind
secp256k1_scalar blind
Definition: ecmult_gen.h:24
secp256k1_ecmult_gen_context_clear
static void secp256k1_ecmult_gen_context_clear(secp256k1_ecmult_gen_context *ctx)
ctx
static secp256k1_context * ctx
Definition: tests.c:32