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https://github.com/ethereum/go-ethereum.git
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5606cbc710
Updates the libsecp256k1 dependency to commit: c0d9480fbbf8eccbd4be23ed27f6f2af6f3b211e PR: ``` BenchmarkSign-24 57756 21214 ns/op 164 B/op 3 allocs/op BenchmarkRecover-24 37156 33044 ns/op 80 B/op 1 allocs/op BenchmarkEcrecoverSignature-24 36889 32935 ns/op 80 B/op 1 allocs/op BenchmarkVerifySignature-24 41163 29207 ns/op 0 B/op 0 allocs/op BenchmarkDecompressPubkey-24 318624 4062 ns/op 304 B/op 6 allocs/op ``` Master: ``` BenchmarkSign-24 34509 35330 ns/op 164 B/op 3 allocs/op BenchmarkRecover-24 25418 47725 ns/op 80 B/op 1 allocs/op BenchmarkEcrecoverSignature-24 25735 47591 ns/op 80 B/op 1 allocs/op BenchmarkVerifySignature-24 29108 41097 ns/op 0 B/op 0 allocs/op BenchmarkDecompressPubkey-24 294747 4143 ns/op 304 B/op 6 allocs/op ``` Performance seems to be improved significantly: ``` Sign-24 34.86µ ± 3% 21.66µ ± 2% -37.86% (p=0.000 n=10) Recover-24 46.14µ ± 3% 33.24µ ± 2% -27.95% (p=0.000 n=10) ```
49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
/*****************************************************************************************************
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* Copyright (c) 2013, 2014, 2017, 2021 Pieter Wuille, Andrew Poelstra, Jonas Nick, Russell O'Connor *
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* Distributed under the MIT software license, see the accompanying *
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* file COPYING or https://www.opensource.org/licenses/mit-license.php. *
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*****************************************************************************************************/
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#ifndef SECP256K1_ECMULT_COMPUTE_TABLE_IMPL_H
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#define SECP256K1_ECMULT_COMPUTE_TABLE_IMPL_H
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#include "ecmult_compute_table.h"
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#include "group_impl.h"
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#include "field_impl.h"
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#include "ecmult.h"
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#include "util.h"
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static void secp256k1_ecmult_compute_table(secp256k1_ge_storage* table, int window_g, const secp256k1_gej* gen) {
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secp256k1_gej gj;
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secp256k1_ge ge, dgen;
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int j;
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gj = *gen;
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secp256k1_ge_set_gej_var(&ge, &gj);
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secp256k1_ge_to_storage(&table[0], &ge);
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secp256k1_gej_double_var(&gj, gen, NULL);
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secp256k1_ge_set_gej_var(&dgen, &gj);
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for (j = 1; j < ECMULT_TABLE_SIZE(window_g); ++j) {
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secp256k1_gej_set_ge(&gj, &ge);
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secp256k1_gej_add_ge_var(&gj, &gj, &dgen, NULL);
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secp256k1_ge_set_gej_var(&ge, &gj);
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secp256k1_ge_to_storage(&table[j], &ge);
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}
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}
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/* Like secp256k1_ecmult_compute_table, but one for both gen and gen*2^128. */
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static void secp256k1_ecmult_compute_two_tables(secp256k1_ge_storage* table, secp256k1_ge_storage* table_128, int window_g, const secp256k1_ge* gen) {
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secp256k1_gej gj;
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int i;
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secp256k1_gej_set_ge(&gj, gen);
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secp256k1_ecmult_compute_table(table, window_g, &gj);
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for (i = 0; i < 128; ++i) {
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secp256k1_gej_double_var(&gj, &gj, NULL);
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}
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secp256k1_ecmult_compute_table(table_128, window_g, &gj);
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}
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#endif /* SECP256K1_ECMULT_COMPUTE_TABLE_IMPL_H */
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