go-ethereum/crypto/secp256k1/libsecp256k1/src/precomputed_ecmult.h
Marius van der Wijden 5606cbc710
crypto/secp256k1: update libsecp256k1 (#31242)
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)
```
2025-03-12 12:21:50 +01:00

38 lines
1.5 KiB
C

/*****************************************************************************************************
* Copyright (c) 2013, 2014, 2017, 2021 Pieter Wuille, Andrew Poelstra, Jonas Nick, Russell O'Connor *
* Distributed under the MIT software license, see the accompanying *
* file COPYING or https://www.opensource.org/licenses/mit-license.php. *
*****************************************************************************************************/
#ifndef SECP256K1_PRECOMPUTED_ECMULT_H
#define SECP256K1_PRECOMPUTED_ECMULT_H
#ifdef __cplusplus
extern "C" {
#endif
#include "ecmult.h"
#include "group.h"
#if defined(EXHAUSTIVE_TEST_ORDER)
# if EXHAUSTIVE_TEST_ORDER == 7
# define WINDOW_G 3
# elif EXHAUSTIVE_TEST_ORDER == 13
# define WINDOW_G 4
# elif EXHAUSTIVE_TEST_ORDER == 199
# define WINDOW_G 8
# else
# error No known generator for the specified exhaustive test group order.
# endif
static secp256k1_ge_storage secp256k1_pre_g[ECMULT_TABLE_SIZE(WINDOW_G)];
static secp256k1_ge_storage secp256k1_pre_g_128[ECMULT_TABLE_SIZE(WINDOW_G)];
#else /* !defined(EXHAUSTIVE_TEST_ORDER) */
# define WINDOW_G ECMULT_WINDOW_SIZE
extern const secp256k1_ge_storage secp256k1_pre_g[ECMULT_TABLE_SIZE(WINDOW_G)];
extern const secp256k1_ge_storage secp256k1_pre_g_128[ECMULT_TABLE_SIZE(WINDOW_G)];
#endif /* defined(EXHAUSTIVE_TEST_ORDER) */
#ifdef __cplusplus
}
#endif
#endif /* SECP256K1_PRECOMPUTED_ECMULT_H */