1  /***********************************************************************
 2   * Copyright (c) 2015 Pieter Wuille, Andrew Poelstra                   *
 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_MODULE_ECDH_BENCH_H
 8  #define SECP256K1_MODULE_ECDH_BENCH_H
 9  
10  #include "../../../include/secp256k1_ecdh.h"
11  
12  typedef struct {
13      const secp256k1_context *ctx;
14      secp256k1_pubkey point;
15      unsigned char scalar[32];
16  } bench_ecdh_data;
17  
18  static void bench_ecdh_setup(void* arg) {
19      int i;
20      bench_ecdh_data *data = (bench_ecdh_data*)arg;
21      const unsigned char point[] = {
22          0x03,
23          0x54, 0x94, 0xc1, 0x5d, 0x32, 0x09, 0x97, 0x06,
24          0xc2, 0x39, 0x5f, 0x94, 0x34, 0x87, 0x45, 0xfd,
25          0x75, 0x7c, 0xe3, 0x0e, 0x4e, 0x8c, 0x90, 0xfb,
26          0xa2, 0xba, 0xd1, 0x84, 0xf8, 0x83, 0xc6, 0x9f
27      };
28  
29      for (i = 0; i < 32; i++) {
30          data->scalar[i] = i + 1;
31      }
32      CHECK(secp256k1_ec_pubkey_parse(data->ctx, &data->point, point, sizeof(point)) == 1);
33  }
34  
35  static void bench_ecdh(void* arg, int iters) {
36      int i;
37      unsigned char res[32];
38      bench_ecdh_data *data = (bench_ecdh_data*)arg;
39  
40      for (i = 0; i < iters; i++) {
41          CHECK(secp256k1_ecdh(data->ctx, res, &data->point, data->scalar, NULL, NULL) == 1);
42      }
43  }
44  
45  static void run_ecdh_bench(int iters, int argc, char** argv) {
46      bench_ecdh_data data;
47      int d = argc == 1;
48  
49      data.ctx = secp256k1_context_static;
50  
51      if (d || have_flag(argc, argv, "ecdh")) run_benchmark("ecdh", bench_ecdh, bench_ecdh_setup, NULL, &data, 10, iters);
52  }
53  
54  #endif /* SECP256K1_MODULE_ECDH_BENCH_H */