Add benchmark for key generation

Author: sipa

src/bench.c

@@ -38,6 +38,8 @@ static void help(int default_iters) {
     printf("    ecdsa             : all ECDSA algorithms--sign, verify, recovery (if enabled)\n");
     printf("    ecdsa_sign        : ECDSA siging algorithm\n");
     printf("    ecdsa_verify      : ECDSA verification algorithm\n");
+    printf("    ec                : all EC public key algorithms (keygen)\n");
+    printf("    ec_keygen         : EC public key generation\n");
 
 #ifdef ENABLE_MODULE_RECOVERY
     printf("    ecdsa_recover     : ECDSA public key recovery algorithm\n");
@@ -115,6 +117,30 @@ static void bench_sign_run(void* arg, int iters) {
     }
 }
 
+static void bench_keygen_setup(void* arg) {
+    int i;
+    bench_data *data = (bench_data*)arg;
+
+    for (i = 0; i < 32; i++) {
+        data->key[i] = i + 65;
+    }
+}
+
+static void bench_keygen_run(void *arg, int iters) {
+    int i;
+    bench_data *data = (bench_data*)arg;
+
+    for (i = 0; i < iters; i++) {
+        unsigned char pub33[33];
+        size_t len = 33;
+        secp256k1_pubkey pubkey;
+        CHECK(secp256k1_ec_pubkey_create(data->ctx, &pubkey, data->key));
+        CHECK(secp256k1_ec_pubkey_serialize(data->ctx, pub33, &len, &pubkey, SECP256K1_EC_COMPRESSED));
+        memcpy(data->key, pub33 + 1, 32);
+    }
+}
+
+
 #ifdef ENABLE_MODULE_ECDH
 # include "modules/ecdh/bench_impl.h"
 #endif
@@ -139,7 +165,8 @@ int main(int argc, char** argv) {
 
     /* Check for invalid user arguments */
     char* valid_args[] = {"ecdsa", "verify", "ecdsa_verify", "sign", "ecdsa_sign", "ecdh", "recover",
-                         "ecdsa_recover", "schnorrsig", "schnorrsig_verify", "schnorrsig_sign"};
+                         "ecdsa_recover", "schnorrsig", "schnorrsig_verify", "schnorrsig_sign", "ec",
+                         "keygen", "ec_keygen"};
     size_t valid_args_size = sizeof(valid_args)/sizeof(valid_args[0]);
     int invalid_args = have_invalid_args(argc, argv, valid_args, valid_args_size);
 
@@ -201,6 +228,7 @@ int main(int argc, char** argv) {
     if (d || have_flag(argc, argv, "ecdsa") || have_flag(argc, argv, "verify") || have_flag(argc, argv, "ecdsa_verify")) run_benchmark("ecdsa_verify", bench_verify, NULL, NULL, &data, 10, iters);
 
     if (d || have_flag(argc, argv, "ecdsa") || have_flag(argc, argv, "sign") || have_flag(argc, argv, "ecdsa_sign")) run_benchmark("ecdsa_sign", bench_sign_run, bench_sign_setup, NULL, &data, 10, iters);
+    if (d || have_flag(argc, argv, "ec") || have_flag(argc, argv, "keygen") || have_flag(argc, argv, "ec_keygen")) run_benchmark("ec_keygen", bench_keygen_run, bench_keygen_setup, NULL, &data, 10, iters);
 
     secp256k1_context_destroy(data.ctx);