/* Given <b>commit</b> give the line that we should place in our votes.
* It's the responsibility of the caller to free the string. */
static char *
get_vote_line_from_commit(const sr_commit_t *commit, sr_phase_t phase)
{
char *vote_line = NULL;
switch (phase) {
case SR_PHASE_COMMIT:
tor_asprintf(&vote_line, "%s %u %s %s %s\n",
commit_ns_str,
SR_PROTO_VERSION,
crypto_digest_algorithm_get_name(commit->alg),
sr_commit_get_rsa_fpr(commit),
commit->encoded_commit);
break;
case SR_PHASE_REVEAL:
{
/* Send a reveal value for this commit if we have one. */
const char *reveal_str = commit->encoded_reveal;
if (tor_mem_is_zero(commit->encoded_reveal,
sizeof(commit->encoded_reveal))) {
reveal_str = "";
}
tor_asprintf(&vote_line, "%s %u %s %s %s %s\n",
commit_ns_str,
SR_PROTO_VERSION,
crypto_digest_algorithm_get_name(commit->alg),
sr_commit_get_rsa_fpr(commit),
commit->encoded_commit, reveal_str);
break;
}
default:
tor_assert(0);
}
log_debug(LD_DIR, "SR: Commit vote line: %s", vote_line);
return vote_line;
}
static void
bench_digest(void)
{
char buf[8192];
char out[DIGEST512_LEN];
const int lens[] = { 1, 16, 32, 64, 128, 512, 1024, 2048, -1 };
const int N = 300000;
uint64_t start, end;
crypto_rand(buf, sizeof(buf));
for (int alg = 0; alg < N_DIGEST_ALGORITHMS; alg++) {
for (int i = 0; lens[i] > 0; ++i) {
reset_perftime();
start = perftime();
for (int j = 0; j < N; ++j) {
switch (alg) {
case DIGEST_SHA1:
crypto_digest(out, buf, lens[i]);
break;
case DIGEST_SHA256:
case DIGEST_SHA3_256:
crypto_digest256(out, buf, lens[i], alg);
break;
case DIGEST_SHA512:
case DIGEST_SHA3_512:
crypto_digest512(out, buf, lens[i], alg);
break;
default:
tor_assert(0);
}
}
end = perftime();
printf("%s(%d): %.2f ns per call\n",
crypto_digest_algorithm_get_name(alg),
lens[i], NANOCOUNT(start,end,N));
}
}
}
/* From a valid commit object and an allocated config line, set the line's
* value to the state string representation of a commit. */
static void
disk_state_put_commit_line(const sr_commit_t *commit, config_line_t *line)
{
char *reveal_str = NULL;
tor_assert(commit);
tor_assert(line);
if (!tor_mem_is_zero(commit->encoded_reveal,
sizeof(commit->encoded_reveal))) {
/* Add extra whitespace so we can format the line correctly. */
tor_asprintf(&reveal_str, " %s", commit->encoded_reveal);
}
tor_asprintf(&line->value, "%u %s %s %s%s",
SR_PROTO_VERSION,
crypto_digest_algorithm_get_name(commit->alg),
sr_commit_get_rsa_fpr(commit),
commit->encoded_commit,
reveal_str != NULL ? reveal_str : "");
if (reveal_str != NULL) {
memwipe(reveal_str, 0, strlen(reveal_str));
tor_free(reveal_str);
}
}
