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Add simple cipher benchmarking.

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Milan Broz
2012-11-08 16:36:00 +01:00
parent 7199662fbb
commit db97d3d8c8
8 changed files with 342 additions and 4 deletions
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83
src/cryptsetup.c
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@@ -60,6 +60,7 @@ static int action_create(int arg);
static int action_remove(int arg);
static int action_resize(int arg);
static int action_status(int arg);
static int action_benchmark(int arg);
static int action_luksFormat(int arg);
static int action_luksOpen(int arg);
static int action_luksAddKey(int arg);
@@ -89,6 +90,7 @@ static struct action_type {
{ "remove", action_remove, 0, 1, 1, N_("<name>"), N_("remove device") },
{ "resize", action_resize, 0, 1, 1, N_("<name>"), N_("resize active device") },
{ "status", action_status, 0, 1, 0, N_("<name>"), N_("show device status") },
{ "benchmark", action_benchmark, 0, 0, 0, N_("<name>"), N_("benchmark cipher") },
{ "repair", action_luksRepair, 0, 1, 1, N_("<device>"), N_("try to repair on-disk metadata") },
{ "luksFormat", action_luksFormat, 0, 1, 1, N_("<device> [<new key file>]"), N_("formats a LUKS device") },
{ "luksOpen", action_luksOpen, 0, 2, 1, N_("<device> <name> "), N_("open LUKS device as mapping <name>") },
@@ -346,6 +348,82 @@ out:
return r;
}
static int action_benchmark(int arg __attribute__((unused)))
{
static struct {
char *cipher;
char *mode;
size_t key_size;
size_t iv_size;
} bciphers[] = {
{ "aes", "cbc", 16, 16 },
{ "serpent", "cbc", 16, 16 },
{ "twofish", "cbc", 16, 16 },
{ "aes", "cbc", 32, 16 },
{ "serpent", "cbc", 32, 16 },
{ "twofish", "cbc", 32, 16 },
{ "aes", "xts", 32, 16 },
{ "serpent", "xts", 32, 16 },
{ "twofish", "xts", 32, 16 },
{ "aes", "xts", 64, 16 },
{ "serpent", "xts", 64, 16 },
{ "twofish", "xts", 64, 16 },
{ NULL, NULL, 0, 0 }
};
char *header = "# Tests are approximate using memory only (no storage IO).\n"
"# Algorithm | Key | Encryption | Decryption\n";
char cipher[MAX_CIPHER_LEN], cipher_mode[MAX_CIPHER_LEN];
double enc_mbr = 0, dec_mbr = 0;
int key_size = (opt_key_size ?: DEFAULT_PLAIN_KEYBITS);
int iv_size = 16;
int buffer_size = 1024 * 1024;
char *c;
int i, r;
if (opt_cipher) {
r = crypt_parse_name_and_mode(opt_cipher, cipher, NULL, cipher_mode);
if (r < 0) {
log_err(_("No known cipher specification pattern detected.\n"));
return r;
}
if ((c = strchr(cipher_mode, '-')))
*c = '\0';
/* FIXME: not really clever :) */
if (strstr(cipher, "des"))
iv_size = 8;
r = crypt_benchmark(NULL, cipher, cipher_mode,
key_size / 8, iv_size, buffer_size,
&enc_mbr, &dec_mbr);
if (!r) {
log_std("%s", header);
strncat(cipher, "-", MAX_CIPHER_LEN);
strncat(cipher, cipher_mode, MAX_CIPHER_LEN);
log_std("%11s %4db %5.1f MiB/s %5.1f MiB/s\n",
cipher, key_size, enc_mbr, dec_mbr);
} else
log_err(_("Cannot benchmark %s.\n"), cipher);
} else {
log_std("%s", header);
for (i = 0; bciphers[i].cipher; i++) {
r = crypt_benchmark(NULL, bciphers[i].cipher, bciphers[i].mode,
bciphers[i].key_size, bciphers[i].iv_size,
buffer_size, &enc_mbr, &dec_mbr);
snprintf(cipher, MAX_CIPHER_LEN, "%s-%s",
bciphers[i].cipher, bciphers[i].mode);
if (!r)
log_std("%11s %4db %5.1f MiB/s %5.1f MiB/s\n",
cipher, bciphers[i].key_size*8, enc_mbr, dec_mbr);
else
log_std("%11s %4db %12s %12s\n", cipher,
bciphers[i].key_size*8, _("N/A"), _("N/A"));
}
}
return r;
}
static int _read_mk(const char *file, char **key, int keysize)
{
int fd;
@@ -1221,9 +1299,10 @@ int main(int argc, const char **argv)
if (opt_key_size &&
strcmp(aname, "luksFormat") &&
strcmp(aname, "create") &&
strcmp(aname, "loopaesOpen"))
strcmp(aname, "loopaesOpen") &&
strcmp(aname, "benchmark"))
usage(popt_context, EXIT_FAILURE,
_("Option --key-size is allowed only for luksFormat, create and loopaesOpen.\n"
_("Option --key-size is allowed only for luksFormat, create, loopaesOpen and benchmark.\n"
"To limit read from keyfile use --keyfile-size=(bytes)."),
poptGetInvocationName(popt_context));