static void
test_crypto_pwbox(void *arg)
{
uint8_t *boxed=NULL, *decoded=NULL;
size_t len, dlen;
unsigned i;
const char msg[] = "This bunny reminds you that you still have a "
"salamander in your sylladex. She is holding the bunny Dave got you. "
"It’s sort of uncanny how similar they are, aside from the knitted "
"enhancements. Seriously, what are the odds?? So weird.";
const char pw[] = "I'm a night owl and a wise bird too";
const unsigned flags[] = { 0,
S2K_FLAG_NO_SCRYPT,
S2K_FLAG_LOW_MEM,
S2K_FLAG_NO_SCRYPT|S2K_FLAG_LOW_MEM,
S2K_FLAG_USE_PBKDF2 };
(void)arg;
for (i = 0; i < ARRAY_LENGTH(flags); ++i) {
tt_int_op(0, OP_EQ, crypto_pwbox(&boxed, &len,
(const uint8_t*)msg, strlen(msg),
pw, strlen(pw), flags[i]));
tt_assert(boxed);
tt_assert(len > 128+32);
tt_int_op(0, OP_EQ, crypto_unpwbox(&decoded, &dlen, boxed, len,
pw, strlen(pw)));
tt_assert(decoded);
tt_uint_op(dlen, OP_EQ, strlen(msg));
tt_mem_op(decoded, OP_EQ, msg, dlen);
tor_free(decoded);
tt_int_op(UNPWBOX_BAD_SECRET, OP_EQ, crypto_unpwbox(&decoded, &dlen,
boxed, len,
pw, strlen(pw)-1));
boxed[len-1] ^= 1;
tt_int_op(UNPWBOX_BAD_SECRET, OP_EQ, crypto_unpwbox(&decoded, &dlen,
boxed, len,
pw, strlen(pw)));
boxed[0] = 255;
tt_int_op(UNPWBOX_CORRUPTED, OP_EQ, crypto_unpwbox(&decoded, &dlen,
boxed, len,
pw, strlen(pw)));
tor_free(boxed);
}
done:
tor_free(boxed);
tor_free(decoded);
}
int
write_encrypted_secret_key(const ed25519_secret_key_t *key,
const char *fname)
{
int r = -1;
char pwbuf0[256];
uint8_t *encrypted_key = NULL;
size_t encrypted_len = 0;
if (do_getpass("Enter new passphrase:", pwbuf0, sizeof(pwbuf0), 1,
get_options()) < 0) {
log_warn(LD_OR, "NO/failed passphrase");
return -1;
}
if (strlen(pwbuf0) == 0) {
if (get_options()->keygen_force_passphrase == FORCE_PASSPHRASE_ON)
return -1;
else
return 0;
}
if (crypto_pwbox(&encrypted_key, &encrypted_len,
key->seckey, sizeof(key->seckey),
pwbuf0, strlen(pwbuf0), 0) < 0) {
log_warn(LD_OR, "crypto_pwbox failed!?");
goto done;
}
if (crypto_write_tagged_contents_to_file(fname,
ENC_KEY_HEADER,
ENC_KEY_TAG,
encrypted_key, encrypted_len) < 0)
goto done;
r = 1;
done:
if (encrypted_key) {
memwipe(encrypted_key, 0, encrypted_len);
tor_free(encrypted_key);
}
memwipe(pwbuf0, 0, sizeof(pwbuf0));
return r;
}