| Server IP : 127.0.0.2 / Your IP : 18.227.89.143 Web Server : Apache/2.4.18 (Ubuntu) System : User : www-data ( ) PHP Version : 7.0.33-0ubuntu0.16.04.16 Disable Function : disk_free_space,disk_total_space,diskfreespace,dl,exec,fpaththru,getmyuid,getmypid,highlight_file,ignore_user_abord,leak,listen,link,opcache_get_configuration,opcache_get_status,passthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,php_uname,phpinfo,posix_ctermid,posix_getcwd,posix_getegid,posix_geteuid,posix_getgid,posix_getgrgid,posix_getgrnam,posix_getgroups,posix_getlogin,posix_getpgid,posix_getpgrp,posix_getpid,posix,_getppid,posix_getpwnam,posix_getpwuid,posix_getrlimit,posix_getsid,posix_getuid,posix_isatty,posix_kill,posix_mkfifo,posix_setegid,posix_seteuid,posix_setgid,posix_setpgid,posix_setsid,posix_setuid,posix_times,posix_ttyname,posix_uname,pclose,popen,proc_open,proc_close,proc_get_status,proc_nice,proc_terminate,shell_exec,source,show_source,system,virtual MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/lib/python2.7/dist-packages/ecdsa/ |
Upload File : |
# compatibility with Python 2.6, for that we need unittest2 package,
# which is not available on 3.3 or 3.4
try:
import unittest2 as unittest
except ImportError:
import unittest
from .der import remove_integer, UnexpectedDER, read_length
from six import b
class TestRemoveInteger(unittest.TestCase):
# DER requires the integers to be 0-padded only if they would be
# interpreted as negative, check if those errors are detected
def test_non_minimal_encoding(self):
with self.assertRaises(UnexpectedDER):
remove_integer(b('\x02\x02\x00\x01'))
def test_negative_with_high_bit_set(self):
with self.assertRaises(UnexpectedDER):
remove_integer(b('\x02\x01\x80'))
def test_two_zero_bytes_with_high_bit_set(self):
with self.assertRaises(UnexpectedDER):
remove_integer(b('\x02\x03\x00\x00\xff'))
def test_zero_length_integer(self):
with self.assertRaises(UnexpectedDER):
remove_integer(b('\x02\x00'))
def test_empty_string(self):
with self.assertRaises(UnexpectedDER):
remove_integer(b(''))
def test_encoding_of_zero(self):
val, rem = remove_integer(b('\x02\x01\x00'))
self.assertEqual(val, 0)
self.assertFalse(rem)
def test_encoding_of_127(self):
val, rem = remove_integer(b('\x02\x01\x7f'))
self.assertEqual(val, 127)
self.assertFalse(rem)
def test_encoding_of_128(self):
val, rem = remove_integer(b('\x02\x02\x00\x80'))
self.assertEqual(val, 128)
self.assertFalse(rem)
class TestReadLength(unittest.TestCase):
# DER requires the lengths between 0 and 127 to be encoded using the short
# form and lengths above that encoded with minimal number of bytes
# necessary
def test_zero_length(self):
self.assertEqual((0, 1), read_length(b('\x00')))
def test_two_byte_zero_length(self):
with self.assertRaises(UnexpectedDER):
read_length(b('\x81\x00'))
def test_two_byte_small_length(self):
with self.assertRaises(UnexpectedDER):
read_length(b('\x81\x7f'))
def test_long_form_with_zero_length(self):
with self.assertRaises(UnexpectedDER):
read_length(b('\x80'))
def test_smallest_two_byte_length(self):
self.assertEqual((128, 2), read_length(b('\x81\x80')))
def test_zero_padded_length(self):
with self.assertRaises(UnexpectedDER):
read_length(b('\x82\x00\x80'))
def test_two_three_byte_length(self):
self.assertEqual((256, 3), read_length(b'\x82\x01\x00'))
def test_empty_string(self):
with self.assertRaises(UnexpectedDER):
read_length(b(''))
def test_length_overflow(self):
with self.assertRaises(UnexpectedDER):
read_length(b('\x83\x01\x00'))