ÿØÿàJFIFÿþ ÿÛC       ÿÛC ÿÀÿÄÿÄ"#QrÿÄÿÄ&1!A"2qQaáÿÚ ?Øy,æ/3JæݹÈ߲؋5êXw²±ÉyˆR”¾I0ó2—PI¾IÌÚiMö¯–þrìN&"KgX:Šíµ•nTJnLK„…@!‰-ý ùúmë;ºgµŒ&ó±hw’¯Õ@”Ü— 9ñ-ë.²1<yà‚¹ïQÐU„ہ?.’¦èûbß±©Ö«Âw*VŒ) `$‰bØԟ’ëXÖ-ËTÜíGÚ3ð«g Ÿ§¯—Jx„–’U/ÂÅv_s(Hÿ@TñJÑãõçn­‚!ÈgfbÓc­:él[ðQe 9ÀPLbÃãCµm[5¿ç'ªjglå‡Ûí_§Úõl-;"PkÞÞÁQâ¼_Ñ^¢SŸx?"¸¦ùY騐ÒOÈ q’`~~ÚtËU¹CڒêV  I1Áß_ÿÙ""" The `compat` module provides support for backwards compatibility with older versions of python, and compatibility wrappers around optional packages. """ # flake8: noqa import hmac import struct import sys PY3 = sys.version_info[0] == 3 if PY3: text_type = str binary_type = bytes else: text_type = unicode binary_type = str string_types = (text_type, binary_type) try: constant_time_compare = hmac.compare_digest except AttributeError: # Fallback for Python < 2.7 def constant_time_compare(val1, val2): """ Returns True if the two strings are equal, False otherwise. The time taken is independent of the number of characters that match. """ if len(val1) != len(val2): return False result = 0 for x, y in zip(val1, val2): result |= ord(x) ^ ord(y) return result == 0 # Use int.to_bytes if it exists (Python 3) if getattr(int, 'to_bytes', None): def bytes_from_int(val): remaining = val byte_length = 0 while remaining != 0: remaining = remaining >> 8 byte_length += 1 return val.to_bytes(byte_length, 'big', signed=False) else: def bytes_from_int(val): buf = [] while val: val, remainder = divmod(val, 256) buf.append(remainder) buf.reverse() return struct.pack('%sB' % len(buf), *buf)