Remove third_party/twisted_8_1

third_party/twisted_8_1/twisted/conch/ssh/asn1.py

-# Copyright (c) 2001-2004 Twisted Matrix Laboratories.
-# See LICENSE for details.
-
-# 
-
-"""
-A basic ASN.1 parser to parse private SSH keys.
-
-Maintainer: U{Paul Swartz<mailto:z3p@twistedmatrix.com>}
-"""
-
-from Crypto.Util import number
-
-def parse(data):
-    things = []
-    while data:
-        t = ord(data[0])
-        assert (t & 0xc0) == 0, 'not a universal value: 0x%02x' % t
-        #assert t & 0x20, 'not a constructed value: 0x%02x' % t
-        l = ord(data[1])
-        assert data != 0x80, "shouldn't be an indefinite length"
-        if l & 0x80: # long form
-            ll = l & 0x7f
-            l = number.bytes_to_long(data[2:2+ll])
-            s = 2 + ll
-        else:
-            s = 2
-        body, data = data[s:s+l], data[s+l:]
-        t = t&(~0x20)
-        assert t in (SEQUENCE, INTEGER), 'bad type: 0x%02x' % t
-        if t == SEQUENCE:
-            things.append(parse(body))
-        elif t == INTEGER:
-            #assert (ord(body[0])&0x80) == 0, "shouldn't have negative number"
-            things.append(number.bytes_to_long(body))
-    if len(things) == 1:
-        return things[0]
-    return things
-
-def pack(data):
-    ret = ''
-    for part in data:
-        if type(part) in (type(()), type([])):
-            partData = pack(part)
-            partType = SEQUENCE|0x20
-        elif type(part) in (type(1), type(1L)):
-            partData = number.long_to_bytes(part)
-            if ord(partData[0])&(0x80):
-                partData = '\x00' + partData
-            partType = INTEGER
-        else:
-            raise ValueError('unknown type %s' % (type(part),))
-
-        ret += chr(partType)
-        if len(partData) > 127:
-            l = number.long_to_bytes(len(partData))
-            ret += chr(len(l)|0x80) + l
-        else:
-            ret += chr(len(partData))
-        ret += partData
-    return ret
-
-INTEGER = 0x02
-SEQUENCE = 0x10
-