git.distorted.org.uk Git - u/mdw/catacomb/blob - mkpgroups

   1 #! /usr/bin/python
   2
   3 import catacomb as C
   4 import mLib as M
   5 from sys import stdin
   6
   7 kf = C.KeyFile('pgroups.kr', C.KOPEN_WRITE)
   8
   9 for line in stdin:
  10   line = line.strip()
  11   if line == '' or (line.startswith('#') and not line.startswith('#:')):
  12     continue
  13   F = line.split()
  14   if F[0] == 'group':
  15     name = F[1]
  16     if not name.startswith('catacomb'):
  17       continue
  18     def snarf(what):
  19       F = stdin.next().split()
  20       assert F[0] == what
  21       return F[1]
  22     p = C.MP(snarf('p'))
  23     q = C.MP(snarf('q'))
  24     g = C.MP(snarf('g'))
  25     ff = []
  26     while True:
  27       F = stdin.next().split()
  28       if not F or F[0] != '#:factor':
  29         break
  30       ff.append(C.MP(F[1]))
  31     seed = C.rmd160().hash(name).done()
  32     k = kf.newkey(C.ReadBuffer(seed).getu32(), 'dh-param')
  33     k.tag = name
  34     k.data = C.KeyDataStructured({
  35       'p': C.KeyDataMP(p, 'shared'),
  36       'q': C.KeyDataMP(q, 'shared'),
  37       'g': C.KeyDataMP(g, 'shared')
  38     })
  39     k.attr['factor'] = ', '.join([f.tostring() for f in ff])
  40     k.attr['genseed'] = M.base64_encode(seed)
  41     k.attr['seedalg'] = 'rmd160-mgf'
  42 kf.save()