mdw@git.distorted.org.uk Git - catacomb-python/blob - algorithms.py

   1 ## -*-python-*-
   2
   3 def cross(*seq):
   4   if not len(seq):
   5     return [(),]
   6   x = seq[0]
   7   if type(x) is not tuple and type(x) is not list:
   8     x = x,
   9   r = []
  10   for i in x:
  11     for j in cross(*seq[1:]):
  12       r.append((i,) + j)
  13   return r
  14
  15 prps = '''
  16 des desx des3 mars
  17 idea safer safersk
  18 blowfish twofish
  19 tea xtea
  20 rc2 rc5
  21 skipjack
  22 cast128 cast256
  23 square rijndael rijndael192 rijndael256
  24 serpent noekeon
  25 '''.split()
  26 pmodes = '''
  27 ecb cbc cfb ofb counter
  28 cmac pmac1
  29 '''.split()
  30 streamciphers = '''
  31 rc4 seal
  32 '''.split()
  33 latindances = '''
  34 salsa20 salsa20/12 salsa20/8
  35 salsa20-ietf salsa20/12-ietf salsa20/8-ietf
  36 xsalsa20 xsalsa20/12 xsalsa20/8
  37 chacha20 chacha12 chacha8
  38 chacha20-ietf chacha12-ietf chacha8-ietf
  39 xchacha20 xchacha12 xchacha8
  40 '''.split()
  41 streamciphers += map(lambda s: s.translate(None, '/'), latindances)
  42 hashes = '''
  43 md2 md4 md5 tiger has160
  44 sha sha224 sha256 sha512/224 sha512/256 sha384 sha512
  45 rmd128 rmd160 rmd256 rmd320
  46 whirlpool whirlpool256
  47 sha3-224 sha3-256 sha3-384 sha3-512
  48 '''.split()
  49 hmodes = '''
  50 mgf hmac
  51 '''.split()
  52
  53 print '/* algorithms.h [generated] */'
  54 print
  55
  56 for i in prps:
  57   print '#include <catacomb/%s.h>' % i.replace('/', '-')
  58   for j in pmodes:
  59     print '#include <catacomb/%s-%s.h>' % (i.replace('/', '-'), j)
  60 for i in streamciphers:
  61   print '#include <catacomb/%s.h>' % i.replace('/', '-')
  62 print
  63 for i in hashes:
  64   print '#include <catacomb/%s.h>' % i.replace('/', '-')
  65   for j in hmodes:
  66     print '#include <catacomb/%s-%s.h>' % (i.replace('/', '-'), j)
  67 print
  68
  69 print '#define PRPS(_) \\'
  70 for i in prps:
  71   print '\t_(%s, %s) \\' % (i.upper(), i)
  72 print '\t/* end */'
  73 print
  74
  75 print '#define RNGS(_) \\'
  76 for i in (cross(prps, ['ofb', 'counter'])):
  77   print ('\t_("%(prim)s-%(mode)s", %(primid)s_keysz, ' +
  78          '%(primid)s_%(mode)srand, RNG_PLAIN, 0) \\') % \
  79          {'prim': i[0], 'mode': i[1],
  80           'primid': i[0].replace('-', '_').replace('/', '_')}
  81 for i in (cross(hashes, 'mgf')):
  82   print ('\t_("%(prim)s-%(mode)s", %(primid)s_%(mode)skeysz, ' +
  83          '%(primid)s_%(mode)srand, RNG_PLAIN, 0) \\') % \
  84          {'prim': i[0], 'mode': i[1],
  85           'primid': i[0].replace('-', '_').replace('/', '_')}
  86 print '\t_("rc4", rc4_keysz, rc4_rand, 0, 0) \\'
  87 print '\t_("seal", seal_keysz, seal_rand, RNG_SEAL, 0) \\'
  88 for i in latindances:
  89   for r in ['salsa20', 'xsalsa20', 'chacha', 'xchacha']:
  90     if i.startswith(r):
  91       root = r
  92       break
  93   else:
  94     raise ValueError, 'failed to find root name for %s' % i
  95   if i.endswith('-ietf'): root += '_ietf'
  96   print ('\t_("%(name)s", %(root)s_keysz, %(id)s_rand, ' +
  97          'RNG_LATIN, %(ROOT)s_NONCESZ) \\') % \
  98       {'name': i, 'id': i.translate(None, '/').replace('-', '_'),
  99        'root': root, 'ROOT': root.upper()}
 100 for i in [128, 256]:
 101   print ('\t_("shake%(w)d", shake%(w)d_keysz, cshake%(w)d_rand, ' +
 102          'RNG_SHAKE, 0) \\') % \
 103          {'w': i}
 104   print ('\t_("kmac%(w)d", kmac%(w)d_keysz, kmac%(w)d_rand, ' +
 105          'RNG_KMAC, 0) \\') % \
 106          {'w': i}
 107 print '\t/* end */'
 108 print