def fill(self, d):
"""
"""
self._d = d
idx = 0
self.version, idx = STN.strcalc(STN.str2int, d[idx:idx+1], idx)
self.alg, idx = STN.strcalc(STN.str2int, d[idx:idx+1], idx)
self.s2k, idx = S2K.strcalc_s2k(d[idx:], idx)
def fill(self, d):
idx = PublicKeyBody.fill(self, d)
self._private_idx = idx # marks start of private data
self.s2k_usg, idx = STN.strcalc(STN.str2int, d[idx:idx+1], idx)
if 0 == self.s2k_usg: # unencrypted MPIs
self.__resolve_secmpi(idx)
else:
if self.s2k_usg in [254, 255]: # encrypted MPIs
self.alg_sym, idx = STN.strcalc(STN.str2int, d[idx:idx+1], idx)
self.s2k, idx = S2K.strcalc_s2k(d[idx:], idx)
if 0 == self.alg_sym: # plaintext or unencrypted data
self.__resolve_secmpi(idx)
return
elif 1 == self.alg_sym: # IDEA [IDEA]
self.iv, idx = STN.strcalc(None, d[idx:idx+8], idx)
elif 2 == self.alg_sym: # Triple-DES DES-EDE, 168 bit key derived from 192
raise NotImplementedError, "3DES"
elif 3 == self.alg_sym: # CAST5 (128 bit key, as per RFC2144)
self.iv, idx = STN.strcalc(None, d[idx:idx+8], idx)
elif 4 == self.alg_sym: # Blowfish (128 bit key, 16 rounds)
self.iv, idx = STN.strcalc(None, d[idx:idx+8], idx)
elif self.alg_sym in [5, 6]: # Reserved
raise NotImplementedError, "Reserved"
elif 7 == self.alg_sym: # AES with 128-bit key [AES]
raise NotImplementedError, "AES 128"
elif 8 == self.alg_sym: # AES with 192-bit key
raise NotImplementedError, "AES 192"
elif 9 == self.alg_sym: # AES with 256-bit key
raise NotImplementedError, "AES 256"
elif 10 == self.alg_sym: # Twofish with 256-bit key [TWOFISH]
raise NotImplementedError, "Twofish"
elif self.alg_sym in range(100, 111): #100-110 Private/Experimental
raise NotImplementedError, "Private/Experimental"
else:
raise ValueError, "Unsupported symmetric encryption algorithm->(%s)" % (str(self.alg_sym))
else: # s2k usage specifies the symmetric algorithm
self.alg_sym = self.s2k_usg
self.iv, idx = STN.strcalc(None, d[idx:idx+8], idx)
# encrypted data: MPIs + chksum/hash
if 3 == self.version and self.s2k_usg in [254, 255]:
if 255 == self.s2k_usg: # checksum is stored in the clear
self._enc_d = d[:-2]
self.chksum = d[-2:]
elif 254 == self.s2k_usg: # nothing was specifically mentioned
self._enc_d = d[:-20] # about SHA1 in v3/RSA keys, but this
self.chksum = d[-20:] # should make sense given the above
else:
self._enc_d = d[idx:]
