def verifySignature( publicKey, data, updateLevel, signature ) :
payload = encode( ('DHT-DATA',data,updateLevel) )
if type(publicKey) is str :
k = RSAKey()
try :
k.fromDER_PublicKey( publicKey )
except RSAError :
return False
else :
k = publicKey
try :
digest = Digest(digestType).digest( payload )
k.verify( signature, digest, digestType )
return True
except RSAError :
return False
def _doConnectPubKey( self, words ) :
if len(words) != 2 :
self._writeError( 'Malformed request' )
return
hexPubKey, service = words
if not self.session.isOnline() :
self._writeError( 'Not online' )
return
try :
pubKeyData = hexDecode( hexPubKey )
pubKey = RSAKey()
pubKey.fromDER_PublicKey( pubKeyData )
except (HexDecodeError,RSAError) :
self._writeError( 'Malformed publickey' )
return
self._connectInternal( pubKey, service )
def loadProfile( entry, password, location='CSpaceProfiles') :
ps = profileSettings(location)
userName = ps.getData( entry+'/Name' )
keyId = ps.getData( entry+'/KeyID' )
encKey = ps.getData( entry+'/PrivateKey' )
rsaKey = RSAKey()
try :
rsaKey.fromPEM_PrivateKey( encKey, password )
except RSAError :
return None
profile = Profile( rsaKey, userName, keyId, entry )
contactsData = ps.getData( entry+'/ContactList', '' )
for line in contactsData.split('\n') :
line = line.strip()
if not line : continue
name,hexKey = line.split(':')
assert isValidUserName(name)
pubKey = RSAKey()
pubKey.fromDER_PublicKey( hexDecode(hexKey) )
contact = Contact( pubKey, name )
profile.addContact( contact )
return profile
