def key(self):
"""
:return: a subclass of PKey of the appropriate key type
:rtype: PKey
:raises ValidationError:
"""
# Check if the key pair exists: at least a public or private part of
# the key is required, as well as the key type.
if not self.key_type:
return None
if not self.public_key and not self.private_key:
return None
public_key = None
private_key = None
if self.public_key:
public_key = base64.b64decode(self.public_key)
if self.private_key:
private_key = StringIO(self.private_key)
if self.key_type == 'ssh-dss':
pkey = DSSKey(data=public_key, file_obj=private_key)
elif self.key_type == 'ssh-rsa':
pkey = RSAKey(data=public_key, file_obj=private_key)
elif self.key_type.startswith('ecdsa'):
pkey = ECDSAKey(data=public_key, file_obj=private_key)
elif self.key_type == '*****@*****.**':
pkey = RSAKey(data=public_key, file_obj=private_key)
pkey.public_blob = PublicBlob(self.key_type, public_key)
else:
raise ValidationError('Unsupported key type: ' + self.key_type)
return pkey
