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Lazy generation of pubkey

pull/66/head^2
Michael Egorov 2017-09-29 19:44:26 -07:00
parent ddc91bb556
commit 78e88010b4
1 changed files with 11 additions and 5 deletions
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16
nkms/crypto/keypairs.py
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@ -7,14 +7,20 @@ from npre import umbral
class EncryptingKeypair(object):
KEYSIZE = 32
def __init__(self, privkey_bytes=None):
def __init__(self, privkey=None):
self.pre = umbral.PRE()
if not privkey_bytes:
self.priv_key = self.pre.gen_priv(dtype='bytes')
if not privkey:
self.priv_key = self.pre.gen_priv()
else:
self.priv_key = privkey_bytes
self.pub_key = self.pre.priv2pub(self.priv_key)
self.priv_key = privkey
self._pub_key = None
@property
def pub_key(self):
if self._pub_key is None:
self._pub_key = self.pre.priv2pub(self.priv_key)
return self._pub_key
def generate_key(self, pubkey=None):
"""