##// END OF EJS Templates
NoneDownloader should handle only protocols that are 100% not processed by a simple downloader
NoneDownloader should handle only protocols that are 100% not processed by a simple downloader

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sync_key.py
61 lines | 2.0 KiB | text/x-python | PythonLexer
import base64
from ecdsa import SigningKey, VerifyingKey, BadSignatureError
from django.db import models
TYPE_ECDSA = 'ecdsa'
APP_LABEL_BOARDS = 'boards'
class KeyPairManager(models.Manager):
def generate_key(self, key_type=TYPE_ECDSA, primary=False):
if primary and self.filter(primary=True).exists():
raise Exception('There can be only one primary key')
if key_type == TYPE_ECDSA:
private = SigningKey.generate()
public = private.get_verifying_key()
private_key_str = base64.b64encode(private.to_string()).decode()
public_key_str = base64.b64encode(public.to_string()).decode()
return self.create(public_key=public_key_str,
private_key=private_key_str,
key_type=TYPE_ECDSA, primary=primary)
else:
raise Exception('Key type not supported')
def verify(self, signature, string):
if signature.key_type == TYPE_ECDSA:
public = VerifyingKey.from_string(base64.b64decode(signature.key))
signature_byte = base64.b64decode(signature.signature)
try:
return public.verify(signature_byte, string.encode())
except BadSignatureError:
return False
else:
raise Exception('Key type not supported')
def has_primary(self):
return self.filter(primary=True).exists()
class KeyPair(models.Model):
class Meta:
app_label = APP_LABEL_BOARDS
objects = KeyPairManager()
public_key = models.TextField()
private_key = models.TextField()
key_type = models.TextField()
primary = models.BooleanField(default=False)
def __str__(self):
return '%s::%s' % (self.key_type, self.public_key)
def sign(self, string):
private = SigningKey.from_string(base64.b64decode(
self.private_key.encode()))
signature_byte = private.sign_deterministic(string.encode())
return base64.b64encode(signature_byte).decode()