1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
from cryptography.exceptions import InvalidSignature
from ..rfc7515 import JWSAlgorithm
from .okp_key import OKPKey
class EdDSAAlgorithm(JWSAlgorithm):
name = "EdDSA"
description = "Edwards-curve Digital Signature Algorithm for JWS"
def prepare_key(self, raw_data):
return OKPKey.import_key(raw_data)
def sign(self, msg, key):
op_key = key.get_op_key("sign")
return op_key.sign(msg)
def verify(self, msg, sig, key):
op_key = key.get_op_key("verify")
try:
op_key.verify(sig, msg)
return True
except InvalidSignature:
return False
def register_jws_rfc8037(cls):
cls.register_algorithm(EdDSAAlgorithm())
|
