29 lines
717 B
Python
29 lines
717 B
Python
from cryptography.exceptions import InvalidSignature
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from ..rfc7515 import JWSAlgorithm
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from .okp_key import OKPKey
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class EdDSAAlgorithm(JWSAlgorithm):
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name = "EdDSA"
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description = "Edwards-curve Digital Signature Algorithm for JWS"
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def prepare_key(self, raw_data):
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return OKPKey.import_key(raw_data)
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def sign(self, msg, key):
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op_key = key.get_op_key("sign")
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return op_key.sign(msg)
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def verify(self, msg, sig, key):
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op_key = key.get_op_key("verify")
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try:
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op_key.verify(sig, msg)
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return True
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except InvalidSignature:
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return False
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def register_jws_rfc8037(cls):
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cls.register_algorithm(EdDSAAlgorithm())
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