29 lines
694 B
Python
29 lines
694 B
Python
from base64 import b64encode
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from nacl.signing import SigningKey
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def tag(key):
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"""Create tag from publick key."""
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return b'@' + b64encode(bytes(key)) + b'.ed25519'
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class KeyPair(object):
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def __init__(self, seed=None):
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self.private_key = SigningKey.generate() if seed is None else SigningKey(seed)
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self.public_key = self.private_key.verify_key
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@property
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def tag(self):
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return tag(self.public_key).decode('ascii')
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@property
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def private_tag(self):
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return tag(self.private_key)
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def sign(self, data):
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return self.private_key.sign(data).signature
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def __repr__(self):
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return "<KeyPair {0.tag}>".format(self)
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