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@ -4,7 +4,7 @@ import re
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from typing import Optional
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import bip39
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from ed25519 import SigningKey, VerifyingKey, create_keypair
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from ed25519 import BadSignatureError, SigningKey, VerifyingKey, create_keypair
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from .base32 import base32_bytes_to_string, base32_string_to_bytes
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from .exc import ValidationError
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@ -23,8 +23,8 @@ class Identity:
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_KEY_PATTERN = f'b[{B32_CHAR}]{{52}}'
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_NAME_PATTERN = f'[{ALPHA_LOWER}][{ALPHA_LOWER_OR_DIGIT}]{{3}}'
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_PATTERN = f'^@{_NAME_PATTERN}\\.{_KEY_PATTERN}$'
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_SECRET_PATTERN = f'^{_KEY_PATTERN}$'
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PATTERN = f'^@{_NAME_PATTERN}\\.{_KEY_PATTERN}$'
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def __init__(
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self,
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@ -143,3 +143,23 @@ class Identity:
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mnemonic = bip39.encode_bytes(seed)
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return f'{self.name} {mnemonic}'
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def sign(self, data: str) -> str:
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"""Sign data"""
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if not self.sign_key:
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raise TypeError('This identity doesn’t have a signing key')
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return base32_bytes_to_string(self.sign_key.sign(data.encode('utf-8')))
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def verify(self, data: str, signature: str) -> bool:
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"""Verify if data is signed by us"""
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signature_bytes = base32_string_to_bytes(signature)
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try:
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self.verify_key.verify(signature_bytes, data.encode('utf-8'))
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except BadSignatureError:
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return False
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return True
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