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29 lines
565 B
Python
29 lines
565 B
Python
import base64
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from cryptography.fernet import Fernet, InvalidToken
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def encrypt_string(string, key):
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"""
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Encrypts a string with the specified key.
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The key must be 32 raw bytes.
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"""
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f = Fernet(key)
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return f.encrypt(string)
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def decrypt_string(string, key, ttl=None):
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"""
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Decrypts an encrypted string with the specified key.
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The key must be 32 raw bytes.
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"""
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f = Fernet(key)
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try:
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return f.decrypt(str(string), ttl=ttl)
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except InvalidToken:
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return None
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except TypeError:
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return None
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