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22 lines
589 B
Python
22 lines
589 B
Python
import pyaes
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class AESModeCTR:
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"""Wrapper around pyaes.AESModeOfOperationCTR mode with custom IV"""
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# TODO Maybe make a pull request to pyaes to support iv on CTR
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def __init__(self, key, iv):
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# TODO Use libssl if available
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assert isinstance(key, bytes)
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self._aes = pyaes.AESModeOfOperationCTR(key)
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assert isinstance(iv, bytes)
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assert len(iv) == 16
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self._aes._counter._counter = list(iv)
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def encrypt(self, data):
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return self._aes.encrypt(data)
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def decrypt(self, data):
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return self._aes.decrypt(data)
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