CoCalc -- source.py

GitHub Repository: ashutosh1206/crypton
Path: blob/master/Message-Authentication-Code/CBC-MAC-Forgery/Challenges/He-Moron/source.py
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def sign(k, m):
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	ECB = AES.new(k, AES.MODE_ECB)
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	mb = [m[i:i + 16] for i in range(0, len(m), 16)]
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	t = ECB.encrypt(mb[0])
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	for i in range(1,len(mb)):
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	    t = ECB.encrypt(strxor(mb[i], t))
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	return hexlify(t)
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