Simplexity
Crypto
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Simplexity
In a stroke of genius, Blaise de Vigenère decided to enhance his cryptosystem in response to the discovery of Kasiki. His cipher working by bloc, he thus decides to include a mode of operation, the CBC. Show him that the attack of his new cipher is a simplex! Challenge
Once decrypted, add the result in THCON{} to obtain the flag. To decrypt: epbocjkbfljwgnysnnftxnflwpfqcxinwbcjlqif
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