$ ctf42

Secret_Sequence

Difficulty Not rated yet

Flag format: TSGCTF{...}

JA / EN

I implemented a cipher called twofish with a 128-bit key by myself to encrypt Flag , which is my first time using NumPy, but very useful!

By the way, the encryption results don't match the Known Answer Test listed in Test Vectors on the official site, but I wonder why.

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