$ ctf42

AND_encryption

Crypto No technique tags yet.
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Flag format: grodno{...}

XOR-шифрование изестно всем:

cipher = message XOR key
message = cipher XOR key

А я заменил XOR на AND ...

XOR encryption is known to everyone:

 cipher = message XOR key
 message = cipher XOR key

And I replaced XOR with AND...

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