Easy1¶
Challenge¶
The one time pad can be cryptographically secure, but not when you know the key. Can you solve this? We've given you the encrypted flag, key, and a table to help UFJKXQZQUNB with the key of SOLVECRYPTO. Can you use this table to solve it?.
Solution¶
Looks like a Vigenere Cipher. Using the table and key for now and doing the manual way.
picoCTF{CRYPTOISFUN}
Less manual way would be in python3:
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First argument would be your ciphertext, second would be the key.