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013

  • Description: MXV{BNRNKWPCEUSEX} k:FLAG

🔎 Solution​

Given the provided ciphertext and key, this appears to be a Vigenère cipher, where each ciphertext letter is determined by (plaintext + shift_from_key) mod 26.

Using Vigenère cipher decoder with the key FLAG reveals the plaintext.

🚩Flag​

HMV{VIGNERECYPHER}