down_the_stream_2

crypto The author tried to be a bit more clever and this time, parts of the cipher are redacted. However, you were able to intercept a plaintext-ciphertext pair generated from the algorithm. Does this compensate for the redacted algorithm?

The initialization vector this time (IV) is the palindrome generated from the previous IV. e.g. if the previous IV was 2a, then the palindrome generated is 2aa2

Author william_etotheipi