I've heard that bit-a-bit cryptography is secure... so a byte-a-byte encryption is 8 times more secure!
Author: @Artio
havceCTF{d0_n0t_x0r_w1th_kn0wn_pl41nt3xt}
The "flag format" is eight bytes long havceCTF, that means that we know the first eight bytes of what
is encoded, but the key is also eight bytes. This way we can entirely recover the key by xoring the first
eight bytes of ciphertext with havceCTF, then we can recover the rest of the flag.