iv1 = 'e42758d6d218013ea63e3c49'
iv2 = 'a99f9a7d097daabd2aa2a235'
msg_enc = 'f3afbada8237af6e94c7d2065ee0e221a1748b8c7b11105a8cc8a1c74253611c94fe7ea6fa8a9133505772ef619f04b05d2e2b0732cc483df72ccebb09a92c211ef5a52628094f09a30fc692cb25647f'
flag_enc = 'b6327e9a2253034096344ad5694a2040b114753e24ea9c1af17c10263281fb0fe622b32732'