Given, DESkey$=14912$ab$957$e$85$ad$9$

AESkey$=$ be$7$d$9$c$2761$a$0$bc$3$ace$04$dfa$7$be$3$cc$5$c$7$

P$0=$ UUUUUUUUEEEEEEEEeeeeeeeeooooooooYYYYYYYYAAAAAAAAUUUUUUUUEEEEEEEE

P$1=$ ooooooooYYYYYYYYAAAAAAAAUUUUUUUUEEEEEEEEeeeeeeeeooooooooYYYYYYYY

P$2=$ UUUUUUUUEEEEEEEEYYYYYYYYAAAAAAAAUUUUUUUUEEEEEEEEYYYYYYYYAAAAAAAA

C$3=1$a$1$b$9859780$de$3$f$9$b$12$dbfef$89$c$042285$fdbbc$470$cb$62$c$66795$f$619$dde$871009$d$8$d$2$aaadc$62$c$44293$b$3$eb$988$fce$21$ea$01$a$1$b$9859780$de$3$f$9$b$12$dbfef$89$c$04228$

C$4=4065$c$0$d$5$e$7$e$07010$dc$48$ed$85$b$7280$cc$9029$de$66325$d$2$bda$8671$ab$4$f$725$b$1$cc$8$cdc$6$db$1626902$a$54$f$65$a$8$a$1987$f$3$d$33$b$04065$c$0$d$5$e$7$e$07010$dc$48$ed$85$b$7280$cc$9.$

a$.$ Encrypt your first plaintext P$0$ using your assigned DES key, and present the result

in hexadecimal in your answer file, giving all $128$ hex digits.

b$.$ Encrypt your plaintext P$0$ again, now using your assigned AES key, and give the result in hexadecimal in

your answer file

c$.$ Knowing that your $($hex$-$encoded$)$ ciphertext C$3$ is also a DES$-$ECB encryption of your P$0,$ but with a

different unknown key, can you transform your C$3$ into a DEC$-$ECB ciphertext that would decrypt, under the

same unknown key, into your plaintext P$1?$ If so$,$ write it down.

d$.$ Same question, but now seeking to transform your C$3$ into a valid DEC$-$ECB encryption of your P$2($instead of

P$1)$ under the unknown key.

e$.$ Similar question, knowing that your $($hex$-$encoded$)$ ciphertext C$4$ is an AES$128-$ECB encryption of your P$0$

under an unknown key, and you are told to either transform C$4$ into a valid AES$128-$ECB encryption of P$1$

under that unknown key, or indicate $$infeasible$$ if it is so$.$

f$.$ Same question, but seeking to transform your C$4$ into a valid AES$128-$ECB encryption of your P$2($instead of

P$1)$ under the unknown key.