Implement a complete security system from scratch, incorporating both symmetric and public key encryption for message confidentiality and authentication.

Requirements: $($Write your code from scratch$-$ use python$)$

$1.$ Symmetric Key Encryption:

o Use either AES $(128$ bits$)$ or $3-$DES $($with $3$ keys$)$ for encryption. You must use the following keys for encryption.

$$ Key for AES: $0$x$3$C$4$FCF$0988115632$F$9$A$34$E$5671$ACD$457$

$$ Key for $3-$DES: K$1=0$x$1$A$2$B$3$C$4$D$5$E$6$F$7890,$ K$2=0$x$1$B$2$C$3$D$4$E$5$F$6$A$7$B$89,$ K$3=0$xC$1$D$2$E$3$F$4$A$5$B$6$C$7$D$8.$

Implement a block cipher mode introduced in the class to handle encryption of the file in blocks.

$$ Use only CBC mode.

$$ If an IV$/$nonce$/$counter is needed,

$$ please use $0$x$00112233445566778899$AABBCCDDEEFF if you are using AES for encryption

$$ please use $0$x$0123456789$ABCDEF if you are using $3-$DES for encryption

$2.$ Public Key Encryption for Authentication:

o Use RSA to create authentication of the encrypted file. You can directly use your code from Assignment $3.$

$$ Please still use p$=61,$ q$=83,$ and e$=17$ in this assignment for efficient computation.

$$ Come up with a way to efficiently work on RSA encryption on a long message.

$3.$ File Input and Output:

o The program should accept the file $($e$.$g$.,$ message.txt$)$ attached to the assignment for encryption.

o The output should be an encrypted file that is authenticated by using RSA $($e$.$g$.,$ message$\_$encrypted.txt$).$

o The program should then read the encrypted file to verify the authentication and decrypt the message.

$$Draw a diagram of the overall process and provide high$-$level explanations of each component $($symmetric encryption, authentication, and decryption$).$

Please provide another security analysis section, which should include but not be limited to the following perspective, confidentiality, authentication, and overall security and limitations$.$