Phishing scam: Phishing scam is a false attempt to obtain confidential information like usernames, passwords, information about credit cards, bank accounts, and so on. This is done by disguising as an honest entity through electronic communication. Phishing message asks the user to reply with their confidential information or they can be in the form of pop-ups that collect user’s information. Protecting against the phishing scams: Phishing website is the website that looks similar to the original website. User enters their personal information such as username and password in the phished website, which helps in collecting personal and financial information from legitimate users. The user should not reply with their personal and financial data to those who are requesting them for online verification through email message. Make sure not to click or tap any links through email, even if you get an email from a known person. Instead, type the link manually into the web address bar.

Question

Let the user choose encryption or decryption. For encryption, let user input the key in Hexadecimal number, the plain text in Hexadecimal number, output the ciphertext (in hexadecimal numbers). For decryption, let user input the key in Hexadecimal number, the ciphertext (in hexadecimal numbers), output the decrypted message (Hexadecimal number). Both encryption and decryption should output the different operation results for each round like the following: For example: Round 1: E(R0) = ...... (Hex or Binary) K1 = …… E(Ro) xor K1 = S-box outputs = …… f(Ro1, K1) = ….. L2 =R1 =……. La = Ra Round 2: .....• No Encryption/Decryption libraries or functions provided by the third party are allowed. Submit your program codes to Moodle with the notes of how to compile and run your program.

Answer 1

Question

Chapter 5, Problem 2PS

Program Plan Intro

Phishing scam:

Phishing scam is a false attempt to obtain confidential information like usernames, passwords, information about credit cards, bank accounts, and so on.

This is done by disguising as an honest entity through electronic communication.

Phishing message asks the user to reply with their confidential information or they can be in the form of pop-ups that collect user’s information.

Protecting against the phishing scams:

Phishing website is the website that looks similar to the original website.

User enters their personal information such as username and password in the phished website, which helps in collecting personal and financial information from legitimate users.

The user should not reply with their personal and financial data to those who are requesting them for online verification through email message.

Make sure not to click or tap any links through email, even if you get an email from a known person. Instead, type the link manually into the web address bar.

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Let the user choose encryption or decryption. For encryption, let user input the key in Hexadecimal number, the plain text in Hexadecimal number, output the ciphertext (in hexadecimal numbers). For decryption, let user input the key in Hexadecimal number, the ciphertext (in hexadecimal numbers), output the decrypted message (Hexadecimal number). Both encryption and decryption should output the different operation results for each round like the following: For example: Round 1: E(R0) = ...... (Hex or Binary) K1 = …… E(Ro) xor K1 = S-box outputs = …… f(Ro1, K1) = ….. L2 =R1 =……. La = Ra Round 2: .....• No Encryption/Decryption libraries or functions provided by the third party are allowed. Submit your program codes to Moodle with the notes of how to compile and run your program.

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