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The XOR instruction has an interesting property. If an integer A is XORed with B and the resulting value is XORed with B again, the value produced is A: ((A+B) + B) = A This reversible property of XOR provides an easy way to perform a simple form of data encryption: A plain text message is transformed into an encrypted string called cipher text by XORing each of its characters with a character from a third-string called a key. The intended viewer can use the key to decrypt the cipher text and produce the original plain text. In this project, we'll create a simple encryption and decryption program using XOR (exclusive OR) in x86 assembly language using MASM on Microsoft Visual Studio. This encryption technique you are supposed to input a key consisting of multiple characters. Use this key to encrypt and decrypt the plaintext by XORing each character of the key against a corresponding byte in the message. Repeat the key as many times as necessary until all plain text bytes are translated. For example, if the key is "ABXmv#7". The Plain text is: "This is a plain Text Message" This is how the key would align with the plain text bytes: Plain text This is a Plaintext Key ABXmv#7ABXmv message (etc.) ABXmv#7A8Xmv (The key repeats until it equals the length of the plain text...) What Will You Do in This Program? 1- You will input a message from the keyboard 2- Input a Key from the keyboard 3- Display the message after Encryption 4 Display the message after decryption 5- Never use any stack operation 6- Use as much as different addressing modes 7- Comment the lines of your code 8- Use the Microsoft visual studio with Irvine32 library.

The XOR instruction has an interesting property. If an integer A is XORed with B and the resulting value is XORed with B again, the value produced is A: ((A+B) + B) = A This reversible property of XOR provides an easy way to perform a simple form of data encryption: A plain text message is transformed into an encrypted string called cipher text by XORing each of its characters with a character from a third-string called a key. The intended viewer can use the key to decrypt the cipher text and produce the original plain text. In this project, we'll create a simple encryption and decryption program using XOR (exclusive OR) in x86 assembly language using MASM on Microsoft Visual Studio. This encryption technique you are supposed to input a key consisting of multiple characters. Use this key to encrypt and decrypt the plaintext by XORing each character of the key against a corresponding byte in the message. Repeat the key as many times as necessary until all plain text bytes are translated. For example, if the key is "ABXmv#7". The Plain text is: "This is a plain Text Message" This is how the key would align with the plain text bytes: Plain text This is a Plaintext Key ABXmv#7ABXmv message (etc.) ABXmv#7A8Xmv (The key repeats until it equals the length of the plain text...) What Will You Do in This Program? 1- You will input a message from the keyboard 2- Input a Key from the keyboard 3- Display the message after Encryption 4 Display the message after decryption 5- Never use any stack operation 6- Use as much as different addressing modes 7- Comment the lines of your code 8- Use the Microsoft visual studio with Irvine32 library.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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The XOR instruction has an interesting property. If an integer A is XORed with B and the resulting value is XORed with B again, the value produced is A: ((A+B) + B) = A This reversible property of XOR provides an easy way to perform a simple form of data encryption: A plain text message is transformed into an encrypted string called cipher text by XORing each of its characters with a character from a third-string called a key. The intended viewer can use the key to decrypt the cipher text and produce the original plain text. In this project, we'll create a simple encryption and decryption program using XOR (exclusive OR) in x86 assembly language using MASM on Microsoft Visual Studio. This encryption technique you are supposed to input a key consisting of multiple characters. Use this key to encrypt and decrypt the plaintext by XORing each character of the key against a corresponding byte in the message. Repeat the key as many times as necessary until all plain text bytes are translated. For example, if the key is "ABXmv#7". The Plain text is: "This is a plain Text Message" This is how the key would align with the plain text bytes: Plain text This is a Plaintext Key ABXmv#7ABXmv message (etc.) ABXmv#7A8Xmv (The key repeats until it equals the length of the plain text...) What Will You Do in This Program? 1- You will input a message from the keyboard 2- Input a Key from the keyboard 3- Display the message after Encryption 4 Display the message after decryption 5- Never use any stack operation 6- Use as much as different addressing modes 7- Comment the lines of your code 8- Use the Microsoft visual studio with Irvine32 library.
Transcribed Image Text:The XOR instruction has an interesting property. If an integer A is XORed with B and the resulting value is XORed with B again, the value produced is A: ((A+B) + B) = A This reversible property of XOR provides an easy way to perform a simple form of data encryption: A plain text message is transformed into an encrypted string called cipher text by XORing each of its characters with a character from a third-string called a key. The intended viewer can use the key to decrypt the cipher text and produce the original plain text. In this project, we'll create a simple encryption and decryption program using XOR (exclusive OR) in x86 assembly language using MASM on Microsoft Visual Studio. This encryption technique you are supposed to input a key consisting of multiple characters. Use this key to encrypt and decrypt the plaintext by XORing each character of the key against a corresponding byte in the message. Repeat the key as many times as necessary until all plain text bytes are translated. For example, if the key is "ABXmv#7". The Plain text is: "This is a plain Text Message" This is how the key would align with the plain text bytes: Plain text This is a Plaintext Key ABXmv#7ABXmv message (etc.) ABXmv#7A8Xmv (The key repeats until it equals the length of the plain text...) What Will You Do in This Program? 1- You will input a message from the keyboard 2- Input a Key from the keyboard 3- Display the message after Encryption 4 Display the message after decryption 5- Never use any stack operation 6- Use as much as different addressing modes 7- Comment the lines of your code 8- Use the Microsoft visual studio with Irvine32 library.
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