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Consider two substitution ciphers. One adds a value of i to the ASCII code of the plaintext character. The other adds a value of j to the plaintext character. All additions are modulo 256.
Now consider a double-encryption method that adds i to each plaintext character and then adds j to the resulting ciphertext character to get another ciphertext character. Again, all calculations are modulo 256.
How much more secure is this double encryption when compared with either single-encryption method?
Using Java write down a program to create a file named Exercise8_5.txt if it does not exist. Write 100 randomly created integers into the file using text I/O. Integers are separated by spaces in the file. Read the data back from the file and displ..
Write down a SQL query that returns the names of the students (lname, fname), and the major of the major with most students. If more than one major is tied for most students, then list all the names of the students from both majors (as well as the..
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An ordered list below the image setting out your personal priorities in taking this degree course. salect an option that is different from lower Roman.
What do you understand by the term SNMP? Explain the role which SNMP plays in managing the networks.
What are three goals of safety in computing?
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The make-buy decision is an important management prerogative. I am supposed to be a manager of a software organization that has the average software development cost of $20.00/LOC.
Purpose and use of the Java Adapter classes
For the existing Blackboard system, a system utilized for virtual classroom, grades, messages, and announcements, develop ONE UML Sequence Diagram for uploading the document to Blackboard.
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