Explain how Cipher Block Chaining (CBC) operates.
What will be an ideal response?
After being encrypted, each ciphertext block gets "fed back" into the encryption process to encrypt the next plaintext block. Using CBC, each block of plaintext is XORed with the previous block of ciphertext before being encrypted. CBC is also dependent on the previous ciphertext block, making it much more difficult to break.
You might also like to view...
A stack cannot store details regarding the function that called the currently executing function.
Answer the following statement true (T) or false (F)
Modify the Craps Game application from Tutorial 15 to use the Java Speech API. The completed application is shown in Fig. 28.19
a) Copying the template to your working directory. Copy the C:Examples Tutorial28ExercisesCrapsGameEnhancement directory to your C:SimplyJava directory.
b) Opening the template file. Open the CrapsGame.java file in your text editor.
c) Importing Java Speech API packages. Import the javax.speech and the javax.speech.synthesis packages.
d) Declaring instance variables. Above the CrapsGame constructor, declare an instance variable of type Synthesizer, which is used to speak text.
e) Creating a Synthesizer object. Inside the CrapsGame constructor, create a Synthe- sizer object, allocate the resource and prepare the synthesizer to speak.
f) Adding code to the instructionsJButtonActionPerformed method. Find the instructionsJButtonActionPerformed method, which immediately follows createUserInterface. Add code to the instructionsJButtonActionPerformed method so that the speech synthesizer speaks the instructions of the game.
g) Adding code to the playJButtonActionPerformed method. Find the playJButtonAct
Which of the following statements about creating a new tab is TRUE?
A) A new group named New Group (Custom) is automatically created. B) Two new groups are automatically created with a new tab. C) New tabs retain the new tab name of Custom tab 1, Custom tab 2, etc. D) New groups can be created for a new tab; individual commands cannot.
On lower-level diagrams with multiple processes, there should not be more than nine process symbols.
Answer the following statement true (T) or false (F)