Exam 16: Security and Encryption

Once we have built a Cipher object reference specifying that it uses RSA, the call to the doFinal method is identical to the call to doFinal if it uses another algorithm, such as AES.

The getEncoded method of the Key interface returns an array of __________________.

Passwords are typically encrypted using a one-way encryption algorithm.

The KeyPairGenerator class is abstract.

When receiving a message from somebody else and decrypting it using the RSA encryption algorithm, what key do we use to decrypt the message?

PrivateKey and PublicKey are classes.

The ____________ class provides access to implementations of encryption and decryption algorithms.

When sending a message using the RSA encryption algorithm, what key do we use to encrypt our message?

Which one of these numbers is not a composite number?

The getInstance method of the KeyPairGenerator class is static.

The KeyPair and KeyPairGenerator classes are in the __________________ package.

The __________________ package contains classes and interfaces that encapsulate cryptology concepts.

77 is a composite number.

When calling the init method of the Cipher class, if we want to encrypt, we can pass the __________________ constant of the Cipher class as the first argument of init.

AES stands for Advanced Encryption ____________.

What is the return type of the getPublic method of the KeyPair class?

The parameter of the initialize method of the KeyPairGenerator class is an int that represents the key size in bytes.

To build a Cipher object reference, we call the getInstance method of the Cipher class and pass the String RSA.

To get a Cipher reference, we use a method of the Cipher class that takes one parameter. What can you say about that parameter?

We can call the getProviders method of the ____________ class to get a list of encryption algorithms available on a device.