Alice and Bob would like to communicate with each other using a session key, but they do not already have a shared secret key. Which algorithm can they use to exchange a secret key?

True or False? A private key cipher is also called an asymmetric key cipher.

True or False? You can break a cipher by analyzing the ciphertext to find the plaintext or key or by analyzing the ciphertext and its associated plaintext to find the key.

True or False? Whereas a cipher performs a particular task, a key gives the specific directions for how to do it.

True or False? Digital signatures require asymmetric key cryptography.

Juan is a wireless security professional. He is selecting a standard for wireless encryption protocols for access points and devices for his agency. For the highest security, which protocol should Juan choose?

Alice would like to send a message to Bob securely and wishes to use asymmetric encryption to encrypt the contents of the message. What key does she use to encrypt this message?

True or False? An algorithm is a repeatable process that produces the same result when it receives the same input.

Security objectives add value to relationships between businesses or between businesses and their customers. Which objective binds a message or data to a specific entity?

True or False? A product cipher is an encryption algorithm that has no corresponding decryption algorithm.

Some ciphers, regardless of type, rely on the difficulty of solving certain mathematical problems, which is the basis for asymmetric key cryptography. Which of the following is a branch of mathematics that involves multiplicative inverses that these ciphers use?

True or False? In a known-plaintext attack (KPA), the cryptanalyst has access only to a segment of encrypted data and has no choice as to what that data might be.

True or False? Transport Layer Security (TLS) is an example of a transport encryption protocol.

Bob is sending a message to Alice. He wants to ensure that nobody tampers with the message while it is in transit. What goal of cryptography is Bob attempting to achieve?

True or False? The U.S. government currently has no standard for creating cryptographic keys for classified applications.

Maria receives a ciphertext message from her colleague Wen. What type of function does Maria need to use to read the plaintext message?

True or False? You must always use the same algorithm to encrypt information and decrypt the same information.

Bob received a message from Alice that contains a digital signature. What cryptographic key does Bob use to verify the digital signature?

True or False? Elliptic curve cryptography (ECC) relies on algebraic structures of elliptic curves over finite fields.

True or False? Symmetric key ciphers require that both parties first exchange keys to be able to securely communicate.

True or False? In cryptography, a keyspace is the number of possible keys to a cipher.

True or False? The term certificate authority (CA) refers to a trusted repository of all public keys.