Exam 16: Cryptography

A simple way to secure hardware, such as laptops and PCs, with a key or combination would be:

Which of the following standards does S/MIME use?

What is the block size of the SHA-1 algorithm?

What is used for encrypting and decrypting disk partitions, e-mails, files and other data that use hashing, symmetric cryptography and public key cryptography?

Which of the following Symmetric Algorithms uses a key size of up to 2,040 bits?

What was the first IEEE encryption standard for 802.11 wireless communications?

John wants to check the validity of a digital certificate. Which of the following should he use?

Which of the following organizations is responsible for issuing and maintaining digital certificates?

A way of concealing messages from even being seen except from the sender and receiver is:

What kind of trust model is in place when a CA is both the root and subordinate as is every other CA in the organization?

What is the block size used by the Blowfish algorithm?

What is a hardware based encryption device that stores keys that protect information called?

David wants to use symmetric-key encryption to encrypt and decrypt data. How many keys will he need?

What is a company that can authorize the issuing of Digital Certificates called?

What is a digital signature?

Which of the following can PGP not encrypt?

Which Cryptographic hash function uses a 128-bit hash and is not collision resistant?