NEW QUESTION 75
A method for cracking modern cryptography. The attacker obtains the cipher texts corresponding to a set of plain texts of own choosing. Allows the attacker to attempt to derive the key. Difficult but not impossible.

NEW QUESTION 76
What size key does Skipjack use?

NEW QUESTION 77
This is a 128 bit hash that is specified by RFC 1321. It was designed by Ron Rivest in 1991 to replace an earlier hash function.

NEW QUESTION 78
The greatest weakness with symmetric algorithms is _____.

NEW QUESTION 79
A non-secret binary vector used as the initializing input algorithm for encryption of a plaintext block sequence to increase security by introducing additional cryptographic variance.

NEW QUESTION 80
What is the name of the attack where the attacker obtains the ciphertexts corresponding to a set of plaintexts of his own choosing?

NEW QUESTION 81
What is the name of the attack where the attacker obtains the ciphertexts corresponding to a set of plaintexts of his own choosing?

NEW QUESTION 82
What is Kerchoff’s principle?

NEW QUESTION 83
The most common way steganography is accomplished is via which one of the following?

NEW QUESTION 84
You are studying classic ciphers. You have been examining the difference between single substitution and multi-substitution. Which one of the following is an example of a multi-alphabet cipher?

NEW QUESTION 85
Message hidden in unrelated text. Sender and receiver have pre-arranged to use a pattern to remove certain letters from the message which leaves only the true message behind.

NEW QUESTION 86
Asymmetric encryption method developed in 1984. It is used in PGP implementations and GNU Privacy Guard Software. Consists of 3 parts: key generator, encryption algorithm, and decryption algorithm.

NEW QUESTION 87
You are trying to find a modern method for security web traffic for use in your company’s ecommerce web site. Which one of the following is used to encrypt web pages and uses bilateral authentication?

NEW QUESTION 88
Part of understanding cryptography is understanding the cryptographic primitives that go into any crypto system. A(n) _______ is a fixed-size input to a cryptographic primitive that is random or pseudorandom.

NEW QUESTION 89
Protocol suite provides a method of setting up a secure channel for protected data exchange between two devices.

NEW QUESTION 90
A real time protocol for verifying certificates (and a newer method than CRL).

NEW QUESTION 91
A symmetric Stream Cipher published by the German engineering firm Seimans in 1993. A software based stream cipher that uses a Lagged Fibonacci generator along with concepts borrowed from shrinking generator ciphers.

NEW QUESTION 92
Which of the following would be the fastest.

NEW QUESTION 93
In 1977 researchers and MIT described what asymmetric algorithm?

NEW QUESTION 94
You have been tasked with selecting a digital certificate standard for your company to use. Which one of the following was an international standard for the format and information contained in a digital certificate?

NEW QUESTION 95
A measure of the uncertainty associated with a random variable.

NEW QUESTION 96
In a Feistel cipher, the two halves of the block are swapped in each round. What does this provide?

NEW QUESTION 97
Cylinder tool. Wrap leather around to decode. The diameter is the key. Used in 7th century BC by greek poet Archilochus.