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Question 44/66
Denis is looking at an older system that uses DES encryption. A colleague has told him that DES is insecure due to a small key size. What is the key length used for DES?
Correct Answer: C
56
https://en.wikipedia.org/wiki/DES
The Data Encryption Standard is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits makes it too insecure for applications, it has been highly influential in the advancement of cryptography.
https://en.wikipedia.org/wiki/DES
The Data Encryption Standard is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits makes it too insecure for applications, it has been highly influential in the advancement of cryptography.
- Question List (66q)
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- 1 commentQuestion 13: You are explaining basic mathematics to beginning cryptograp...
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- Question 15: Which of the following is a protocol for exchanging keys?...
- Question 16: Hash. Created by Ronald Rivest. Replaced MD4. 128 bit output...
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- Question 22: Developed by Netscape and has been replaced by TLS. It was t...
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- Question 24: Which of the following is an asymmetric cipher?...
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- Question 28: Which of the following asymmetric algorithms is described by...
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- Question 33: Which one of the following uses three different keys, all of...
- Question 34: John is responsible for VPNs at his company. He is using IPS...
- Question 35: During the process of encryption and decryption, what keys a...
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- Question 44: Denis is looking at an older system that uses DES encryption...
- Question 45: When learning algorithms, such as RSA, it is important to un...
- Question 46: Which of the following is required for a hash?...
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- Question 50: In 1977 researchers and MIT described what asymmetric algori...
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- Question 52: The most widely used asymmetric encryption algorithm is what...
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