DES algorithm
The Data Encryption Standard (DES) is a data encryption algorithm, which was put forth by Federal Information Processing Standard (FIPS) 36-3. This algorithm has a block size of 64 bits and makes use of 56 bits when executing where 8 bits are used for parity; the parity bits are taken away from the full 64 bits. The algorithm is symmetric cryptosystem and is a 16-round Feistel cipher in specific. In cases where the algorithm is used for communication, the same secret must be known by both eth sender and the receiver. The secret is used to decrypt and encrypt message; it can also be used to have verification for Message Authentication Code (MAC). DES can also be utilized for single-user encryption, for example, file storage in the hard disk in a form that is encrypted.
DES algorithm has different modes of operation. One of the modes is Electronic Code Book (ECB) where data is divided into blocks of 64 bits and that the encryption of the blocks is done one by one. The encryption of different blocks is discrete. In this case, if there is some error that is experienced in sending blocks in a network, it will only mean that any error that is experienced in the block will affect that block alone. In this mode also, there is the rearrangement of blocks, which will make the data get scrambled. This action can go without anyone noticing. Another mode is that of Cipher Block Chaining (CBC) where each block, which has been encrypted using cipher text, is XORed with the plaintext that will be encrypted next; in this case, all blocks will depend on their previous blocks. Another mode includes Cipher Feedback and Output Feedback.
References
Buchmann, J. (2004). Introduction to cryptography. New York: Springer.
Pfleeger, C., & Pfleeger, S. (2003). Security in computing. London: Prentice Hall Professional.
Cite this page
Choose cite format:
- APA
- MLA
- Harvard
- Vancouver
- Chicago
- ASA
- IEEE
- AMA
WowEssays. (2019, December, 02) Des Algorithm Research Paper Sample. Retrieved February 28, 2021, from https://www.wowessays.com/free-samples/des-algorithm-research-paper-sample/
"Des Algorithm Research Paper Sample." WowEssays, 02 Dec. 2019, https://www.wowessays.com/free-samples/des-algorithm-research-paper-sample/. Accessed 28 February 2021.
WowEssays. 2019. Des Algorithm Research Paper Sample., viewed February 28 2021, <https://www.wowessays.com/free-samples/des-algorithm-research-paper-sample/>
WowEssays. Des Algorithm Research Paper Sample. [Internet]. December 2019. [Accessed February 28, 2021]. Available from: https://www.wowessays.com/free-samples/des-algorithm-research-paper-sample/
"Des Algorithm Research Paper Sample." WowEssays, Dec 02, 2019. Accessed February 28, 2021. https://www.wowessays.com/free-samples/des-algorithm-research-paper-sample/
WowEssays. 2019. "Des Algorithm Research Paper Sample." Free Essay Examples - WowEssays.com. Retrieved February 28, 2021. (https://www.wowessays.com/free-samples/des-algorithm-research-paper-sample/).
"Des Algorithm Research Paper Sample," Free Essay Examples - WowEssays.com, 02-Dec-2019. [Online]. Available: https://www.wowessays.com/free-samples/des-algorithm-research-paper-sample/. [Accessed: 28-Feb-2021].
Des Algorithm Research Paper Sample. Free Essay Examples - WowEssays.com. https://www.wowessays.com/free-samples/des-algorithm-research-paper-sample/. Published Dec 02, 2019. Accessed February 28, 2021.
Copy
Share with friends using:
We accept sample papers from students via the submission form. If this essay belongs to you and you no longer want us to display it, you can put a claim on it and we will remove it. Just fill out the removal request form with all necessary details, such as page location and some verification of you being a true owner. Please note that we cannot guarantee that unsubstantiated claims will be satisfied.