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What are the advantages and disadvantages of data encryption algorithms?
Wiki User
∙ 11y ago
Advantages of DES over other algorithms:
- DES has been around a long time (since 1978) and has been studied to death. Even now no real weaknesses have been found: the most efficient attack is still brute force. Of course the 56-bit key size is a disadvantage - see below.
- DES is an official United States Government standard; the Government is required to re-certifyDES every five years and ask it be replaced if necessary. DES has been re-certified in 1983, 1987, 1992. (What happens this year?)
- DES is also an ANSI and ISO standard - anybody can learn the details and implement it.
- Since DES was designed to run on 1978 hardware, it is fast in hardware and relatively fast in software.
Disadvantages of DES:
- The 56-bit key size is the biggest defect of DES. Chips to perform one million of DES encrypt or decrypt operations a second are available (in 1993). A $1 million DES cracking machine can search the entire keyspace in about 7 hours.
- Hardware implementations of DES are very fast; DES was not designed for software and hence runs relatively slowly.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoYes it does eliminates eavesdropping, it also proves to be a very secure technique for cryptography as it makes use of quantum mechanics and has properties of photons in its core.
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