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Data Encryption Standard, a widely used
method of data Encryption judged so difficult to break by the US
government that its export to other countries was prohibited. Based on a
1970s ibm Algorithm called Lucifer, Des was Adopted as an official
standard by the US government in 1977. It uses a private key method,
on which one of 72 quadrillion keys is used to encode and decode a message.
A sample des message was cracked in June 1997 by deschall, a
project involving thousands of people and computers linked by the internet
using a brute force attack to test all the possible keys. (see distributed
computing.) |
