[Download postscript version]
...Project
STS stands for Science Techniques Society
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...Internet.
You can now even order a pizza through the Internet.
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...cattle
Camels in North Africa
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...
A cipher is a method of cryptography by applying an algorithm to the letters or digits of the plaintext [DP92].
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...satisfactory
For several ciphers, weak numbers exist, for which the complexity to break the ciphertext is relaxed.
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...LUCIFER
LUCIFER was the predecessor of DES and was developed by IBM in the early 1970s.
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...S-boxes
An S-Box is a substitution operation which scrambles the input string (changes the position of the bytes)
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...problems
The requirements were a high level of security, completely specified and easy to understand, economical to implement and efficient to use, among other reasons.
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...triple-DES
Triple-DES is implemented by applying 3 times DES to the data.
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...impostor
It is not difficult for malicious hackers to intercept and forge E-mails.
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...Mondex
Mondex did not describe the problem in their documentation and did therefore not state to have solved it either.
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...cash
like the one provided by DigiCash
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...problem.
In 1993, card fraud cost English banks about 130 million pounds [WCP1#195].
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Adrian Perrig
Fri May 31 09:07:38 MET DST 1996