Timeline 1970-2000 AD

1971 IBM's work on the Lucifer cipher and the work of the NSA lead to the U.S. Data Encryption Standard (= DES)

1976 Whitfield Diffie and Martin Hellman publish their book New Directions in Cryptography, playing with the idea of public key cryptography

1977/78 the RSA algorithm is developed by Ron Rivest, Adi Shamir and Leonard M. Adleman and is published

1984 Congress passes Comprehensive Crime Control Act

- The Hacker Quarterly is founded

1986 Computer Fraud and Abuse Act is passed in the USA

- Electronic Communications Privacy Act

1987 Chicago prosecutors found Computer Fraud and Abuse Task Force

1988 U.S. Secret Service covertly videotapes a hacker convention

1989 NuPrometheus League distributes Apple Computer software

1990 - IDEA, using a 128-bit key, is supposed to replace DES

- Charles H. Bennett and Gilles Brassard publish their work on Quantum Cryptography

- Martin Luther King Day Crash strikes AT&T long-distance network nationwide


1991 PGP (= Pretty Good Privacy) is released as freeware on the Internet, soon becoming worldwide state of the art; its creator is Phil Zimmermann

- one of the first conferences for Computers, Freedom and Privacy takes place in San Francisco

- AT&T phone crash; New York City and various airports get affected

1993 the U.S. government announces to introduce the Clipper Chip, an idea that provokes many political discussions during the following years

1994 Ron Rivest releases another algorithm, the RC5, on the Internet

- the blowfish encryption algorithm, a 64-bit block cipher with a key-length up to 448 bits, is designed by Bruce Schneier

1990s work on quantum computer and quantum cryptography

- work on biometrics for authentication (finger prints, the iris, smells, etc.)

1996 France liberates its cryptography law: one now can use cryptography if registered

- OECD issues Cryptography Policy Guidelines; a paper calling for encryption exports-standards and unrestricted access to encryption products

1997 April European Commission issues Electronic Commerce Initiative, in favor of strong encryption

1997 June PGP 5.0 Freeware widely available for non-commercial use

1997 June 56-bit DES code cracked by a network of 14,000 computers

1997 August U.S. judge assesses encryption export regulations as violation of the First Amendment

1998 February foundation of Americans for Computer Privacy, a broad coalition in opposition to the U.S. cryptography policy

1998 March PGP announces plans to sell encryption products outside the USA

1998 April NSA issues a report about the risks of key recovery systems

1998 July DES code cracked in 56 hours by researchers in Silicon Valley

1998 October Finnish government agrees to unrestricted export of strong encryption

1999 January RSA Data Security, establishes worldwide distribution of encryption product outside the USA

- National Institute of Standards and Technologies announces that 56-bit DES is not safe compared to Triple DES

- 56-bit DES code is cracked in 22 hours and 15 minutes

1999 May 27 United Kingdom speaks out against key recovery

1999 Sept: the USA announce to stop the restriction of cryptography-exports

2000 as the German government wants to elaborate a cryptography-law, different organizations start a campaign against that law

- computer hackers do no longer only visit websites and change little details there but cause breakdowns of entire systems, producing big economic losses

for further information about the history of cryptography see:
http://www.clark.net/pub/cme/html/timeline.html
http://www.math.nmsu.edu/~crypto/Timeline.html
http://fly.hiwaay.net/~paul/cryptology/history.html
http://www.achiever.com/freehmpg/cryptology/hocryp.html
http://all.net/books/ip/Chap2-1.html
http://cryptome.org/ukpk-alt.htm
http://www.iwm.org.uk/online/enigma/eni-intro.htm
http://www.achiever.com/freehmpg/cryptology/cryptofr.html
http://www.cdt.org/crypto/milestones.shtml

for information about hacker's history see:
http://www.farcaster.com/sterling/chronology.htm:

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The Private against the Public?

"The multiple human needs and desires that demand privacy
among two or more people in the midst of social life must
inevitably lead to cryptology wherever men thrive
and wherever they write."

David Kahn, The Codebreakers

In the age of the vitreous man, whose data are not only collected by different institutions but kept under disclosure, out of reach, uncontrollable and unmanageable for the individual, privacy obtains new importance, receives a much higher value again.
The irony behind is that those who long for cryptography in order to preserve more privacy actually have to trust the same people who first created the methods to "produce" something like that vitreous man; of course not the same individual but persons of the same area of science. It is the reign of experts.
So far about self-determination.

for a rather aesthetic view on privacy and cryptography see:
http://www.t0.or.at/franck/d_franck.htm

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Timeline BC

~ 1900 BC: Egyptian writers use non-standard Hieroglyphs in inscriptions of a royal tomb; supposedly this is not the first but the first documented example of written cryptography

1500 an enciphered formula for the production of pottery is done in Mesopotamia

parts of the Hebrew writing of Jeremiah's words are written down in "atbash", which is nothing else than a reverse alphabet and one of the first famous methods of enciphering

4th century Aeneas Tacticus invents a form of beacons, by introducing a sort of water-clock

487 the Spartans introduce the so called "skytale" for sending short secret messages to and from the battle field

170 Polybius develops a system to convert letters into numerical characters, an invention called the Polybius Chequerboard.

50-60 Julius Caesar develops an enciphering method, later called the Caesar Cipher, shifting each letter of the alphabet an amount which is fixed before. Like atbash this is a monoalphabetic substitution.

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Governmental Regulations

The new U.S. regulations are based on the Wassenaar Arrangement Revision of 1998, where exports without license of 56 bit DES and similar products are allowed after a technical review, just like encryption commodities and software with key lengths of 64-bits or less which meet the mass market requirements.
For more information see:
http://www.wassenaar.org/

Seven states stay excluded from the new freedom. These are states like Libya, Iraq, Iran, North Korea and Cuba, altogether states seen as terrorist supporting. No encryption tools may be exported into those countries.

This is, what happened in the USA, whereas in Germany the issue of a cryptography-law is still on the agenda. Until now, in Germany, everyone can decide by her-/himself, whether she/he wants to encrypt electronic messages or not. Some organizations fear that this could get changed soon. Therefore an urgent action was organized in February 2000 to demonstrate the government that people want the freedom to decide on their own. One governmental argument is that only very few people actually use cryptography. Therefore the urgent action is organized as a campaign for using it more frequently.

For more information on this see:
http://www.heise.de/ct/97/04/032/
http://www.fitug.de/ulf/krypto/verbot.html#welt

Other European countries have more liberate laws on cryptography, like France. Austria doesn't have any restrictions at all, probably because of a governmental lack of interest more than accepting freedom.
The (former) restrictions in the bigger countries influenced and hindered developments for safer key-systems, e.g. the key-length was held down extraordinarily.

"Due to the suspicious nature of crypto users I have a feeling DES will be with us forever, we will just keep adding keys and cycles (...). There is a parallel between designing electronic commerce infrastructure today that uses weak cryptography (i.e. 40 or 56 bit keys) and, say, designing air traffic control systems in the '60s using two digit year fields. (...) Just because you can retire before it all blows up doesn't make it any less irresponsible."
(Arnold G. Reinhold)


The Chinese State Encryption Management Commission (SEMC) announced in March 2000 that only strong encryption tools will have to be registered in the future. Which sounds so nice on first sight, does not mean a lot in reality: any kind of useful encryption technique, like the PGP, stay under governmental control.

The restrictions and prohibitions for cryptography are part of the states' wish to acquire more control - in the name of the battle against criminality, probably?
Due to the emerging organized criminality the governments want to obtain more freedom of control over citizens. Organizations like the NSA appear as the leaders of such demands.
What about civil rights or Human Rights?

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Key Recovery Systems

As stated before the sense of cryptography is a properly designed cryptosystem making it essentially impossible to recover encrypted data without any knowledge of the used key. The issue of lost keys and the being-locked-out from one's own data as a consequence favors key recovery systems. On the other hand the counter argument is confidentiality: as soon as a possibility to recover a key is provided, the chances for abuses grow.
Finally it is the state that does not want to provide too much secrecy. On the contrary. During the last 20 years endless discussions about the state's necessity and right to restrict private cryptography have taken place, as the governments rarely care for the benefit of private users if they believe in catching essential informations about any kind of enemy, hence looking for unrestricted access to all keys.

The list of "key recovery," "key escrow," and "trusted third-party" as encryption requirements, suggested by governmental agencies, covers all the latest developments and inventions in digital technology.
At the same time the NSA, one of the world's most advanced and most secret enterprises for cryptography, worked hard in getting laws through to forbid the private use of strong encryption in one way or the other. Still, it is also organizations like this one that have to admit that key recovery systems are not without any weaknesses, as the U.S. Escrowed Encryption Standard, the basis for the famous and controversially discussed Clipper Chip, showed. The reason for those weaknesses is the high complexity of those systems.

Another aspect is that key recovery systems are more expensive and certainly much less secure than other systems. So, why should anyone use them?

In that context, one has to understand the legal framework for the use of cryptography, a strict framework in fact, being in high contradiction to the globalised flow of communication.

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Gaius Julius Caesar

Gaius Julius Caesar (100-44 BC) was a Roman Statesman who came to power through a military career and by buying of votes. His army won the civil war, run over Spain, Sicily and Egypt, where he made Cleopatra a Queen. For reaching even more power he increased the number of senators. But he also organized social measures to improve the people's food-situation. In February 44 BC he did not accept the kingship offered by Marc Anthony, which made him even more popular. One month later he was murdered during a senate sitting.

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skytale

The skytale (pronunciation: ski-ta-le) was a Spartan tool for encryption. It consisted of a piece of wood and a leather-strip. Any communicating party needed exactly the same size wooden stick. The secret message was written on the leather-strip that was wound around the wood, unwound again and sent to the recipient by a messenger. The recipient would rewound the leather and by doing this enciphering the message.

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