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- Newsgroups: sci.crypt
- Path: sparky!uunet!mcsun!sun4nl!fwi.uva.nl!gene.fwi.uva.nl!lankeste
- From: lankeste@fwi.uva.nl (Branko Lankester)
- Subject: PGP 2.0 Announcement
- Message-ID: <1992Sep7.202207.12500@fwi.uva.nl>
- Sender: news@fwi.uva.nl
- Nntp-Posting-Host: gene.fwi.uva.nl
- Organization: FWI, University of Amsterdam
- Date: Mon, 7 Sep 1992 20:22:07 GMT
- Lines: 66
-
-
- PGP version 2.0 Available
- -------------------------
-
- This note assumes you are familiar with PGP (Pretty Good Privacy),
- the freeware public key cryptographic software package.
-
- Philip Zimmermann is under threat of lawsuit from the RSA patent
- holders, Public Key Partners, if he distributes or updates PGP again.
- Zimmermann has abided by that condition and has not distributed PGP
- since the threat was made. So any enhancements for PGP have to be
- developed by other people, preferably outside the reach of US patent
- law. The RSA patent does not apply outside the USA. Accordingly,
- PGP Version 2.0 was developed by a team of software engineers in
- Europe and New Zealand, with design guidance from Philip Zimmermann.
- It was released September 3 by Branko Lankester in Amsterdam and
- Peter Gutmann in New Zealand.
-
- The new version has many ergonomic improvements, much better key
- management, faster and better conventional cryptography, faster
- public key cryptography, and faster and better data compression. It
- also has been ported to SPARC Unix, Ultrix, VAX/VMS, Commodore Amiga,
- Atari ST, OS/2, and of course it still runs on MSDOS.
-
- The RSA math functions are about 2.28 times as fast (as measured on
- an MSDOS system). The new signature hashing algorithm is MD5. The
- new compression routines are similar in functionality to those used
- in PKZIP, and were developed in C by a French team. The new faster
- conventional cipher, called IDEA (International Data Encryption
- Algorithm), was developed at ETH in Zurich by James L. Massey and
- Xuejia Lai. Preliminary evidence suggests that IDEA may be more
- resistant than the DES to Biham & Shamir's highly successful
- differential cryptanalysis attack. Biham and Shamir have tried
- unsuccessfully to find any weaknesses in the IDEA cipher.
-
- The keys on the public keyring retain their certifying signatures
- while on the keyring, and can be automatically checked for tampering
- by PGP before using the keys. They can be individually copied off
- the keyring along with their attached signature certificates, in
- ASCII form suitable for emailing. Each key may have several attached
- certifying signatures. User ID's and passwords can be revised by the
- key owner. When a user ID is modified for a key, new certifying
- signatures must be created for that key.
-
- The ASCII transport armor changed from uuencoded form to another
- ASCII radix-64 representation similar to that used by the Internet
- PEM standard. This makes PGP messages more resistant to mutilation
- by strange email gateways.
-
- The new PGP is more usable in batch mode, returning error result
- codes to the DOS shell. It can also be used to some extent in a
- pipeline filter mode for Unix.
-
- There are too many ergonomic improvements to list here. One example
- is a built-in Unix-style "more" function, to optionally display
- deciphered plaintext directly on your screen without writing any
- plaintext to disk. Also, all the PGP user messages and prompts can
- be displayed in German, Dutch, Spanish, French, Italian, and Russian.
-
- There are other improvements in the area of key management.
- Zimmermann's new key management is even more uniquely suited to
- socially decentralized environments, rather than to monolithic
- corporate or government institutions.
-
- PGP 2.0 is available on ghost.dsi.unimi.it in directory pub/crypt.
-
-