gnupg/gnupg.txt at STABLE-BRANCH-1-4

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Werner Koch b1eac93431 Support the not anymore patented IDEA cipher algorithm.

* cipher/idea.c: New.  Take from Libgcrypt master and adjust for
direct use in GnuPG.
* cipher/idea-stub.c: Remove.
* cipher/Makefile.am: Add idea.c and remove idea-stub.c rules.
* configure.ac: Remove idea-stub code.
* g10/gpg.c (check_permissions): Remove code path for ITEM==2.
(main): Make --load-extension a dummy option.
* g10/keygen.c (keygen_set_std_prefs): Include IDEA only in PGP2
compatibility mode.
* g10/misc.c (idea_cipher_warn): Remove.  Also remove all callers.
* g10/seckey-cert.c (do_check): Remove emitting of STATUS_RSA_OR_IDEA.
* g10/status.c (get_status_string): Remove STATUS_RSA_OR_IDEA.
* g10/status.h (STATUS_RSA_OR_IDEA): Remove.

--

To keep the number of actually used algorithms low, we support IDEA
only in a basically read-only way (unless --pgp2 is used during key
generation).  It does not make sense to suggest the use of this old 64
bit blocksize algorithm.  However, there is old data available where
it might be helpful to have IDEA available.

2012-11-08 13:25:02 +01:00

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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the file COPYING.

%%name: GnuPG

%%short-description: Complete implementation of the OpenPGP Internet standard.

%%full-description: A complete and free replacement for PGP. The program does not use any patented algorithms, and can be used as a filter program. Can handle all OpenPGP messages and messages generated by PGP 5.0 and later.

Supports ElGamal (signature and encrytion), DSA, AES, 3DES, Blowfish, Twofish, CAST5, IDEA, MD5, SHA-1, RIPE-MD-160, and has language support for sixteen different languages.

It is believed to be fully OpenPGP (as defined in RFC2440) conform, and has integrated support for HKP keyservers. There are a lot of useful extra features like anonymous message recipients.

%%category: security, administration, email

%%license: GPL

%%maintainer: Werner Koch wk@gnupg.org

%%interface: Command line

%%updated: 1 Jun 2001

%%keywords: PGP, security, decryption, encryption, digital signatures

%%programs:

%%GNU: yes

%%web-page: http://www.gnupg.org/

%%support: Paid extension/consulting from http://www.g10code.com

%%doc: English user manual available from: http://www.gnupg.org/gph/index.html; Spanish user manual available from: http://www.gnupg.org/gph/index.html; English HOWTO available from http://www.dewinter.com/gnupg_howto/english/; French HOWTO available from http://www.gnupg.org/howtos/fr/; German HOWTO available from http://www.gnupg.org/howtos/de/; Spanish HOWTO available from http://www.dewinter.com/gnupg_howto/spanish.

%%developers: Matthew Skala, Michael Roth, Niklas Hernaeus, Remi Guyomarch, Werner Koch wk@gnupg.org.