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-rw-r--r--doc/OpenPGP17
1 files changed, 11 insertions, 6 deletions
diff --git a/doc/OpenPGP b/doc/OpenPGP
index c73eee4f8..a511ad7fd 100644
--- a/doc/OpenPGP
+++ b/doc/OpenPGP
@@ -8,11 +8,7 @@
Compatibility Notes
===================
- GnuPG (>0.4.5) is in compliance with RFC2440 despite these exceptions:
-
- * (9.1) states that RSA SHOULD be implemented. This is not done
- (except with an extension, usable outside the U.S.) due to
- patent problems.
+ GnuPG (>=1.0.3) is in compliance with RFC2440 despite these exceptions:
* (9.2) states that IDEA SHOULD be implemented. This is not done
due to patent problems.
@@ -21,7 +17,7 @@
All MAY features are implemented with this exception:
* multi-part armored messages are not supported.
- MIME should be used instead.
+ MIME (rfc2015) should be used instead.
Most of the OPTIONAL stuff is implemented.
@@ -33,6 +29,15 @@
which can be considered to be in compliance with RFC1991; this
format is only created if a special option is active.
+ GnuPG uses a S2K mode of 101 for GNU extensions to the secret key
+ protection algorithms. This number is not defined in OpenPGP, but
+ given the fact that this number is in a range which used at many
+ other places in OpenPGP for private/experimenat algorithm identifiers,
+ this should be not a so bad choice. The 3 bytes "GNU" are used
+ to identify this as a GNU extension - see the file DETAILS for a
+ definition of the used data formats.
+
+
Some Notes on OpenPGP / PGP Compatibility:
==========================================