Hi....
I've got some questions ;-)
About the differences between what OpenPGP (RFC2440) specifies and what
GnuPG does:
1) I've created my key with "openpgp" in the config file,... so
everything should have been absolutely rfc2440 confomant, right?
Ok, but:
Command> showpref
pub 4096R/5BB9A53D created: 2005-10-28 expires: never usage: CS
trust: unknown validity: unknown
[ unknown] (1). Christoph Anton Mitterer
Cipher: AES256, AES192, AES, CAST5, 3DES
Digest: SHA1, RIPEMD160
Compression: ZLIB, ZIP, Uncompressed
Features: MDC, Keyserver no-modify
[ unknown] (2) Christoph Anton Mitterer <[EMAIL PROTECTED]>
Cipher: AES256, AES192, AES, CAST5, 3DES
Digest: SHA1, RIPEMD160
Compression: ZLIB, ZIP, Uncompressed
Features: MDC, Keyserver no-modify
[ unknown] (3) Christoph Anton Mitterer
<[EMAIL PROTECTED]>
Cipher: AES256, AES192, AES, CAST5, 3DES
Digest: SHA1, RIPEMD160
Compression: ZLIB, ZIP, Uncompressed
Features: MDC, Keyserver no-modify
... as you can see, MDC is set. Referring to
http://lists.gnupg.org/pipermail/gnupg-users/2003-May/018442.html and
RFC2440 I assume that MDC is still not part of the standard. Why is it
activated in my key? (Of course this is a good thing, but I just wonder
that if "openpgp" did not work for MDC, other things might be
"incompatible", too)
2) What other things does GPG that are beyond RFC2440?
a) I've had that discussion with David about backsignatures which use
0x19 sigs or so (he didn't answer yet, so I'm not sure if this is
RFC2440 compliant).
b) rfc 2440 seems to specify values only for MD5 and SHA1 but not for
SHAxxx, RIPEMD160, etc. same thing with AESxxx and other modern
symmetric algorithms. Same thing with bzip2.
=> Are these things standardized or not? If not yet, is the working
groupt on OpenPGP going to use the same values as GPG uses? What if not?
If some have been already standardized: Where? *G*
=> Any other things like this, where GPG goes beyond rfc2440?
(btw: can PGP (the commercial one) open signatures/messages using AESxxx
as cipher and SHAxxx as hash?)
3) Are there any other flags like MDC? I know about keyserver-no-modify
but that is documented in RFC2440.
4) Does GnuPG support 0x10 (private key split) and 0x80 (group key) for
the key usage flag?
Best wishes,
Chris.
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