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* gpg.sgml: Warning not to try and parse --list-keys in scripts. Document

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the signature flags (1-3/L/R/P/N/X), Document expandos %g and %p.  Note
the default --personal-digest-preferences are "H2".

* DETAILS: Document the --attribute-fd data.
This commit is contained in:
David Shaw 2003-07-03 04:59:50 +00:00
parent dcc026f7e0
commit c1142ffd27
3 changed files with 69 additions and 11 deletions
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doc/DETAILS
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@ -425,6 +425,32 @@ more arguments in future versions.
0x04 = this attribute packet is expired
Format of the "--attribute-fd" output
=====================================
When --attribute-fd is set, during key listings (--list-keys,
--list-secret-keys) GnuPG dumps each attribute packet to the file
descriptor specified. --attribute-fd is intended for use with
--status-fd as part of the required information is carried on the
ATTRIBUTE status tag (see above).
The contents of the attribute data is specified by 2440bis, but for
convenience, here is the Photo ID format, as it is currently the only
attribute defined:
Byte 0-1: The length of the image header. Due to a historical
accident (i.e. oops!) back in the NAI PGP days, this is
a little-endian number. Currently 16 (0x10 0x00).
Byte 2: The image header version. Currently 0x01.
Byte 3: Encoding format. 0x01 == JPEG.
Byte 4-15: Reserved, and currently unused.
All other data after this header is raw image (JPEG) data.
Key generation
==============
Key generation shows progress by printing different characters to