Synch of PGG (was Re: Gnus 5.10.6 problems with PGP/MIME (test cases))

[Katsumi Yamaoka <yamaoka@jpl.org>]

>>>>> In <75578.1137605102@juniper.net> Mark D. Baushke wrote:

>> I will install your patch if no one comments.

> Thank you.

I've applied the --textmode patch to the Gnus CVS trunk.
However, oops, it has already been added to the v5-10 branch
(i.e., Gnus 5.10.7).  Besides this, some changes not synch'd
with the trunk have been made in the v5-10 branch.  Is there any
reason we don't merge them into the trunk?  Here they are:

2005-11-04 Ken Manheimer  <ken.manheimer@gmail.com>

	* pgg-pgp.el (pgg-pgp-encrypt-region, pgg-pgp-decrypt-region)
	(pgg-pgp-encrypt-symmetric-region, pgg-pgp-encrypt-symmetric)
	(pgg-pgp-encrypt, pgg-pgp-decrypt-region, pgg-pgp-decrypt)
	(pgg-pgp-sign-region, pgg-pgp-sign): Add optional 'passphrase'
	argument to all these routines, so the passphrase can be managed
	externally and passed in to the system.
	(pgg-pgp-decrypt-region, pgg-pgp-sign-region): Use new name for
	pgg-add-passphrase-to-cache function.

	* pgg-pgp5.el (pgg-pgp5-encrypt-region, pgg-pgp5-decrypt-region)
	(pgg-pgp5-encrypt-symmetric-region, pgg-pgp5-encrypt-symmetric)
	(pgg-pgp5-encrypt, pgg-pgp5-decrypt-region, pgg-pgp5-decrypt)
	(pgg-pgp5-sign-region, pgg-pgp5-sign): Add optional 'passphrase'
	argument to all these routines, so the passphrase can be managed
	externally and passed in to the system.
	(pgg-pgp5-sign-region): Use new name of	pgg-add-passphrase-to-cache
	function.

2005-10-29  Ken Manheimer  <ken.manheimer@gmail.com>

	* pgg-gpg.el (pgg-gpg-select-matching-key): Fix: look at the right
	part of the decoded armor to find the key-identifier.
	(pgg-gpg-lookup-key-owner): New function to return the
	human-readable identifier of a key owner.
	(pgg-gpg-lookup-id-from-key-owner): Make it easy to identify the
	key itself.
	(pgg-gpg-decrypt-region): Prompt with the key owner (rather than
	the key value) if we have a key and can match it against a secret
	key.  Also, added a note pointing out fact that the prompt only
	indicates the first matching key.

	* pgg.el (pgg-decrypt): Passing along 'passphrase' in call to
	pgg-decrypt-region.
	(pgg-pending-timers): A new hash for tracking the passphrase cache
	timers, so that new ones supercede old ones.
	(pgg-add-passphrase-to-cache): Rename from
	`pgg-add-passphrase-cache' to reduce confusion (all callers
	changed).  Modified to cancel old timers when new ones are added.
	(pgg-remove-passphrase-from-cache): Rename from
	`pgg-remove-passphrase-cache' to reduce confusion (all callers
	changed).  Modified to cancel old timers when their keys are
	removed from the cache.
	(pgg-cancel-timer): In Emacs, an alias for cancel-timer; in
	XEmacs, an indirection to delete-itimer.
	(pgg-read-passphrase-from-cache, pgg-read-passphrase):
	Extract pgg-read-passphrase-from-cache from pgg-read-passphrase so
	users can only check cache without risk of prompting.  Correct bug in
	notruncate behavior.
	(pgg-read-passphrase-from-cache, pgg-read-passphrase)
	(pgg-add-passphrase-cache, pgg-remove-passphrase-cache):
	Add informative docstrings.
	(pgg-decrypt): Convey provided passphrase in subordinate call to
	pgg-decrypt-region.

2005-10-20  Ken Manheimer <ken.manheimer+emacs@gmail.com>

	* pgg.el (pgg-encrypt-region, pgg-encrypt-symmetric-region)
	(pgg-encrypt-symmetric, pgg-encrypt, pgg-decrypt-region)
	(pgg-decrypt, pgg-sign-region, pgg-sign): Add optional
	'passphrase' argument, so the passphrase can be managed externally
	and then passed in to the system.

	* pgg.el (pgg-read-passphrase, pgg-add-passphrase-cache)
	(pgg-remove-passphrase-cache): Add optional 'notruncate' argument,
	so the passphrase cache can be used reliably with identifiers
	besides a pgp packet's key id.

	* pgg-gpg.el (pgg-pgp-encrypt-region)
	(pgg-pgp-encrypt-symmetric-region, pgg-pgp-encrypt-symmetric)
	(pgg-pgp-encrypt, pgg-pgp-decrypt-region, pgg-pgp-decrypt)
	(pgg-pgp-sign-region, pgg-pgp-sign): Add optional 'passphrase'
	argument to all these routines, so the passphrase can be managed
	externally and passed in to the system.

	* pgg-gpg.el (pgg-gpg-possibly-cache-passphrase): Add optional
	'notruncate' argument, so the passphrase cache can be used
	reliably with identifiers besides a pgp packet's key id.

2005-10-29  Sascha Wilde  <swilde@sha-bang.de>

	* pgg-gpg.el (pgg-gpg-encrypt-symmetric-region): New function for
	symmetric encryption.
	(pgg-gpg-symmetric-key-p): New function to check for an symmetric
	encrypted session key.
	(pgg-gpg-decrypt-region): When decrypting a symmetric encrypted
	message ask for the passphrase in a proper way.

	* pgg.el (pgg-encrypt-symmetric, pgg-encrypt-symmetric-region):
	New user commands for symmetric encryption.