CVS log for epic5/include/sedcrypt.h

Request diff between arbitrary revisions

* Revert commit 1498 (the dcc stuff) -- it was half baked.
* Fix warnings found with --with-warns.

* Fix it so it compiles without ssl support again.
* Add "ALL" $xform() encoder, returns all valid xforms

* Allow encryption $xform() handlers to reformat their keys, so we can...
* Add SHA256/AES/AESSHA $xform() encoders

* Fix happykey().  Sometimes, I just don't pay enough attention.
* Don't trim 1 too many chars on incoming encrypted messages. Important!
* Fix buffer sizes being too small to hold buffer for enc/dec short strings.
* Add $xform() handlers for blowfish and cast5
* Whip the $xform() callback functions into usable shape.
* Fix base64 encoding both via $xform() and $b64encode().
* Rewrite $xform(), see UPDATES.  Strong crypto now supported! YAY!

* Bust do_crypt back into its callers [de]crypt_msg().
* Make lookups between /encrypt flag<->cipher flag<->ctcp table-driven.

* Add SEDSHA cipher type, which is better than SED, and always available.
* Add my_sleep|isreadable|iswritable() funcs to phase out rogue selects()h
* Add support for multiple concurrent servers to /encrypt. yay!
* Store the length of the Crypt key within the key itself.
* This moves us closer to being able to decrypt arbitrary data.
* Test all of the cipher types, incl. compat of CAST with ircII.  All set!

___ WARNING ___ This stuff is all wildly un(der)tested.
I will get to that soon!  But I'm too excited about this to sit on it.

* Add AESSHA256 support (AES256 using the SHA256 digest of your passkey)
* Rename "EXTCRYPT" to "PROGCRYPT"
* Migrate SED support from crypt.c to crypto.c
* Integrate SED and extprog support into the mainline [de]cipher_message()
* Refactor [de]cipher_message() to be less lame.
* Support "anycrypt" support (AESSHA, AES, BLOWFISH, CAST5, SED, PROG)
* Include sha256 implementation from Karll.  Thanks Karll!
* Unify the ctcp handling of all crypto ctcps
* Add $sha256() function to test sha support (digest)
* Make funcs in crypto.c static and just expose [de]crypt_msg().
* This finishes the divide between crypt.c (front end) and crypto.c (back end)
* Fix a gazillion compiler warnings and sort out const/unsigned char issues.

AES support!

* Support cast5/blowfish encryption a la ircII.
* Fix build for non-ssl users.

* Numerous updates/changes/fixes to DCC, functions, scripts, /EXEC, the
  new math parser, as per UPDATES and KNOWNBUGS.

One potential incompatibility is in the change to $open(). (as per UPDATES)

* Misc bugfixes as per KNOWNBUGS.
* This patch involves renaming crypt.h to sedcrypt.h.