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Release apon comp.sources.misc
Version 3.01 08/10/93
    Added des_3cbc_encrypt()

Version 3.00 07/10/93
    Fixed up documentation.
    quad_cksum definitly compatable with MIT's now.

Version 2.30 24/08/93
    Tripple DES now defaults to tripple cbc but can do tripple ecb
     with the -b flag.
    Fixed some MSDOS uuen/uudecoding problems, thanks to
    Added prototypes.
    
Version 2.22 29/06/93
    Fixed a bug in des_is_weak_key() which stopped it working :-(
    thanks to [e-mail].

Version 2.21 03/06/93
    des(1) with no arguments gives quite a bit of help.
    Added -c (generate ckecksum) flag to des(1).
    Added -3 (tripple DES) flag to des(1).
    Added cfb and ofb routines to the library.

Version 2.20 11/03/93
    Added -u (uuencode) flag to des(1).
    I have been playing with byte order in quad_cksum to make it
     compatible with MIT's version.  All I can say is aviod this
     function if possible since MIT's output is endian dependent.

Version 2.12 14/10/92
    Added MSDOS specific macro in ecb_encrypt which gives a %70
     speed up when the code is compiled with turbo C.

Version 2.11 12/10/92
    Speedup in set_key (recoding of PC-1)
     I now do it in 47 simple operations, down from 60.
     Thanks to John Fletcher ([e-mail])
     for motivating me to look for a faster system :-)
     The speedup is probably less that 1% but it is still 13
     instructions less :-).

Version 2.10 06/10/92
    The code now works on the 64bit ETA10 and CRAY without modifications or
     #defines.  I believe the code should work on any machine that
     defines long, int or short to be 8 bytes long.
    Thanks to Shabbir J. Safdar ([e-mail])
     for helping me fix the code to run on 64bit machines (he had
     access to an ETA10).
    Thanks also to John Fletcher <[e-mail]>
     for testing the routines on a CRAY.
    read_password.c has been renamed to read_passwd.c
    string_to_key.c has been renamed to string2key.c

Version 2.00 14/09/92
    Made mods so that the library should work on 64bit CPU's.
    Removed all my uchar and ulong defs.  To many different
     versions of unix define them in their header files in too many
     different combinations :-)
    IRIX - Sillicon Graphics mods (mostly in read_password.c).
     Thanks to Andrew Daviel ([e-mail])

Version 1.99 26/08/92
    Fixed a bug or 2 in enc_read.c
    Fixed a bug in enc_write.c
    Fixed a pseudo bug in fcrypt.c (very obscure).

Version 1.98 31/07/92
    Support for the ETA10.  This is a strange machine that defines
    longs and ints as 8 bytes and shorts as 4 bytes.
    Since I do evil things with long * that assume that they are 4
    bytes.  Look in the Makefile for the option to compile for
    this machine.  quad_cksum appears to have problems but I
    will don't have the time to fix it right now, and this is not
    a function that uses DES and so will not effect the main uses
    of the library.

Version 1.97 20/05/92 eay
    Fixed the Imakefile and made some changes to des.h to fix some
    problems when building this package with Kerberos v 4.

Version 1.96 18/05/92 eay
    Fixed a small bug in string_to_key() where problems could
    occur if des_check_key was set to true and the string
    generated a weak key.

Patch2 posted to comp.sources.misc
Version 1.95 13/05/92 eay
    Added an alternative version of the D_ENCRYPT macro in
    ecb_encrypt and fcrypt.  Depending on the compiler, one version or the
    other will be faster.  This was inspired by 
    Dana How <[e-mail]>, and her pointers about doing the
    *(ulong *)((uchar *)ptr+(value&0xfc))
    vs
    ptr[value&0x3f]
    to stop the C compiler doing a <<2 to convert the long array index.

Version 1.94 05/05/92 eay
    Fixed an incompatibility between my string_to_key and the MIT
     version.  When the key is longer than 8 chars, I was wrapping
     with a different method.  To use the old version, define
     OLD_STR_TO_KEY in the makefile.  Thanks to
     [e-mail] (Viktor Dukhovni).

Version 1.93 28/04/92 eay
    Fixed the VMS mods so that echo is now turned off in
     read_password.  Thanks again to [e-mail].
    MSDOS support added.  The routines can be compiled with
     Turbo C (v2.0) and MSC (v5.1).  Make sure MSDOS is defined.

Patch1 posted to comp.sources.misc
Version 1.92 13/04/92 eay
    Changed D_ENCRYPT so that the rotation of R occurs outside of
     the loop.  This required rotating all the longs in sp.h (now
     called spr.h). Thanks to Richard Outerbridge <[e-mail]>
    speed.c has been changed so it will work without SIGALRM.  If
     times(3) is not present it will try to use ftime() instead.

Version 1.91 08/04/92 eay
    Added -E/-D options to des(1) so it can use string_to_key.
    Added SVR4 mods suggested by [e-mail]
    Added VMS mods suggested by [e-mail].  If
    anyone knows how to turn of tty echo in VMS please tell me or
    implement it yourself :-).
    Changed FILE *IN/*OUT to *DES_IN/*DES_OUT since it appears VMS
    does not like IN/OUT being used.

Libdes posted to comp.sources.misc
Version 1.9 24/03/92 eay
    Now contains a fast small crypt replacement.
    Added des(1) command.
    Added des_rw_mode so people can use cbc encryption with
    enc_read and enc_write.

Version 1.8 15/10/91 eay
    Bug in cbc_cksum.
    Many thanks to Keith Reynolds ([e-mail]) for pointing this
    one out.

Version 1.7 24/09/91 eay
    Fixed set_key :-)
    set_key is 4 times faster and takes less space.
    There are a few minor changes that could be made.

Version 1.6 19/09/1991 eay
    Finally go IP and FP finished.
    Now I need to fix set_key.
    This version is quite a bit faster that 1.51

Version 1.52 15/06/1991 eay
    20% speedup in ecb_encrypt by changing the E bit selection
    to use 2 32bit words.  This also required modification of the
    sp table.  There is still a way to speedup the IP and IP-1
    (hints from [e-mail]) still working on this one :-(.

Version 1.51 07/06/1991 eay
    Faster des_encrypt by loop unrolling
    Fixed bug in quad_cksum.c (thanks to [e-mail])

Version 1.50 28/05/1991 eay
    Optimized the code a bit more for the sparc.  I have improved the
    speed of the inner des_encrypt by speeding up the initial and
    final permutations.

Version 1.40 23/10/1990 eay
    Fixed des_random_key, it did not produce a random key :-(

Version 1.30  2/10/1990 eay
    Have made des_quad_cksum the same as MIT's, the full package
    should be compatible with MIT's
    Have tested on a DECstation 3100
    Still need to fix des_set_key (make it faster).
    Does des_cbc_encrypts at 70.5k/sec on a 3100.

Version 1.20 18/09/1990 eay
    Fixed byte order dependencies.
    Fixed (I hope) all the word alignment problems.
    Speedup in des_ecb_encrypt.

Version 1.10 11/09/1990 eay
    Added des_enc_read and des_enc_write.
    Still need to fix des_quad_cksum.
    Still need to document des_enc_read and des_enc_write.

Version 1.00 27/08/1990 eay