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- This version has quite a few major bug fixes and improvements. It DOES NOT
- do SSLv3 yet.
-
- The main things changed
- - A Few days ago I added the s_mult application to ssleay which is
- a demo of an SSL server running in an event loop type thing.
- It supports non-blocking IO, I have finally gotten it right, SSL_accept()
- can operate in non-blocking IO mode, look at the code to see how :-).
- Have a read of doc/s_mult as well. This program leaks memory and
- file descriptors everywhere but I have not cleaned it up yet.
- This is a demo of how to do non-blocking IO.
- - The SSL session management has been 'worked over' and there is now
- quite an expansive set of functions to manipulate them. Have a read of
- doc/session.doc for some-things I quickly whipped up about how it now works.
- This assume you know the SSLv2 protocol :-)
- - I can now read/write the netscape certificate format, use the
- -inform/-outform 'net' options to the x509 command. I have not put support
- for this type in the other demo programs, but it would be easy to add.
- - asn1parse and 'enc' have been modified so that when reading base64
- encoded files (pem format), they do not require '-----BEGIN' header lines.
- The 'enc' program had a buffering bug fixed, it can be used as a general
- base64 -> binary -> base64 filter by doing 'enc -a -e' and 'enc -a -d'
- respecivly. Leaving out the '-a' flag in this case makes the 'enc' command
- into a form of 'cat'.
- - The 'x509' and 'req' programs have been fixed and modified a little so
- that they generate self-signed certificates correctly. The test
- script actually generates a 'CA' certificate and then 'signs' a
- 'user' certificate. Have a look at this shell script (test/sstest)
- to see how things work, it tests most possible combinations of what can
- be done.
- - The 'SSL_set_pref_cipher()' function has been 'fixed' and the prefered name
- of SSL_set_cipher_list() is now the correct API (stops confusion :-).
- If this function is used in the client, only the specified ciphers can
- be used, with preference given to the order the ciphers were listed.
- For the server, if this is used, only the specified ciphers will be used
- to accept connections. If this 'option' is not used, a default set of
- ciphers will be used. The SSL_CTX_set_cipher_list(SSL_CTX *ctx) sets this
- list for all ciphers started against the SSL_CTX. So the order is
- SSL cipher_list, if not present, SSL_CTX cipher list, if not
- present, then the library default.
- What this means is that normally ciphers like
- NULL-MD5 will never be used. The only way this cipher can be used
- for both ends to specify to use it.
- To enable or disable ciphers in the library at build time, modify the
- first field for the cipher in the ssl_ciphers array in ssl/ssl_lib.c.
- This file also contains the 'pref_cipher' list which is the default
- cipher preference order.
- - I'm not currently sure if the 'rsa -inform net' and the 'rsa -outform net'
- options work. They should, and they enable loading and writing the
- netscape rsa private key format. I will be re-working this section of
- SSLeay for the next version. What is currently in place is a quick and
- dirty hack.
- - I've re-written parts of the bignum library. This gives speedups
- for all platforms. I now provide assembler for use under Windows NT.
- I have not tested the Windows 3.1 assembler but it is quite simple code.
- This gives RSAprivate_key operation encryption times of 0.047s (512bit key)
- and 0.230s (1024bit key) on a pentium 100 which I consider reasonable.
- Basically the times available under linux/solaris x86 can be achieve under
- Windows NT. I still don't know how these times compare to RSA's BSAFE
- library but I have been emailing with people and with their help, I should
- be able to get my library's quite a bit faster still (more algorithm changes).
- The object file crypto/bn/asm/x86-32.obj should be used when linking
- under NT.
- - 'make makefile.one' in the top directory will generate a single makefile
- called 'makefile.one' This makefile contains no perl references and
- will build the SSLeay library into the 'tmp' and 'out' directories.
- util/mk1mf.pl >makefile.one is how this makefile is
- generated. The mk1mf.pl command take several option to generate the
- makefile for use with cc, gcc, Visual C++ and Borland C++. This is
- still under development. I have only build .lib's for NT and MSDOS
- I will be working on this more. I still need to play with the
- correct compiler setups for these compilers and add some more stuff but
- basically if you just want to compile the library
- on a 'non-unix' platform, this is a very very good file to start with :-).
- Have a look in the 'microsoft' directory for my current makefiles.
- I have not yet modified things to link with sockets under Windows NT.
- You guys should be able to do this since this is actually outside of the
- SSLeay scope :-). I will be doing it for myself soon.
- util/mk1mf.pl takes quite a few options including no-rc, rsaref and no-sock
- to build without RC2/RC4, to require RSAref for linking, and to
- build with no socket code.
-
- - Oh yes, the cipher that was reported to be compatible with RSA's RC2 cipher
- that was posted to sci.crypt has been added to the library and SSL.
- I take the view that if RC2 is going to be included in a standard,
- I'll include the cipher to make my package complete.
- There are NO_RC2, NO_RC4 and NO_IDEA macros to remove these ciphers
- at compile time. I have not tested this recently but it should all work
- and if you are in the USA and don't want RSA threatening to sue you,
- you could probably remove the RC4/RC2 code inside these sections.
- I may in the future include a perl script that does this code
- removal automatically for those in the USA :-).
- - I have removed all references to sed in the makefiles. So basically,
- the development environment requires perl and sh. The build environment
- does not (use the makefile.one makefile).
- The Configure script still requires perl, this will probably stay that way
- since I have perl for Windows NT :-).
-
- eric (03-May-1996)
-
- PS Have a look in the VERSION file for more details on the changes and
- bug fixes.
-