Patch: wtls provision

Dear friends,

This is a long overdue contribution to kannel's wap. It will provide wtls functionality. It has been thoroughly tested in Solaris, and compiles cleanly in Linux.

I used indent to format the structure, so a lot of the differences will be formatting. Nevertheless, there is a lot of code in there that needed to make it work. Let me know if the cvs diff is the best way to submit it, or whether a tarball of the sources would be better. I've have had some issues with cvs diff in the past, so if you get any compilation warnings, I may have to go with a tarball.

In particular it will provide:

A) Supported MACs:

        SHA_0,
        SHA_40,
        SHA_80,
        SHA_NOLIMIT,
        MD5_40,
        MD5_80,
        MD5_NOLIMIT

MIA's:
         SHA_XOR_40

B) Supported Ciphers:

        RC5_CBC_40,
        RC5_CBC_56,
        RC5_CBC,
        DES_CBC,
        DES_CBC_40

MIA's:
        NULL_bulk,
        TRIPLE_DES_CBC_EDE,
        IDEA_CBC_40,
        IDEA_CBC_56,
        IDEA_CBC

C) Supported Keys:

        RSA_anon

MIA's:
        RSA_anon_512,
        RSA_anon_768,
        RSA_NOLIMIT,
        RSA_512,
        RSA_768,
        ECDH_anon,
        ECDH_anon_113,
        ECDH_anon_131,
        ECDH_ECDSA_NOLIMIT

Keys might seem a shortcoming, but I have yet to see a mobile that doesn't support RSA_anon. I do expect that a few of the rest of the keys are supported as well (i.e. RSA_anon_512, RSA_anon_768) just didn't have the chance to test them.

Please vote and decide,
Nikos