On Tue, Jan 09, 2001 at 03:42:45PM -0800, Xiao, Peter wrote:
Hi,
I am currently looking for crypto implementation that can fit into small footprint (in the order of 50K or less) devices. Ideally, an SSL type of protocol meets my requirements but it is almost impossible to implement it within 50K even with selected cipher suites. So, I am looking for alternatives (either symmetric key or public key based). I was thinking about WTLS but looks like its implementation can not be significantly smaller than that of TLS since it is also based on Public Key cryptography (I am wondering how it fits into a cellphone). Can any one tell me what is the approximate size of the client implementation of WTLS. Also, would anyone send some pointers to me regarding what I am looking for.
Thanks in advance!!
Peter
It's not the public-key operations themselves that use the space. I've managed to squeeze OAEP-formatted RSA encryption into less than 20K. The public key was hard-wired, though. You probably want to stay away from ASN.1 formatted data if space is a concern. Gé -- -- Gé Weijers Voice: (614)485-2900 Sun Microsystems Fax: (614)485-2929 Server Appliance Business Unit 1160 Dublin Rd., Ste 100, Columbus OH 43215