> I couldn't find any resources for the creation and use of a public key using CRYPTOAPI.
> Not even books!!!!
> If somebody has worked with CRYPTOAPI

VFP 7.0 has a class library and a set of examples in the FFC (_crypt.vcx)
I wrote an article with examples on the use of this in CoDe Magazine two issues ago.
http://www.code-magazine.com

There are a few messages about it here in the UT.

MSDN has the wole documentation for the CAPI (albeit with examples mostly in C). You can get that in an MSDN subscription or on MSDN online.

There is also an article from FoxTalk in MSDN:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfoxtk00/html/ft00f10.asp

HTH