Re: Win2K CryptAPI : Way to encrypt w/ Pvt and decrypt w/ Pub key ?

From: Chris Kushnir (ckushni1_at_san.rr.com)
Date: 05/30/04 

Date: Sun, 30 May 2004 20:47:30 GMT

Eugene,

> I would like my server to be able to broadcast small messages to connected
> clients. I was hoping to have the server encrypt the message with it's
> private exchange key so the clients could decrypt with the servers public
> exchange key to verify the message source as being the server.

>> This is called signing and there are several functions in CryptoAPI to do
this.

Yes, I realized the sign/verify in the CryptAPI signed with private,
verified with public. The problem is that the verify (as i read it) only
tells you yes or no, there is no way to recover the signed data. I
understand that the general way to do this is to hash the message, then sign
the hash. As my messages are generally less than 32 bytes I was hoping I
could just encrypt the entire message.

thanks,
...cmk

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