Use Granger to generate rsa key pairs

[wtfbbqhax]

Instead of doing it from inside the client, generate the keypairs with granger in the background.

The client would have to detect and execute granger with a script that generates the keypair. The client would then need to detect that it is ready, or comunicate with Granger directly.

[jkent]

I'm interested working on this... with some help.