Lists the keysets in a CSP (see the ListKeys method).
The 'callback' is called when the 'KeyList' event is emited.
The argument 'e' has the following properties:
e.keyContainer e.keyType e.algId e.keyLen
The KeyContainer parameter is the name used to identify the keyset (public/private key pair) when it was first created.
KeyType shows the key type: 1 for key exchange (encryption) keys, and 2 for digital signature keys.
KeyLen shows the length of the public key (in bits).