If I lost my public keys, could I recover them from the private key? Possible Duplicate:
  How are public &amp; private keys in an address created?  




If I lost my public key, but still have the private key, is it possible to recreate the public keys.

How many public keys can be made from one private key?

Is it a computationally expensive process to create all the public keys from one private key?

Sincerely,

Joe.
Relation is one private key generates one public key and it is possible to recreate the public key. You can't recreate the private key though, so if you lose them, you lose all coins associated with that key.

It is not computationally expensive to generate or recover keypairs, but you need specific programs for that support secp256k1 elliptic curve cryptography.