You can't decrypt information or validate a public key's signature with the hash of a private key. You need the actual private key unencrypted at some point; we

You can't decrypt information or validate a public key's signature with the hash of a private key. You need the actual private key unencrypted at some point; we solve this in most of our certs by encrypting them with a password that the user has to enter to decrypt, but access to the unencrypted private key is absolutely required at some point. Hashing is for passwords, not for keys.