Extended password encryption

The extended password encryption feature enhances the existing symmetrical key type password encryption provided with Open Client libraries.

A symmetrical key type uses the same key to encrypt and decrypt the password. An asymmetrical key type uses one key to encrypt the password and another to decrypt the password. The new enhanced password encryption uses an asymmetrical key type instead of the original symmetrical key type. This allows Sybase applications to transmit strong public key passwords via networks providing a secure handshake protocol for password-based authentication.