y bytea [, psw text [, options text ]]) returns bytea
</pre><p>
    Decrypt a public-key-encrypted message.  <em class="parameter"><code>key</code></em> must be the
    secret key corresponding to the public key that was used to encrypt.
    If the secret key is password-protected, you must give the password in
    <em class="parameter"><code>psw</code></em>.  If there is no password, but you want to specify
    options, you need to give an empty password.
   </p><p>
    Decrypting <code class="type">bytea<