he default behavior is determined by the configuration
        parameter <A
HREF="runtime-config-connection.html#GUC-PASSWORD-ENCRYPTION"
>password_encryption</A
>.)  If the
        presented password string is already in MD5-encrypted format,
        then it is stored encrypted as-is, regardless of whether
        <TT
CLASS="LITERAL"
>ENCRYPTED</TT
> or <TT
CLASS="LITERAL"
>UNENCRYPTED</TT
> is specified
        (since the system cannot decrypt the specified encrypted
        password string).  This allows