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<H2>BIND Configuration File Guide--<CODE>trusted-keys</CODE> Statement</H2>

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<A NAME="Syntax"><H3>Syntax</H3></A>

<PRE>
trusted-keys { 
  [ <VAR><A HREF="docdef.html">domain_name</A></VAR> <VAR><A HREF="docdef.html">number</A></VAR> <VAR><A HREF="docdef.html">number</A></VAR> <VAR><A HREF="docdef.html">number</A></VAR> <VAR>string</VAR>; ]
};

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<A NAME="Usage"><H3>Definition and Usage</H3></A>

The <CODE>trusted-keys</CODE>
statement is for use with DNSSEC-style security, originally specified
in RFC 2065.  DNSSEC is meant to 
provide three distinct services: key distribution, data origin
authentication, and transaction and request authentication.  A
complete description of DNSSEC and its use is beyond the scope of this
document, and readers interested in more information should start with
<A HREF="http://info.internet.isi.edu/in-notes/rfc/files/rfc2065.txt">
RFC 2065</A> and then continue with the
<A HREF="http://www.ietf.org/ids.by.wg/dnssec.html">
Internet Drafts</A>.</P>

<P>Each trusted key is associated with a domain name.  Its attributes are
the non-negative integral <VAR>flags</VAR>, <VAR>protocol</VAR>, and
<VAR>algorithm</VAR>, as well as a base-64 encoded string representing
the key.</P>

A trusted key is added when a public key for a non-authoritative zone is
known, but cannot be securely obtained through DNS.  This occurs when
a signed zone is a child of an unsigned zone.  Adding the trusted
key here allows data signed by that zone to be considered secure.</P>

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