RFC 4035:Protocol Modifications for the DNS Securi...
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anchor


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... DNSKEY and DS RRs from a trusted security anchor to the RRset. In this case, the RRset ...
... Configured Trust Anchors ...
... validate signatures without such a configured trust anchor, the resolver SHOULD have some reasonably robust mechanism for obtaining such keys when it boots; examples of such a mechanism would be some form of non-volatile storage ...
... configuration mechanism. Note that trust anchors also cover key material that is updated in a secure manner. This secure manner ...


... DS RR. The process for obtaining and authenticating this initial trust anchor is achieved via some external mechanism. For example, a resolver could use some off-line authenticated ...
... DNSKEY RR. The remainder of this section assumes that the resolver has somehow obtained an initial set of trust anchors. An initial DNSKEY RR ...
... validation within an island of security is in how the validator obtains a trust anchor for the authentication chain. ...
... authenticated DS RR from the parent zone or matches a trust anchor. ...



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