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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9544278 B1

PDFFull Text
Date of Patent:
Jan. 10, 2017

Filed:

Jan. 07, 2015

Using domain name system security extensions in a mixed-mode environment

Applicant:

Red Hat, Inc., Raleigh, NC (US);

Inventors:

Tomas Hozza, Lubica, SK;

Petr Spacek, Brno, CZ;

Miloslav Trmac, Brno, CZ;

Prasad J. Pandit, Pune, IN;

Pavel Simerda, Prague, SK;

Florian Weimer, Stuttgart, DE;

Assignee:

Red Hat, Inc., Raleigh, NC (US);

Attorney:

Lowenstein Sandler LLP

Primary Examiner:

Roderick Tolentino

Int. Cl.
CPC ...
G06F 7/04 (2006.01); H04L 29/06 (2006.01); H04L 29/12 (2006.01);
U.S. Cl.
CPC ...
H04L 63/0442 (2013.01); H04L 61/1511 (2013.01); H04L 63/00 (2013.01); H04L 61/303 (2013.01);
Abstract

A method relates to generating, by a processing device executing a DNS resolver, a first domain name system (DNS) query comprising a DNS request generated from an application executing on the processing device to query a first DNS server serving a first DNS zone connected to the processing device via a public network, receiving, from the first DNS server, a first resource record comprising a DNS answer to the DNS query, a second resource record comprising a digital signature generated by signing the DNS answer with a first private key of the first DNS zone, a third resource record comprising a first public key for verifying the digital signature, and one or more files for validating a chain of trust of the first public key, determining, by the processing device in view of the one or more files, that the chain of trust of the first public key misses at least one of a trust anchor or a link in the chain of trust, and generating a second DNS query comprising the DNS request to query a second DNS server residing in a private network of the processing device.

Find Patent Forward Citations

Hozza, Tomas. (2017). Using domain name system security extensions in a mixed-mode environment (U.S. Patent No. 9544278). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9544278

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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