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.:
Date of Patent:
Aug. 09, 2011
Filed:
Jun. 16, 2004
Yong-kuk You, Suwon-si, KR;
Myung-sun Kim, Uiwang-si, KR;
Yang-lim Choi, Seongnam-si, KR;
Yong-jin Jang, Uiwang-si, KR;
Yong-kuk You, Suwon-si, KR;
Myung-sun Kim, Uiwang-si, KR;
Yang-lim Choi, Seongnam-si, KR;
Yong-jin Jang, Uiwang-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A method of creating a domain based on public key cryptography includes providing, by a content-providing server, a list of devices requesting content, and selecting, by a user, a device from the list; transmitting, by the server, discrimination information on revoked devices to the device; extracting, by the device having received the discrimination information, a secret value from the discrimination information, preparing a certificate using the extracted secret value, and transmitting device information and the certificate of the device to the server; verifying, by the server, the certificate and creating a domain ID and a domain key using the device information; encrypting, by the server, the domain ID and the domain key using a unique public key of the device and transmitting the encrypted domain ID and domain key to the device; and restoring, by the device, the domain key using a unique secret key of the device.