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:
Jan. 07, 2014
Filed:
Oct. 12, 2007
Maeng Hee Sung, Seoul, KR;
Weon IL Jin, Suwon-si, KR;
Heejean Kim, Yongin-si, KR;
Baeeun Jung, Seongnam-si, KR;
Tae-chul Jung, Seongnam-si, KR;
Jong Hwan Park, Seoul, KR;
Dong Hoon Lee, Seoul, KR;
Jong IN Lim, Seoul, KR;
Kyu Young Ohoi, Seoul, KR;
Jung Yeon Hwang, Seoul, KR;
Maeng Hee Sung, Seoul, KR;
Weon Il Jin, Suwon-si, KR;
Heejean Kim, Yongin-si, KR;
Baeeun Jung, Seongnam-si, KR;
Tae-Chul Jung, Seongnam-si, KR;
Jong Hwan Park, Seoul, KR;
Dong Hoon Lee, Seoul, KR;
Jong In Lim, Seoul, KR;
Kyu Young Ohoi, Seoul, KR;
Jung Yeon Hwang, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
A broadcast encryption method and a broadcast decryption method. The broadcast encryption method includes generating a message encryption key using a public key and a secret key generated by using a Strong Diffie-Hellman tuple; encrypting a message by the message encryption key; and generating a message header using a sum of a plurality of Strong Diffie-Hellman tuples corresponding to an authorized user group. Accordingly, a transmission amount and a storage amount can be reduced when a broadcast encryption message is transmitted.