发明名称 |
BROADCAST ENCRYPTION METHOD AND BROADCAST DECRYPTION METHOD THEREOF |
摘要 |
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.
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申请公布号 |
US2008152132(A1) |
申请公布日期 |
2008.06.26 |
申请号 |
US20070871181 |
申请日期 |
2007.10.12 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD.;KOREA UNIVERSITY INDUSTRIAL & ACADEMIC COLLABORATION FOUNDATION |
发明人 |
SUNG MAENG HEE;JIN WEON IL;KIM HEEJEAN;JUNG BAEEUN;JUNG TAE-CHUL;PARK JONG HWAN;LEE DONG HOON;LIM JONG IN;OHOI KYU YOUNG;HWANG JUNG YEON |
分类号 |
H04L9/28 |
主分类号 |
H04L9/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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