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    • 2. 发明公开
    • 세션키를 수립하기 위한 방법 및 그 방법을 수행하기 위한유닛들
    • 建立会议密钥的方法和实现方法的单位
    • KR1020080041279A
    • 2008-05-09
    • KR1020087007332
    • 2006-08-25
    • 비악세스
    • 비가리에,장-피에르페브리에피에르보도,프랑크
    • H04L9/14H04L9/00
    • H04N7/163H04L9/0844H04N7/1675H04N21/26606H04N21/4623
    • The invention relates to a method of establishing a session key (KS) between a unit for descrambling scrambled multimedia signals and a removable cryptographic unit. According to the invention, one of the units sends (166, 184) the other unit a message containing a received random number, a term (a) and a signature for the random number and/or the term (a), which is produced with a private key (K3pr) and, subsequently, the other unit checks (168, 192) the signature using a public key (K3pu) corresponding to the private key (K3pr) and compares (174, 198) the received random number with that sent. If the signature is incorrect or if the received random number does not correspond to that sent, the subsequent steps for establishing the session key are not performed.
    • 本发明涉及一种在加扰多媒体信号解扰的单元与可移动密码单元之间建立会话密钥(KS)的方法。 根据本发明,其中一个单元发送另一个单元(166,184),该消息包含随机数和/或项(a)的接收的随机数,项(a)和签名,其被产生 使用私钥(K3pr),然后使用与私钥(K3pr)相对应的公开密钥(K3pu),使用对应于私钥(K3pr)的公开密钥(K3pu)来另一个单元检查(168,192),并将接收到的随机数与 发送。 如果签名不正确或接收到的随机数不对应于发送的随机数,则不执行用于建立会话密钥的后续步骤。