发明申请
- 专利标题: AUTHENTICATION METHOD, NOTIFICATION METHOD, SOURCE DEVICE, AND SINK DEVICE
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申请号: US15644862申请日: 2017-07-10
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公开(公告)号: US20170317835A1公开(公告)日: 2017-11-02
- 发明人: TOSHIROH NISHIO , MASAYA YAMAMOTO , MASAYUKI KOZUKA , YOSHIHIRO MORI , TADAMASA TOMA
- 申请人: Panasonic Intellectual Property Corporation of America
- 优先权: JP2016-109584 20160531
- 主分类号: H04L9/32
- IPC分类号: H04L9/32 ; H04L9/30 ; H04L9/14 ; G06F7/58
摘要:
A method for use in a source device includes: acquiring a random number; transmitting the random number to a sink device through a High Definition Multimedia Interface-Consumer Electronics Control (HDMI-CEC) bus; receiving first signature information and capability information from the sink device through the HDMI-CEC bus, the first signature information being information in which the random number is encrypted with a first secret key of the sink device, the capability information being information about a display capability of the sink device; acquiring a result of a first determination whether first decrypted information is compatible with the transmitted random number, the first decrypted information being obtained by decrypting the first signature information with a first public key paired with the first secret key; determining that the received capability information is correct information when the result of the first determination is that the first decrypted information is compatible with the transmitted random number; and outputting video corresponding to the capability information to sink device.