公开(公告)号：WO2016145558A1

公开(公告)日：2016-09-22

申请号：PCT/CN2015/074165

申请日：2015-03-13

申请人： LATTICE SEMICONDUCTOR CORPORATION

发明人： WANG, Qingang ,  WANG, Hongpeng ,  CHOI, Hoon

IPC分类号： H04N7/16

CPC分类号： H04N21/4302 ,  G09G5/00 ,  H04N21/4353 ,  H04N21/43635 ,  H04N21/4367

摘要： Maintaining synchronization of encryption processes at devices during transmission of encrypted data over a communication link is provided. Cipher link maintenance characters are sent from a source device to a sink device. A local cipher link maintenance character generated at the sink device for decrypting the encrypted data can be adjusted according to the cipher link maintenance character. After authentication, cipher link maintenance characters corresponding to units (e.g., frames) of the encrypted data are sent along with the units of the encrypted data. When a transmission error occurs during transmission of the encrypted data, cipher link maintenance characters can be used to correct the error in a local cipher link maintenance character generated at the sink device. Hence, even if the transmission error occurs in the communication link, the sink device can resolve the transmission error and maintain the synchronization of encryption processes at the source and sink devices.

摘要翻译： 提供了通过通信链路在加密数据传输期间保持设备上的加密处理的同步。 密码链路维护字符从源设备发送到宿设备。 可以根据加密链路维护字符来调整在宿设备处生成的用于解密加密数据的本地密码链路维护字符。 在认证之后，与加密数据的单元一起发送对应于加密数据的单元（例如，帧）的加密链路维护字符。 当发送加密数据时发生传输错误时，可以使用密码链路维护字符来纠正在宿设备产生的本地密码链路维护字符中的错误。 因此，即使在通信链路中发生传输错误，宿设备也可以解决传输错误并保持源设备和宿设备上的加密过程的同步。