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公开(公告)号:US20060045136A1
公开(公告)日:2006-03-02
申请号:US10926830
申请日:2004-08-26
Applicant: Bradley Rainbolt , Marc Boillot
Inventor: Bradley Rainbolt , Marc Boillot
IPC: H04L1/00
CPC classification number: H04L1/0061 , H04K1/00 , H04L1/0041 , H04L9/12
Abstract: An apparatus (213) and corresponding methods (FIG. 7) to facilitate maintaining crypto synchronization while processing communication signals in a communication unit includes a vocoder (215) configured to convert input audio band signals to vocoder output frames; a crypto processor (217) configured to encrypt the vocoder output frames to provide encrypted output frames; and a synchronizer (219) configured to substitute in a predetermined manner synchronization information corresponding to an encryption state of the crypto processor for a portion of the encrypted data in a portion of the encrypted output frames to provide resultant output synchronization frames suitable for synchronizing a decryption process at a target communication unit.
Abstract translation: 在通信单元处理通信信号的同时,有助于保持加密同步的装置(213)和相应的方法(图7)包括配置成将输入音频信号转换为声码器输出帧的声码器(215) 密码处理器,被配置为加密所述声码器输出帧以提供加密的输出帧; 以及同步器(219),被配置为以预定方式替换与所述加密处理器的加密状态相对应的加密数据的一部分的加密输出帧的一部分的同步信息,以提供适合于同步解密的合成输出同步帧 在目标通信单元处理。