Information processing apparatus, information processing method, information processing system and recording medium
    7.
    发明授权
    Information processing apparatus, information processing method, information processing system and recording medium 失效
    信息处理装置,信息处理方法,信息处理系统和记录介质

    公开(公告)号:US06697945B2

    公开(公告)日:2004-02-24

    申请号:US09059812

    申请日:1998-04-14

    IPC分类号: H04L900

    摘要: An information processing apparatus and an information processing method are capable of preventing information from being copied illegally. To put it in detail, a hash function and a service key are stored in advance in an EEPROM of a DVD player serving as a source. In an EEPROM of a personal computer (PC) serving as a sink, on the other hand, its ID and a license key are stored beforehand. The DVD player requests the PC to transmit the ID. The DVD player then applies the hash function to data resulting from concatenation of the ID with the service key to generate a license key (=hash (ID ∥ service-key)). Subsequently, the DVD player generates a source side common session key and encrypts the session key by using the generated license key. Then, the DVD player transmits the encrypted source side common session key to the PC. The PC decrypts the encrypted source side common session key by using the license key stored in its EEPROM to produce a sink side common session key which has a value equal to that of the source side common session key.

    摘要翻译: 信息处理装置和信息处理方法能够防止信息被非法复制。为了详细地将哈希函数和服务密钥预先存储在作为源的DVD播放器的EEPROM中。 另一方面,在用作信宿的个人计算机(PC)的EEPROM中,事先存储其ID和许可证密钥。 DVD播放器请求PC传送ID。 然后,DVD播放器将散列函数应用于由ID与服务密钥连接产生的数据,以产生许可密钥(= hash(ID∥service-key))。 随后,DVD播放器生成源侧公共对话密钥,并通过使用所生成的许可证密钥来加密会话密钥。 然后,DVD播放器将加密的源侧公共会话密钥发送到PC。 PC通过使用存储在其EEPROM中的许可证密钥来解密加密的源侧公共会话密钥,以产生具有等于源侧公共会话密钥的值的宿侧公共会话密钥。