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热词
    • 2. 发明授权
    • Information processing apparatus and information processing method
    • 信息处理装置和信息处理方法
    • US07757087B2
    • 2010-07-13
    • US11085531
    • 2005-03-22
    • Hiroshi IsozakiTaku KatoTakashi Kokubo
    • Hiroshi IsozakiTaku KatoTakashi Kokubo
    • H04L9/32H04N7/167H04L9/00
    • H04L63/061G06F21/10H04L9/0844H04L9/0891H04L63/068H04L2209/60H04L2463/061H04L2463/101
    • An information processing apparatus has an authentication & key exchange unit, a contents receiver, a contents decryption unit and a contents confirmation request unit. The authentication & key exchange unit performs authentication & key exchange processing by using a given protocol with the communication apparatus and generates a first key shared with the communication apparatus. The contents receiver receives encrypted contents obtained by encrypting the contents with a second key generated by using the first key and the key information, and the key information attached to the encrypted contents. The contents decryption unit decrypts the encrypted contents by using the first key and the key information. The contents confirmation request unit instructs the communication apparatus to transmit or confirm the key information held by the communication apparatus, when the contents decryption unit decrypts the contents based on the second key firstly generated by using the first key.
    • 信息处理装置具有认证和密钥交换单元,内容接收器,内容解密单元和内容确认请求单元。 认证和密钥交换单元通过使用与通信装置的给定协议进行认证和密钥交换处理,并生成与通信装置共享的第一密钥。 内容接收器接收通过使用第一密钥和密钥信息生成的第二密钥和附加到加密内容的密钥信息对内容进行加密而获得的加密内容。 内容解密单元通过使用第一密钥和密钥信息对加密内容进行解密。 当内容解密单元基于通过使用第一密钥首先生成的第二密钥来解密内容时,内容确认请求单元指示通信装置发送或确认通信装置保存的密钥信息。
    • 4. 发明申请
    • Information processing apparatus and information processing method
    • 信息处理装置和信息处理方法
    • US20060085644A1
    • 2006-04-20
    • US11085531
    • 2005-03-22
    • Hiroshi IsozakiTaku KatoTakashi Kokubo
    • Hiroshi IsozakiTaku KatoTakashi Kokubo
    • H04L9/00
    • H04L63/061G06F21/10H04L9/0844H04L9/0891H04L63/068H04L2209/60H04L2463/061H04L2463/101
    • An information processing apparatus has an authentication & key exchange unit, a contents receiver, a contents decryption unit and a contents confirmation request unit. The authentication & key exchange unit performs authentication & key exchange processing by using a given protocol with the communication apparatus and generates a first key shared with the communication apparatus. The contents receiver receives encrypted contents obtained by encrypting the contents with a second key generated by using the first key and the key information, and the key information attached to the encrypted contents. The contents decryption unit decrypts the encrypted contents by using the first key and the key information. The contents confirmation request unit instructs the communication apparatus to transmit or confirm the key information held by the communication apparatus, when the contents decryption unit decrypts the contents based on the second key firstly generated by using the first key.
    • 信息处理装置具有认证和密钥交换单元,内容接收器,内容解密单元和内容确认请求单元。 认证和密钥交换单元通过使用与通信装置的给定协议进行认证和密钥交换处理,并生成与通信装置共享的第一密钥。 内容接收器接收通过使用第一密钥和密钥信息生成的第二密钥和附加到加密内容的密钥信息对内容进行加密而获得的加密内容。 内容解密单元通过使用第一密钥和密钥信息对加密内容进行解密。 当内容解密单元基于通过使用第一密钥首先生成的第二密钥来解密内容时,内容确认请求单元指示通信装置发送或确认通信装置保存的密钥信息。