会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明申请
    • Encryption communication system
    • 加密通信系统
    • US20060171530A1
    • 2006-08-03
    • US10559725
    • 2004-06-14
    • Yuichi FutaMasato YamamichiMasami YamamichiSatomi YamamichiKeiko YamamichiMotoji OhmoriMakoto Tatebayashi
    • Yuichi FutaMasato YamamichiMasami YamamichiSatomi YamamichiKeiko YamamichiMotoji OhmoriMakoto Tatebayashi
    • H04L9/28
    • H04L9/3236H04L9/3093H04L2209/60
    • An encroption transmission apparatus and an encryption reception apparatus avoid attack that takes advantage of re-transmission request. A server apparatus encrypts a content key five times, thereby generating five encrypted content keys, calculates a hash value of the content key, and transmits the five encrypted content keys and the hash value. An image playback apparatus receives the five encrypted content keys and the has value, decrypts the five encrypted content keys thereby generating five content keys, calculates hash values each corresponding to the generated content keys, and compares the calculated hash values with the received hash value respectively. If at least one of the five calculated hash values matches the received hash value, the corresponding content key is considered correct. Conversely, if none of the five calculated hash values matches the received hash value, it is considered a decryption error.
    • 侵扰传输装置和加密接收装置避免利用重传请求的攻击。 服务器装置对内容密钥进行五次加密,从而生成五个加密的内容密钥,计算内容密钥的哈希值,并发送五个加密内容密钥和哈希值。 图像重放装置接收五个加密的内容密钥并具有值,对五个加密的内容密钥进行解密从而生成五个内容密钥,计算与生成的内容密钥相对应的哈希值,分别将计算的哈希值与接收到的散列值进行比较 。 如果五个计算的散列值中的至少一个与接收的散列值匹配,则相应的内容密钥被认为是正确的。 相反,如果五个计算的散列值中没有一个与接收的散列值匹配,则认为它是解密错误。