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    • 87. 发明授权
    • Secure signing method, secure authentication method and IPTV system
    • 安全签名方式,安全认证方式和IPTV系统
    • US08924731B2
    • 2014-12-30
    • US12677552
    • 2008-09-11
    • Il Gon ParkSung Hyun ChoMin Gyu ChungKumar K. KiranMan Soo JeongKoo Yong Pak
    • Il Gon ParkSung Hyun ChoMin Gyu ChungKumar K. KiranMan Soo JeongKoo Yong Pak
    • H04L29/06H04N21/2389H04N21/254H04N7/16H04N21/4623H04N21/61H04N21/8358
    • H04N21/8358H04N7/162H04N21/23892H04N21/2541H04N21/4623H04N21/6125H04N21/6175
    • A secure signing method, a secure authentication method, and an IPTV system are disclosed. The secure signing method includes preparing digital signature header fields and setting an attribute, calculating a hash digest of content using a hashing algorithm, storing the calculated hash value in a message digest field of the digital signature header, encrypting the message digest using a secret key and inserting the encrypted message digest in a signature field of the digital signature header, and associating the digital signature header with the content by prefixing the digital signature header to the content. The secure authentication method includes checking whether a format and value of a digital signature header of content are appropriate, calculating a hash digest of the content using a hashing algorithm, comparing the calculated hash value with a message digest field of the digital signature header, decrypting the hash value of the signature field of the digital signature header using a public key extracted from a certificate field, and comparing the decrypted hash value with the message digest.
    • 公开了安全签名方法,安全认证方法和IPTV系统。 安全签名方法包括准备数字签名头字段并设置属性,使用散列算法计算内容的散列摘要,将计算的散列值存储在数字签名头的消息摘要字段中,使用密钥对消息摘要进行加密 以及将加密的消息摘要插入数字签名头部的签名字段中,并且通过将数字签名头部前缀到内容来将数字签名头部与内容相关联。 安全认证方法包括:检查内容的数字签名标题的格式和值是否合适,使用散列算法计算内容的哈希摘要,将计算的哈希值与数字签名头的消息摘要字段进行比较,解密 使用从证书字段提取的公钥的数字签名头的签名字段的哈希值,并将解密的哈希值与消息摘要进行比较。