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    • 99. 发明申请
    • SYSTEMS AND METHODS FOR AUTHENTICATING AND PROTECTING THE INTEGRITY OF DATA STREAMS AND OTHER DATA
    • 用于认证和保护数据流和其他数据的完整性的系统和方法
    • US20160292458A1
    • 2016-10-06
    • US15188737
    • 2016-06-21
    • Intertrust Technologies Corporation
    • Xavier Serret-Avila
    • G06F21/64H04L9/32G06F21/53
    • G06F21/64G06F21/53G06F2221/2149H04L9/3236H04L63/0428H04L2209/30H04L2209/38H04L2209/603
    • Systems and methods are disclosed for enabling a recipient of a cryptographically-signed electronic communication to verify the authenticity of the communication on-the-fly using a signed chain of check values, the chain being constructed from the original content of the communication, and each check value in the chain being at least partially dependent on the signed root of the chain and a portion of the communication. Fault tolerance can be provided by including error-check values in the communication that enable a decoding device to maintain the chain's security in the face of communication errors. In one embodiment, systems and methods are provided for enabling secure quasi-random access to a content file by constructing a hierarchy of hash values from the file, the hierarchy deriving its security in a manner similar to that used by the above-described chain. The hierarchy culminates with a signed hash that can be used to verify the integrity of other hash values in the hierarchy, and these other hash values can, in turn, be used to efficiently verify the authenticity of arbitrary portions of the content file.
    • 公开了系统和方法,用于使密码签名的电子通信的接收者能够使用签署的检查值链来验证通信的真实性,该链由正在通信的原始内容构成,并且每个 检查链中的值至少部分地取决于链的签名根和通信的一部分。 可以通过在通信中包括错误检查值来提供容错,使得解码设备能够在面对通信错误时保持链的安全性。 在一个实施例中,提供了系统和方法,用于通过从文件中构建散列值的层级来实现对内容文件的安全准随机访问,层级以与上述链类似的方式导出其安全性。 层次结构最终得到一个可用于验证层次结构中其他哈希值的完整性的签名散列,而这些哈希值又可用于有效地验证内容文件的任意部分的真实性。