公开(公告)号：US20170033933A1

公开(公告)日：2017-02-02

申请号：US15302980

申请日：2014-04-08

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Stuart Haber ,  William G. HORNE ,  Miaomiao ZHANG

IPC: H04L9/32 ,  G06F17/30

CPC classification number: H04L9/3247 ,  G06F17/30011 ,  G06F21/64 ,  G06F2221/2123 ,  H04L9/3242

Abstract: In one implementation, a redactable document signature system includes an encoding engine, a reordering engine, and a signature engine. The encoding engine is to access a plurality of subdocuments of a document, to generate a plurality of commitment values from the plurality of subdocuments, and to generate a plurality of dummy values. Each dummy value is indistinguishable from a commitment value. The reordering engine is to define an order of the plurality of commitment values and the plurality of dummy values independent of an order of the subdocuments. The signature engine is to calculate a signature value for the document using the plurality of commitment values and the plurality of dummy values according to the order.

Abstract translation: 在一个实现中，可修改的文档签名系统包括编码引擎，重新排序引擎和签名引擎。 编码引擎是访问文档的多个子文档，以从多个子文档生成多个承诺值，并生成多个虚拟值。 每个虚拟值与承诺值无法区分。 重新排序引擎是定义独立于子文档顺序的多个承诺值和多个虚拟值的顺序。 签名引擎是根据顺序使用多个承诺值和多个虚拟值来计算文档的签名值。