Electronic autograph on document

A document, electronic pen technology, applied in computer parts, electronic digital data processing, input/output process of data processing, etc., can solve the problem of vulnerable to intra-network attacks, unclear end users, unprotected signatures and their file integrity And other issues

Inactive Publication Date: 2003-02-19
TRUSTCOPY PTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] All known prior art techniques are vulnerable to "record and replay" attacks because none of them protect the integrity of the signature with its file at the ...

Method used

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  • Electronic autograph on document
  • Electronic autograph on document
  • Electronic autograph on document

Examples

Experimental program
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Embodiment Construction

[0040] The signed document of the present invention has the following structure:

[0041] ·document content;

[0042] · Personal signature data;

[0043] · Authentication ID, which can include the following items and can be encrypted:

[0044] ° autograph and / or its essential characteristics and / or its abstract;

[0045] ° file content summary (or hash, signature, or required item);

[0046] °time label; and

[0047] · Watermarks, including optical watermarks, with inlaid autographs and necessary items of document content.

[0048] The main steps in the signing process are:

[0049] certify the signatory by a personal signature as defined at the beginning of this specification;

[0050] · Collect autographs and generate verification IDs for signed documents; and

[0051] • Generate a watermark.

[0052] As shown in FIG. 1 , in one form of the invention, an electronic pen 10 , a secure processor 12 , a secure memory 14 , a computer 16 and a user 18 are included. These ...

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PUM

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Abstract

An electronic signature of document by electronic pen is disclosed. Its method includes collecting personal signature, authenticating, generating ID, and attaching the personal signature, ID and optical watermark to the document. A method for validating signature on document includes signing with electronic pen, generating abstract of document, encrypting by electronic pen, generating ID, and integrating ID, abstract and document.

Description

technical field [0001] The present invention relates to a method and system for document electronic signature, in particular but not limited to a method and system for protecting the integrity and originality of signed documents. [0002] definition [0003] The method and system can use autographs, as well as other "capturable" signatures, such as digital credentials, voice, seals, fingerprints, facial features, eye masks, and the like. For example, a smart card can be used to store a seal image and use it to sign documents. This seal is protected from exposure by utilizing an optical watermark. Another example is signing documents using the voice of the signer. This voice can be recorded as a "signature" using digital recording technology. "Autographed signature" throughout this specification is considered to include all such collectible signatures. [0004] Therefore, signature devices can be extended from electronic pens to other sensing device...

Claims

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Application Information

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IPC IPC(8): G06F3/0354G06K9/22G06K9/62H04L9/32
Inventor 吴健康郑雷
Owner TRUSTCOPY PTE
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