Method and apparatus for applying revision specific electronic signatures to an electronically stored document
First Claim
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1. A computer-implemented method for electronically signing an electronically stored document that includes document content, comprising the steps of:
- providing at least a first user and a second user remote access to the electronically stored document;
applying, by one or more processors, a first electronic signature to the electronically stored document to produce an initial signed version of the electronically stored document, wherein the first electronic signature includes information that associates the first electronic signature with the initial signed version of the electronically stored document, the first electronic signature verifies integrity of the document content of the initial signed version of the electronically stored document, and the first electronic signature includes a first cryptographic component;
subsequent to applying the first electronic signature to the electronically stored document, modifying, by the one or more processors, the document content of the initial signed version of the electronically stored document thereby producing a first revision of the electronically stored document;
subsequent to modifying the initial signed version of the electronically stored document, applying, by the one or more processors, a second electronic signature to the first revision of the electronically stored document, wherein the second electronic signature includes information that associates the second electronic signature with the first revision of the electronically stored document, the second electronic signature verifies integrity of the document content the first revision of the electronically stored document, and the second electronic signature includes a second cryptographic component; and
generating a revision history of the electronically stored document, wherein the revision history associates the first electronic signature with the initial signed version of the electronically stored document and associates at least the second electronic signature with the first revision of the first electronically stored document.
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Abstract
Aspects of the present disclosure are directed to methods and systems for applying electronic signatures to an electronically stored document wherein the electronic signatures are associated with a specific revision of that electronically stored document (revision specific electronic signatures).
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Citations
21 Claims
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1. A computer-implemented method for electronically signing an electronically stored document that includes document content, comprising the steps of:
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providing at least a first user and a second user remote access to the electronically stored document; applying, by one or more processors, a first electronic signature to the electronically stored document to produce an initial signed version of the electronically stored document, wherein the first electronic signature includes information that associates the first electronic signature with the initial signed version of the electronically stored document, the first electronic signature verifies integrity of the document content of the initial signed version of the electronically stored document, and the first electronic signature includes a first cryptographic component; subsequent to applying the first electronic signature to the electronically stored document, modifying, by the one or more processors, the document content of the initial signed version of the electronically stored document thereby producing a first revision of the electronically stored document; subsequent to modifying the initial signed version of the electronically stored document, applying, by the one or more processors, a second electronic signature to the first revision of the electronically stored document, wherein the second electronic signature includes information that associates the second electronic signature with the first revision of the electronically stored document, the second electronic signature verifies integrity of the document content the first revision of the electronically stored document, and the second electronic signature includes a second cryptographic component; and generating a revision history of the electronically stored document, wherein the revision history associates the first electronic signature with the initial signed version of the electronically stored document and associates at least the second electronic signature with the first revision of the first electronically stored document. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer-implemented system for electronically signing an electronically stored document that includes document content and is accessible by the system, the system comprising:
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one or more processors; and one or more memory devices for storing program instructions, wherein the program instructions, when executed by the one or more processors, cause the one or more processors to; provide at least a first user and a second user remote access to the electronically stored document; apply a first electronic signature to the electronically stored document to produce an initial signed version of the electronically stored document, wherein the first electronic signature includes information that associates the first electronic signature with the initial signed version of the electronically stored document, the first electronic signature verifies integrity of the document content of the initial signed version of the electronically stored document, and the first electronic signature includes a first cryptographic component; subsequent to application of the first electronic signature to the electronically stored document, modify the document content of the initial signed version of the electronically stored document thereby producing a first revision of the electronically stored document; subsequent to modification of the document content of the initial signed version of the electronically stored document, apply a second electronic signature to the first revision of the electronically stored document, wherein the second electronic signature includes information that associates the second electronic signature with the first revision of the electronically stored document, the second electronic signature verifies integrity of the document content of the first revision of the electronically stored document, and the second electronic signature includes a second cryptographic component; and generate a revision history of the electronically stored document, wherein the revision history associates the first electronic signature with the initial signed version of the electronically stored document and associates at least the second electronic signature with the first revision of the first electronically stored document. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory computer storage medium having computer executable instructions which when executed by a computer cause the computer to perform operations comprising:
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providing at least a first user and a second user remote access to an electronically stored document that includes document content; applying a first electronic signature to the electronically stored document to produce an initial signed version of the electronically stored document, wherein the first electronic signature includes information that associates the first electronic signature with the initial signed version of the electronically stored document, the first electronic signature verifies integrity of the document content of the initial signed version of the electronically stored document, and the first electronic signature includes a first cryptographic component; subsequent to applying the first electronic signature to the electronically stored document, modifying the document content of the initial signed version of the electronically stored document thereby producing a first revision of the electronically stored document; subsequent to modifying the document content of the initial signed document, applying a second electronic signature to the first revision of the electronically stored document, wherein the second electronic signature includes information that associates the second electronic signature with the first revision of the electronically stored document, the second electronic signature verifies integrity of the document content of the first revision of the electronically stored document, and the second electronic signature includes a second cryptographic component; and generating a revision history of the electronically stored document, wherein the revision history associates the first electronic signature with the initial signed version of the electronically stored document and associates at least the second electronic signature with the first revision of the first electronically stored document. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification