System and method for securely duplicating digital documents
First Claim
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1. A system for securely duplicating documents of disparate types, said system comprising:
- storage means for storing at least one original file, each containing no more than one original document, said original file being in a first format;
conversion means for converting said original file from said first format to a canonical format thereby generating a duplicate file containing a duplicate document of said original document;
embedding means for embedding notary data associated with said original file into said duplicate file, said notary data being capable of authenticating said original file; and
indexing means for inserting a unique sequence number including at least a portion of said notary data into said duplicate file to provide a cryptographically secure link between said duplicate document and said original document.
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Abstract
A system and method is provided for securely duplicating digital documents of disparate types, such that there is a cryptographically secure link between the duplicate and the original. The system also provides each document with a serial number that is both sequential with all other copied documents and cryptographically linked with the document itself, and which includes verifiable proof against tampering and modification. The system further produces copies of documents in a canonical format suitable for indexing and searching using automated processing tools.
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Citations
56 Claims
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1. A system for securely duplicating documents of disparate types, said system comprising:
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storage means for storing at least one original file, each containing no more than one original document, said original file being in a first format; conversion means for converting said original file from said first format to a canonical format thereby generating a duplicate file containing a duplicate document of said original document; embedding means for embedding notary data associated with said original file into said duplicate file, said notary data being capable of authenticating said original file; and indexing means for inserting a unique sequence number including at least a portion of said notary data into said duplicate file to provide a cryptographically secure link between said duplicate document and said original document. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A computer system for securely duplicating digital documents of disparate types to provide a cryptographically secure link between duplicate ones of the digital documents and their respective original ones of the digital documents, said computer system comprising:
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a database for storing said original documents in original files, each of said original files containing no more than one of said original documents, each of said original files having a respective original format, said database further for storing said duplicate documents in duplicate files, each of said duplicate files containing one of said duplicate documents, each of said duplicate files having a canonical format; and a processor for executing software routines configured to convert said respective original format of each of said original files to said canonical format associated with said respective duplicate files, embed respective original notary data associated with said original files into said duplicate files and insert a respective unique sequence number into each of said duplicate files to sequentially number said duplicate files, each said unique sequence number including at least a portion of said original notary data associated with said respective duplicate file. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A duplicate file having a canonical format, stored on a computer readable medium comprising:
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a duplicate digital document of an original digital document in an original file having an original format; embedded original notary data associated with said original file; embedded duplicate notary data associated with said duplicate file; and a unique sequence number including at least a portion of said original notary data to provide a cryptographically secure link between said duplicate file and said original file. - View Dependent Claims (39, 40)
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41. A method for securely duplicating digital documents of disparate types, said method comprising the steps of:
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storing at least one original file, each containing no more than one original document, within a computer system, said original file being in an original format; converting said original file from said original format to a canonical format thereby generating a duplicate file containing a duplicate document of said original document; embedding original notary data associated with said original file into said duplicate file, said original notary data being capable of authenticating said original file; and inserting a unique sequence number including at least a portion of said original notary data into said duplicate file to provide a cryptographically secure link between said duplicate document and said original document. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification