Paper-based document logging
First Claim
Patent Images
1. A method comprising:
- scanning bits of a document;
generating a cryptographic hash;
converting the cryptographic hash into a machine readable code; and
rewriting the document with the code contained thereon.
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Abstract
A method and apparatus are disclosed herein for paper-based document logging. In one embodiment, the method comprises scanning bits of a document, generating a cryptographic hash, converting the cryptographic hash into a machine readable code, and rewriting the document with the code contained thereon.
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Citations
24 Claims
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1. A method comprising:
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scanning bits of a document; generating a cryptographic hash; converting the cryptographic hash into a machine readable code; and rewriting the document with the code contained thereon. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An article of manufacture having one or more computer readable media storing instructions thereon which, when executed by a system, cause the system to perform a method comprising:
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scanning bits of a document; generating a cryptographic hash; converting the cryptographic hash into a machine readable code; and rewriting the document with the code contained thereon. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method comprising:
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generating a machine readable code who contents are associated with document content; and creating a paper version of the document with the machine readable code.
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14. A method comprising:
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scanning bits of a document; detecting a machine readable code in scanned bits of the document; gaining access to a document log using contents of the machine readable code as an identifier. - View Dependent Claims (15, 16, 17)
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18. An article of manufacture having one or more computer readable media storing instructions thereon which, when executed by a system, cause the system to perform a method comprising:
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scanning bits of a document; detecting a machine readable code in scanned bits of the document; gaining access to a document log using contents of the machine readable code as an identifier. - View Dependent Claims (19, 20, 21)
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22. A method comprising:
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examining identified locations in a list containing one or more locations in the document at which a machine readable code containing a cryptographic hash; scanning bits of the document if the machine readable code is not found at the one or more locations; comparing the document image corresponding to scanned bits of the document against stored document images in a memory; and obtaining the cryptographic hash associated with a stored document image that matches the document image corresponding to the scanned bits if a match is found. - View Dependent Claims (23, 24)
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Specification