INFORMATION PROCESSING APPARATUS, VERIFICATION PROCESSING APPARATUS, AND CONTROL METHODS THEREOF
First Claim
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1. An information processing apparatus comprising:
- a first generation unit adapted to generate data to be signed by dividing a digital document into regions;
a second generation unit adapted to generate first digest values of the data to be signed and identifiers used to identify the data to be signed;
a third generation unit adapted to generate signature information based on a plurality of the first digest values and the identifiers obtained from said digital document; and
a fourth generation unit adapted to generate a first signed digital document based on the signature information and the data to be signed.
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Abstract
An information processing apparatus comprising, a first generation unit adapted to generate data to be signed by dividing a digital document into regions, a second generation unit adapted to generate first digest values of the data to be signed and identifiers used to identify the data to be signed, a third generation unit adapted to generate signature information based on a plurality of the first digest values and the identifiers obtained from the digital document, and a fourth generation unit adapted to generate a first signed digital document based on the signature information and the data to be signed.
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Citations
17 Claims
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1. An information processing apparatus comprising:
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a first generation unit adapted to generate data to be signed by dividing a digital document into regions;
a second generation unit adapted to generate first digest values of the data to be signed and identifiers used to identify the data to be signed;
a third generation unit adapted to generate signature information based on a plurality of the first digest values and the identifiers obtained from said digital document; and
a fourth generation unit adapted to generate a first signed digital document based on the signature information and the data to be signed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for controlling an information processing apparatus, comprising:
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a first generation step of generating data to be signed by dividing a digital document into regions;
a second generation step of generating first digest values of the data to be signed and identifiers used to identify the data to be signed;
a third generation step of generating signature information based on a plurality of the first digest values and the identifiers obtained from said digital document; and
a fourth generation step of generating a first signed digital document based on the signature information and the data to be signed. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification