| 摘要 |
An information processing system includes a signature apparatus and a signature verification apparatus which may be provided separately. The signature apparatus includes a document image generating unit and a print image generating unit. The document image generating unit generates a document image to be signed including document image data and error correction data for character images contained in the document image data. The print image generating unit synthesizes the document image and a code image to generate a print image. The signature verification apparatus includes a restoring unit that restores, from a print image, document image data included in a document image to be signed, using error correction data contained in the document image, and a signature verification unit that performs signature verification using the restored document image data and document image data included in a document image to be signed extracted from the print image. |
