DIGITAL WATERMARKING DEVICE, DIGITAL WATERMARK VERIFICATION DEVICE, DIGITAL WATERMARKING METHOD, AND DIGITAL WATERMARK VERIFICATION METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a digital watermarking device capable of verifying forgery only with data to be verified without having original data, a digital watermark verification device, a digital watermarking method, and a digital watermark verification method. PSOLUTION: The digital watermarking device embeds a digital watermark in source data. The digital watermarking device includes a source data acquisition means of acquiring the source data and a plurality of embedding means of embedding genuiness guarantee information regarding the source data in the source data. PCOPYRIGHT: (C)2009,JPO&INPIT