Abstract
For protecting copyright of digital work, a kind of digital work commerce protocol is proposed based on RSA public key system. Digital fingerprint information that embedded in digital work can only be generated by the cooperation of the publisher and the user. The publisher cannot obtain this digital work, but the publisher can judge whether the fingerprint information exists in illegal copied digital work. This protocol can be utilized to trace and accuse the illegal piracy. Meanwhile, it can also protect legal user from framed by publishers. The digital fingerprint identification procedure that dispenses with participation of the third party can effectively avoid forgery in the procedure, which makes the scheme more convenient and safer than the scheme that needs the third party.
Highlights
The convenience of digital work duplication provides an easy way for pirates
Digital watermarking and fingerprint technologies are widely used to protect multi-media digital works without decline of the quality of those works and awareness of the fingerprint
The digital watermarking is mainly used in identifying ownership, while the digital fingerprint is used in buyer identification
Summary
The convenience of digital work duplication provides an easy way for pirates. As a result, digital watermarking and fingerprint technologies are widely used to protect multi-media digital works without decline of the quality of those works and awareness of the fingerprint. The sold products within this protocol contain digital fingerprints that used in tracing products and accusing illegal duplicator, respectively. Step 4: The user utilizes the private key (ke,n)to decrypt X* and gains a digital product with tracing fingerprint.
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