发明名称 |
Deterring information copying including deterrence of currency counterfeiting |
摘要 |
A method for deterring information copying, includes: combining a watermark serial number incorporate in a given medium with a content serial number to create a combined serial number, the watermark serial number uniquely identifies the given medium, and the content serial number uniquely identifies a content stored on the given medium; creating a digital signature by encoding the combined serial number using a private key of a public/private key pair; imprinting the content serial number and the digital signature on the given medium; decoding the digital signature imprinted on the given medium using a public key of the public/private key pair to obtain the combined serial number; comparing the decoded combined serial number with the watermark serial number and the content serial number imprinted of the given medium; and in response to determining that both match the combined serial number, determining that the content is authentic.
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申请公布号 |
US8585094(B2) |
申请公布日期 |
2013.11.19 |
申请号 |
US201213542577 |
申请日期 |
2012.07.05 |
申请人 |
APPAVU RAJENDRAN;KULKARNI PRASHANT N;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
APPAVU RAJENDRAN;KULKARNI PRASHANT N |
分类号 |
B42D15/00;B42D15/10;G09C3/00 |
主分类号 |
B42D15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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