发明名称 Digital watermark key generation
摘要 The present invention relates to message encoding. In a first implementation, a message is provided. The message is transformed by a secret key. The secret key is generated by providing a plural-bit seed. The seed is randomized and then error correction encoded. We prefer tail-biting convolutional encoding for our error correction encoding. The encoded seed forms a secure key, which is used to transform the message prior to embedding.
申请公布号 US2006013395(A1) 申请公布日期 2006.01.19
申请号 US20050140540 申请日期 2005.05.26
申请人 BRUNDAGE TRENT J;BRUNK HUGH L 发明人 BRUNDAGE TRENT J.;BRUNK HUGH L.
分类号 H04K1/00 主分类号 H04K1/00
代理机构 代理人
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