Invention Grant
US08180708B2 Watermarking system that executes received watermarking instructions to embed a watermark 有权
执行接收水印指令以嵌入水印的水印系统

Watermarking system that executes received watermarking instructions to embed a watermark
Abstract:
A method of managing keys is provided. According to one exemplary method, digital content data encrypted with a first encrypting key is decrypted using a first decrypting key, and re-encrypted using a second encrypting key. A second decrypting key is encrypted using a third encrypting key to produce an encrypted second decrypting key. In some embodiments, an encrypted first decrypting key that was encrypted using a fourth encrypting key is received, and the encrypted first decrypting key is decrypted using a fourth decrypting key to reproduce the first decrypting key. An application for use on a computer system is also provided.
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