| 摘要 |
The present invention discloses a method and system for embedding a digital signature into an MPEG stream. In the preferred embodiment, the digital signature is embedded in a plurality of PCR fields of a transport stream and is encrypted and scrambled to avoid detection and removal. Other embodiments are disclosed, each of which is designed to place a digital signature in a pre-compressed MPEG stream while requiring minimal computing resources to encode and decode the signature.
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