发明名称 Security integrated circuit
摘要 A semiconductor integrated circuit for the processing of conditional access television signals comprises an input interface for receiving encrypted television signals and an output interface for output of decrypted television signals. Control signals broadcast with the television signals include control words and common keys. Entitlement messages are received in encrypted form, encrypted according to a secret key unique to each semiconductor integrated circuit. The input interface is connected to a decryption circuit whereby the only manner of providing the common keys to the circuit are in encrypted form encrypted according to the secret key. Due to the monolithic nature of the circuit, no secrets are exposed and the system is secure. Alternatively, the entitlement messages are encrypted for decryption with the common keys and a unique ID stored in the circuit is compared with an ID in a received entitlement message. Only if the received and stored IDs match can the rights be stored and used.
申请公布号 US2005135616(A1) 申请公布日期 2005.06.23
申请号 US20040818753 申请日期 2004.04.06
申请人 STMICROELECTRONICS LIMITED 发明人 DELLOW ANDREW;CORDERO RODGRIGO
分类号 G06F21/00;G06F21/10;H04K1/04;H04N5/00;H04N7/16;(IPC1-7):H04K1/04 主分类号 G06F21/00
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