| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To dispense with authentication between a secure device and digital content decoding software in an information processor (a personal computer, for example) having a digital content receipt function to prevent cracking of the digital content decoding software and a common key due to authentication behavior of the digital content decoding software for improving protection for digital contents. <P>SOLUTION: Secure hardware 29 sets the common key used for encryption of the digital content, which is outputted by an OFDM demodulator 28 or read from a hard disk 25 to be decoded, in a key area 36 of secure software 35. The secure software 35 makes a computer operate a decoding process, which is carried out by using the common key set in the key area 36, of the digital content encrypted by the secure hardware 29. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
