| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a data encryption method whereby the possibility of undesirable interpretation of encrypted digital information data (encrypted information data) transmitted from an encryption processing section side can considerably be precluded because common key data or data equivalent to the common key data are stolen in the case of transmitting the common key data or the data equivalent to the common key data from the encryption processing section side to a decryption processing section side, and to provide a data encryption apparatus used for the execution thereof and the data encryption method. <P>SOLUTION: Applying encryption processing in response to encryption / decryption common key data DEY to an HD-SDI (High Definition Serial Digital Interface) signal DHS forms an encrypted HD-SDI signal DHSE, applying encryption processing using public key data DOY to the encryption / decryption common key data DEY forms encrypted encryption / decryption common key data DXY, and the encrypted HD-SDI signal DHSE and the encrypted encryption / decryption common key data DXY are transmitted. <P>COPYRIGHT: (C)2004,JPO</p> |
