发明名称 |
Data encryption/decryption method, and device |
摘要 |
A method of enciphering data which is applicable to cipher-transmission of digital information data, in which the HD-SDI signal DHS is subjected to enciphering process using common key data DEY which is common to encipherment and decipherment to produce enciphered HD-SDI signal DHSE, the common key data DEY are subjected to enciphering process using open key data DOY to produce enciphered common key data DXY, and the enciphered HD-SDI signal DHSE accompanied with the enciphered common key data DXY are send to be transmitted, so that such a fear that the common key data DEY are eavesdropped on the transmission thereof can be effectively reduced. |
申请公布号 |
US2005069133(A1) |
申请公布日期 |
2005.03.31 |
申请号 |
US20040483361 |
申请日期 |
2004.01.09 |
申请人 |
SHIMOSATO TSUTOMU;ITO YUJIRO |
发明人 |
SHIMOSATO TSUTOMU;ITO YUJIRO |
分类号 |
H04N7/173;H04L9/08;H04N7/167;(IPC1-7):H04K1/00 |
主分类号 |
H04N7/173 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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