发明名称 |
Encryption apparatus, cryptographic communication system, key recovery system, and storage medium |
摘要 |
In an encryption apparatus for encrypting a data body to contain an encrypted data body in transmission data and transmitting the transmission data to a receiver, the transmission data includes sender's key recovery data obtained by encrypting recovery information for recovering a key for decrypting the encrypted data body to allow a key recovery agent registered by a sender to decrypt the recovery information, and receiver's key recovery data obtained by encrypting the recovery information for recovering the key for decrypting the encrypted data body to allow a key recovery agent registered by a receiver to decrypt the recovery information.
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申请公布号 |
US6842523(B1) |
申请公布日期 |
2005.01.11 |
申请号 |
US19990448470 |
申请日期 |
1999.11.24 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
NIWA AKITO;KAWAMURA SHINICHI;AOKI MEGUMI;SAISHO TOSHIAKI;ISHIHARA TATSUYA;SANO FUMIHIKO;HORI SATOMI |
分类号 |
G09C1/00;H04L9/08;H04L9/32;(IPC1-7):H04L9/00 |
主分类号 |
G09C1/00 |
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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