发明名称 |
Encryption/decryption method for data limited in value range, apparatus and program therefor |
摘要 |
On an encrypted object code obtained by encrypting an object code, there is discriminated whether an inhibited code defined in data format is present in a code concerning such encrypted object code, and, in case such inhibited code is judged absent, the encrypted object code is determined as an encryption result of the object code. <IMAGE>
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申请公布号 |
EP1439660(A2) |
申请公布日期 |
2004.07.21 |
申请号 |
EP20040250117 |
申请日期 |
2004.01.12 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
IWAMURA, KEIICHI;SUGA, YUJI |
分类号 |
H04L9/06;H04L9/36;(IPC1-7):H04L9/00 |
主分类号 |
H04L9/06 |
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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