发明名称 |
Encryption system for digital data, uses secondary key to mask primary key, is more difficult to decrypt by Brute Force Attack than data encrypted with conventional single key |
摘要 |
The unencrypted data (X) is fed to a cryptographic processor (P) where is encrypted by a primary key (K) to produce the encrypted output (Y). The processor is of the 'Data Encryption Standard type. In the present system, the primary key (K) is produced by another processor (Pasterisk) which is itself fed with a secondary key (Kasterisk) and an ancillary key (K').
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申请公布号 |
NL1010921(C2) |
申请公布日期 |
2000.07.03 |
申请号 |
NL19981010921 |
申请日期 |
1998.12.30 |
申请人 |
KONINKLIJKE KPN N.V. |
发明人 |
GERRIT ROELOFSEN;DIRK JAN JACOBUS VAN BRUCHEM;FRANK MULLER;WILLEM ROMBOUT |
分类号 |
H04L9/06;(IPC1-7):H04L9/06;H04L9/14;G07F7/08 |
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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