发明名称 |
METHODS AND APPARATUS FOR ENHANCED CMEA EMPLOYING ENHANCED TRANSFORMATIONS |
摘要 |
<p>Methods and apparatus for enhanced CMEA, or ECMEA, processing. A forward ECMEA and a reverse ECMEA process are provided. The forward ECMEA process decrypts text encrypted by the reverse ECMEA process and the reverse ECMEA process decrypts text encrypted by the forward ECMEA process. The forward ECMEA process employs a transformation, an iteration of the CMEA process, and an inverse transformation. The reverse ECMEA process employs a reverse transformation, an iteration of the CMEA process, and a reverse inverse transformation. The transformations and inverse transformations, and the iteration of the CMEA process, employ secret offsets to improve security. The transformations and the iteration of the CMEA process also employ an enhanced tbox function using an involutary lookup table.</p> |
申请公布号 |
WO9907103(A1) |
申请公布日期 |
1999.02.11 |
申请号 |
WO1998US15883 |
申请日期 |
1998.07.29 |
申请人 |
LUCENT TECHNOLOGICS INC. |
发明人 |
ETZEL, MARK, H.;FRANK, ROBERT, JOHN;HEER, DANIEL, NELSON;MCNELIS, ROBERT, JOSEPH;MIZIKOVSKY, SEMYON, B.;RANCE, ROBERT, JOHN;SHIPP, R., DALE |
分类号 |
G09C1/00;H04L9/06;H04L9/10;H04L9/12;H04L29/06;H04W12/00;H04W12/02;(IPC1-7):H04L9/06 |
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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