发明名称 |
Method and device for encrypting a discrete signal, and method and device for decrypting the same |
摘要 |
In an inventive method for encrypting a discrete signal consisting of successive samples the successive samples are subdivided into successive time blocks, and the successive time blocks are then encoded into encoded data blocks having a predetermined order. Subsequently, the predetermined order of the encoded data blocks is altered in accordance with a predetermined interchange specification. The underlying findings are that a very high level of security of the encryption may be achieved by introducing temporal discontinuity, and that the occurrence of errors in unauthorized processing of signals encoded in such a manner maybe prevented, and the compatibility with standard codings may be ensured by performing the alteration of the chronological order in accordance with a coding of the discrete signal, i.e. with regard to encoded data blocks into which an encoder encodes the discrete signal.
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申请公布号 |
US2004196971(A1) |
申请公布日期 |
2004.10.07 |
申请号 |
US20020486304 |
申请日期 |
2002.08.02 |
申请人 |
DISCH SASCHA;HILPERT JOHANNES;LUTZKY MANFRED;GAYER MARC;BARTHOLOMAEUS REINFRIED |
发明人 |
DISCH SASCHA;HILPERT JOHANNES;LUTZKY MANFRED;GAYER MARC;BARTHOLOMAEUS REINFRIED |
分类号 |
H04K1/06;(IPC1-7):H04K1/06 |
主分类号 |
H04K1/06 |
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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