Device for generating a message authentication code for authenticating a message
US9497021B2 · kind B2 · utility
4Cited by
18References
16Claims
0Family size
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Key dates
| Filing date | Aug 27, 2010 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | May 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Device for generating a message authentication code for authenticating a message, wherein the message is divided in blocks (M) with a specified block length, the device comprising a generating unit for generating the message authentication code based on a message by using a block cipher algorithm, and an encrypting unit for performing an exclusive disjunction on the last block with a first key (K1, K2) and for performing an exclusive disjunction on the first and/or the last block additionally with a second key (K3, K4) for generating the message authentication code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.