Process for the dissimulaton of a secret code in a data authentication device
US5894519A · kind A · utility
11Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1997 |
| Grant date | Apr 13, 1999 |
| Priority date | — |
| Expiry date | Apr 9, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2107
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A process for the dissimulation of concealment of a secret code in a data authentication device by encrypting the secret code by an encrypting function for forming an image of the secret code and storing the secret code image in the authentication device. Beforehand, an encrypting function is chosen such that with each stored secret code image corresponds a plurality of antecedent codes all differing from the secret code, but which, once encrypted by the encrypting function have an image identical to that of the secret code. The secret code of a user has an authentication device in which is stored the secret code image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.