| 摘要 |
A method of making secure the use of a piece of software, the method consisting: in a substage of generating modified data (D'): for a first category of users possessing a generation unit ( 11 <SUB>g</SUB>) including at least one generation secret (S<SUB>g</SUB>) to be able to obtain modified data (D'); and for a second category of users not possessing the generation unit ( 11 <SUB>g</SUB>), to be able at best to generate original data (D) without being able to translate it in order to obtain modified data (D'); and in a substage of reconstituting original data (D): for a first category of users possessing a reconstitution unit including at least a reconstitution secret, to be able to restore the original data (D); and for a second category of users not possessing the reconstitution unit, to be able at best to use the modified data (D'). |
