| 摘要 |
The invention relates to a method for generating a session key (SK) for a secure data exchange between a first electronic entity (H) and a second electronic entity (C), characterised by the following steps: determining (E2), by means of the first electronic entity (H), a first verification word (PRM); transmitting (E4) the first verification word (PRM) from the first electronic entity (H) to the second electronic entity (C); incrementing (E14) a counter (SQC), by means of the second electronic entity (C), only when the first verification word (PRM) is identical to a second verification word (PRM*); generating (E18) a session key (SK), by means of the electronic entity (C), on the basis of the value of the counter (SQC). The invention also provides an electronic entity (C) designed such as to exchange data with another electronic entity (H). |
