| 摘要 |
The invention relates to a method Method for accessing a service (S) of a service provider (SP 3) by providing anonynimously an attribute or a set of attributes of a user determined and stored in an attribute provider (AP 2), comprising a step of processing pairs of public and private keys (K S , K P ) of said user in a secure element (SE 1), each public key being used used once and for one set of attributes only for characterised in that it comprises
- receiving (S5) by the service provider from the secure element a certificate (C AP K P ) delivered by the attribute provider, and a list (LA[ Y 0 ]) of attribute values (A y ) associated to random values (Random y ) in response to a list of attribute requests (L[ y 0 ]);
- determining (S6) by the service provider, digest codes (Di y ) associated to said list (LA[ Y 0 ]) of attribute values (A y ) and corresponding random values (Random y ) , wherein Di y =SHA-2 (Random y , A y ) ,
- extracting data (CAL) from said certificate (C AP K P ),
- accessing to said service (S) if said determined digest codes (Di y ) are included into said extracted data (CAL).
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