Electronic signature method

摘要: The invention concerns a method whereby telephony operator acts as recording authority and certification for secure transactions between subscriber provider. communications the (101) (113) are signed with symmetrical algorithm (108c, 117C). provider countersigned in accordance PKI technologies (117E, 124A), an asymmetric algorithm. Two configurations possible, either signs his own dual-key, after validation, content of each subscriber/provider transactions, or implements non-repudiable signature transfer, its network, to remote terminal (in secret key technology). This enables reduce resources required subscriber's terminal. also have better visibility on operations which carried out guarantee validity transactions.