| 摘要 |
A tracing method performed by a traceability device for validating a process having a purity of steps. During at least one step of the process, there is a step of receiving a marking message sent by a marking device; and a step of determining a new fingerprint as a function of the marking message and of a preceding fingerprint, by using a hash function; and a step of sending a validation message including the most recently determined new fingerprint to a validation device. During at least one step of the process, there is a step of determining an object signature as a function of the marking message by using an asymmetric signature function and a private key of the traceability device associated with a public key of the traceability device, and a step of determining a new fingerprint as a function of the object signature.
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