Giesecke & Devrient Gmbh

Giesecke+devrient Mobile Security Gmbh

Jens Urmann

Gisela Meister

There is provided a method for creating an authentication entity derived from an original data carrier, wherein the original data carrier has a key pair that is individual to the original data carrier and comprises a public key and a secret key of the original data carrier, and a certificate for the public key of the original data carrier. The method comprises the following steps: deriving a secret key for the derived authentication entity from the secret key of the original data carrier by the original data carrier; forming derivation data for the derived authentication entity; transferring authentication data to the derived authentication entity, wherein the authentication data have the derivation data, the certificate of the public key of the original data carrier as well as a derived key pair which comprises the derived secret key and the public key of the original data carrier.

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Heidelberg, Germany

Jens Urmann