Thales Dis France Sas

Jerome Voyer

Jean-François Gros

Dominique Petyt

The disclosure proposes a method for switching from a first subscription of a first telecommunication network operator to a second subscription of a second telecommunication network operator on a plurality of smart cards, the method comprising, for each smart card pre-provisioning the smart card with a batch of secret keys at the level of a personalization factory; thanks to a first input file transmitted by the first telecommunication network operator to the personalization factory, generating at the personalization factory an output file comprising a first secret key selected in the batch, a corresponding first IMSI and a first ciphered operator code; transmitting the output file to the first telecommunication network operator; and transmitting OTA keys and the first IMSI to an OTA server of a service provider managing the smart card in order to attach the smart card to the first telecommunication network.

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Auriol, France

Jerome Voyer