FIELD: physics, navigation.
SUBSTANCE: invention relates to radio navigation. The method comprises receiving radio navigation signals broadcast from a plurality of radio navigation signal sources, the radio navigation signals containing a cryptographic token protected by encryption and periodically updated. A receiver retrieves, by decryption, the cryptographic tokens from the radio navigation signals containing said tokens and determines positioning data, representing its geographical position and time, based on the radio navigation signals received. The receiver generates a digital authentication code using a cryptographic function, using as input data at least the positioning data and the retrieved cryptographic tokens.
EFFECT: providing authenticated time and location indication using a radio navigation signal receiver.
15 cl, 4 dwg
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