A verification method includes acquiring content data, a plurality of first hash values respectively generated from a plurality of pieces of partial data obtained by dividing the content data, and a signature generated using the plurality of first hash values and a secret key (S301), acquiring state information indicating a state of a vehicle (S302), determining an integer N greater than or equal to 1 depending on the acquired state information (S303), generating second hash values respectively from N pieces of partial data included in the plurality of pieces of partial data (S305), verifying the content data using (a) first hash values which are included in the acquired plurality of first hash values but which are those respectively generated from partial data other than the N pieces of partial data in the plurality of pieces of partial data (b) the generated second hash values, and (c) the acquired signature (S306), and outputting information indicating a result of the verification (S308, S309).
VERIFICATION METHOD, VERIFICATION DEVICE AND PROGRAM
VERIFIZIERUNGSVERFAHREN, VERIFIZIERUNGSVORRICHTUNG UND PROGRAMM
PROCÉDÉ DE VÉRIFICATION, DISPOSITIF DE VÉRIFICATION ET PROGRAMME DE VÉRIFICATION
2021-03-31
Patent
Elektronische Ressource
Englisch
IPC: | H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G09C Ver- oder Entschlüsselungsgeräte für Geheimschrift oder andere Zwecke, bei denen Geheimhaltung erforderlich ist , CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY |
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