The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2022
Filed:
Dec. 20, 2019
Airbus Ds Slc, Elancourt, FR;
Marc Mouffron, Saint Rémy les Chevreuse, FR;
Nathalie Renault, Montigny le Bretonneux, FR;
AIRBUS DS SLC, Elancourt, FR;
Abstract
A method for verification of integrity and decryption of an encrypted message including ordered data blocks, the method performed by a cryptomodule and including storing or activating an integrity key; calculating an initial integrity code; generating a verification key and storing it; for each data block: storing the data block; updating an intermediate integrity code with the integrity key, the data block and the initial integrity code or the intermediate integrity code of the preceding data block; generating an authentication code using the verification key; deleting the data block; analysing the final integrity code; if the integrity is verified: storing or activating a decryption key specific to the encrypted message; for each data block: storing the data block; verifying the authenticity and the row of the data block using its authentication code; decrypting the data block with the decryption key; transmitting to the terminal the decrypted data block.