Method and system for the secure transfer of a dataset

US11323251B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Steffen Fries · Baldham, DE
• Ute Rosenbaum · Kempten, DE

Key dates

• Filing date: Dec 17, 2019
• Grant date: May 3, 2022
• Expiry date: Jan 13, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L63/168
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method for transfer of a dataset includes provisioning or generating a user-side Diffie Hellman key pair, including a secret user key and a public user key; transferring the public user key to the server; provisioning or generating a server-side Diffie Hellman key pair, including secret server and public server keys; provisioning a dataset on the server; generating a server-side Diffie Hellman key using the secret server key and the public user key, and encrypting the dataset to generate an encrypted dataset, via a resulting server-side Diffie Hellman key generated on the server side; transferring the encrypted dataset to the cloud service; retrieving the public server key and the encrypted dataset from the cloud service; and generating a user-side Diffie Hellman key using the secret user key and the public server key retrieved, and decrypting the encrypted dataset on the user device using the user-side Diffie Hellman key.