Pre-generation of session keys for electronic transactions and devices that pre-generate session keys for electronic transactions
US10460314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2013 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Mar 5, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/062
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and devices for pre-generating session keys for securing transactions are provided. A plurality of session cryptographic keys are generated from a master cryptographic key and a respective plurality of possible values of a transaction counter. The session cryptographic keys are encrypted to provide a plurality of encrypted session cryptographic keys, which are stored in the user terminal. The master cryptographic key is deleted from the user terminal after the session keys are generated. To secure a transaction, a cryptogram is generated based on one of the encrypted session cryptographic keys and transaction data for the transaction, and the cryptogram is transmitted to a transaction terminal. The transaction counter is updated, and the encrypted session cryptographic key is deleted from the user terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.