Secure memory transaction unit
US8843767B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Dec 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/85
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for providing security for plaintext data being transferred between units in a computer system includes steps of dividing a memory into a series of addressable locations, each of the addressable locations having an address at which can be stored version information, a data authentication tag, and ciphertext corresponding to the plaintext. The system retrieves the ciphertext, the version information, and the data authentication tag, and generates encryption keys for decrypting the information stored at the address. If the data authentication tag indicates the plaintext data are valid, then the system provides the decrypted plaintext to the requestor, or encrypts new plaintext data and stores the corresponding ciphertext with new authentication and version information at the first address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.