Method and system for protecting against unity keys
US8422673B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2006 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Dec 20, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3249
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus, method and/or computer-readable medium protects against use of a unity key in a public key infrastructure (PKI). A public key and a private key are acquired according to the PKI. A message is encrypted by the public key to obtain ciphertext. A portion of the ciphertext is compared with a portion of the message. If the portion of the ciphertext is substantially equal to the portion of the message, a larger portion of the ciphertext is compared with a larger portion of the message to determine if the ciphertext is substantially equal to the message. If the ciphertext is substantially equal to the message, the ciphertext is rejected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.