Method and means for combining and managing personal verification and message authentication encrytions for network transmission
US5319710A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1986 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Aug 22, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The method and means of transmitting a user's transaction message to a destination node in a computer-secured network operates on the message, and a sequence number that is unique to the transaction message to form a message authentication code in combination with the user's personal identification number. The message authentication code is encrypted with a generated random number and a single session encryption key which also encrypts the user's personal identification number. An intermediate node may receive the encryptions to reproduce the personal identification number that is then used to encrypt the received message and sequence number to produce the random number and a message authentication code for comparison with a decrypted message authentication code. Upon favorable comparison, the random number and the message authentication code are encrypted with a second session encryption key to produce an output code that is transmitted to the destination node along with an encrypted personal identification number. There, the received encryptions are decrypted using the second session key to provide the personal identification number for use in encrypting the message and sequence …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.