Patent · US Active

Hash function using a piling-up process

US8184804B2 · kind B2 · utility

1Cited by

0References

23Claims

0Family size

Assignee

Apple Inc. · US

Inventors

Augustin J. Farrugia · Cupertino, US
Mathieu Ciet · Paris, FR
Benoit Chevallier-Mames · Paris, FR

Key dates

Filing date	Apr 30, 2009
Grant date	May 22, 2012
Priority date	—
Expiry date	Dec 26, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/3236
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In the computer data security field, a cryptographic hash function process embodied in a computer system and which is typically keyless, but is highly secure. The process is based on the type of randomness exhibited by well known tetromino stacking games. Computation of the hash value (digest) is the result of executing such a “piling on” (tetromino stacking game) algorithm using the message as an input (a seed) to a pseudo random number generator which generates the game pieces (shapes) from the resulting random numbers, then executing the game algorithm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.