Patent · US Active

Memory optimization for nested hash operations

US10911221B2 · kind B2 · utility

1Cited by

19References

20Claims

0Family size

Assignee

Cryptography Research, Inc. · US

Inventors

Michael Hutter · Walnut Creek, US
Matthew Pond Baker · San Francisco, US

Key dates

Filing date	Oct 17, 2019
Grant date	Feb 2, 2021
Priority date	—
Expiry date	Oct 17, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG09C1/00
WIPO fieldControl
WIPO sectorInstruments

Abstract

A first hash value is calculated by using a first input value that is stored in a first set of registers. The first hash value is then stored in a second set of registers. A second input value is stored in the first set of registers after calculating the first hash value. The second hash value is calculated based on the first hash value and the second input value. During the calculating of the second hash value, the first hash value is shifted from the second set of registers to a portion of the first set of registers when the calculating of the second hash value has reached a state where the portion of the first set of registers is no longer used to store the second input value.

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