公开(公告)号：US20180241550A1

公开(公告)日：2018-08-23

申请号：US15694883

申请日：2017-09-04

Applicant: Cisco Technology, Inc.

Inventor： Benyamin HIRSCHBERG ,  Yaron SELLA ,  Gilad TAUB

IPC: H04L9/08 ,  H04L9/06

Abstract: In one embodiment, a first apparatus includes a processor and an interface, wherein the interface is operative to receive a request from a second apparatus to commence a keyed-hash message authentication code (HMAC) computation, the processor is operative to perform a first computation computing a first part of the HMAC computation using a secret key K as input yielding a first value, the interface is operative to send the first value to the second apparatus, the interface is operative to receive a second value from the second apparatus, the second value resulting from the second apparatus processing the first value with at least part of a message M, the processor is operative to perform a second computation based on the second value and the secret key K yielding an HMAC value, and the interface is operative to send the HMAC value to the second apparatus.