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1. US20220376923 - MESSAGE AUTHENTICATION

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Office
United States of America
Application Number 17769980
Application Date 16.10.2020
Publication Number 20220376923
Publication Date 24.11.2022
Publication Kind A1
IPC
H04L 9/32
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communications; Network security protocols
32including means for verifying the identity or authority of a user of the system
H04L 9/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communications; Network security protocols
08Key distribution
H04L 9/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communications; Network security protocols
CPC
H04L 9/3247
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
32including means for verifying the identity or authority of a user of the system ; or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
3247involving digital signatures
H04L 9/3242
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
32including means for verifying the identity or authority of a user of the system ; or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
3236using cryptographic hash functions
3242involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
H04L 9/0825
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
08Key distribution ; or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
0816Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
0819Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
0825using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
H04L 9/50
Applicants Illinois at Singapore Pte Ltd
Inventors Ertem ESINER
Binbin CHEN
Daisuke MASHIMA
David M. NICOL
Zbigniew KALBARCZYK
Utku TEFEK
Priority Data 10201909762U 18.10.2019 SG
Title
(EN) MESSAGE AUTHENTICATION
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Abstract
(EN)

Disclosed herein is a method of provisioning a message authentication protocol in a system of connected devices, the method comprising, by at least one of the connected devices: generating a private key and a public key; transmitting the public key to each other connected device; generating, by a sequence of hash operations using the private key, a hash tree, wherein each leaf node of the hash tree can have two or more values, each of the two or more values being associated with a respective nonce value, and wherein each leaf node has a hash computed from the concatenation of the respective nonce values; signing a root of the hash tree with the private key; and transmitting the root and the root signature to each other connected device.
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