Secure key exchange mechanism in a wireless communication system

Secure key exchange mechanism in a wireless communication system

Security features for a wireless communications system including encryption and decryption of communications, secure key exchange, secure pairing, and secure re-pairing are provided. The encryption/decryption mechanism uses AES-256 block cypher with counter mode to generate blocks of cypher bits use...

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Hauptverfasser: Tal, Nir Efraim Joseph, Wolberg, Dan, Regev, Alex
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
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creator Tal, Nir Efraim Joseph
Wolberg, Dan
Regev, Alex
description Security features for a wireless communications system including encryption and decryption of communications, secure key exchange, secure pairing, and secure re-pairing are provided. The encryption/decryption mechanism uses AES-256 block cypher with counter mode to generate blocks of cypher bits used to encrypt and decrypt communications between a master and devices. Session keys are generated using a random salt and a counter value. The random salt is generated using a secure random number generator. A master key or device key is also used in generating session keys. Impermanent session keys are used to encrypt/decrypt finite amount of data. Thereafter, the session key is replaced and cypher bits are generated using the new session key. A synchronized key jump procedure ensures that the master and device switch to the new session key at the same time.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
title Secure key exchange mechanism in a wireless communication system
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