CONTROL MECHANISM FOR CONTROL OF VERSION OF CODE KEY

PURPOSE: To dynamically change the cryptographic master key of a system without stopping the system or spoiling the integrity of cipher processing operation that is being executed. CONSTITUTION: A cipher processing mechanism 102 and a cipher processing support program 111 are used. Individual master...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	JIYURIAN TOOMASU, MAIKERU JIEEMUZU KERII, RONARUDO MOOTON SUMISU, FUIRU CHIICHIYUN IEE, RUSHINA RIINIEN GURIIN
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING CALCULATING CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY COMPUTING COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS SEALS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE: To dynamically change the cryptographic master key of a system without stopping the system or spoiling the integrity of cipher processing operation that is being executed. CONSTITUTION: A cipher processing mechanism 102 and a cipher processing support program 111 are used. Individual master keys are given characteristic version numbers. When an inputted master key is used as a new current master key, the current master key used so far is changed into an old master key. When it is found from a version number attached to a received cipher processing request that the key used for the received request is a key ciphered with the old master key, the key is reciphered and converted from the key ciphered with the old master key into a key ciphered with the current master key, and the converted key is used thereafter.