DATA ENCRYPTION KEY FAILURE MONITOR

An encryption key, required to encrypt and decrypt data according to a predefined algorithm, is usually retained in a volatile memory device. Detection of loss of the key or corruption of the key is freqeuntly possible only by means of the encryption circuit itself testing the key. Automated and rep...

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Bibliographic Details
Main Authors BJERGA, ERLING, SPIOTTA, MARK G
Format Patent
LanguageEnglish
French
Published 30.08.1994
Edition5
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
JAMMING OF COMMUNICATION
SECRET COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:An encryption key, required to encrypt and decrypt data according to a predefined algorithm, is usually retained in a volatile memory device. Detection of loss of the key or corruption of the key is freqeuntly possible only by means of the encryption circuit itself testing the key. Automated and repetitive testing of encryption keys by means of a processor or a control circuit periodically requesting the encryption circuit to test an encryption key minimizes data loss and system down time due to corrupted or lost keys.
Bibliography:Application Number: CA19892000252