Radio transceiver or other encryption device having secure...

Details Radio transceiver or other encryption device having secure... Radio transceiver or other encryption device having secure...

2011-08-23

2011-08-23

Song, Hosuk (Department: 2435)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

C713S193000, C713S194000, C380S046000

Reexamination Certificate

active

08006101

ABSTRACT:
An encryption device includes a system processor having a first key for encrypting information. The system processor periodically generates random data strings that are also encrypted using the first key. The encryption device also includes a first output for communicating the encrypted information to an external location and a tamper detection module for receiving on a periodic basis the random data strings generated by the system processor. The tamper detection module includes a second key that is the same as the first key, an encryption engine for encrypting the random data strings using the second key, and a second output for communicating the encrypted data strings to the system processor. The tamper detection module is configured to alter the second key upon detection of a tampering event so that the second key is different from the first key.

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