Evaluation of the Single Keybit Template Attack

<p>Side Channel leakage is a serious threat to secure devices. Cryptographic information extraction is possible after examining any one of the various side channels including electromagnetic. This work contributes a new method to achieve such a purpose. The Single Keybit Template Attack (SKTA) is introduced as a means to extract encryption keys from embedded processors and other integrated circuit devices performing DES encryptions by passively monitoring and exploiting unintentional RF emissions. Key extraction is accomplished by creating two templates for each bit value of the key based on instantaneous amplitude responses as a device executes DES operations. The resultant templates are input to a Maximum Likelihood processor for subsequent template discrimination with RF emissions captured from a target device. Plaintext and ciphertext are not necessary for SKTA to function. Using 8-bit microcontroller devices and experimentally collected side channel signals key extraction is possible after examination of approximately 300 RF emission traces. After consideration of SKTA's capabilities embedded processors using DES to process sensitive data warrants reconsideration.</p><p>This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact and remains as true to the original work as possible. Therefore you will see the original copyright references library stamps (as most of these works have been housed in our most important libraries around the world) and other notations in the work.</p><p>This work is in the public domain in the United States of America and possibly other nations. Within the United States you may freely copy and distribute this work as no entity (individual or corporate) has a copyright on the body of the work.</p><p>As a reproduction of a historical artifact this work may contain missing or blurred pages poor pictures errant marks etc. Scholars believe and we concur that this work is important enough to be preserved reproduced and made generally available to the public. We appreciate your support of the preservation process and thank you for being an important part of keeping this knowledge alive and relevant.</p>