English

Tempest Attacks Against AES

Tempest attacks against AES. Covertly stealing keys for €200 Side-channel attacks can recover secret keys from cryptographic algorithms (including the pervasive AES) using measurements such as power use. However, these previously-known attacks on AES tend to require unrestricted, physical access to the device. Using improved antenna and signal processing, Fox-IT and Riscure show how to covertly recover the encryption key from two realistic AES-256 implementations while: 1. Attacking at a distance of up to 1 m (30 cm in realistic conditions; "TEMPEST"), 2. Using minimal equipment (fits in a jacket pocket, costs less than €200) and 3. Needing only a few minutes (5 minutes for 1 m and 50 seconds for 30 cm. To the best of our knowledge, this is the first public demonstration of such covert attacks from a distance. This demonstration reinforces the real need for defence-in-depth when designing high assurance systems

Connectez-vous à votre compte gratuit pour lire, télécharger des EPUB ou écouter.