Left: a smart card reader processing the encryption key of an inserted smart card. Right: a surveillance camera video records the reader's power LED from 60 feet away. Credit: Nassi et al.

The research team discovered that an ECDSA key was stored unencrypted in the file of ClipUp, a program that converts Windows 8 store licenses, genuine tickets, and product keys into digital licenses.

HIP uses hashes of public keys as identifiers. These identifiers, or Host Identity Tags (HITs), are exposed to the transport layer and never change (well, strictly speaking, they might change if the ...

In demonstrations, they found that this could be used to recover a 256-bit ECDSA key from a smart card as well as a 378-bit SIKE key from a Samsung Galaxy S8 by watching the power LED of Logitech ...