Remotely keyed encryption schemes (RKESs) support fast encryption and decryption using low-bandwidth devices, such as secure smartcards. The long-lived secret keys never leave the smartcard, but most of the encryption is done on a fast untrusted device, such as the smartcard's host. This paper describes an new scheme, the length-preserving "accelerated remotely keyed" (ARK) encryption scheme and, in a formal model, provides a proof of security. For the sake of practical usability, our model avoids asymptotics.
Dieser Eintrag ist Teil der Universitätsbibliographie.
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