Decoding Orders for Securing Untrusted NOMA

SiRiUS: Securing Remote Untrusted Storage

This paper presents SiRiUS, a secure file system designed to be layered over insecure network and P2P file systems such as NFS, CIFS, OceanStore, and Yahoo! Briefcase. SiRiUS assumes the network storage is untrusted and provides its own read-write cryptographic access control for file level sharing. Key management and revocation is simple with minimal out-of-band communication. File system fres...

Securing Untrusted and Malicious Software

Secret-Key-Aided Scheme for Securing Untrusted DF Relaying Networks

This paper proposes a new scheme to secure the transmissions in an untrusted decode-and-forward (DF) relaying network. A legitimate source node, Alice, sends her data to a legitimate destination node, Bob, with the aid of an untrusted DF relay node, Charlie. To secure the transmissions from Charlie during relaying time slots, each data codeword is secured using a secret-key codeword that has be...

LEVEEFS : Securing Access to Untrusted Filesystems in Enclaved Execution

Enclaved execution techniques like Intel SGX guarantee secure execution of applications in presence of a compromised operating system. However, these techniques still rely on the underlying OS for services such as filesystem management. In this paper, we present attacks called syscall-abuse attacks on applications such as OpenSSL and ClamAV in presence of a compromised filesystem management ser...

On the (Im)Practicality of Securing Untrusted Computing Clouds with Cryptography

In a recent interview, Whitfield Diffie argued that “the whole point of cloud computing is economy” and while it is possible in principle for “computation to be done on encrypted data, [...] current techniques would more than undo the economy gained by the outsourcing and show little sign of becoming practical”. In this paper we aim to understand whether this is truly the case and quantify just...