Results 1 - 10 of 465

Vogels, U-Net: a user-level network interface for parallel and distributed computing, in:

by Anindya Basu , Vineet Buch , Werner Vogels , Thorsten Von Eicken - Proceedings of the 15th ACM Symposium on Operating System Principles, ACM, , 1995
"... Abstract The U-Net communication architecture provides processes with a virtual view of a network device to enable user-level access to high-speed communication devices. The architecture, implemented on standard workstations using off-the-shelf ATM communication hardware, removes the kernel from th ..."
Abstract - Cited by 597 (17 self) - Add to MetaCart
Abstract The U-Net communication architecture provides processes with a virtual view of a network device to enable user-level access to high-speed communication devices. The architecture, implemented on standard workstations using off-the-shelf ATM communication hardware, removes the kernel from

Terra: a virtual machine-based platform for trusted computing

by Tal Garfinkel, Ben Pfaff, Jim Chow, Mendel Rosenblum, Dan Boneh , 2003
"... We present a flexible architecture for trusted computing, called Terra, that allows applications with a wide range of security requirements to run simultaneously on commodity hardware. Applications on Terra enjoy the semantics of running on a separate, dedicated, tamper-resistant hardware platform, ..."
Abstract - Cited by 431 (5 self) - Add to MetaCart
We present a flexible architecture for trusted computing, called Terra, that allows applications with a wide range of security requirements to run simultaneously on commodity hardware. Applications on Terra enjoy the semantics of running on a separate, dedicated, tamper-resistant hardware platform

A Hardware Architecture for Implementing Protection Rings

by Michael D. Schroeder, Jerome H. Saltzer - FINAL DRAFT FOR CACM , 1971
"... Protection of computations and information is an important aspect of a computer utility. In a system which uses segmentation as a memory addressing scheme, protection can be achieved in part by associating concentric rings of decreasing access privilege with a computation. This paper describes hardw ..."
Abstract - Cited by 99 (4 self) - Add to MetaCart
hardware processor mechanisms for implementing these rings of protection. The mechanisms allow cross-ring calls and subsequent returns to occur without trapping to the supervisor. Automatic hardware validation of references across ring boundaries is also performed. Thus, a call by a user procedure to a

Improving the reliability of commodity operating systems

by Michael M. Swift, Brian N. Bershad, Henry M. Levy , 2003
"... drivers remain a significant cause of system failures. In Windows XP, for example, drivers account for 85 % of recently reported failures. This article describes Nooks, a reliability subsystem that seeks to greatly enhance operating system (OS) reliability by isolating the OS from driver failures. T ..."
Abstract - Cited by 317 (14 self) - Add to MetaCart
lightweight protection domains inside the kernel address space, where hardware and software prevent them from corrupting the kernel. Nooks also tracks a driver’s use of kernel resources to facilitate automatic cleanup during recovery. To prove the viability of our approach, we implemented Nooks in the Linux

Speculative Lock Elision: Enabling Highly Concurrent Multithreaded Execution

by Ravi Rajwar, James R. Goodman , 2001
"... Serialization of threads due to critical sections is a fundamental bottleneck to achieving high performance in multithreaded programs. Dynamically, such serialization may be unnecessary because these critical sections could have safely executed concurrently without locks. Current processors cannot f ..."
Abstract - Cited by 227 (10 self) - Add to MetaCart
fully exploit such parallelism because they do not have mechanisms to dynamically detect such false inter-thread dependences. We propose Speculative Lock Elision (SLE), a novel micro-architectural technique to remove dynamically unnecessary lock-induced serialization and enable highly concurrent

Implementing an Untrusted Operating System on Trusted Hardware

by David Lie, Chandramohan A. Thekkath, Mark Horowitz - In Proceedings of the 19th ACM Symposium on Operating Systems Principles , 2003
"... Recently, there has been considerable interest in providing "trusted computing platforms" using hardware --- TCPA and Palladium being the most publicly visible examples. In this paper we discuss our experience with building such a platform using a traditional time-sharing operating system ..."
Abstract - Cited by 89 (0 self) - Add to MetaCart
executing on XOM --- a processor architecture that provides copy protection and tamper-resistance functions. In XOM, only the processor is trusted; main memory and the operating system are not trusted.

StackGhost: Hardware Facilitated Stack Protection

by Mike Frantzen, Mike Shuey - In Proceedings of the 10th USENIX Security Symposium , 2001
"... Conventional security exploits have relied on overwriting the saved return pointer on the stack to hijack the path of execution. Under Sun Microsystem 's Sparc processor architecture, we were able to implement a kernel modification to transparently and automatically guard applications' ret ..."
Abstract - Cited by 94 (0 self) - Add to MetaCart
' return pointers. Our implementation called StackGhost under OpenBSD 2.8 acts as a ghost in the machine. StackGhost advances exploit prevention in that it protects every application run on the system without their knowledge nor does it require their source or binary modification. We will document several

A masked ring-LWE implementation?

by Oscar Reparaz, Sujoy Sinha Roy, Frederik Vercauteren, Ingrid Verbauwhede
"... Abstract. Lattice-based cryptography has been proposed as a postquan-tum public-key cryptosystem. In this paper, we present a masked ring-LWE decryption implementation resistant to first-order side-channel attacks. Our solution has the peculiarity that the entire computation is performed in the mask ..."
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in the masked domain. This is achieved thanks to a new, bespoke masked decoder implementation. The output of the ring-LWE decryption are Boolean shares suitable for derivation of a symmetric key. We have implemented a hardware architecture of the masked ring-LWE processor on a Virtex-II FPGA, and have performed

Architectural Considerations for Cryptanalytic Hardware

by Ian Goldberg, David Wagner - Secrets of Encryption Research, Wiretap Politics & Chip Design , 1996
"... We examine issues in high-performance cryptanalysis, focusing on the use of programmable logic. Several standard techniques from computer architecture are adapted and applied to this application. We present performance measurements for RC4, A5, DES, and CDMF; these measurements were taken from actua ..."
Abstract - Cited by 9 (0 self) - Add to MetaCart
We examine issues in high-performance cryptanalysis, focusing on the use of programmable logic. Several standard techniques from computer architecture are adapted and applied to this application. We present performance measurements for RC4, A5, DES, and CDMF; these measurements were taken from

UMTS security: system architecture and hardware implementation

by Wirel Commun, Mob Comput, P. Kitsos, N. Sklavos, O. Koufopavlou
"... Universal mobile telecommunication system (UMTS) has specified security mechanisms with extra features compared to the security mechanisms of previous mobile communication systems (GSM, DECT). A hardware implementation of the UMTS security mechanism is presented in this paper. The proposed VLSI syst ..."
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. The proposed implementation performs the AKA procedure within 76 ms comparing with the 500 ms that UMTS specifies. The data confidentiality and the integrity protection is based on KASUMI Block Cipher. The proposed KASUMI architecture reduces the hardware resources and power consumption. It uses feedback logic
Results 1 - 10 of 465