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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： Docherty, James Koelmans, Albert Newcastle Univ Sch Elect Elect & Comp Engn Newcastle Upon Tyne NE1 7RU Tyne & Wear England

ISBN: (纸本)9781424494743

This paper summarizes the design of a reprogrammable Application Specific Integrated Circuit capable of performing all members of the secure hash algorithm (SHA) group of hash Functions. The need for high-speed cryptography is introduced, as well as the SHA-1 and SHA-2 hash Functions and their operation. Work performed at other institutions to improve throughput and power consumption is presented with advantages and disadvantages discussed. The ASIC design is then discussed, with comparisons made to previously published ASIC and FPGA implementations. The possibility of using this ASIC architecture for the SHA-3 candidates, as well as the Message Digest (MD) families of hash Functions is suggested as an area of future work as it is shown the ASIC Architecture designed would be capable of this with only program modifications required.

关键词： Cryptography hash Function secure hash algorithm

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Anonymous Location Aided secure Routing Protocol

Anonymous Location Aided Secure Routing Protocol

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International Conference on Information Communication and Embedded Systems (ICICES)

作者： Manjuladevi, V. Bharathi, R. Jennie Sri Krishna Coll Engn & Technol Dept ECE Coimbatore Tamil Nadu India

ISBN: (纸本)9781479938346

Anonymous location schemes classified into reactive routing methods and proactive routing methods and anonymous middleware methods. Reactive routing methods includes hop by hop encryption and redundant traffic analysis which either generates high cost or cannot provide full anonymity to source, destination and routes. An Anonymous Location-based Efficient Routing protocol (ALERT) was used to offer high anonymity protection at a low cost. GPSR protocol is used to transmit message from source to destination. Like other anonymity routing algorithms, ALERT is not completely bulletproof to all attacks. To prevent occurrence of active attacks advanced cryptographic algorithm SHA-2 is used, which provides better security features. Thus it provides full anonymity in Source destination as well as in route.

关键词： ALERT GPSR secure hash algorithm Anonymity

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On the Implementation of McEliece with CCA2 Indeterminacy by SHA-3

On the Implementation of McEliece with CCA2 Indeterminacy by...

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： Ghosh, Santosh Intel Corp Intel Labs Secur & Privacy Res Hillsboro OR 97124 USA

ISBN: (纸本)9781479934324

This paper deals with the design and implementation of the post-quantum public-key algorithm McEliece. Seamless incorporation of a new error generator and new SHA-3 module provides higher indeterminacy and more randomization of the original McEliece algorithm and achieves CCA2 security standard. Due to the lightweight and high-speed implementation of SHA-3 module the proposed 128-bit secure McEliece architecture provides 6% higher performance in only 0.78 times area of the best known existing design.

关键词： Post-quantum cryptography McEliece CCA2 SHA-3 Keccak secure hash algorithm public-key

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Ultra High Throughput Implementations for MD5 hash algorithm on FPGA

Ultra High Throughput Implementations for MD5 Hash Algorithm...

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2nd International Conference on High Performance Computing and Applications

作者： Wang, Yuliang Zhao, Qiuxia Jiang, Liehui Shao, Yi China Natl Digital Switching Syst Engn & Technol Zhengzhou 450002 Peoples R China

ISBN: (纸本)9783642118418

This paper first presents a new architecture of MD5, which achieved the theoretical upper bound on throughput in the iterative architecture. And then based on the general proposed architecture, this paper implemented other two different kinds of pipelined architectures which are based on the iterative technique and the loop unrolling technique respectively. The latter with 32-stage pipelining reached a throughput up to 32.035Gbps on an Altera Stratix II GX EP2SGX90FF FPGA, and the speedup achieved 194x over the Intel Pentium 4 3.0 processor. At least to the authors knowledge, this is the fastest published FPGA-based design at the time of writing. At last the proposed designs are compared with other published MD5 designs, the designs in this paper have obvious advantages both in speed and logic requirements.

关键词： secure hash algorithm MD5 Filed Programmable Gate Array (FPGA) Pipelining Loop unrolling Speedup

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LOCATION AWARE SELECTIVE UNLOCKING & secure VERIFICATION SAFER CARD FORENHANCING RFID SECURITY BY USING SHA-3. 2

LOCATION AWARE SELECTIVE UNLOCKING & SECURE VERIFICATION SAF...

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2nd IEEE International Conference on Advances in Computing and Communication Engineering (ICACCE)

作者： Dakhore, Sagar Lohiya, Padma DY Patil Coll Engn Dept E&TC Commun Network Pune Maharashtra India DY Patil Coll Engn Dept E&TC Pune Maharashtra India

ISBN: (纸本)9781479917341

In This Paper, we report a new approach for providing security as well as privacy to the corporate user. With the help of locations sensing mechanism by using GPS we can avoid the un-authorized reading & relay attacks on RFID system. For example, location sensing mechanism with RFID card is used for location specific application such as ATM cash transfer van for open the door of van. So after reaching the pre-specified location (ATM) the RFID card is active & then it accepts the fingerprint of the registered person only. In this way we get a stronger cross layer security. SHA-3 algorithm is used to avoid the collision (due to fraud fingerprint) effect on server side.

关键词： RFID Location Aware Selective unlocking Java Development kit (JDK) secure hash algorithm

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Hardware Acceleration of SHA-256 algorithm using NIOS-II Processor 8

Hardware Acceleration of SHA-256 Algorithm using NIOS-II Pro...

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8th International Conference on Modern Circuit and System Technologies (MOCAST)

作者： Sideris, Argirios Sanida, Theodora Dasygenis, Minas Univ Western Macedonia Dept Informat & Telecommun Engn Kozani 50131 Greece

ISBN: (纸本)9781728111841

Cryptography plays a leading role in the information transmission security. Even though encrypted, data can be altered when transmitted over a network. Therefore, to verify data the use of a digital signature is essential. hashing algorithms are used both to create digital signatures and to verify the receiving data. Our proposed design of a hashing algorithm, is a custom hardware implementation on a FPGA of the secure hash algorithm-2 (SHA-2), using Nios II processor. We use two acceleration techniques, to improve performance of SHA-2 computation: floating point and floating point 2. Finally, after applying these techniques, we studied all the designs in terms of integration time, the number of clock cycles and the percentage of overlap in the FPGA.

关键词： Cryptography secure hash algorithm SHA-2 NIOS II Processor Floating point Cyclone IV E FPGA SOPC Builder Accelerator

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De-duplication Approach with Enhance Security for Integrity 4

De-duplication Approach with Enhance Security for Integrity

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4th International Conference on Computing Communication Control and Automation (ICCUBEA)

作者： Pokale, Minal Bharat Chaware, Sandeep M. MMCOE Dept Comp Engn Pune Maharashtra India

ISBN: (纸本)9781538652572

Cloud computing becomes one of the important part of the IT-enterprise. It delivers computing application, software, hardware and computing resources to the user. So many user gets connected to the cloud because of the facility it provided. In this, user pays only for the services it uses. Now a days, vast amount of information gets stored over cloud, which include personal file, images, pdf, text, multimedia data etc. So security becomes one of the important issue. Everyone just want to upload, store its data without worrying about the security. IT organization should look after to provide security to the document. Documents content get altered by some outsider attacker, so it is necessary to verify the integrity. This data get duplicated and unnecessary much of the space will get waste. So to avoid this, data must be de-duplicated and uploaded over the cloud server. For this secure hash algorithm is used. It calculates the hash value for chunk of data and store over cloud. Only reducing unnecessary wastage of space is not the solution administrator should look toward the security issue. TPA is used for verification of integrity of the document. This system is proposed for achieving this both issues.

关键词： Cloud Server hash Table Third Party Auditor secure hash algorithm Chunk Private Server Encryption algorithm

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Some methods for blindfolded record linkage

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BMC Medical Informatics and Decision Making 2004年第1期4卷 1-17页

作者： Churches, Tim Christen, Peter Centre for Epidemiology and Research Population Health Division New South Wales Department of Health North Sydney NSW 2059 Locked Mail Bag 961 Australia Department of Computer Science Australian National University Canberra ACT 0200 Australia

Background: The linkage of records which refer to the same entity in separate data collections is a common requirement in public health and biomedical research. Traditionally, record linkage techniques have required that all the identifying data in which links are sought be revealed to at least one party, often a third party. This necessarily invades personal privacy and requires complete trust in the intentions of that party and their ability to maintain security and confidentiality. Dusserre, Quantin, Bouzelat and colleagues have demonstrated that it is possible to use secure one-way hash transformations to carry out follow-up epidemiological studies without any party having to reveal identifying information about any of the subjects - a technique which we refer to as "blindfolded record linkage". A limitation of their method is that only exact comparisons of values are possible, although phonetic encoding of names and other strings can be used to allow for some types of typographical variation and data errors. Methods: A method is described which permits the calculation of a general similarity measure, the n-gram score, without having to reveal the data being compared, albeit at some cost in computation and data communication. This method can be combined with public key cryptography and automatic estimation of linkage model parameters to create an overall system for blindfolded record linkage. Results: The system described offers good protection against misdeeds or security failures by any one party, but remains vulnerable to collusion between or simultaneous compromise of two or more parties involved in the linkage operation. In order to reduce the likelihood of this, the use of last-minute allocation of tasks to substitutable servers is proposed. Proof-of-concept computer programmes written in the Python programming language are provided to illustrate the similarity comparison protocol. Conclusion: Although the protocols described in this paper are not uncondit

关键词： Data Item Record Linkage Dictionary Attack Probabilistic Record Linkage secure hash algorithm

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Applying secure Authentication Scheme to Protect DNS from Rebinding Attack Using Proxy

Applying Secure Authentication Scheme to Protect DNS from Re...

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International Conference on Circuit, Power and Computing Technologies (ICCPCT)

作者： Pandiaraja, P. Parasuraman, S. Arunai Engn Coll Dept Comp Sci & Engn Thiruvannamalai Tamil Nadu India

ISBN: (纸本)9781479970759

Internet is critical to both the economy and society in today's world. Domain Name System (DNS) is a key building block of the internet and the DNS hides all technical infrastructures, software and hardware required for the domain name system to function correctly. It allows users to access websites and exchange emails. It runs a strong mechanism to provide the IP address of the internet host name. An attacker can launch rebinding attack when the DNS server sends a query to any particular server on the network. Different types of techniques have been proposed to prevent this attack that all have some pros and also cones. A new technique is proposed in this paper by using security proxy with a hash function. Rebinding attack can be avoided by using this technique. It provides a secured environment for the DNS to communicate with other DNS. While the source DNS are receiving response from any DNS it will authenticate of all the receiving packets and then sends the data to the client. It gives a secure environment for DNS communication. For this purpose 2 different algorithms are used, namely SHA-2 and AES algorithms. First a random ID will be given to the query and then the query is sent to the DNS server.

关键词： Proxy Rebinding attack secure hash algorithm Advanced Encryption Standard

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LDPC and SHA Based Iris Recognition for Smart Card Security

LDPC and SHA Based Iris Recognition for Smart Card Security

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International Conference on Advances in Computing (ICAdC 2012)

作者： Seetharaman, K. Ragupathy, R. Annamalai Univ Dept Comp Sci & Engn Annamalainagar 608002 Tamil Nadu India

ISBN: (纸本)9788132207399;9788132207405

We introduce a novel way to use Low Density Parity Check (LDPC) error correction code to reduce the variability and noise in iris code, which is generated from Iris Recognition System (IRS) and secure hash algorithm (SHA-512) to transform codewords into hash string to make them as a Cancel-lable Biometric. In the enrolment process, by using majority voting scheme a unique iris code is generated from n-iris codes of IRS from n-eye samples of same person in different time interval. Then the codewords from LDPC encoding, parity check matrix of LDPC and hash string of codewords from SHA-512 are stored into smart card for high security access environment. In the verification process, iris code from live person is generated by using IRS then LDPC decoding is applied with the help of stored codewords and parity check matrix in the smart card. For authentication, new hash string, produced by employing SHA-512 on corrected iris code is compared with hash string stored in smart card. The LDPC code reduces the Hamming distance for genuine comparisons by a larger amount than for the impostor comparisons. This results in better separation between genuine and impostor users which improves the verification performance. Security of this scheme is very high due to the security complexity of SHA-512, which is 2256 under birthday attack. Experimental results show that this approach can assure a higher security with a low false rejection or false acceptance rate.

关键词： Error Correction Code Low Density Parity Check Smart card secure hash algorithm Iris Recognition System

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