The document summarizes research on RFID authentication protocols. It provides an introduction to RFID technology and security issues. It then describes a classification of authentication protocols based on the underlying algorithm, message exchange process, and whether they use origin authentication, destination authentication, or implicit authentication. Several lightweight mutual authentication protocols for RFID tags are discussed as examples, including LMAP, EMAP, and M2AP. References are provided for further research on RFID security and analyses of authentication protocols.
Bootstrapping Meta-Languages of Language WorkbenchesGabriël Konat
It is common practice to bootstrap compilers of programming languages. By using the compiled language to implement the compiler, compiler developers can code in their own high-level language and gain a large-scale test case. In this paper, we investigate bootstrapping of compiler-compilers as they occur in language workbenches. Language workbenches support the development of compilers through the application of multiple collaborating domain-specific meta-languages for defining a language's syntax, analysis, code generation, and editor support. We analyze the bootstrapping problem of language workbenches in detail, propose a method for sound bootstrapping based on fixpoint compilation, and develop recipes for conducting breaking meta-language changes in a bootstrapped language workbench. We have applied sound bootstrapping to the Spoofax language workbench and report on our experience.
Nltk natural language toolkit overview and application @ PyHugJimmy Lai
NLTK is a python toolkit for Natural Language Processing. In this slide, the author provides overview for NLTK and demonstrates an application in Chinese text classification.
Bootstrapping Meta-Languages of Language WorkbenchesGabriël Konat
It is common practice to bootstrap compilers of programming languages. By using the compiled language to implement the compiler, compiler developers can code in their own high-level language and gain a large-scale test case. In this paper, we investigate bootstrapping of compiler-compilers as they occur in language workbenches. Language workbenches support the development of compilers through the application of multiple collaborating domain-specific meta-languages for defining a language's syntax, analysis, code generation, and editor support. We analyze the bootstrapping problem of language workbenches in detail, propose a method for sound bootstrapping based on fixpoint compilation, and develop recipes for conducting breaking meta-language changes in a bootstrapped language workbench. We have applied sound bootstrapping to the Spoofax language workbench and report on our experience.
Nltk natural language toolkit overview and application @ PyHugJimmy Lai
NLTK is a python toolkit for Natural Language Processing. In this slide, the author provides overview for NLTK and demonstrates an application in Chinese text classification.
The key exchange protocol is one of the most elegant ways of establishing secure communication between pair of users by using a session key. The passwords are of low entropy, hence the protocol should resist all types of password guessing attacks. Recently ECC-3PEKE protocol has been proposed by Chang and Chang. They claimed the protocol is secure, efficient and practical. Unless their claims Yoon and Yoo presented an Undetectable online password guessing attack on the above protocol. A key recovery attackwas proved on ECC-3PEKE protocol using the Undetectable online password guessing attack proposed by Yoon and Yon. In the present paper an Impersonation attack on ECC-3PEKE protocol using the Undetectable online password guessing attack proposed by Yoon and Yon is demonstrated.
Elliptic Curve based Authenticated Session Key Establishment Protocol for Hig...IJNSA Journal
The existing authenticated session key establishment protocols are either vulnerable to dictionary attack on identity privacy of a client or the methods adopted to resist this attack are found to be computationally inefficient. This paper proposes a new authenticated key establishment protocol which uses elliptic curve based DDH problem. The protocol provides identity privacy of the client in addition to the other security properties needed for a session key establishment protocol. In comparison with the existing protocols, the proposed protocol offers equivalent security with less parameters resulting in lower computational load, communication bandwidth cost, power consumption and memory requirement.
In this paper, a computational science guided soft computing based cryptographic technique using Ant
Colony Intelligence (ACICT) has been proposed. In this proposed approach at first a metamorphosed
based strategy is used to produce intermediate cipher text. Finally, ACI generated keystream is used to
further encrypt the intermediate cipher text to produce the final cipher text. In this approach an ant agent
having a pheromone deposition consisting of a group of alphanumeric characters is called a key stream
and each character in the key stream is known as key. The key stream length always be less than or equal
to the plaintext to be encrypt. The keystream generation is based on distribution of characters in the
plaintext. Instead of transmitting the plain keystream to the receiver, further encryption is done on
keystream and encrypted keystream get transmitted to the receiver. Parametric tests are done and results
are compared with some existing classical techniques, which show comparable results for the proposed
system.
Semantics and optimisation of the SPARQL1.1 federation extensionOscar Corcho
Presentation done at ESWC2011 for the paper "Semantics and optimisation of the SPARQL1.1 federation extension". Buil-Aranda C, Arenas M, Corcho O. ESWC2011, May 2011, Hersonissos, Greece
Identity-Based Blind Signature Scheme with Message Recovery IJECEIAES
Blind signature allows a user to obtain a signature on a message without revealing anything about the message to the signer. Blind signatures play an important role in many real world applications such as e-voting, e-cash system where anonymity is of great concern. Due to the rapid growth in popularity of both wireless communications and mobile devices, the design of secure schemes with low-bandwidth capability is an important research issue. In this paper, we present a new blind signature scheme with message recovery in the ID-based setting using bilinear pairings over elliptic curves. The proposed scheme is unforgeable with the assumption that the Computational Diffie-Hellman problem is hard. We compare our scheme with the related schemes in terms of computational and communicational point of view.
Hamming net based Low Complexity Successive Cancellation Polar DecoderRSIS International
This paper aims to implement hybrid based Polar
encoder using the knowledge of mutual information and channel
capacity. Further a Hamming weight successive cancellation
decoder is simulated with QPSK modulation technique in
presence of additive white gaussian noise. The experimentation
performed with the effect of channel polarization has shown that
for 256- bit data stream, 30% channels has zero bit and 49%
channels are with a one bit capacity. The decoding complexity is
reduced to almost half as compared to conventional successive
cancellation decoding algorithm. However, the required SNR of
7 dB is achieved at the targeted BER of 10 -4. The penalty paid is
in terms of training time required at the decoding end.
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The key exchange protocol is one of the most elegant ways of establishing secure communication between pair of users by using a session key. The passwords are of low entropy, hence the protocol should resist all types of password guessing attacks. Recently ECC-3PEKE protocol has been proposed by Chang and Chang. They claimed the protocol is secure, efficient and practical. Unless their claims Yoon and Yoo presented an Undetectable online password guessing attack on the above protocol. A key recovery attackwas proved on ECC-3PEKE protocol using the Undetectable online password guessing attack proposed by Yoon and Yon. In the present paper an Impersonation attack on ECC-3PEKE protocol using the Undetectable online password guessing attack proposed by Yoon and Yon is demonstrated.
Elliptic Curve based Authenticated Session Key Establishment Protocol for Hig...IJNSA Journal
The existing authenticated session key establishment protocols are either vulnerable to dictionary attack on identity privacy of a client or the methods adopted to resist this attack are found to be computationally inefficient. This paper proposes a new authenticated key establishment protocol which uses elliptic curve based DDH problem. The protocol provides identity privacy of the client in addition to the other security properties needed for a session key establishment protocol. In comparison with the existing protocols, the proposed protocol offers equivalent security with less parameters resulting in lower computational load, communication bandwidth cost, power consumption and memory requirement.
In this paper, a computational science guided soft computing based cryptographic technique using Ant
Colony Intelligence (ACICT) has been proposed. In this proposed approach at first a metamorphosed
based strategy is used to produce intermediate cipher text. Finally, ACI generated keystream is used to
further encrypt the intermediate cipher text to produce the final cipher text. In this approach an ant agent
having a pheromone deposition consisting of a group of alphanumeric characters is called a key stream
and each character in the key stream is known as key. The key stream length always be less than or equal
to the plaintext to be encrypt. The keystream generation is based on distribution of characters in the
plaintext. Instead of transmitting the plain keystream to the receiver, further encryption is done on
keystream and encrypted keystream get transmitted to the receiver. Parametric tests are done and results
are compared with some existing classical techniques, which show comparable results for the proposed
system.
Semantics and optimisation of the SPARQL1.1 federation extensionOscar Corcho
Presentation done at ESWC2011 for the paper "Semantics and optimisation of the SPARQL1.1 federation extension". Buil-Aranda C, Arenas M, Corcho O. ESWC2011, May 2011, Hersonissos, Greece
Identity-Based Blind Signature Scheme with Message Recovery IJECEIAES
Blind signature allows a user to obtain a signature on a message without revealing anything about the message to the signer. Blind signatures play an important role in many real world applications such as e-voting, e-cash system where anonymity is of great concern. Due to the rapid growth in popularity of both wireless communications and mobile devices, the design of secure schemes with low-bandwidth capability is an important research issue. In this paper, we present a new blind signature scheme with message recovery in the ID-based setting using bilinear pairings over elliptic curves. The proposed scheme is unforgeable with the assumption that the Computational Diffie-Hellman problem is hard. We compare our scheme with the related schemes in terms of computational and communicational point of view.
Hamming net based Low Complexity Successive Cancellation Polar DecoderRSIS International
This paper aims to implement hybrid based Polar
encoder using the knowledge of mutual information and channel
capacity. Further a Hamming weight successive cancellation
decoder is simulated with QPSK modulation technique in
presence of additive white gaussian noise. The experimentation
performed with the effect of channel polarization has shown that
for 256- bit data stream, 30% channels has zero bit and 49%
channels are with a one bit capacity. The decoding complexity is
reduced to almost half as compared to conventional successive
cancellation decoding algorithm. However, the required SNR of
7 dB is achieved at the targeted BER of 10 -4. The penalty paid is
in terms of training time required at the decoding end.
Premium MEAN Stack Development Solutions for Modern BusinessesSynapseIndia
Stay ahead of the curve with our premium MEAN Stack Development Solutions. Our expert developers utilize MongoDB, Express.js, AngularJS, and Node.js to create modern and responsive web applications. Trust us for cutting-edge solutions that drive your business growth and success.
Know more: https://www.synapseindia.com/technology/mean-stack-development-company.html
Implicitly or explicitly all competing businesses employ a strategy to select a mix
of marketing resources. Formulating such competitive strategies fundamentally
involves recognizing relationships between elements of the marketing mix (e.g.,
price and product quality), as well as assessing competitive and market conditions
(i.e., industry structure in the language of economics).
Attending a job Interview for B1 and B2 Englsih learnersErika906060
It is a sample of an interview for a business english class for pre-intermediate and intermediate english students with emphasis on the speking ability.
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Memorandum Of Association Constitution of Company.pptseri bangash
www.seribangash.com
A Memorandum of Association (MOA) is a legal document that outlines the fundamental principles and objectives upon which a company operates. It serves as the company's charter or constitution and defines the scope of its activities. Here's a detailed note on the MOA:
Contents of Memorandum of Association:
Name Clause: This clause states the name of the company, which should end with words like "Limited" or "Ltd." for a public limited company and "Private Limited" or "Pvt. Ltd." for a private limited company.
https://seribangash.com/article-of-association-is-legal-doc-of-company/
Registered Office Clause: It specifies the location where the company's registered office is situated. This office is where all official communications and notices are sent.
Objective Clause: This clause delineates the main objectives for which the company is formed. It's important to define these objectives clearly, as the company cannot undertake activities beyond those mentioned in this clause.
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Liability Clause: It outlines the extent of liability of the company's members. In the case of companies limited by shares, the liability of members is limited to the amount unpaid on their shares. For companies limited by guarantee, members' liability is limited to the amount they undertake to contribute if the company is wound up.
https://seribangash.com/promotors-is-person-conceived-formation-company/
Capital Clause: This clause specifies the authorized capital of the company, i.e., the maximum amount of share capital the company is authorized to issue. It also mentions the division of this capital into shares and their respective nominal value.
Association Clause: It simply states that the subscribers wish to form a company and agree to become members of it, in accordance with the terms of the MOA.
Importance of Memorandum of Association:
Legal Requirement: The MOA is a legal requirement for the formation of a company. It must be filed with the Registrar of Companies during the incorporation process.
Constitutional Document: It serves as the company's constitutional document, defining its scope, powers, and limitations.
Protection of Members: It protects the interests of the company's members by clearly defining the objectives and limiting their liability.
External Communication: It provides clarity to external parties, such as investors, creditors, and regulatory authorities, regarding the company's objectives and powers.
https://seribangash.com/difference-public-and-private-company-law/
Binding Authority: The company and its members are bound by the provisions of the MOA. Any action taken beyond its scope may be considered ultra vires (beyond the powers) of the company and therefore void.
Amendment of MOA:
While the MOA lays down the company's fundamental principles, it is not entirely immutable. It can be amended, but only under specific circumstances and in compliance with legal procedures. Amendments typically require shareholder
Improving profitability for small businessBen Wann
In this comprehensive presentation, we will explore strategies and practical tips for enhancing profitability in small businesses. Tailored to meet the unique challenges faced by small enterprises, this session covers various aspects that directly impact the bottom line. Attendees will learn how to optimize operational efficiency, manage expenses, and increase revenue through innovative marketing and customer engagement techniques.
Tata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s DholeraAvirahi City Dholera
The Tata Group, a titan of Indian industry, is making waves with its advanced talks with Taiwanese chipmakers Powerchip Semiconductor Manufacturing Corporation (PSMC) and UMC Group. The goal? Establishing a cutting-edge semiconductor fabrication unit (fab) in Dholera, Gujarat. This isn’t just any project; it’s a potential game changer for India’s chipmaking aspirations and a boon for investors seeking promising residential projects in dholera sir.
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Enterprise Excellence is Inclusive Excellence.pdfKaiNexus
Enterprise excellence and inclusive excellence are closely linked, and real-world challenges have shown that both are essential to the success of any organization. To achieve enterprise excellence, organizations must focus on improving their operations and processes while creating an inclusive environment that engages everyone. In this interactive session, the facilitator will highlight commonly established business practices and how they limit our ability to engage everyone every day. More importantly, though, participants will likely gain increased awareness of what we can do differently to maximize enterprise excellence through deliberate inclusion.
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Enterprise Excellence is a holistic approach that's aimed at achieving world-class performance across all aspects of the organization.
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A way to engage all in creating Inclusive Excellence. Lessons from the US military and their parallels to the story of Harry Potter. How belt systems and CI teams can destroy inclusive practices. How leadership language invites people to the party. There are three things leaders can do to engage everyone every day: maximizing psychological safety to create environments where folks learn, contribute, and challenge the status quo.
Who might benefit? Anyone and everyone leading folks from the shop floor to top floor.
Dr. William Harvey is a seasoned Operations Leader with extensive experience in chemical processing, manufacturing, and operations management. At Michelman, he currently oversees multiple sites, leading teams in strategic planning and coaching/practicing continuous improvement. William is set to start his eighth year of teaching at the University of Cincinnati where he teaches marketing, finance, and management. William holds various certifications in change management, quality, leadership, operational excellence, team building, and DiSC, among others.
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Vat Registration is a legal obligation for businesses meeting the threshold requirement, helping companies avoid fines and ramifications. Contact now!
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LA HUG - Video Testimonials with Chynna Morgan - June 2024Lital Barkan
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Unveiling the Secrets How Does Generative AI Work.pdfSam H
At its core, generative artificial intelligence relies on the concept of generative models, which serve as engines that churn out entirely new data resembling their training data. It is like a sculptor who has studied so many forms found in nature and then uses this knowledge to create sculptures from his imagination that have never been seen before anywhere else. If taken to cyberspace, gans work almost the same way.
16. Prototypes of Authentication A B : APubKey { B , r B } A B : r B DA F, Ack A B : APubKey { B , r B } DA F, NoAck A B : APubKey { B } DA Destination Authentication (DA) A B : r B A B : APriKey { B , r B } OA F A B : TS A , APriKey { B , TS A } OA S A B : APriKey { B } OA Origin Authentication (OA) A B : r B A: Ap riKey { B , r B } IA F A : ApriKey { B } IA Ø Implicit Authentication (IA) Example Authentication Type
17. Prototypes of Mutual Authentication 1. A B: r A 2. A B: r B A: APriKey { B , r B } B: BPriKey { A , r A } IA F -IA F A: APriKey { B } B: BPriKey { A } 1. A B: BPubKey { A } DA 1. A B: r A B: IA F- Example Prototype
18. Prototypes of Mutual Authentication 1. A B: r A 2. A B: APubKey { B , r B , BPriKey { A , r A } } or, 1. A B: r A 2. A B: BPriKey { A , r A , APubKey { B , r B } } OA F - DA F , NoAck 1. A B: r A 2. A B: BPriKey { A , r A }, r B 3. A B: APrikey { B , r B } OA F -OA F 1. A B: r A , TS A , APriKey { B , TS A } B: BPriKey { r A } IA F -OA S Example Prototype
19. Prototypes of Mutual Authentication 1. A B: BPubKey { A , r A } 2. A B: APubKey { B , r B }, r A 3. A B: r B DA F,Ack -DA F,Ack 1. A B: BPubKey { A , r A } 2. A B: APubKey { B , r B } DA F,NoAck -DA F,NoAck 1. A B: BPubKey { A , r A } 2. A B: r A , r B 3. A B: APriKey { B , r B } DA F,Ack -OA F 1. A B: BPubKey { A , r A , TS A , APriKey { B , TS A } } or, 1. A B: TSA , APriKey { B , TS A , BPubKey { A , r A } } DA F,NoAck -OA S Example Prototype
. Origin Authentication (OA): If a protocol contains a message which is generated applying a private key on random nonce i.e. the message is of the form APriKey {·} then we say the protocol provides origin authentication of the entity . Destination Authentication (DA ): If a protocol contains a message which is generated by application of public key on randomly generated nonce i.e. the message is of the form APubKey {·} then it provides destination authentication of the entity A . Implicit Authentication (IA): If a protocol contains no message of the form APriKey {·} or APubKey {·}, but still requires entity A to compute a value of the form APriKey { ·}, then we say that the protocol provides implicit authentication of A.
IA F - ( Implicit Authentication with forced challenge and no msg from the prover ) implies that the message does not contain any message of the form APriKey {·} or ApubKey {·}, but still requires the verifier (A ) to compute a value of the form ApriKey { ·} and there is no subsequent response from the prover (B) it just computes the msg BPriKey { r A } for eg. ISO/IEC key agreement mechanism 2 DA ( Destination Authentication with forced challenge and no message from the prover) implies the verifier does not contain any message of the form APriKey {·} or ApubKey {·}, and asks the prover to compute message BPubKey { A } which it keeps with itself and does not send it back to the verifier for eg. ISO/IEC key transport mechanism 1 IA -IA (Implicit Authentication with no challenge- Implicit Authentication with no challenge): There is no message exchange of the form APriKey {·} or ApubKey {·}, and both entities A and B generate data of the form A: APriKey { B } B: BPriKey { A }, respectively Eg. ISO/IEC key agreement mechanism 1 IA F -IA F (Implicit Authentication with forced challenge- Implicit Authentication with forced challenge) : Both entities A and B exchange random nonce r a and r b to compute A: APriKey { B , r B }, B: BPriKey { A , r A } respectively and no message exchange of the form APriKey {·} or ApubKey {·} takes place. Eg ISO/IEC key agreement mechanism 5, Goss protocol.
IA F -OA S Implicit Authentication with forced challenge-Origin Authentication with self challenge In this protocol the verifier A sends a random nonce, time stamp and the message APriKey {B, TS A } and the prover generates the message BPriKey {r A } its examples include ISO/IEC key agreement mechanism 3, Nyberg-Rueppel key agreement protocol Origin Authentication with forced challenge - Origin Authentication with forced challenge is the class of those types of protocols where the prover gets the random nonce r A from the verifier encrypts in to the form BPriKey { A , r A }, r B and the receiver send the message of the form APriKey {B, r B }, eg ISO/IEC key transport mechanism 5, ASPeCT protocol for UMTS OA F - DA F , NoAck (Origin Authentication with forced challenge – destination authentication with forced challenge and no acknowledgment ) describes the protocols where the random nonce generated at the receiver end and the prover send a data of the form APubKey it may contain a nested encrypted values. ISO/IEC key transport mechanism 4, Beller-Yacobi’ s two-pass protocol
DA F,NoAck -OA S Destination Authentication with forced challenge and no acknowledgment and Origin Authentication with self challenge have just one message exchange, since it is a self challenge it may contain some time stamp. Verifier A sends the message which contains A’s Private key encrypted message embed inside a public key encrypted message of prover B along with its time stamp or B’s Public Key message inside A’s private Key’s message. Eg. ISO/IEC key transport mechanism 2, North American PACS public key AKA protocol. DA F,Ack -OA F Destination Authentication with forced challenge and Acknowledgment and Origin Authentication with forced challenge has the message exchange such that A sends public key encrypted message to B which responds by sending decrypted nonce r A and its own generated random nonce r B . Verifier then sends private decrypted message back to the prover to authenticate himself eg Boyd-Park protocol The last two prototypes namely DA F,NoAck -DA F,NoAck ( Destination Authentication with no acknowledgment- Destination Authentication with no acknowledgment) and DA F,Ack -DA F,Ack ( Destination Authentication with acknowledgment- Destination Authentication with acknowledgment) have similar message exchange i.e. A sending message encrypted as BPubKey {} and B sending a message as APubKey {}, the only difference bieng with the fact that as latter is a prototype with acknowledgment, we have acknowledgments in the form or r A and r B ’s respectively . Eg. SKEME protocol ( DA F,NoAck -DA F,NoAck ) and ISO/IEC key transport mechanism 6, Needham-Schroeder public key protocol ( both for DA F,Ack -DA F,Ack )