cryptography.pptx
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This document discusses non-repudiation and Pretty Good Privacy (PGP). It defines non-repudiation as a situation where an author cannot deny authorship or validity of a contract. In digital security, non-repudiation provides proof of integrity, origin and authentication of data. Trusted third parties like forensic analysts and notaries can verify identities and signatures. PGP was invented by Phil Zimmermann and uses digital signatures and encryption to provide privacy, integrity, authentication and non-repudiation for email. It uses hashing, secret keys and public-private key pairs in its operations.
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digital-signature-8736-rPgxHVG.pptx
This document discusses digital signatures, including their history, purpose, and how they work. Digital signatures provide authentication, integrity, and non-repudiation for electronic documents by using public key cryptography. A digital signature is generated by encrypting a hash of a message with the sender's private key. Anyone can verify the signature using the sender's public key, ensuring the message came from that sender and was not altered. Challenges include keeping private keys secure and the processing time required, but digital signatures enable secure e-commerce and e-governance applications.
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Digital signatures provide a secure way to authenticate digital documents and messages. They use asymmetric encryption and digital certificates to verify identity and ensure document integrity. A digital signature is created by encrypting a hash of the message with the sender's private key, and can be verified by decrypting the signature with the sender's public key. This allows the recipient to confirm the identity of the sender and that the message content was not altered after signature. Digital signatures have legal standing and provide benefits like authentication, non-repudiation, and ensuring documents have not been tampered with.
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Digital_signature_ppt.pptx
Disgital Signature Algorithm which is used Hash value of a message when encrypted with the private key of a person is his digital signature on that e-Document.
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csedigitalsignatureppt-170420041737.pdf
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population expansion, and economic progress, the effects on natural ecosystems are becoming
more evident. A crucial element of this impact is the alteration of vegetation cover, which plays a
significant role in maintaining the ecological equilibrium of our planet.Land serves as the foundation for all human activities and provides the necessary materials for
these activities. As the most crucial natural resource, its utilization by humans results in different
'Land uses,' which are determined by both human activities and the physical characteristics of the
land.
The utilization of land is impacted by human needs and environmental factors. In countries
like India, rapid population growth and the emphasis on extensive resource exploitation can lead
to significant land degradation, adversely affecting the region's land cover.
Therefore, human intervention has significantly influenced land use patterns over many
centuries, evolving its structure over time and space. In the present era, these changes have
accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
diverse human activities.
Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
these patterns indicate shifts in economic and social conditions. Monitoring such changes with the
help of Advanced technologies like Remote Sensing and Geographic Information Systems is
crucial for coordinated efforts across different administrative levels. Advanced technologies like
Remote Sensing and Geographic Information Systems
9
Changes in vegetation cover refer to variations in the distribution, composition, and overall
structure of plant communities across different temporal and spatial scales. These changes can
occur natural.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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- 1. NADAR SARASWATHI COLLEGE OF ARTS AND SCIENCE,THENI. DEPARTMENT OF COMPUTER SCIENCE. NON REPUDIATION AND PRETTY GOOD PRIVACY BY: B.POORANI I-MCS(CS)
- 2. NON REPUDIATION non-repudiation is a situation where a statement's author cannot successfully dispute its authorship or the validity of an associated contract. The term is often seen in a legal setting when the authenticity of a signature is being challenged. In such an instance, the authenticity is being "repudiated".
- 3. In digital security A service that provides proof of the integrity and origin of data . An authentication that can be said to be genuine with high confidence. An authentication that the data is available under specific circumstances, or for a period of time: data availability
- 4. Trusted third parties. The two most common TTPs are forensic analysts and notaries. A forensic analyst specializing in handwriting can compare some signature to a known valid signature and assess its legitimacy. A notary is a witness who verifies an individual's identity by checking other credentials and affixing their certification that the person signing is who they claim to be. A notary provides the extra benefit of maintaining independent logs of their transactions, complete with the types of credentials checked, and another signature that can be verified by the forensic analyst.
- 5. Pretty good privacy: PGP stands for Pretty Good Privacy (PGP) which is invented by Phil Zimmermann. PGP was designed to provide all four aspects of security, i.e., privacy, integrity, authentication, and non-repudiation in the sending of email. PGP uses a digital signature (a combination of hashing and public key encryption) to provide integrity, authentication, and non-repudiation. PGP uses a combination of secret key encryption and public key encryption to provide privacy. Therefore, we can say that the digital signature uses one hash function, one secret key, and two private-public key pairs. PGP is an open source and freely available software package for email security. PGP provides authentication through the use of Digital Signature.
- 8. THANK YOU