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Debraj Karmakar is pursuing a B.Tech in Computer Science and Engineering and discusses the importance of cybersecurity in protecting networks and devices. Key principles include confidentiality, integrity, and availability, which safeguard against cybercrime and unauthorized access. The document also outlines various roles within cybersecurity, including ethical hackers and security analysts.Suricata
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This document discusses various types of cyber crimes including crimes against individuals, property, organizations and society. It describes causes of cyber crimes such as passion of youngsters, desire for recognition or money, and security issues. It then focuses on specific cyber crimes like unauthorized access, viruses, trojans, hacking, social engineering techniques like phishing and baiting, and spam. Common hacking tools are also outlined. Throughout, methods of prevention and popular examples are provided for each topic.Digital signature(Cryptography)
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This document provides an overview of cryptography and its applications. It discusses the history of cryptography beginning in ancient Egypt. It defines basic cryptography terminology like plaintext, ciphertext, cipher, key, encryption, decryption, cryptography, and cryptanalysis. It describes classical ciphers like the Caesar cipher and substitution ciphers. It also discusses cryptanalysis techniques, transposition ciphers, modern symmetric ciphers, public key cryptography including RSA, key distribution methods, and hybrid encryption.Cryptography ppt
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Cryptographic hashing functions are used to map data of arbitrary size to fixed-size values to facilitate data storage and transmission. They have properties such as preimage and collision resistance to make them unpredictable and secure. Popular cryptographic hashing algorithms include MD5, SHA-1, and SHA-2. Hashing functions are used for applications like digital signatures, password security, and message authentication. Techniques like salting hashes make them more resistant to brute force and pre-computed rainbow table attacks.Dijkstra algorithm
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The document discusses finding the shortest route from Kota Bharu to Kuala Koh National Park in Kelantan, Malaysia using Dijkstra's parallel graph algorithm. The route passes through several places including Stong Mountain, Cintawasa Mountain, and Berangkat Mountain. Dijkstra's algorithm works by assigning infinite distances at first, then updating distances through visited neighbors until reaching the destination. The shortest path found is A to C to B to D to E, representing Kota Bharu to Stong Mountain to Cintawasa Mountain to Berangkat Mountain to Kuala Koh National Park.Diffie_Hellman-Merkle Key Exchange
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The document discusses the Diffie-Hellman-Merkle key exchange, highlighting the contributions of Whitfield Diffie, Martin Hellman, and Ralph Merkle. It explains the process of securely exchanging secret keys using modular arithmetic and the concept of Merkle puzzles, while also addressing vulnerabilities such as man-in-the-middle attacks and the importance of public key cryptography for authentication. The document emphasizes the continuous need for advancements in cryptographic methods to counter evolving decryption techniques.All about Hacking
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The presentation by Dr. Naim R. Kidwai discusses the critical role of cryptography in protecting information in the digital era, emphasizing concepts such as encryption, decryption, and key management. It highlights the essential goals of cryptography including authentication, confidentiality, data integrity, and non-repudiation, and provides examples of historical ciphers and modern techniques like symmetric and asymmetric key cryptography. Additionally, the document addresses common threats to information security and the importance of key size in determining the security of encryption methods.Cyber Crime and Security Presentation
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The document discusses the rapid growth of the internet in India and the emergence of cyber crime as a significant issue, detailing various types of cyber crimes such as hacking, identity theft, and cyber terrorism. It highlights the vulnerabilities associated with online activities and provides case studies, statistics, and prevention methods to combat cyber threats. The document emphasizes the importance of internet security and the measures individuals can take to protect themselves from cyber attacks.Cyber Terrorism
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Cyber terrorism uses digital technology and computer networks to threaten or attack victims. There are three types of cyber terrorism attacks ranging from simple hacking to complex coordinated attacks. Examples include ATM failures, power outages, and airline crashes. While cyber terrorism allows anonymity and worldwide reach, protecting against it requires unique passwords, monitoring systems for defects, and avoiding suspicious websites or emails. As technology increasingly underpins society, cyber attacks pose a serious national security risk.Difference between Cyber and digital Forensic.pptx
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Cyber forensics deals with the investigation and analysis of computer systems involved in cyber crimes, while digital forensics involves any digital device for the purpose of a legal investigation. Cyber forensics is a branch of digital forensics that focuses specifically on computer systems and networks. Both fields involve the identification, collection, preservation, analysis and presentation of digital evidence from various devices in relation to crimes. Proper collection and preservation of digital evidence requires following protocols like photographing devices, noting identifying details, removing power sources safely if destructive devices are suspected, and securely storing devices to prevent damage prior to analysis.Cyber crime types
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This document discusses various types of cyber crimes including crimes against individuals, property, organizations and society. It describes causes of cyber crimes such as passion of youngsters, desire for recognition or money, and security issues. It then focuses on specific cyber crimes like unauthorized access, viruses, trojans, hacking, social engineering techniques like phishing and baiting, and spam. Common hacking tools are also outlined. Throughout, methods of prevention and popular examples are provided for each topic.Digital signature(Cryptography)
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The document provides an overview of digital signatures, including their history, theory, workings, and importance. Digital signatures were first proposed in 1976 and use public key cryptography to validate the authenticity and integrity of electronic documents and messages. They work by encrypting a hash of the message with the sender's private key, which can later be decrypted and verified by the recipient using the sender's public key. This allows the recipient to confirm the message has not been tampered with and was signed by the proper sender. Digital signatures provide security benefits like non-repudiation and are legally recognized in many countries and applications.Cryptography and applications
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This document provides an overview of cryptography and its applications. It discusses the history of cryptography beginning in ancient Egypt. It defines basic cryptography terminology like plaintext, ciphertext, cipher, key, encryption, decryption, cryptography, and cryptanalysis. It describes classical ciphers like the Caesar cipher and substitution ciphers. It also discusses cryptanalysis techniques, transposition ciphers, modern symmetric ciphers, public key cryptography including RSA, key distribution methods, and hybrid encryption.Cryptography ppt
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This document discusses cryptography, which is the science of secure communication. It covers the basics of cryptography including its objectives, components, terminology, types, and advantages. Specifically, it explains how cryptography ensures confidentiality, integrity, and authentication of information. It also discusses symmetric and asymmetric encryption methods. Symmetric encryption uses a shared key for encryption and decryption while asymmetric encryption uses public and private key pairs. The document highlights how cryptography provides secure communication methods and is important for both military and everyday applications.Holistic technologies
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This document discusses competence in professional ethics and case studies. It emphasizes developing ethical competence through understanding human values like trust, respect and cooperation. It discusses how professions can fulfill the comprehensive human goal by contributing to livelihoods and society. However, today many unethical practices exist due to a focus on profit maximization over service, which creates contradictions. The only resolution is developing right understanding and ethical competence through values education.More from Xu jiakon (20)
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福建省数学高考改革与高中数学教育的过去与现在 厦门讲稿Xu jiakon
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本报告探讨了福建省数学高考改革的历程，分为叁个阶段，从1978年起的改革试验期，到1999年后的分省自行命题。此外，报告分析了高中数学教育中存在的主要问题，包括忽视数学本质与应试训练的倾向，以及教师对新课程标准的适应性不足。最后，研究中心在命题研究方面取得了一系列成果，尝试解决当前数学教育面临的挑战。数学教育文化与数学英才教育
数学教育文化与数学英才教育Xu jiakon
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The document discusses mathematics education culture in China and elite mathematics education. It outlines different views on mathematics and mathematics education between Eastern and Western cultures. In the East, mathematics education focuses more on practical applications and rote learning, while the West emphasizes relationships, rational thought, and a dialogue with the universe. The document argues for an elite mathematics education system in China that provides high-quality learning opportunities for all students and cultivates an appreciation for mathematics.2009年中国数学会学术年会与会者通讯录
2009年中国数学会学术年会与会者通讯录Xu jiakon
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该文档包含多个来自不同国家和地区的数学和计算机科学研究机构的联系信息。每个条目提供了相关人员的姓名、机构、电子邮件地址等基本信息。文档显示了学术界的广泛合作与交流。报告摘要
报告摘要Xu jiakon
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This document contains 73 presentations listed by title and page number. The presentations cover a wide range of mathematical topics including liquid crystals, infrastructure planning, nonholonomic dynamics, network theory, internet information retrieval, algebraic surfaces, edge-transitive graphs, splines, the index theorem, elliptic curves, projective complexes, Kac modules, Lie superalgebras, semilattices, Lie algebras, K2, the Schur lemma, Hopf algebras, Legendrian links, balanced metrics, affine hypersurfaces, cubic forms, Heegaard splittings, variational problems in geometry, equivariant manifolds, Hamilton-Jacobi theory, noncommutative index theory, local Gromov-Wit吉林大学讲座信息网前卫南校区宣讲课件
吉林大学讲座信息网前卫南校区宣讲课件Xu jiakon
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吉林大学讲座信息网旨在为学生提供丰富的学生活动、讲座、考试培训和社团信息。网站整合了各类讲座时间、地点，方便学生高效安排日程，同时也提供信息提交和评价功能。团队鼓励师生参与，共同维护和发展这个为学生服务的平台。我的数学之路(丘成桐)
我的数学之路(丘成桐)Xu jiakon
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本文件讲述了丘成桐教授的成长经历与学术追求，从艰苦的儿童时期到对中国古典文学和数学的热爱，以及父亲的教育对他思想的深远影响。他反思了教育的意义，强调了兴趣、毅力以及良师益友在学术道路中的重要性。同时，他分享了在数学和历史学习中的宝贵经验，表现出对知识的追求和对生活的思考。Ad