Ed25519 cryptography - PowerPoint PPT Presentation


Cryptographic Reductions and Learning in Computational Complexity

This lecture explores the connection between computational complexity and cryptography, focusing on topics like pseudorandom functions, public-key cryptography, and learning from Gaussians. It delves into the implications of cryptographic reductions, lower bounds for learning MLPs, and the existence

0 views • 22 slides


Cryptography,.Quantum-safe Cryptography& Quantum Cryptography

Dive into the world of cryptography, quantum-safe cryptography, and quantum technology as discussed in Maurizio D. Cina's presentation at CYBERDAYS in Prato. Topics include current cryptosystems, post-quantum cryptography, quantum key distribution, and future cryptosystems based on quantum algorithm

3 views • 17 slides



Ascon: The Lightweight Cryptography Standard for IoT

The November 2023 document IEEE 802.11-23/2069r2 discusses the importance of secure data storage and communication in IoT devices due to the increasing number of connected devices and potential security threats. It introduces Ascon as a lightweight cryptography standard selected by NIST for protecti

0 views • 26 slides


Introduction to Cryptography: Basics, Terminology, and Significance

Cryptography is the study of techniques used for secure communication, involving creating programs to protect private messages. This overview covers the history, terminology, and significance of cryptography. Explore the basics, cyphers, and the importance of encryption in safeguarding sensitive dat

3 views • 15 slides


Lightweight Cryptography Standard for IoT - November 2023 IEEE Presentation

IEEE 802.11-23/2069r1 presents Ascon as a lightweight cryptography standard for IoT devices. With the increasing number of connected devices, protecting data on IoT devices becomes crucial. NIST selects Ascon to safeguard small devices, offering authenticated encryption and hashing efficiently. Asco

2 views • 26 slides


Steganography: Hiding Secrets in Plain Sight

Steganography, the art and science of concealing secret messages in such a way that no one suspects their existence, differs from cryptography in its goal of avoiding suspicion rather than rendering the message unreadable. This method involves hiding messages within seemingly innocuous data, such as

2 views • 76 slides


The Fascinating World of Cryptography

Cryptography is the art of concealing messages to ensure information security, involving processes like encryption and cryptanalysis. Explore the history of cryptography from ancient civilizations to modern-day techniques like steganography. Witness the evolution of coding methods and machines that

0 views • 14 slides


Introduction to RSA Cryptography and Public Key Encryption

Explore the fundamentals of RSA cryptography and public key encryption, including shift ciphers and affine ciphers. Learn how public key encryption solves the challenges of implementing secure communication on a large scale. Discover the key components of RSA, its development history, and the mathem

2 views • 37 slides


Formal Verification of Quantum Cryptography by Dominique Unruh

Explore the significance of formal verification in quantum cryptography as discussed by Dominique Unruh from the University of Tartu. Understand the challenges, motivations, and current work in verifying quantum crypto protocols, and the potential impact of quantum computers on common encryption met

0 views • 25 slides


Key Management and Distribution Techniques in Cryptography

In the realm of cryptography, effective key management and distribution are crucial for secure data exchange. This involves methods such as symmetric key distribution using symmetric or asymmetric encryption, as well as the distribution of public keys. The process typically includes establishing uni

1 views • 27 slides


Introduction to Public Key Cryptography

Public key cryptography, exemplified by algorithms like Diffie-Hellman and RSA, revolutionizes secure communication by allowing users to encrypt messages with public keys known to all and decrypt them with private keys known only to the intended recipient. This advanced encryption method ensures sec

1 views • 44 slides


Overview of Cryptography Techniques and Algorithms

Exploring the diverse realm of cryptography, this chapter delves into both nonmathematical and mathematical encryption methods. It covers substitution and transposition ciphers, steganography, hybrid systems, hashing, symmetric algorithms like DES and AES, as well as asymmetric algorithms utilizing

7 views • 21 slides


Evolution of Cryptography: From Ancient Techniques to Modern Security Mechanisms

Explore the evolution of cryptography from ancient techniques like the Caesar Cipher to modern security mechanisms like SSL, SSH, and IPSec. Learn how cryptography plays a crucial role in ensuring confidentiality, integrity, authentication, non-repudiation, and availability in network security. Disc

1 views • 62 slides


Introduction to Cryptography, Cryptanalysis, and Cryptology

Cryptography involves protecting information by encrypting and decrypting data, while cryptanalysis focuses on breaking encryption methods to access hidden messages. Cryptology encompasses both cryptography and cryptanalysis. Encryption encodes messages to prevent unauthorized access, while decrypti

0 views • 12 slides


Exploring Cloud Cryptography for Secure Data Processing

Cloud cryptography is a vital aspect of data security in cloud computing, allowing data to be encrypted and processed securely. This presentation delves into the concepts of cloud cryptography, homomorphic encryption, and the two types of homomorphic encryption - hybrid and partial. It discusses the

8 views • 17 slides


Understanding Cryptography in the Digital World

Uncover the world of cryptography with a focus on digital advancements, emphasizing the importance of rules in society. Delve into the history of secret communication, code design, and breaking. Explore the rise of cryptocurrencies, digital banking, and blockchain technologies, such as Bitcoin and E

0 views • 12 slides


Exploring the World of Quantum Money and Cryptography

Delve into the realm of quantum money, computation, and cryptography, understanding the intricacies of semi-quantum money, consensus problems, post-quantum cryptography, and unique concepts like certifiable randomness and tokenized digital signatures.

6 views • 30 slides


Understanding the Importance of Web Cryptography API and Its Application

The Web Cryptography API is a vital tool that enables end-to-end encryption and authentication in browsers. This API allows secure handling of cryptographic algorithms, providing access to native crypto libraries. While JavaScript is faster, the native code is more secure and battle-tested, making i

0 views • 111 slides


Overview of Basic Security Properties and Cryptography Fundamentals

This content provides an introduction to basic security properties such as confidentiality, authenticity, integrity, availability, non-repudiation, and access control. It also covers the fundamentals of cryptography, including symmetric and asymmetric encryption, public-key cryptography, and the imp

0 views • 41 slides


Introduction to Cryptography: The Science of Secure Communication

Cryptography is the study of methods for sending and receiving secret messages securely. This lecture explores the application of number theory in computer science, focusing on the design of cryptosystems like public key cryptography and the RSA cryptosystem. The goal of cryptography is to ensure th

0 views • 53 slides


Post-Quantum Cryptography Security Proofs and Models Overview

Explore the various aspects of post-quantum cryptography security, including evaluation criteria, building public key cryptography (PKC) systems, security proofs, digital signatures, and reduction problems. Dive into topics such as performance, cryptanalysis, provable security, standard models, exis

0 views • 42 slides


Understanding Public-Key Cryptography and Its Applications

Public-Key Cryptography revolutionized secure communication by introducing the concept of using separate keys for encryption and decryption. Initially explored by researchers like Diffie, Hellman, and Merkle in the 70s, it addressed key distribution challenges faced by symmetric cryptography. This m

0 views • 34 slides


Foundations of Cryptography: MIT Course Overview and Key Concepts

Explore the MIT course "Foundations of Cryptography" offering insights on cryptography, key themes like adversarial thinking and computational hardness, historical context, and the significance of security proofs via reductions. Learn about the course staff, topics covered, and intellectual origins

1 views • 33 slides


Exploring Post-Quantum Cryptography and Constructive Reductions

Delve into the realm of post-quantum cryptography through an insightful journey of constructive reductions, rethinking cryptography assumptions, and the relationship between classical and post-quantum regimes. Discover the challenges, advancements, and goals in the quest for durable cryptographic al

1 views • 21 slides


Understanding Cryptography: Basic Concepts in Number Theory and Divisibility

This text delves into the fundamental concepts of number theory, divisibility, and finite fields essential for understanding cryptography. It covers topics such as divisibility, properties of divisibility, the division algorithm, the Euclidean algorithm for determining the greatest common divisor, a

0 views • 35 slides


Key Distribution and Management in Cryptography

This presentation discusses key distribution and management in cryptography, covering symmetric and asymmetric key cryptography, methods for sharing symmetric and public keys, as well as key distribution techniques such as manual delivery, initial key distributions, and the use of trusted third part

0 views • 30 slides


Exploring Public-Key Cryptography and Ancient Mathematical Techniques

Delve into the fascinating world of public-key cryptography, where the convergence of prime numbers and inverse functions plays a pivotal role in ensuring secure communication. From the history of math to contemporary applications, discover how encryption and decryption transform messages to keep th

0 views • 21 slides


Understanding Public Key Cryptography in Network Security

Explore the concepts of public key cryptography, key distribution challenges, solutions to secret key schemes, and the importance of secure communication in network security. Learn about cryptology, cryptography, cryptanalysis, block ciphers, stream ciphers, and more in this informative content.

0 views • 21 slides


Overview of Public-Key Cryptography and Knapsack Problem in Cryptology

This lecture delves into the realm of public-key cryptography, including the Knapsack one-way function and the Merkle-Hellman Crypto System. It explores historical perspectives, the concepts of OWFs, Elliptic Curve Cryptography, and introduces new algebra using additive groups over Elliptic Curves.

0 views • 16 slides


Efficient Verified Cryptography in F* by Jean-Karim Zinzindohou

Explore the importance of cryptography verification in F* through Jean-Karim Zinzindohou's joint work with Karthik Bhargavan. Discover the significance of verifying crypto, static guarantees provided, and examples like elliptic curve cryptography. Delve into F* as a rich ML-like language for secure

0 views • 38 slides


Cache Attack on BLISS Lattice-Based Signature Scheme

Public-key cryptography, including the BLISS lattice-based signature scheme, is pervasive in digital security, from code signing to online communication. The looming threat of scalable quantum computers has led to the development of post-quantum cryptography, such as lattice-based cryptography, whic

0 views • 13 slides


Lightweight Cryptography: Key-Reduced Variants and Beyond-Birthday-Bound Security

Lightweight cryptography has emerged as a hot research topic in the past two decades, with over 60 ciphers proposed. This includes examples like PRESENT, GIFT, SIMON/SPECK, and more. Authenticated encryption through CAESAR and NIST LWC plays a vital role, with ASCON and ACORN leading the lightweight

0 views • 25 slides


Cryptographic Center in Novosibirsk: Advancements in Cryptography and Research

The Cryptographic Center in Novosibirsk, established in 2011, focuses on advancing cryptography through research, education, and international collaborations. With a team of researchers and students, the center explores various aspects of cryptography, including cryptographic Boolean functions, ciph

0 views • 33 slides


Key Exchange and Public-Key Cryptography Overview

Explore the challenges of key management, the use of trusted third parties in generating shared keys, the limitations of toy protocols in secure key exchange, and the evolution of public-key cryptography techniques like Merkle Puzzles, Diffie-Hellman, and RSA. Learn how to achieve secure key exchang

0 views • 36 slides


Post-Quantum Cryptography: Safeguarding Secrets in the Digital Age

Delve into the realm of post-quantum cryptography and learn about the evolving landscape of secure communication. Explore topics such as Supersingular Isogeny Graphs, Ring-Learning With Errors, and the significance of key exchange in maintaining confidentiality. Discover the foundations of public ke

0 views • 39 slides


Exploring Unclonable Cryptography: Definitions and Limitations

Delve into the world of unclonable cryptography, understanding new definitions, constructions, and limitations. Discover the unique properties that set unclonable encryption apart from classical cryptography and explore its practical applications.

0 views • 16 slides


Evaluation of Ed25519 Cryptography Performance in DNSSEC Validation

Edwards Curve Cryptography, specifically the Ed25519 algorithm, offers faster performance and high crypto density compared to other algorithms. This evaluation study compares key sizes, processing times, and validation support for Ed25519, ECDSA P-256, RSA-2048, and RSA-4096 in DNSSEC validation sce

0 views • 19 slides


Crack the Code: The Fascinating World of Cryptography

Discover the intriguing world of cryptography through a journey into the history and methods of code-making and code-breaking. Uncover the importance of codes in everyday life, from book ISBNs to encrypted internet data, and learn about classic techniques like Caesar shifts. Test your skills by deco

0 views • 4 slides


Introduction to Lattice-Based Cryptography and Linear Equations Solving

Explore the fundamentals of lattice-based cryptography and the significance of solving linear equations in cryptography. Learn about the exponential hardness and quantum resistance of lattice-based crypto, as well as the challenges and techniques involved in solving linear equations with various str

2 views • 29 slides


New Directions in Cryptography: Harta Dwijaksara, Yi Jae Park

Explore the world of cryptography through this comprehensive guide covering topics such as conventional cryptography, public key cryptography, one-way authentication, trap doors, computational complexity, and more. Learn about the importance of privacy in communications and the key principles behind

0 views • 20 slides