Public Key Cryptography - Slides
Introduction to the basic concepts associated with public key cryptography. DNA Computers Applications Cryptography applied cryptography,cryptography,cryptography algorithms,cryptography and network security,cryptography ciphers cryptography encryption,cryptography stinson,cryptography theory and practice,practical cryptography,public key cryptography,quantum cryptography,secure cryptography- Slides. Cryptography.ppt - Download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Concept of public-key cryptography evolved from an attempt to attack two of the most difficult problems associated with the conventional encryption. Put (lock, locking key) in the public domain, i.e., in a post office. Anyone who wants to send me a letter confidentially can do the following: Buy a strong box Slideshow 1332050. Each entity has 2 keys: private key (a secret) public key (well known). Public-Key, Public-Key Authentication and Secrecy, Public-Key Applications, Public-Key Requirements, Security of Public Key Schemes, RSA Public Key Encryption, Finding d and e, RSA Key Construction: Example, Exponentiation, Optimizing Private Key Operations, RSA Issues, Progress in Factoring, Optimal Asymmetric Encryption. The number of keys is n(n-1)/2 for n parties. Public Key Cryptography David Brumley firstname.lastname@example.org Carnegie Mellon University Credits: Many slides from Dan Boneh’sJune 2012 Coursera crypto class, which is awesome! Title: Public Key Cryptography Author: cding Last modified by: cding Created Date: 9/29/2003 3:27:35 AM Document presentation format: On-screen Show. Public Key Cryptography Also known as Asymmetric Key Cryptography Two Different Keys One is …. If the reverse operation can be done easily, that is if the private key is obtained from the public key and other public data, then the public key algorithm for the particular key is cracked. Fifth Edition. by William Stallings Lecture slides …. Cryptography.ppt 1. KUSUM SHARMA M.Sc S/W 2.. ASYMMETRIC KEY CRYPTOGRAPHY SYMMETRIC KEY CRYPTOGRAPHY 8.. Also known as public key cryptography. Obtaining of private key from the public key is a reverse operation.
Public Key Cryptography ( Public & Private Keys) Public Key is known to all authorized users, but the private key is known to one person its owner. Uses RSA ( Rivest, Shamir & Adelman algorithm) Public Keyreceiver Original Message Sender Private Keysender Digital Signature Original Message Sender Scrambled Message Scrambled Message Private Keyreceiver Scrambled Message Original …. The Idea of Public Key Cryptography. Download Cryptography PowerPoint templates (ppt) and backgrounds for your presentations. PowerPoint Templates - Are you a PowerPoint presenter looking to impress your audience with professional layouts. Well, you’ve come to the right place! It uses public key encryption techniques to protect the confidentiality, integrity, authenticity and non-repudiation of data. (PKI) is a uniform way for different organizations to identify people through their digital certificates containing public keys. Digital Signature • Public key cryptography is also used to provide digital signatures. Cryptography and Network Security Chapter 9 Fifth Edition by William Stallings Lecture slides by Lawrie Brown (with edits by RHB) Chapter 9 – Public Key Cryptography and RSA Every Egyptian received two names, which were known respectively as the true name and the good name, or the great name and the little name; and while the good or little name was made public, the true or great name. Computer and Network Security by Avi Kak Lecture12 12.1: PUBLIC-KEY CRYPTOGRAPHY •Public-key cryptography is also known as asymmetric-key cryp-tography, to distinguish it from the symmetric-key cryptography. Netprog: Cryptgraphy 3 Public Key Cryptography(a.k.a. asymmetric cryptography) Relatively new field - 1975 (as far as we know, the NSA is not talking). Public Key Encryption, Public Key Encryption Example, Symmetric vs. Introduction Key-Distribution Diffie-Hellman Exchange Digital signatures In addition to the public-key encryption, DieandHellman introduced a public-key analogue to message authentication codes. Public Key Cryptography Two keys Sender uses recipient’s public key to encrypt Recipient uses private key to decrypt Based on “trap door one way function” “One way” means easy to compute in one direction, but hard to compute in other direction Example: Given p and q, product N = pq easy to compute, but given N, it’s hard to find p. Public-Key Cryptography probably most significant advance in the 3000 year history of cryptography uses two keys – a public & a private key asymmetric since parties are not equal uses clever application of number theoretic concepts to function complements rather than replaces private key crypto. In public key cryptography the public key is calculated using private key on the forward operation of the one-way function. William Stallings, Cryptography and Network Security 5/e PPT. Presentation Summary: Cryptography and Network SecurityChapter 5. Cryptography and Network Security Chapter 14 Fifth Edition by William Stallings Lecture slides by Lawrie Brown * Chapter 14 summary. * An further improvement, first suggested by Kohnfelder, is to use certificates, which can be used to exchange keys without contacting a public-key authority, in a way that is as reliable as if the keys were. Lecture slides by Lawrie Brown Chapter 15 –User Authentication We cannot enter into alliance with neighboring princes until we are acquainted with their designs. —The Art of War, Sun Tzu User Authentication fundamental security building block basis of access control & user accountability is the process of verifying an identity claimed by or for a system entity has two steps: identification. Torrent Name Size; example-laidback-luke-natural-disaster-laidback-luke-vs-example.mp3 (4.19 MB ) Quantum Attacks on public-key Cryptosystems (3.37 MB ). The private key cryptography is used for both the encryption and decryption, both the receiver and transmitter should know this key and it is mostly used in sending the quick messages. The public key is a key which can be given to everyone and an example of it is an email address of a person. The public key is used to send the messages secretly. Slide 5-35.Insight on Technology: Advances in Quantum Cryptography May Lead to the Unbreakable Key Existing encryption systems are subject to failure as computers become more powerful Scientists at Northwestern University have developed a high-speed quantum cryptography method Uses lasers and optical technology and a form of secret (symmetric) key encryption Message is encoded using. Title: Public Key Cryptography and Cryptographic Hashes Last modified by: David Nicol Created Date: 2/18/2010 3:18:19 PM Document presentation format. No efficient algorithm is know for finding the prime factors of a number. Amazing PPT layouts having encryption - key on a sheet with backdrop and a light gray colored foreground. The key is shared by both the sender and the receiver. Secret Key Cryptography Key distribution problem How to share the secret key. E-commerceLecture 20 Slide 1-1 Technology Solutions Protecting Int. Secure Two-party Computation [Yao86] (Constant Round) MPC [BMR90, IK00] Parallel Cryptography [AIK05] One-time Programs [GKR08].
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Introduction to the basic concepts associated with public key cryptography. DNA Computers Applications Cryptography applied cryptography,cryptography,cryptography algorithms,cryptography and network security,cryptography ciphers cryptography encryption,cryptography stinson,cryptography theory and practice,practical cryptography,public key cryptography,quantum cryptography,secure cryptography- Slides. Cryptography.ppt - Download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt)
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