SSL Demystified
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The document outlines the SSL handshake process between a client and a server, detailing how public and private keys are used for secure communication. It describes various steps including the generation and exchange of random numbers, the validation of digital certificates, and key exchange methods like Diffie-Hellman and RSA. Additionally, it emphasizes the importance of confidentiality, integrity, and authentication in securing data during transmission.
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The document provides an overview of the Secure Sockets Layer (SSL) protocol, which is used for establishing an encrypted link between a web server and a browser to ensure data privacy and integrity. It details the SSL architecture, the process of SSL communicationincluding server and client authenticationand the various versions of the protocol. Additionally, it explains the steps involved in SSL communication and the importance of using certificates for secure transactions, such as those made on e-commerce websites.Introduction to SSL/TLS
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1) The client connects to a website and the server responds with a certificate and public key.
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This PPT contains notes for taking lecture at diploma level.Data Structures Module 3 Binary Trees Binary Search Trees Tree Traversals AVL...
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International journal of advanced Information technology (IJAIT) is a bi monthly open access peer-
reviewed journal, will act as a major forum for the presentation of innovative ideas, approaches,
developments, and research projects in the area advanced information technology applications and
services. It will also serve to facilitate the exchange of information between researchers and industry
professionals to discuss the latest issues and advancement in the area of advanced IT. Core areas of
advanced IT and multi-disciplinary and its applications will be covered during the conferences.Call For Papers - 17th International Conference on Wireless & Mobile Networks...
Call For Papers - 17th International Conference on Wireless & Mobile Networks...hosseinihamid192023
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17th International Conference on Wireless & Mobile Networks (WiMoNe 2025) will provide
an excellent international forum for sharing knowledge and results in theory, methodology and
applications of Wireless & Mobile computing Environment. Current information age is witnessing
a dramatic use of digital and electronic devices in the workplace and beyond. Wireless, Mobile
Networks & its applications had received a significant and sustained research interest in terms of
designing and deploying large scale and high performance computational applications in real life.
The aim of the conference is to provide a platform to the researchers and practitioners from both
academia as well as industry to meet and share cutting-edge development in the field.Rapid Prototyping for XR: Lecture 6 - AI for Prototyping and Research Directi...
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Multi-proposer consensus protocols let multiple validators propose blocks in parallel, breaking the single-leader throughput bottleneck of classic designs. Yet the modern multi-proposer consensus implementation has grown a lot since HotStuff. THisworkshop will explore the implementation details of recent advances DAG-based approaches like Narwhal and Suis Mysticeti and reveal how implementation details translate to real-world performance gains. We focus on the nitty-gritty: how network communication patterns and data handling affect throughput and latency. New techniques such as Turbine-like block propagation (inspired by Solanas erasure-coded broadcast) and lazy push gossip broadcasting dramatically cut communication overhead. These optimizations arent just theoretical they enable modern blockchains to process over 100,000 transactions per second with finality in mere milliseconds redefining what is possible in decentralized systems.
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For any number of circumstances, obsolescence risk is ever present in the electronics industry. This is especially true for human-to-machine interface hardware, such as keypads, touchscreens, front panels, bezels, etc. This industry is known for its high mix and low-volume builds, critical design requirements, and high costs to requalify hardware. Because of these reasons, many programs will face end-of-life challenges both at the component level as well as at the supplier level.
Redesigns and qualifications can take months or even years, so proactively managing this risk is the best way to deter this. If an LED is obsolete or a switch vendor has gone out of business, there are options to proceed.
In this webinar, we cover options to redesign and reverse engineer legacy keypad and touchscreen designs.
For more information on our HMI solutions, visit https://www.epectec.com/user-interfaces.
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Tally.ERP 9 at a Glance.book, a fully completed guidance to learn tally erp 9.0Call For Papers - 17th International Conference on Wireless & Mobile Networks...
Call For Papers - 17th International Conference on Wireless & Mobile Networks...hosseinihamid192023
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SSL Demystified
- 2. C L I E N T S E R V E R Client Public Key Client Private Key Server Public Key Server Private Key PREVIEW 1. Client has public key and private key in browser 1. Server has its public key and private key
- 3. C L I E N T S E R V E R Generate Random Number Rc Rc client_hello(crypto info, )Rc 2. Client generates a random number and sends to server with crypto info(SSLv #, cipher suites supported)
- 4. C L I E N T S E R V E R Generate Random Number Rs RcRc Rs Demand Client Certificate Server Certificate (including ) server_hello(crypto info, )Rs 3. Server responds with chosen cipher suite, session ID, another random string and its digital certificate 4. Requesting client certificate that includes list of types of certs supported and names of acceptable CAs
- 5. C L I E N T S E R V E R Check server certificate Rc Rc Rs Rs Client Certificate (including ) Hash of all previous messages signed with 5. Client verifies servers certificate 6. Client sends a hash of all messages signed with + clients digital certificate
- 6. C L I E N T S E R V E R DH-KEY EXCHANGE random random abc xyz random abc random xyz random xyz random abc abc xyz random abcxyz Shared over open channel Shared over open channel Mathematically generates common session key Diffie-Hellman key agreement is not based on encryption and decryption, but instead relies on mathematical functions that enable two parties to generate a shared secret key for exchanging information confidentially online Client generated private key Server generated private key MK 7. Key Exchange
- 7. C L I E N T S E R V E R RSA-KEY EXCHANGE random Shared over open channel RSA key exchange implements exchange of secret keys securely online by encrypting the secret key with the intended recipient's public key drnoam drnoam random MK 7. Key Exchange
- 8. C L I E N T S E R V E R Change to encrypted connection using as KEY MK End SSL Handshake Rc Rc Rs Rs MK MK 8. Client sends finished message encrypted with secret key
- 9. C L I E N T S E R V E R Change to encrypted connection using as KEY MK End SSL Handshake Rc Rc Rs Rs 9. Server sends finished message encrypted with secret key MK MK
- 11. C L I E N T S E R V E R CONFIDENTIALITY During the SSL handshake, the SSL client and SSL server agree on encryption algorithm and a shared secret key to be used for one session only. All messages transmitted between the SSL client and SSL server are encrypted using that algorithm and key, ensuring that the message remains private even if it is intercepted Because SSL uses asymmetric encryption when transporting the shared secret key, there is no key distribution problem with SSL SSL provides data integrity check by calculating the message digest. A message can be digitally signed by a message exit at the sending end of a channel. The digital signature can then be checked by a message exit at the receiving end of a channel to detect whether the message has been deliberately modified. Use of SSL or TLS does ensure data integrity, provided that the CipherSpec in your channel definition uses a hash algorithm. INTEGRITY
- 13. C L I E N T S E R V E R For SERVER authentication, the client uses the servers PUBLIC KEY to ENCRYPT the data that is used to compute the secret key. The server can generate the secret key only if it can decrypt that data with the correct PRIVATE KEY. For CLIENT authentication, the server uses the PUBLIC KEY in the client certificate to VERIFY the data the client sends during of the handshake. The exchange of finished messages that are encrypted with the secret key confirms that authentication is complete. If any of the authentication steps fail, the handshake fails and the session terminates. AUTHENTICATION The digital signature is checked The certificate chain is checked The expiry and activation dates and the validity period are checked The revocation status of the certificate is checked CERTIFICATE VERIFICATION
- 15. The End