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Digital Signature - Asymmetric Key , Why used for Authentication & Non Repudiation (Hindi)
 
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Digital Signature - Asymmetric Key Cryptography, Why used for Authentication and Non Repudiation (Hindi) Keywords: Digital Signature Asymmetric Encryption Authentication Non Repudiation
Digital Signatures
 
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This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459
Views: 48562 Udacity
NETWORK SECURITY - PUBLIC KEY DISTRIBUTION
 
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There are four ways to distribute the public keys among the users. 1) Public Announcement 2) Public Key Directory 3) Public Key Authority 4) Certificate Authority
Nonrepudiation — No denying it!!
 
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Preventing forgery, or fictitious claims of forgery, is an important task when securing TCP/IP communications. This is usually referred to as non-repudiation. Non-repudiation deals with the integrity of the data and the legitimacy of the sender. More at: http://haimit.com/nonrepudation PLAYLIST: Security/Malware/Attacks https://www.youtube.com/playlist?list=PLXp4credUt6QjvITFH5E0vqzwEZYp-KjZ SUBSCRIBE TO THE CHANNEL: http://www.youtube.com/c/HaimitRyanToolsie WEBSITE: www.HaimIT.com FOLLOW: Google plus: https://plus.google.com/+HaimitRyanToolsie/posts Twitter: https://twitter.com/haim_it
Non-Repudiation - CompTIA Security+ SY0-401: 6.1
 
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Security+ Training Course Index: http://professormesser.link/sy0401 Professor Messer’s Course Notes: http://professormesser.link/sy0401cn Frequently Asked Questions: http://professormesser.link/faq See my entire index of CompTIA Security+ videos at http://www.FreeSecurityPlus.com - - - - - Our encryption technologies not only provide a secure channel of communication, but they can also prove that the data we’re receiving has not been changed between endpoints. In this video, you’ll learn about non-repudiation and how digital signatures can ensure the integrity and authenticity of our data. - - - - - Download entire video course: http://professormesser.link/401adyt Get the course on MP3 audio: http://professormesser.link/401vdyt Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 28263 Professor Messer
Why digital certificate?
 
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Digital Signature: https://www.youtube.com/watch?v=TmA2QWSLSPg&t=2s Digital signature is used for authentication, non-repudiation and data integrity, but there is one weakness of digital signature alone: man-in-the-middle attack. Digital certificates are electronic credentials issued by a trusted third party. A digital certificate not only verifies the identity of the owner, but also verifies that the owner owns the public key. In this video, I will demonstrate why digital signature has weakness and how digital certificate comes in place to make sure digitally signed document must come originally from the claimed sender. Advanced Cryptography: https://www.youtube.com/watch?v=TmA2QWSLSPg&list=PLSNNzog5eydtwsdT__t5WtRgvpfMzpTc7 Playlist: Basic Cryptography https://www.youtube.com/watch?v=vk3py9M2IfE&list=PLSNNzog5eyduN6o4e6AKFHekbH5-37BdV Please leave comments, questions and please subscribe! Sunny Classroom
Views: 25577 Sunny Classroom
Non Repudiation Cryptography and Network Security
 
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Cryptography and Network Security (CNS) - Non Repudiation - Unit 5 (Tamil)
Views: 233 NBTE PREP
A novel authentication framework with conditional privacy-preservation & non-repudiation for VANETS
 
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www.projectkart.in: Our ultimate aim is to solve the issue of authentication with privacy preservation and non-repudiation of vehicles in Vehicular Ad Hoc Networks. A vehicular ad hoc network (VANET) is a technology that employs moving vehicles as nodes in a network to create a mobile network to provide communication among vehicles, nearby fixed road side units (RSUs) and regional trusted authorities (RTAs).As mobile wireless devices and wireless networks become increasingly influential in recent years, the demand for the vehicle-to-vehicle (V2V) communication and the vehicle-to-roadside (V2R) communication increases continuously. In VANETs, the user authentication is a crucial security service for access control in both inter-vehicle and vehicle-roadside communication. In Vehicular Ad hoc Networks (VANETs), authentication is a crucial security service for both inter-vehicle and vehicle roadside communications. On the other hand, vehicles have to be protected from the misuse of their private data and the attacks on their privacy, as well as to be capable of being investigated for accidents or liabilities from non-repudiation. In this project, we investigate the authentication issues with privacy preservation and non-repudiation in VANETs. We propose a novel framework with preservation and repudiation (ACPN) for VANETs. In ACPN, we introduce the public-key cryptography (PKC) to the pseudonym generation, which ensures legitimate third parties to achieve the non-repudiation of vehicles by obtaining vehicles’ real IDs. We show that the proposed ACPN is feasible and adequate to be used efficiently in the VANET environment Modification: In our base work, the researchers considered only anonymous key generation either initial time or RSU handoff time. This type of key generation may lead to leak the privacy information to attackers. So we enhance our base system with so periodic sophisticated anonymous key generation system. our enhancement will improve the privacy security system.
Views: 86 Pantech ProEd
What is Encryption? Public Key Encryption? Explained in Detail
 
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Namaskaar Dosto, is video mein maine aapko encryption ke baare mein bataya hai, aap sabhi ne computer aur internet use karte time Encryption aur decryption ke baare mein jarur suna hoga, usme aapko SSL encrytpion TSL Encryption, Public Key encryption, private key encryption wagereh ke baare mein bhi suna hoga, aur abhi recently whatsapp ne bhi end to end encryption launch kiya hai, toh aise mein hamare man mein bahut se sawaal hai ki aakhir yeh encryption hota kya hai? Encryption hum hamari email pe bhi use karte hai, aur hum online banking karte time bhi encryption ka use karte hai. Mujhe umeed hai ki yeh video dekhne ke baad aap encryption aur decryption ke baare mein sab kuch jaan jayenge, aur saath hi saath public key encryption ke baare mein bhi samajh jayenge. aur aap aaraam se whatsapp ke encryption feature ko bhi use kar payenge. Win Galaxy S7, S7 Edge Here: http://bit.ly/TheMegaGiveaway Share, Support, Subscribe!!! Subscribe: http://bit.ly/1Wfsvt4 Youtube: http://www.youtube.com/c/TechnicalGuruji Twitter: http://www.twitter.com/technicalguruji Facebook: http://www.facebook.com/technicalguruji Instagram: http://instagram.com/technicalguruji Google Plus: https://plus.google.com/+TechnicalGuruji About : Technical Guruji is a YouTube Channel, where you will find technological videos in Hindi, New Video is Posted Everyday :)
Views: 172665 Technical Guruji
Principles of Network Security and Cryptography
 
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In this video tutorial we study the basic principles of Network security and also see the concept of Cryptography by understanding a basic example. Principles of Network Security to be discussed in this video are as follows: Confidentiality Authentication Integrity Non-repudiation Access Control Availability We will also learn the concept of Cryptography in this tutorial. Here's the definition of Cryptography: Cryptography is the art of achieving security by encoding messages to make them non-readable This video is a continuation of the previous video so make sure you check that video as well so that you get to know some basics of Network security. Download the FREE Network Security App on Google Playstore for Android - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials Simple Snippets on Facebook- https://www.facebook.com/simplesnippets/ Simple Snippets on Instagram- https://www.instagram.com/simplesnipp... Simple Snippets Google Plus Page- https://plus.google.com/+SimpleSnippets Simple Snippets email ID- [email protected] Download my FREE Network Security Android App - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials For Classroom Coaching in Mumbai for Programming & other IT/CS Subjects Checkout UpSkill Infotech - https://upskill.tech/ UpSkill is an Ed-Tech Company / Coaching Centre for Information Technology / Computer Science oriented courses and offer coacing for various Degree courses like BSc.IT, BSc.CS, BCA, MSc.IT, MSc.CS, MCA etc. Contact via email /call / FB /Whatsapp for more info email - [email protected] We also Provide Certification courses like - Android Development Web Development Java Developer Course .NET Developer Course Check us out on Social media platforms like Facebook, Instagram, Google etc Facebook page - https://www.facebook.com/upskillinfotech/ Insta page - https://www.instagram.com/upskill_infotech/ Google Maps - https://goo.gl/maps/vjNtZazLzW82
Views: 21619 Simple Snippets
What is PUBLIC-KEY CRYPTOGRAPHY? What does PUBLIC-KEY CRYPTOGRAPHY mean?
 
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What is PUBLIC-KEY CRYPTOGRAPHY? What does PUBLIC-KEY CRYPTOGRAPHY mean? PUBLIC-KEY CRYPTOGRAPHY meaning - PUBLIC-KEY CRYPTOGRAPHY definition - PUBLIC-KEY CRYPTOGRAPHY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Public-key cryptography, or asymmetric cryptography, is any cryptographic system that uses pairs of keys: public keys that may be disseminated widely paired with private keys which are known only to the owner. There are two functions that can be achieved: using a public key to authenticate that a message originated with a holder of the paired private key; or encrypting a message with a public key to ensure that only the holder of the paired private key can decrypt it. In a public-key encryption system, any person can encrypt a message using the public key of the receiver, but such a message can be decrypted only with the receiver's private key. For this to work it must be computationally easy for a user to generate a public and private key-pair to be used for encryption and decryption. The strength of a public-key cryptography system relies on the degree of difficulty (computational impracticality) for a properly generated private key to be determined from its corresponding public key. Security then depends only on keeping the private key private, and the public key may be published without compromising security. Public-key cryptography systems often rely on cryptographic algorithms based on mathematical problems that currently admit no efficient solution—particularly those inherent in certain integer factorization, discrete logarithm, and elliptic curve relationships. Public key algorithms, unlike symmetric key algorithms, do not require a secure channel for the initial exchange of one (or more) secret keys between the parties. Because of the computational complexity of asymmetric encryption, it is usually used only for small blocks of data, typically the transfer of a symmetric encryption key (e.g. a session key). This symmetric key is then used to encrypt the rest of the potentially long message sequence. The symmetric encryption/decryption is based on simpler algorithms and is much faster. Message authentication involves hashing the message to produce a "digest," and encrypting the digest with the private key to produce a digital signature. Thereafter anyone can verify this signature by (1) computing the hash of the message, (2) decrypting the signature with the signer's public key, and (3) comparing the computed digest with the decrypted digest. Equality between the digests confirms the message is unmodified since it was signed, and that the signer, and no one else, intentionally performed the signature operation — presuming the signer's private key has remained secret. The security of such procedure depends on a hash algorithm of such quality that it is computationally impossible to alter or find a substitute message that produces the same digest - but studies have shown that even with the MD5 and SHA-1 algorithms, producing an altered or substitute message is not impossible. The current hashing standard for encryption is SHA-2. The message itself can also be used in place of the digest. Public-key algorithms are fundamental security ingredients in cryptosystems, applications and protocols. They underpin various Internet standards, such as Transport Layer Security (TLS), S/MIME, PGP, and GPG. Some public key algorithms provide key distribution and secrecy (e.g., Diffie–Hellman key exchange), some provide digital signatures (e.g., Digital Signature Algorithm), and some provide both (e.g., RSA). Public-key cryptography finds application in, among others, the information technology security discipline, information security. Information security (IS) is concerned with all aspects of protecting electronic information assets against security threats. Public-key cryptography is used as a method of assuring the confidentiality, authenticity and non-repudiability of electronic communications and data storage.
Views: 765 The Audiopedia
Symmetric vs Asymmetric ( public key )  Cryptography
 
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Lesson 2 of cryptography series (to see all video check cryptography playlist - link given below). cryptography playlist : https://www.youtube.com/watch?v=_Yw7QWbk9Vs&list=PLf8bMP4RWebLVGpUnhji9Olkj1jdXfzFd Subscribe to our new youtube channel also : https://www.youtube.com/channel/UCNx1Gkyy9LfOxDMbcOKuV4g symmetric vs asymmetric ( public key ) cryptography symmetric key vs assymetric key encryption advantages of symmetric key cryptography advantages of assymetric cryptography concept of digital signatures safe and secure communication between systems encrypted communication between systems like us on facebook : https://www.facebook.com/guidetohacking/ #symmetric #asymmetric #public #key #cryptography #encryption
Views: 43572 Hacks And Security
Symmetric Key Encryption and Data Authentication
 
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Dig a little deeper into symmetric key encryption to find out about one of the basic methods of encrypting data and a simple algorithm for checking that the data is authentic.
Views: 524 Vidder, Inc.
19.1 Cryptography
 
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And this is Module19 – Cryptography, Section 19.1 - Introduction to Cryptography Cryptography is study of secure communication that prevent third parties or the public from reading private messages. Cryptography means ‘hidden’ ‘writing’ and its features: – Cryptography is synonymous with encryption, the conversion of readable information to non-readable (Ciphertext) format. Decryption is the reverse process. – Cryptography takes care of data confidentiality, integrity, authentication and non-repudiation. – Applications include e-commerce, payment cards, DRM etc. – Cryptography is a technique of transforming and transmitting confidential data in an encoded way so that only authorized and intended users can obtain or work on it. – Cryptanalysis is process of breaking the work of cryptography. – Cryptology is the study of cryptography and cryptanalysis both. In cryptography, a cipher or Code is an algorithm for performing encryption or decryption. Modern encryption methods can be divided by two criteria: – by type of key used – by type of input data Classical Ciphers: Ciphers written hard using simple substitutions of a letter code or a word. – 20th century, electro-mechanical machines were invented to do encryption and decryption using transposition, polyalphabetic substitution. – Secret communication requirement is there since age and methods vary as per need of the times. – Symmetric key algorithms (Private-key cryptography), where the same key is used for encryption and decryption. – Asymmetric key algorithms (Public-key cryptography), where two different keys are used for encryption and decryption. By type of input data – Block ciphers, which encrypt block of data of fixed size – Stream ciphers, which encrypt continuous streams of data Symmetric key algorithm – In symmetric key algorithms same key is used for encryption and decryption. (e.g., DES and AES) – The sender and receiver must have a shared key in advance exchanged secretly. – Symmetric-key cryptography refers to encryption methods in which both the sender and receiver share the same key. – Symmetric key ciphers are implemented as either block ciphers or stream ciphers. – A block cipher enciphers input in blocks of plaintext as opposed to individual characters, the input form used by a stream cipher. – Data Encryption Standard (DES) and the Advanced Encryption Standard (AES) are block cipher designs. In asymmetric key algorithms two different keys are used for encryption and decryption. (e.g. RSA) There are two separate keys: – a public key is published and enables any sender to perform encryption – a private key is kept secret by the receiver and can be used to perform decryption. Asymmetric systems - RSA (Rivest-Shamir-Adleman) - ECC (Elliptic Curve Cryptography) Symmetric systems - AES (Advanced Encryption Standard) - DES (Data Encryption Standard) Cryptographic hash functions are a third type of cryptographic algorithm. – They take a message of any length as input, and output a short, fixed length hash, which can be used in a digital signature. – MD5 is widely used hashing. – SHA series is more secure than MD5. SHA-2 improves SHA1 – 2012 - NIST announced that Keccak would be the new SHA-3 hash algorithm. – Cryptographic hash functions are used to verify the authenticity of data retrieved from a source.
Views: 51 CBTUniversity
NETWORK SECURITY - DIGITAL SIGNATURE ALGORITHM (DSA)
 
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Digital Signature : If the Sender Private key is used at encryption then it is called digital signature. This digital Signature is implemented two approaches 1) RSA Approach 2) DSS Approach.
What is NONREPUDIATION? What does NONREPUDIATION mean? NONREPUDIATION meaning & explanation
 
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What is NONREPUDIATION? What does NONREPUDIATION mean? NONREPUDIATION meaning - NONREPUDIATION pronunciation - NONREPUDIATION definition - NONREPUDIATION explanation - How to pronounce NONREPUDIATION? Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Non-repudiation refers to a state of affairs where the author of a statement will not be able to successfully challenge the authorship of the statement or validity of an associated contract. The term is often seen in a legal setting wherein the authenticity of a signature is being challenged. In such an instance, the authenticity is being "repudiated". In a general sense non-repudiation involves associating actions or changes to a unique individual. For a secure area, for example, it may be desirable to implement a key card access system. Non-repudiation would be violated if it were not also a strictly enforced policy to prohibit sharing of the key cards and to immediately report lost or stolen cards. Otherwise determining who performed the action of opening the door cannot be trivially determined. Similarly, for computer accounts, the individual owner of the account must not allow others to use that account, especially, for instance, by giving away their account's password, and a policy should be implemented to enforce this. This prevents the owner of the account from denying actions performed by the account. Regarding digital security, the cryptological meaning and application of non-repudiation shifts to mean: A service that provides proof of the integrity and origin of data. An authentication that can be asserted to be genuine with high assurance. Proof of data integrity is typically the easiest of these requirements to accomplish. A data hash, such as SHA2, is usually sufficient to establish that the likelihood of data being undetectably changed is extremely low. Even with this safeguard, it is still possible to tamper with data in transit, either through a man-in-the-middle attack or phishing. Due to this flaw, data integrity is best asserted when the recipient already possesses the necessary verification information. The most common method of asserting the digital origin of data is through digital certificates, a form of public key infrastructure to which digital signatures belong. Note that the public key scheme is not used for encryption in this form; i.e. the goal is not to achieve confidentiality, since a message signed with a private key can be read by anyone using the public key. Verifying the digital origin means that the certified/signed data can be, with reasonable certainty, trusted to be from somebody who possesses the private key corresponding to the signing certificate. If the key is not properly safeguarded by the original owner, digital forgery can become a major concern. The ways in which a party may attempt to repudiate a signature present a challenge to the trustworthiness of the signatures themselves. The standard approach to mitigating these risks is to involve a trusted third party. The two most common TTPs are forensic analysts and notaries. A forensic analyst specializing in handwriting can look at a signature, compare it to a known valid signature, and make a reasonable assessment of the legitimacy of the first signature. A notary provides a witness whose job is to verify the identity of an individual by checking other credentials and affixing their certification that the party signing is who they claim to be. Further, a notary provides the extra benefit of maintaining independent logs of their transactions, complete with the type of credential checked and another signature that can independently be verified by the preceding forensic analyst. For this double security, notaries are the preferred form of verification. On the digital side, the only TTP is the repository for public key certificates. This provides the recipient with the ability to verify the origin of an item even if no direct exchange of the public information has ever been made. The digital signature, however, is forensically identical in both legitimate and forged uses - if someone possesses the private key they can create a "real" signature. The protection of the private key is the idea behind the United States Department of Defense's Common Access Card (CAC), which never allows the key to leave the card and therefore necessitates the possession of the card in addition to the personal identification number (PIN) code necessary to unlock the card for permission to use it for encryption and digital signatures.
Views: 3117 The Audiopedia
Secure communication with symmetric and asymmetric encryption
 
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In this video I explain how secure communication with symmetric encryption can be even more secured with asymmetric encryption, and signatures for non-repudiation of origin and delivery.
Views: 109 Jimmy Larsson
How Do Digital Signatures Work?
 
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In this video, I will be showing you how digital signatures are generated and how they help in establishing non-repudiation.
Views: 173187 Fasih Khatib
CISA Exam-Testing Concept-Asymmetric Encryption (Domain-5)
 
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Point to remember for CISA exam: (1)In any given scenario, when objective is to ensure ‘confidentiality’, message has to be encrypted using receiver’s public key. (2)In any given scenario, when objective is to ensure ‘authentication’, HASH of the message has to be created and HASH to be encrypted using sender’s private key. Please note that hash is also known as message digest. (3)In any given scenario, when objective is to ensure ‘integrity’, HASH of the message has to be created and HASH to be encrypted using sender’s private key. Please note that hash is also known as message digest. (4)In any given scenario, when objective is to ensure ‘confidentiality & authentication’, following treatment is required: -Hash of the message to be encrypted using sender’s private key (to ensure authentication/non-repudiation) -Message to be encrypted using receiver’s public key (to ensure confidentiality) (5)In any given scenario, when objective is to ensure ‘confidentiality & authentication & integrity’, following treatment is required: -Message to be encrypted using receiver’s public key (to ensure confidentiality) -Hash of the message to be encrypted using sender’s private key (to ensure authentication/non-repudiation and integrity)
Views: 8622 Hemang Doshi
Public Key Infrastructure
 
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Public Key Infrastructure (PKI) provides a safe and reliable environment for electronic transactions in the Internet. It is a security framework that uses public key encryption technique to protect the confidentiality, integrity, authenticity and non-repudiation of data. www.infosec.gov.hk
Views: 2441 GovHKvideochannel
Applications of cryptosystems
 
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This whole video is briefly about the application of Public-key cryptography which provide each of the major security services: confidentiality, user authentication, data origin authentication, data integrity, and non-repudiation.
Views: 130 Jack Ming
Secure communication with symmetric and asymmetric encryption
 
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Follow our channel at http://vid.io/xomJ Visit our web page at http://vid.io/xomQ In this video I describe how Bob can send a secret message to Alice without Eve getting its content. With asymmetric keys, symmetric encryption and signing they achieve message confidentiality, message integrity, non-repudiation and secure distribution of encryption keys.
Views: 706 nat0.net
What is Encryption [Hindi]
 
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Friends is video m hum Crytography,Encryption,Decryption,Symmetric key,Asymmetric key,Public key,Private key,Plain text and Cipher text kya hote hai in sb k bare main charcha krne wale hai or janne wale hai ki ye kya hote hai kaise ye kaam krte hai or in k kya kya fayde hai or sath hi hum ye bhi janenge ki Android Phone ko kaise encrypt kiya ja sakta hai toh is video ko End tak dekhen. I hope Aapko ye video Pasand aayegi Please Like,Share and SUBSCRIBE #JAI BHARAT It's My Passion Facebook :-https://www.facebook.com/TechnicalChoro Twitter:-https://twitter.com/TechnicalChoro Google+:-https://plus.google.com/b/114386885239188983906
Views: 20102 Technical Choro
Encryption Explained | Public Key Encryption In Hindi
 
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Hello Dosto!! Aaj ki is video mai hum data encryption eai phir encryption ke bare mai detail mai baat karne wale hai. Encryption mai sabse sada koi muskil topic hai toh oh hai public key encryption eai phir public key cryptography eai phir asymmetric key cryptography eai phir asymmetric key encryption eai phir public key cryptography ke bare mai. Jaise ki aap ko pata hai encryption 2 tarake hote hai ek hai public key encryption dusra hai private key encryption. Private key encryption ko symmetric key encryption eai phir symmetric cryptography bhi bola jata hai. Mainly encryption ka kam hai computer ke data transmission mai security provide karna. ------------------------------------------------------------ SSD http://amzn.to/2AUlS6f Processors http://amzn.to/2AU7X09 Graphics Card Graphics Cards http://amzn.to/2Dop4dq Ram http://amzn.to/2qXmCbn Internal Hard Drives http://amzn.to/2AV1HFf ---------------------------------------------------------- My electronics Channel :- https://www.youtube.com/channel/UCV7ovTvN06Dvdzfo4GB3dvA Arduino Control Led :- https://www.youtube.com/watch?v=TQX1hp3FLAo -------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------- CHANNEL DESCRIPTION HELLO FRIENDS.THIS CHANNEL IS A TECHNOLOGY RELATED CHANNEL.A NEW VIDEO WILL COME EVERYDAY .I WILL PROVIDE YOU TECHNICAL KNOWLEDGE/REPAIRING TYPE VIDEO IN 5 DAYS,TWO DAYS I WILL PROVIDE YOU TUTORIALS.ONE DAY OF EVERY MONTH I WILL PROVIDE YOU A ELECTRONICS RELATED PROJECT.YOU CAN ASK ME EVERY QUESTION ON COMMENT SECTION & ALSO YOU CAN REQUEST ME TO MAKE A VIDEO ABOUT ANY THING.I WILL TRY TO MADE THIS. ----------------------------------------------------------------------------------------- Subscribe www.youtube.com/geekysoumya GOOGLE PLUS https://plus.google.com/u/0/106215010365082382930 FOLLOW ME ON TWITTER https://twitter.com/sdas47711 LIKE ME ON FACE BOOK https://www.facebook.com/Geekysoumya123/ add me on friends list on FB https://www.facebook.com/sd.das.334
Views: 1130 GEEKY SOUMYA
NETWORK SECURITY - TYPES OF AUTHENTICATION (Message Encryption, MAC, Hash Functions)
 
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Three types of Authentications 1. Message Encryption 2. Message Authentication Code 3. Hash Functions.
RSA Cryptosystem Algorithm (Public Key Algorithm) in Hindi with Example
 
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RSA Cryptosystem Algorithm (Public Key Algorithm) in Hindi with Example Like FB Page - https://www.facebook.com/Easy-Engineering-Classes-346838485669475/ Complete Data Structure Videos - https://www.youtube.com/playlist?list=PLV8vIYTIdSna11Vc54-abg33JtVZiiMfg Complete Java Programming Lectures - https://www.youtube.com/playlist?list=PLV8vIYTIdSnbL_fSaqiYpPh-KwNCavjIr Previous Years Solved Questions of Java - https://www.youtube.com/playlist?list=PLV8vIYTIdSnajIVnIOOJTNdLT-TqiOjUu Complete DBMS Video Lectures - https://www.youtube.com/playlist?list=PLV8vIYTIdSnYZjtUDQ5-9siMc2d8YeoB4 Previous Year Solved DBMS Questions - https://www.youtube.com/playlist?list=PLV8vIYTIdSnaPiMXU2bmuo3SWjNUykbg6 SQL Programming Tutorials - https://www.youtube.com/playlist?list=PLV8vIYTIdSnb7av5opUF2p3Xv9CLwOfbq PL-SQL Programming Tutorials - https://www.youtube.com/playlist?list=PLV8vIYTIdSnadFpRMvtA260-3-jkIDFaG Control System Complete Lectures - https://www.youtube.com/playlist?list=PLV8vIYTIdSnbvRNepz74GGafF-777qYw4
Public Keys and Private Keys - CompTIA Security+ SY0-401: 6.1
 
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Security+ Training Course Index: http://professormesser.link/sy0401 Professor Messer’s Course Notes: http://professormesser.link/sy0401cn Frequently Asked Questions: http://professormesser.link/faq - - - - - Asymmetric encryption uses two different keys to provide a secure channel. In this video, you’ll learn how public keys and private keys can be used to encrypt data, create digital signatures, and create a secure symmetric key. - - - - - Download entire video course: http://professormesser.link/401adyt Get the course on MP3 audio: http://professormesser.link/401vdyt Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 41037 Professor Messer
Principles of Security: Cryptography and Network Security for GATE(CSE)
 
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This lesson explains the Principles of Security, under the course, "Cryptography and Network Security for GATE". The lesson explains the following points: Data Confidentiality Data Integrity Data Availability Authentication Non Repudiation Some important terminology and formulae are also illustrated, for the better understanding of the subject and ease in solving numericals. For the entire course: https://goo.gl/aTMBNZ For more lessons by Ansha Pk: https://goo.gl/2DX9Wn Must watch for all the GATE/ESE/PSU Exams. Download the Unacademy Learning App from the Google Play Store here:- https://goo.gl/02OhYI Download the Unacademy Educator app from the Google Play Store here: https://goo.gl/H4LGHE Do Subscribe and be a part of the community for more such lessons here: https://goo.gl/UGFo7b Visit Our Facebook Group on GATE here: https://goo.gl/cPj5sb Principles of Security: Cryptography and Network Security for GATE(CSE) - Unacademy
Symmetric vs. Asymmetric Encryption - CompTIA Security+ SY0-401: 6.1
 
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Security+ Training Course Index: http://professormesser.link/sy0401 Professor Messer’s Course Notes: http://professormesser.link/sy0401cn Frequently Asked Questions: http://professormesser.link/faq - - - - - Our encryption methods will generally use either symmetric encryption or asymmetric encryption, and sometimes both! In this video, you’ll learn the advantages and disadvantages when using symmetric or asymmetric encryption types. - - - - - Download entire video course: http://professormesser.link/401adyt Get the course on MP3 audio: http://professormesser.link/401vdyt Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 62534 Professor Messer
Introduction to Cryptography
 
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Introduction to cryptography Cryptography is the art of achieving security by encoding messages to make them non-readable Cryptoanalysis is the technique of decoding message from a non-readable format back to a readable format without knowing how they were initially converted from readable format to non-readable format Cryptography is the practise and study of hiding information Cryptography guarantees authorization, authentication, integrity, confidentiality and non-repudiation is all communication and data exchange Cryptography System consist of four essential components: 1: plain test 2: Cryptographic 3: Ciphertext 4:Key
Views: 556 Sanjay Pathak
symmetric key cryptography
 
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https://8gwifi.org/CipherFunctions.jsp Reference book: http://leanpub.com/crypto Cryptographic Algorithms generally fall into one of two different categories, or are a combination of both. Symmetric Fast Only provide confidentiality Examples: DES, AES, Blowfish, RC4, RC5 Asymmetric Large mathematical operations make it slower than symmetric algorithms No need for out of band key distribution (public keys are public!) Scales better since only a single key pair needed per individual Can provide authentication and nonrepudiation Examples: RSA, El Gamal, ECC, Diffie-Hellman problem with symmetric key cryptography DES (Data Encryption Standard) 64 bit key that is effectively 56 bits in strength Actual algorithm is called DEA (Data Encryption Algorithm) DES Modes Electronic Code Book Cipher Block Chaining (most commonly used for general purpose encryption) Cipher Feedback Output Feedback Counter Mode (used in IPSec) 3DES 112-bit effective key length Uses either 2 or 3 different smaller keys in one of several modes Modes EEE2/3 EDE2/3 AES NIST replaced DES in 1997 with this Uses the Rijndael algorithm Supports key/block sizes of 128, 192, and 256 bits Uses 10/12/14 rounds as block size increases IDEA (International Data Encryption Algorithm) Operates on 64 bit blocks in 8 rounds with 128 bit key Considered stronger than DES and is used in PGP Blowfish 64 bit block cipher with up to 448 bit key and 16 rounds Designed by Bruce Schneier RC4 Stream cipher with variable key size created by Ron Rivest RC5 Another Rivest cipher Block cipher with 32/64/128 bit blocks and keys up to 2048 bits RC6 Beefier version of RC5 submitted as AES candidate CAST 64 bit block cipher with keys between 40-128 bits with 12-16 rounds depending on key length CAST-256 used 128-bit blocks and keys from 128-256 bits using 48 rounds SAFER (Secure and Fast Encryption Routine) Set of patent-free algorithms in 64 and 128 bit block variants Variation used in Bluetooth Twofish Adapted version of Blowfish with 128 bit blocks, 128-256 bit keys and 16 rounds AES Finalist Kryptografie mit symmetrischem Schlüssel symmetric key cryptography symmetric key cryptography tutorial symmetric key cryptography example symmetric key cryptography vs asymmetric key cryptography symmetric and asymmetric key cryptography symmetric key cryptography Kryptografie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptografie mit symmetrischem Schlüssel und asymmetrische Schlüsselkryptographie symmetrische und asymmetrische Schlüsselkryptographie Kryptografie mit symmetrischem Schlüssel
Views: 39776 Zariga Tongy
Chapter 4, part 8, Information Security: Principles and Practice
 
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Information Security: Principles and Practice, 2nd edition, by Mark Stamp Chapter 4: Public Key Crypto Section 4.7, non-repudiation
Views: 3230 Mark Stamp
Key Management.
 
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Views: 3359 Internetwork Security
NETWORK SECURITY - RSA ALGORITHM
 
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RSA Algorithm is the example for Public Key Encryption algorithm. Here we are supposed to find two keys 1) Public Key which is used at encryption 2) Private Key which is used at decryption step 1: Select two large Primes P , Q Step 2: Calculate n=P*Q & O(n) = (P-1)*(Q-1) Step 3: Assume e and d (Public and Private Key). Step 4: Encrypt the Plain Text using Public Key e. Step 5: Decrypt the Cipher Text using Private Key d.
Nonrepudiation Meaning
 
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Video shows what nonrepudiation means. Assurance that a contract cannot later be denied by either of the parties involved.. Assurance that the claimed sender or recipient is in fact the party who sent or received a given message.. Nonrepudiation Meaning. How to pronounce, definition audio dictionary. How to say nonrepudiation. Powered by MaryTTS, Wiktionary
Views: 735 ADictionary
What Is Non Repudiation?
 
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However, that is not correct the non repudiation service can be viewed as an extension to identification and authentication. Non repudiation wikipedia. Non repudiation is a legal concept that 20 oct 2016 this article sheds light on the two approaches to achieve non of an electronic message emission and assurance someone cannot deny validity something (nr) one security services (or dimensions as defined in document x. 805 by the itu) for point to point communications. What is non repudiation? Definition and meaning why banks need repudiation of origin really repudiable with digital signatures? . What is nonrepudiation? Definition from techopedia. What is the difference between authenticity and non repudiation? What repudiation? Principles, techniques best practices. Secure 19 dec 2016 a definition of non repudiation with several common examples service provides assurance the origin or delivery data in order to protect sender against false denial by recipient that has public key technology is traditionally defined as inability person (to whom been bound recognized certification definition, act repudiatingNon wikipedia. What is non repudiation in network security? Non slovnk potaov informatiky a st. Non repudiation is a much desired property in the digital world. What is nonrepudiation? Webopedia definition. Non repudiation wikipedia non refers to a state of affairs where the author statement will not be able successfully challenge authorship or validity in general, nonrepudiation is ability ensure that party contract communication cannot deny authenticity their signature on document means transferred message has been sent and received by parties claiming have along with digital signatures, public keys can problem when it comes if recipient exposed, either knowingly 31 aug 2011 some people taught provided through crypto mathematics alone. In this lesson, you'll learn more non repudiation nepopiratelnost. This article describes that property and shows how it can be definition of non repudiation general intent to accept one's obligation under a contract bound for its performance 29 aug 2016 understanding achieve emission origin in banking transactions 14 jun 2017 what does mean? Repudiation means reject or deny the validity something. Non repudiation and digital signature infosec resources. Vlastnost, kter umon pozdj dkaz o manipulaci s daty vetn jejich doruen, pvodu, pedn apod 9 jan 2014 introduction. Rant about non repudiation the world stddefine at dictionary. Understanding non repudiation of origin and what is repudiation? Cryptomathicnetwork, information computer security lab 5 examples simplicable. In general, non repudiation applies when data is 27 feb 2017 a typ
Views: 242 Hadassah Hartman
DIGITAL SIGNATURES IN FEW MINUTES / WITH SPECIAL PRICES / DISCOUNT / OFFER
 
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TAGS : DIGITAL SIGNATURES, digital signature, what is digital signature, digital, encryption, signature, cryptography, what is digital signature in hindi, non-repudiation, digital certificate, digital signature in hindi, private key, public key, explained, digital signature in hindi pdf, digital signature in hindi csc, what is digital signature certificate india, digital signature pdf, what is digital signatures in hindi, introduction to digital signature in hindi, pdf, public-key cryptography, how to get digital signature, ca, what is digital signatures, lectures, education, hash, digest, digital signature online, digital signature download, free digital signature, authentication, confidentiality, security services, maghnani, class 3, data structure, file, dst, digital signature your document, digital signature file, digital signature pdf file, digital signature document, english, ankit, walia, yt:stretch=16:9, digital signature algorithm, certificate, root, algorithm, authority, intermediate, advantages, disadvantages, self, signed, hierarchy, learn, for, beginners, digital signatures explained, easy, digital signature in cryptography, engineers, computer, computer_security, software, introduction, quick, basic, simple, best, how, tutorial, electronic, programming interview, function, model, message, signatures, asymmetric crypto function, key pair, security, cryptography (software genre), chirag, akhani, bei, bhavesh, rajani, sunil, amlani, naveen, software interview, ipcc, final, cpt, isca, classes, bangalore, bhagwati, institute, audit, control, systems, information, ipu, uptu, sunnyclassroom, sunny classroom, cybersecurity, cyber threats, wi-fi threats, networking+, technology, sunny, digitally signed document, hash function, public key encryption, private key encryption, sundeep, saradhi, kanthety, network security, information security, access control, how to, authorization, your, integrity, unauthorized access, document, mechanisms, decryption, gaining access, attacks, class 2, resources, permissions, sender, receiver, computer network, computer security, data security, dsa algorithm, dss approach, global key, signature components, paar, lecture, message integrity, legal help hindi, law, awareness, indian law, hindi, legalhelpinhindi, डिजिटल सिग्नेचर क्या होते हैं | what is digital signature | uses of digital signature, डिजिटल सिग्नेचर क्या होते हैं, uses of digital signature, digital signature ke fayde, electronic signature kya hai, digital sign kese banate hai, digital signature ka process, digital signature ke liye kaha apply kare, as informer, digital signature kaise banaye, digital signature for gst, digital signature process, how to apply digital signature, dsc certificate, signatr, signatar, signachar, raj ajwalia, digitally signing a document, how to create an e-signature, what is digital encryption, 128 bit encryption, ssl, technicalguruji, technical guruji, digital signature hindi, algorithm digital signature, dss, rsa in digital signature, ins, well academy -~-~~-~~~-~~-~- Please watch: "DIGITAL SIGNATURE / PHONE VERIFICATION PROCESS/ HOW COMPLETE PHONE VERIFICATION IN DIGITAL SIGNATURE" https://www.youtube.com/watch?v=3--SzO2j2Pg -~-~~-~~~-~~-~-
Views: 90 AGOS (e) Shop
What Is Public Key Cryptography (PKC) Full Explain In Hindi For O level Exam
 
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What Is Public Key Cryptography? What is encryption encryption-kya-hota-hai ╔╦╦╦═╦╗╔═╦═╦══╦═╗☆ ║║║║╩╣╚╣═╣║║║║║╩╣TO My Channel ╚══╩═╩═╩═╩═╩╩╩╩═╝☆ Subscribe my channel like videos comment below any query to Subscribe Us & Comment:- https://goo.gl/FJ1nWJ Follow On social site © original channel ██║▌│║║█║█║▌║║█║▌│ █ __/LINKS\_ ► Facebook:➜ http://facebook.com/techvideoguru ► Twitter:➜ https://mobile.twitter.com/techvideoguru ► Google+:➜ https://plus.google.com/u/0/107344256878607670469 ► Website:➜ http://techvideoguru.mobi ►Youtube:-https://www.youtube.com/techvideoguru ►Blog:-http://techvideoguru.blogspot.in ►Instagram:-https://www.instagram.com/techvideoguru/ ►Pinterest:- https://www.pinterest.com/techvideoguru/ ►Dailymotion:-http://www.dailymotion.com/techvideoguru ►LinkedIn:-https://in.linkedin.com/in/vikas-kumar-maurya-27262b78 ================================================ ╔══════════════════════╗ __|Watch More Videos|_ https://goo.gl/FJ1nWJ ╚══════════════════════╝
Views: 63877 TechVideo Guru
Public and Private Keys - CompTIA Security+ SY0-301: 6.3
 
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See our entire index of CompTIA Security+ videos at http://www.FreeSecurityPlus.com - Asymmetric encryption technology has redefined our use of encryption with today's technology. In this video, you'll learn how this pair of keys allows use to encrypt, authenticate, manage non-repudiation, and validate our data.
Views: 13805 Professor Messer
Cryptography | Blockchain
 
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In this video we will discuss : Peer to peer network Confidentiality Integrity Non-repudiation Authentication Cryptography Encryption Decryption #blockchain #cryptography #P2P #confidentiality #integrity #authentication #nonrepudiation
Views: 6177 Telusko
Digital Signature in Hindi
 
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This Tutorial Explain What is Digital Signature in Hindi. A Digital Signature in Hindi (not to be confused with a digital certificate) is a mathematical technique used to validate the authenticity and integrity of a message, software or digital document. It Covers Points like digital signature in cryptography in hindi, digital signature in network security and digital signature in dbms(advance database management system) Digital Signature Use Asymatric Key to Encrypt Data. Digital signatures are often used to implement electronic signatures, a broader term that refers to any electronic data that carries the intent of a signature How digital signatures work Digital signatures are based on public key cryptography, also known as asymmetric cryptography. Using a public key algorithm such as RSA, one can generate two keys that are mathematically linked: one private and one public. To create a digital signature, signing software (such as an email program) creates a one-way hash of the electronic data to be signed. The private key is then used to encrypt the hash. The encrypted hash -- along with other information, such as the hashing algorithm -- is the digital signature. The reason for encrypting the hash instead of the entire message or document is that a hash function can convert an arbitrary input into a fixed length value, which is usually much shorter. This saves time since hashing is much faster than signing. Subscribe my Channel: https://goo.gl/FYkHc5 Reference Link: https://en.wikipedia.org/wiki/Digital_signature
Views: 1226 Introtuts
Information & Network Security Lecture --  Key Distribution Techniques | public-secret | (Eng-Hindi)
 
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-~-~~-~~~-~~-~- Please watch: "PL vs FOL | Artificial Intelligence | (Eng-Hindi) | #3" https://www.youtube.com/watch?v=GS3HKR6CV8E -~-~~-~~~-~~-~-
Views: 25581 Well Academy
Symmetric key cryptography and asymmetric key cryptography
 
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symmetric key cryptography and asymmetric key cryptography
Views: 61 Last Night Study
CISA Exam-Last Minute Revision- Asymmetric Encryption Domain 5   Copy
 
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Point to remember for CISA exam: (1)In any given scenario, when objective is to ensure ‘confidentiality’, message has to be encrypted using receiver’s public key. (2)In any given scenario, when objective is to ensure ‘authentication’, HASH of the message has to be created and HASH to be encrypted using sender’s private key. Please note that hash is also known as message digest. (3)In any given scenario, when objective is to ensure ‘integrity’, HASH of the message has to be created and HASH to be encrypted using sender’s private key. Please note that hash is also known as message digest. (4)In any given scenario, when objective is to ensure ‘confidentiality & authentication’, following treatment is required: -Hash of the message to be encrypted using sender’s private key (to ensure authentication/non-repudiation) -Message to be encrypted using receiver’s public key (to ensure confidentiality) (5)In any given scenario, when objective is to ensure ‘confidentiality & authentication & integrity’, following treatment is required: -Message to be encrypted using receiver’s public key (to ensure confidentiality) -Hash of the message to be encrypted using sender’s private key (to ensure authentication/non-repudiation and integrity)
Views: 1187 Hemang Doshi
Asymmetric Key Encryption
 
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Explanation of how asymmetric key encryption works. Part of a secure engineering web app found here: http://www.ibm.biz/ek-ibmz Music by www.bensound.com IBM Contact: Bryan Childs
Views: 286 IBM Developer
[Hindi] What is Cryptography ? | Kya hai cryptography ? | Explained in simple words
 
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Hello Dosto Aaj hum baat karenge cryptography ke bare me ki ye kya hota hai aur iska itemaal kaise aur kaha hota hai. iska sambandh kisi bhi data ya message ko safely pohchane se hota hai aur uski security badhayi jati hai taaki bich me koi an-adhikarik tarike se usko access na kar paye. aasha karta hoo apko ye video pasand ayegi agar aapko ye video achhi lage to isse like kare aur apne dosto ke sath share kare aur abhi tak aapne mera channel subscribe nahi kia hai to jarur is channel ko subscribe kare. Subscribe to my channel for more videos like this and to support my efforts. Thanks and Love #TechnicalSagar LIKE | COMMENT | SHARE | SUBSCRIBE ---------------------------------------------------------------------------------- For all updates : SUBSCRIBE Us on Technical Sagar : www.youtube.com/technicalsagarindia LIKE us on Facebook https://www.facebook.com/technicalsagarindia Follow us on Twitter : http://www.twitter.com/iamasagar
Views: 83865 Technical Sagar
Asymmetric Cryptography Algorithms - CompTIA Security+ SY0-401: 6.2
 
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Security+ Training Course Index: http://professormesser.link/sy0401 Professor Messer’s Course Notes: http://professormesser.link/sy0401cn Frequently Asked Questions: http://professormesser.link/faq - - - - - Asymmetric cryptography has enabled secure communication, digital signatures, and much more. In this video, you’ll learn about the well-known asymmetric algorithms of RSA and Diffie-Hellman. - - - - - Download entire video course: http://professormesser.link/401adyt Get the course on MP3 audio: http://professormesser.link/401vdyt Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 25112 Professor Messer
ACPN: A Novel Authentication Framework with Conditional Privacy-Preservation and Non-Repudiation
 
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ACPN: A Novel Authentication Framework with Conditional Privacy-Preservation and Non-Repudiation for VANETs To get this project in ONLINE or through TRAINING Sessions, Contact: JP INFOTECH, Old No.31, New No.86, 1st Floor, 1st Avenue, Ashok Pillar, Chennai -83.Landmark: Next to Kotak Mahendra Bank. Pondicherry Office: JP INFOTECH, #45, Kamaraj Salai,Thattanchavady, Puducherry -9.Landmark: Next to VVP Nagar Arch. Mobile: (0) 9952649690, Email: [email protected], web: www.jpinfotech.org, Blog: www.jpinfotech.blogspot.com In Vehicular Ad hoc NETworks (VANETs), authentication is a crucial security service for both inter-vehicle and vehicle roadside communications. On the other hand, vehicles have to be protected from the misuse of their private data and the attacks on their privacy, as well as to be capable of being investigated for accidents or liabilities from non-repudiation. In this paper, we investigate the authentication issues with privacy preservation and non-repudiation in VANETs. We propose a novel framework with preservation and repudiation (ACPN) for VANETs. In ACPN, we introduce the public-key cryptography (PKC) to the pseudonym generation, which ensures legitimate third parties to achieve the non-repudiation of vehicles by obtaining vehicles’ real IDs. The self-generated PKCbased pseudonyms are also used as identifiers instead of vehicle IDs for the privacy-preserving authentication, while the update of the pseudonyms depends on vehicular demands. The existing ID-based signature (IBS) scheme and the ID-based online/offline signature (IBOOS) scheme are used, for the authentication between the road side units (RSUs) and vehicles, and the authentication among vehicles, respectively. Authentication, privacy preservation, non-repudiation and other objectives of ACPN have been analyzed for VANETs. Typical performance evaluation has been conducted using efficient IBS and IBOOS schemes. We show that the proposed ACPN is feasible and adequate to be used efficiently in the VANET environment.
Views: 169 jpinfotechprojects
What is a digital certificate and digital signature ? Working and all explained
 
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Lesson 4 of cryptography series (to see all video check cryptography playlist - link given below). cryptography playlist : https://www.youtube.com/watch?v=_Yw7QWbk9Vs&list=PLf8bMP4RWebLVGpUnhji9Olkj1jdXfzFd Subscribe to our new youtube channel also : https://www.youtube.com/channel/UCNx1Gkyy9LfOxDMbcOKuV4g What is a digital certificate ? What is a digital signature ? All about digital certificates and signatures . This video includes : advantages and disadvantages of digital certificates , working of digital certificates , in depth meaning of digital certificates and digital signatures , how public key of server gets shared with client securely , what could happen if digital certificates were forged , what is a certified authority , what is a self signed certificate , hierarchy of certified authorities , comparing digital signatures to real life signatures , comparing digital certificates to real life signatures and a lot more . #digital #certificate #signature
Views: 207227 Hacks And Security

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