Cryptography and digital certificates can be used to securely encrypt electronic communications and authenticate digital identities. A public key infrastructure (PKI) manages the lifecycle of digital certificates, including credentialing, generating certificates, distributing public keys, revoking certificates, and more. Secure email protocols like S/MIME use public/private key encryption and digital signatures to authenticate senders and ensure message integrity.
Pki & Personal Digital Certificates, The Key To Securing Sensitive Electr...Nicholas Davis
The document provides an overview of PKI (Public Key Infrastructure) and digital certificates. It discusses how PKI manages the lifecycle of digital certificates, including credentialing individuals, generating and distributing certificates, renewing and revoking certificates. It explains how digital certificates use public/private key pairs to provide authentication, data integrity and encryption. The document also discusses how digital certificates can be used to securely encrypt and digitally sign email to prove the identity of the sender and that the message has not been altered.
Pki the key to securing sensitive communicationsNicholas Davis
This document provides an overview of a presentation on PKI (Public Key Infrastructure) and digital certificates. The presentation covers topics such as what digital certificates are, how they work, how PKI manages the lifecycle of certificates, how digital signatures provide authentication and integrity, and how encryption protects sensitive communications and data at rest and in transit. It also discusses how digital certificates can be used to secure email and discusses some real-world issues with PKI implementations.
Pki & Personal Digital Certificates, Securing Sensitive Electronic Commun...Nicholas Davis
Digital certificates and PKI provide authentication, digital signing of documents, and encryption. Digital certificates can authenticate individuals and machines, digitally sign emails and documents to verify authenticity and integrity, and encrypt information for privacy and security both in transit and at rest. At UW-Madison, many departments and offices use digital certificates including DoIT, UW Police, the Registrar's Office, and the Medical School. Other organizations that use them include the US Department of Defense, Western European countries, and large companies like Johnson & Johnson. Digital certificates require an initial investment but make electronic communications more secure.
The document discusses digital signatures, including what they are, how they work, and their use and importance for organizations. A digital signature is a small block of encrypted data attached to an electronic document that verifies the signer's identity and ensures the document has not been altered. For organizations, digital signatures can save significant time and costs compared to physical signatures by allowing remote signing of documents without printing or delivery. While some prefer the personal connection of handwritten signatures, digital signatures are more secure and efficient and will likely replace physical signatures as the technology becomes more advanced and widely used.
A digital code that can be attached to an electronically transmitted message that uniquely identifies the sender. Like a written signature, the purpose of a digital signature is to guarantee that the individual sending the message really is who he or she claims to be. Digital signatures are especially important for electronic commerce and are a key component of most authentication schemes. To be effective, digital signatures must be unforgettable. There are a number of different encryption techniques to guarantee this level of security.
What is a Digital Signature? | How Digital Signature work?MSA Technosoft
This tutorial helps you to learn about Digital Signature. See how a digital signature work? Key Concepts: Encrytption & Decryption, Algortithms, RSA, Public Key & Private Key, Advantage of DSC, Disadvantage of DSC
Security everywhere digital signature and digital fingerprint v1 (personal)Paul Yang
This is the slide I used to train people about the security concepts, such as digital signature and digital fingerprint.
I tried to use friendly way to explain the topic with animation and many example in real life.
Hope it helps for you.
Pki & Personal Digital Certificates, The Key To Securing Sensitive Electr...Nicholas Davis
The document provides an overview of PKI (Public Key Infrastructure) and digital certificates. It discusses how PKI manages the lifecycle of digital certificates, including credentialing individuals, generating and distributing certificates, renewing and revoking certificates. It explains how digital certificates use public/private key pairs to provide authentication, data integrity and encryption. The document also discusses how digital certificates can be used to securely encrypt and digitally sign email to prove the identity of the sender and that the message has not been altered.
Pki the key to securing sensitive communicationsNicholas Davis
This document provides an overview of a presentation on PKI (Public Key Infrastructure) and digital certificates. The presentation covers topics such as what digital certificates are, how they work, how PKI manages the lifecycle of certificates, how digital signatures provide authentication and integrity, and how encryption protects sensitive communications and data at rest and in transit. It also discusses how digital certificates can be used to secure email and discusses some real-world issues with PKI implementations.
Pki & Personal Digital Certificates, Securing Sensitive Electronic Commun...Nicholas Davis
Digital certificates and PKI provide authentication, digital signing of documents, and encryption. Digital certificates can authenticate individuals and machines, digitally sign emails and documents to verify authenticity and integrity, and encrypt information for privacy and security both in transit and at rest. At UW-Madison, many departments and offices use digital certificates including DoIT, UW Police, the Registrar's Office, and the Medical School. Other organizations that use them include the US Department of Defense, Western European countries, and large companies like Johnson & Johnson. Digital certificates require an initial investment but make electronic communications more secure.
The document discusses digital signatures, including what they are, how they work, and their use and importance for organizations. A digital signature is a small block of encrypted data attached to an electronic document that verifies the signer's identity and ensures the document has not been altered. For organizations, digital signatures can save significant time and costs compared to physical signatures by allowing remote signing of documents without printing or delivery. While some prefer the personal connection of handwritten signatures, digital signatures are more secure and efficient and will likely replace physical signatures as the technology becomes more advanced and widely used.
A digital code that can be attached to an electronically transmitted message that uniquely identifies the sender. Like a written signature, the purpose of a digital signature is to guarantee that the individual sending the message really is who he or she claims to be. Digital signatures are especially important for electronic commerce and are a key component of most authentication schemes. To be effective, digital signatures must be unforgettable. There are a number of different encryption techniques to guarantee this level of security.
What is a Digital Signature? | How Digital Signature work?MSA Technosoft
This tutorial helps you to learn about Digital Signature. See how a digital signature work? Key Concepts: Encrytption & Decryption, Algortithms, RSA, Public Key & Private Key, Advantage of DSC, Disadvantage of DSC
Security everywhere digital signature and digital fingerprint v1 (personal)Paul Yang
This is the slide I used to train people about the security concepts, such as digital signature and digital fingerprint.
I tried to use friendly way to explain the topic with animation and many example in real life.
Hope it helps for you.
Digital signatures provide authenticity, integrity, and non-repudiation for electronic documents. They use asymmetric cryptography with a private key for signing and public key for verification. The signer uses their private key to encrypt a hash of the message, creating a digital signature. The recipient can then decrypt the signature with the signer's public key to verify the message has not been altered. Hardware tokens like smart cards and USB tokens store private keys securely. The Controller of Certifying Authorities licenses and monitors Certifying Authorities in India that issue digital signature certificates.
Digital signatures provide authenticity, integrity, and non-repudiation for electronic documents and allow for secure e-governance and e-commerce using the internet. A digital signature is created using a private key to sign a message, and the signature can be verified using the corresponding public key. Digital signatures employ asymmetric cryptography and consist of key generation, signing, and verification algorithms. Hardware tokens like smart cards and USB tokens securely store private keys to generate digital signatures on documents. The Controller of Certifying Authorities licenses and regulates certification authorities in India to issue digital signature certificates.
A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or document. A valid digital signature gives a recipient reason to believe that the message was created by a known sender, such that the sender cannot deny having sent the message (authentication and non-repudiation) and that the message was not altered in transit (integrity). Digital signatures are commonly used for software distribution, financial transactions, and in other cases where it is important to detect forgery or tampering.
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, but not all electronic signatures use digital signatures. In some countries, including the United States, India, and members of the European Union, electronic signatures have legal significance.
This document discusses digital signatures. A digital signature is a code attached to an electronic document that verifies the contents and sender's identity using public key encryption. It involves two processes - creation and verification. For creation, a hash of the message is encrypted with the sender's private key. For verification, the receiver decrypts the signature with the public key and compares the hash to ensure the message wasn't altered. Digital signatures provide authentication of the sender and integrity of the data. They are used in applications that require assurance of an individual's identity or confirmation of an affirmative act.
Digital signatures provide a way to verify the authenticity and integrity of digital documents and messages. They use public key cryptography where a document or message is hashed, then encrypted with the sender's private key. The recipient can decrypt the signature with the sender's public key and verify that the message has not been altered by comparing the decrypted hash to a newly computed hash of the received message. Digital certificates typically contain the owner's public key, name, expiration date, issuer information, and digital signature to validate the identity of the owner.
The document discusses different types of digital signatures, including direct digital signatures and arbitrated digital signatures. A direct digital signature only involves a sender and receiver, while an arbitrated digital signature includes a third party arbiter to verify the signature before the recipient receives the message. The advantages of digital signatures are authentication and verification between sender and recipient, while disadvantages include relying on the sender owning their public key and potential delays in signature generation and verification.
Vague powerpoint on What is digital signature? Why it came into the picture? How it is use to individuals in present generation? Advantages and disadvantages of Digital Signature.
The document discusses digital signatures and the process for obtaining a digital signature certificate in India. It defines digital signatures and compares them to paper signatures. It outlines the different classes of digital signature certificates (1, 2, and 3) and explains that a class 3 certificate is needed for individuals for legally valid purposes. The steps to obtain a class 3 certificate involve downloading root certificates, selecting a certification authority, visiting their website, selecting the certificate type, and submitting an online request to generate a key pair.
Digital signatures use asymmetric cryptography to authenticate digital messages. They allow a recipient to verify the identity of the sender and confirm the message has not been altered. A digital signature scheme involves key generation, signing, and verification algorithms. Digital signatures provide authentication, integrity, and non-repudiation and are commonly used for software distribution, financial transactions, and other cases requiring detection of forgery or tampering. They offer advantages over traditional ink signatures like inability to forge or erase the signature.
Encryption has a long history dating back to ancient times. It involves converting information into an unreadable format that can only be read by authorized parties. Key events included the development of the Enigma machine in the 1920s and the Data Encryption Standard in the 1970s. Encryption protects sensitive data and communications. It works by using mathematical algorithms and keys to encode and decode information. Authentication verifies identities, while digital signatures validate and authenticate data. Steganography hides secret messages within other files and media to avoid detection. Strong passwords, password managers, and two-factor authentication enhance security.
The document discusses digital signatures, including how they work using public key cryptography. Digital signatures provide authentication by allowing the signature to be verified using the signer's public key. The document outlines the differences between conventional and digital signatures and describes common digital signature schemes, public key encryption, digital certificates, certifying authorities, and methods for protecting private keys like hardware tokens and smart cards.
Next Generation of Data Leakage & Loss Prevention Technologies.
GTB Technologies provides products for data loss prevention in corporate networks and endpoints, in motion and at rest. Its flagship product, the GTB Inspector is a winner of multiple awards and rave reviews in the press .
alon@gttb.com
The document discusses digital signatures and how they provide authenticity, integrity and non-repudiation for electronic documents. It explains how digital signatures are generated using public/private key pairs, and how they vary based on the document content. It also discusses the role of a certification authority in a public key infrastructure for verifying and validating digital signatures.
Digital signatures provide authentication of digital documents by using asymmetric cryptography algorithms like RSA. Digital signatures demonstrate that a message was created by a known sender and was not altered in transit. They are commonly used for software distribution, financial transactions, and anywhere unaltered authentication is important. Digital signatures work by using public and private keys to encrypt a hash of the message, validating the source and integrity of the signed document.
How to design a digital signature in odooPlanetOdoo
Odoo Digital Signature is a fast and beneficial way to send, sign and approve documents. The Odoo digital signature can be very important for documents such as sale orders, purchase orders, invoices, payslips, procurement receipts, etc.
Literature review of Digital SignatureAsim Neupane
The document discusses digital signatures and how they work. It explains that a digital signature is an electronic signature that authenticates the identity of the sender and ensures the message has not been altered. It is generated by encrypting a message digest of the document with the sender's private key. This allows the recipient to decrypt the signature with the public key and verify that the message matches the original. The document then discusses how digital signatures can be made more efficient through the use of message digests, which provide a fingerprint of the data through a hash function. This allows signing just the digest rather than the entire message.
The document discusses digital signatures, which provide authentication of electronic documents and messages. Digital signatures use public key cryptography, with each user having a unique private key and corresponding public key. To generate a digital signature, a document's hash value is encrypted with the sender's private key. Recipients can verify the signature by decrypting the hash with the sender's public key and comparing it to a newly generated hash of the received document. This allows confirmation of the sender's identity and ensures the document has not been altered. The document outlines the basic digital signature process and requirements for using digital signatures to authenticate electronic information.
Pki & personal digital certificates, the key to securing sensitive electronic...Nicholas Davis
The document provides an overview of PKI (Public Key Infrastructure) and how it relates to securing electronic communications with digital certificates. It discusses how PKI manages the lifecycle of digital certificates, including generating, distributing, storing, renewing, and revoking certificates. It also explains how digital certificates and public/private key encryption can be used to securely sign and encrypt email, helping to authenticate senders and ensure message integrity and privacy. Overall, the document outlines the basic concepts of PKI and how it enables trusted electronic communications through the use of digital certificates.
Pki & personal digital certificates, securing sensitive electronic communicat...Nicholas Davis
Digital certificates and PKI provide authentication, digital signing of documents, and encryption. Digital certificates can authenticate individuals and machines, digitally sign emails and documents to verify authenticity and integrity, and encrypt information for privacy and security both in transit and at rest. At UW-Madison, many departments and offices use digital certificates including DoIT, UW Police, the Registrar's Office, and the Medical School. Other organizations that use them include the US Department of Defense, Western European countries, and large companies like Johnson & Johnson. Digital certificates need to reach critical mass to provide security benefits, but provide assurances and keep private information private.
Securing email and electronic documents with digital certificates, by nichola...Nicholas Davis
Nicholas Davis gave a presentation on securing email and electronic documents using digital certificates and PKI. He discussed what a PKI is, what digital certificates are, and their uses for digital signing, encryption, and authentication. He covered how digital signatures provide proof of sender and message integrity. He also discussed how PKI can be implemented at the University of Wisconsin to securely communicate via email between campuses using digital certificates instead of usernames and passwords.
Securing Email And Electronic Documents With Digital Certificates, By Nichola...Nicholas Davis
Nicholas Davis gave a presentation on securing email and electronic documents using digital certificates and PKI. He discussed what a PKI is, what digital certificates are, and their uses for digital signing, encryption, and authentication. He covered how digital signatures provide proof of sender and message integrity. He also discussed how PKI has been implemented at UW-Madison and their plans to expand it to other UW System campuses to securely communicate via email.
This document provides an overview of authentication topics, including:
- Defining authentication and the three main electronic authentication factors: something you know, something you have, something you are.
- Discussing common authentication methods like usernames/passwords and their benefits and drawbacks.
- Covering other authentication methods such as one-time passwords, biometrics, digital certificates, and knowledge-based authentication.
- Identifying issues with initial credentialing and key concepts regarding the state of digital authentication.
Digital signatures provide authenticity, integrity, and non-repudiation for electronic documents. They use asymmetric cryptography with a private key for signing and public key for verification. The signer uses their private key to encrypt a hash of the message, creating a digital signature. The recipient can then decrypt the signature with the signer's public key to verify the message has not been altered. Hardware tokens like smart cards and USB tokens store private keys securely. The Controller of Certifying Authorities licenses and monitors Certifying Authorities in India that issue digital signature certificates.
Digital signatures provide authenticity, integrity, and non-repudiation for electronic documents and allow for secure e-governance and e-commerce using the internet. A digital signature is created using a private key to sign a message, and the signature can be verified using the corresponding public key. Digital signatures employ asymmetric cryptography and consist of key generation, signing, and verification algorithms. Hardware tokens like smart cards and USB tokens securely store private keys to generate digital signatures on documents. The Controller of Certifying Authorities licenses and regulates certification authorities in India to issue digital signature certificates.
A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or document. A valid digital signature gives a recipient reason to believe that the message was created by a known sender, such that the sender cannot deny having sent the message (authentication and non-repudiation) and that the message was not altered in transit (integrity). Digital signatures are commonly used for software distribution, financial transactions, and in other cases where it is important to detect forgery or tampering.
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, but not all electronic signatures use digital signatures. In some countries, including the United States, India, and members of the European Union, electronic signatures have legal significance.
This document discusses digital signatures. A digital signature is a code attached to an electronic document that verifies the contents and sender's identity using public key encryption. It involves two processes - creation and verification. For creation, a hash of the message is encrypted with the sender's private key. For verification, the receiver decrypts the signature with the public key and compares the hash to ensure the message wasn't altered. Digital signatures provide authentication of the sender and integrity of the data. They are used in applications that require assurance of an individual's identity or confirmation of an affirmative act.
Digital signatures provide a way to verify the authenticity and integrity of digital documents and messages. They use public key cryptography where a document or message is hashed, then encrypted with the sender's private key. The recipient can decrypt the signature with the sender's public key and verify that the message has not been altered by comparing the decrypted hash to a newly computed hash of the received message. Digital certificates typically contain the owner's public key, name, expiration date, issuer information, and digital signature to validate the identity of the owner.
The document discusses different types of digital signatures, including direct digital signatures and arbitrated digital signatures. A direct digital signature only involves a sender and receiver, while an arbitrated digital signature includes a third party arbiter to verify the signature before the recipient receives the message. The advantages of digital signatures are authentication and verification between sender and recipient, while disadvantages include relying on the sender owning their public key and potential delays in signature generation and verification.
Vague powerpoint on What is digital signature? Why it came into the picture? How it is use to individuals in present generation? Advantages and disadvantages of Digital Signature.
The document discusses digital signatures and the process for obtaining a digital signature certificate in India. It defines digital signatures and compares them to paper signatures. It outlines the different classes of digital signature certificates (1, 2, and 3) and explains that a class 3 certificate is needed for individuals for legally valid purposes. The steps to obtain a class 3 certificate involve downloading root certificates, selecting a certification authority, visiting their website, selecting the certificate type, and submitting an online request to generate a key pair.
Digital signatures use asymmetric cryptography to authenticate digital messages. They allow a recipient to verify the identity of the sender and confirm the message has not been altered. A digital signature scheme involves key generation, signing, and verification algorithms. Digital signatures provide authentication, integrity, and non-repudiation and are commonly used for software distribution, financial transactions, and other cases requiring detection of forgery or tampering. They offer advantages over traditional ink signatures like inability to forge or erase the signature.
Encryption has a long history dating back to ancient times. It involves converting information into an unreadable format that can only be read by authorized parties. Key events included the development of the Enigma machine in the 1920s and the Data Encryption Standard in the 1970s. Encryption protects sensitive data and communications. It works by using mathematical algorithms and keys to encode and decode information. Authentication verifies identities, while digital signatures validate and authenticate data. Steganography hides secret messages within other files and media to avoid detection. Strong passwords, password managers, and two-factor authentication enhance security.
The document discusses digital signatures, including how they work using public key cryptography. Digital signatures provide authentication by allowing the signature to be verified using the signer's public key. The document outlines the differences between conventional and digital signatures and describes common digital signature schemes, public key encryption, digital certificates, certifying authorities, and methods for protecting private keys like hardware tokens and smart cards.
Next Generation of Data Leakage & Loss Prevention Technologies.
GTB Technologies provides products for data loss prevention in corporate networks and endpoints, in motion and at rest. Its flagship product, the GTB Inspector is a winner of multiple awards and rave reviews in the press .
alon@gttb.com
The document discusses digital signatures and how they provide authenticity, integrity and non-repudiation for electronic documents. It explains how digital signatures are generated using public/private key pairs, and how they vary based on the document content. It also discusses the role of a certification authority in a public key infrastructure for verifying and validating digital signatures.
Digital signatures provide authentication of digital documents by using asymmetric cryptography algorithms like RSA. Digital signatures demonstrate that a message was created by a known sender and was not altered in transit. They are commonly used for software distribution, financial transactions, and anywhere unaltered authentication is important. Digital signatures work by using public and private keys to encrypt a hash of the message, validating the source and integrity of the signed document.
How to design a digital signature in odooPlanetOdoo
Odoo Digital Signature is a fast and beneficial way to send, sign and approve documents. The Odoo digital signature can be very important for documents such as sale orders, purchase orders, invoices, payslips, procurement receipts, etc.
Literature review of Digital SignatureAsim Neupane
The document discusses digital signatures and how they work. It explains that a digital signature is an electronic signature that authenticates the identity of the sender and ensures the message has not been altered. It is generated by encrypting a message digest of the document with the sender's private key. This allows the recipient to decrypt the signature with the public key and verify that the message matches the original. The document then discusses how digital signatures can be made more efficient through the use of message digests, which provide a fingerprint of the data through a hash function. This allows signing just the digest rather than the entire message.
The document discusses digital signatures, which provide authentication of electronic documents and messages. Digital signatures use public key cryptography, with each user having a unique private key and corresponding public key. To generate a digital signature, a document's hash value is encrypted with the sender's private key. Recipients can verify the signature by decrypting the hash with the sender's public key and comparing it to a newly generated hash of the received document. This allows confirmation of the sender's identity and ensures the document has not been altered. The document outlines the basic digital signature process and requirements for using digital signatures to authenticate electronic information.
Pki & personal digital certificates, the key to securing sensitive electronic...Nicholas Davis
The document provides an overview of PKI (Public Key Infrastructure) and how it relates to securing electronic communications with digital certificates. It discusses how PKI manages the lifecycle of digital certificates, including generating, distributing, storing, renewing, and revoking certificates. It also explains how digital certificates and public/private key encryption can be used to securely sign and encrypt email, helping to authenticate senders and ensure message integrity and privacy. Overall, the document outlines the basic concepts of PKI and how it enables trusted electronic communications through the use of digital certificates.
Pki & personal digital certificates, securing sensitive electronic communicat...Nicholas Davis
Digital certificates and PKI provide authentication, digital signing of documents, and encryption. Digital certificates can authenticate individuals and machines, digitally sign emails and documents to verify authenticity and integrity, and encrypt information for privacy and security both in transit and at rest. At UW-Madison, many departments and offices use digital certificates including DoIT, UW Police, the Registrar's Office, and the Medical School. Other organizations that use them include the US Department of Defense, Western European countries, and large companies like Johnson & Johnson. Digital certificates need to reach critical mass to provide security benefits, but provide assurances and keep private information private.
Securing email and electronic documents with digital certificates, by nichola...Nicholas Davis
Nicholas Davis gave a presentation on securing email and electronic documents using digital certificates and PKI. He discussed what a PKI is, what digital certificates are, and their uses for digital signing, encryption, and authentication. He covered how digital signatures provide proof of sender and message integrity. He also discussed how PKI can be implemented at the University of Wisconsin to securely communicate via email between campuses using digital certificates instead of usernames and passwords.
Securing Email And Electronic Documents With Digital Certificates, By Nichola...Nicholas Davis
Nicholas Davis gave a presentation on securing email and electronic documents using digital certificates and PKI. He discussed what a PKI is, what digital certificates are, and their uses for digital signing, encryption, and authentication. He covered how digital signatures provide proof of sender and message integrity. He also discussed how PKI has been implemented at UW-Madison and their plans to expand it to other UW System campuses to securely communicate via email.
This document provides an overview of authentication topics, including:
- Defining authentication and the three main electronic authentication factors: something you know, something you have, something you are.
- Discussing common authentication methods like usernames/passwords and their benefits and drawbacks.
- Covering other authentication methods such as one-time passwords, biometrics, digital certificates, and knowledge-based authentication.
- Identifying issues with initial credentialing and key concepts regarding the state of digital authentication.
This document provides an overview of authentication topics, including:
- Defining authentication and the three main electronic authentication factors: something you know, something you have, something you are.
- Discussing common authentication methods like usernames/passwords and their benefits and drawbacks.
- Explaining one-time password devices, biometric authentication, and digital certificates.
- Identifying issues with current authentication techniques and outlining key concepts regarding authentication.
This document provides a high-level overview of TLS (Transport Layer Security) in 3 sentences or less:
TLS allows two parties to establish an encrypted connection by using public key cryptography for authentication during the initial handshake and then using symmetric encryption for faster encrypted data transfer. It relies on certificate authorities to validate server identities through digital signatures on their public keys. The initial handshake establishes a shared secret for deriving the symmetric encryption keys through techniques like Diffie-Hellman key exchange to provide forward secrecy if private keys are later compromised.
In this talk, I will explain the foundations of the TLS protocol: symmetric encryption, digital signature, PKI, and how these concepts come together to secure your network connections
This digital certificate is for Dr. Wisanu Tuntawiroon of Genia Solution in Thailand. It discusses symmetric and asymmetric encryption keys. Symmetric encryption uses a shared key for encryption and decryption, while asymmetric encryption uses a public key for encryption and a private key for decryption. Digital certificates help verify identities and provide security, confidentiality, and integrity for online messages. They normally follow the X.509 standard and can help prevent impersonation by independently verifying public keys. Signatures on documents provide legal evidence of approval and help prevent disputes.
There are three types of intruders who can dampen the company’s electronic system and they are hackers, freakers and crackers.
Banks, insurance companies, consultants, textile business are some of the major types of organizations who fall victim to such mal-practices. The intruders have a well-thought out system to attack the organization. They gain access to user’s accounts, use the victim’s system as a platform to attack other sites. Companies can save themselves from this serious threat if they follow certain basic tip such as using the latest version of the browser, installing SSL, ensuring that ISP has a security system and they should shop with familiar companies.
In this presentation we will discuss the ways in which the online security can be beefed up while keeping numerous kinds of intruders at bay. The methods in which victims are attacked and tips to ensure a secure e-commerce transaction will also be given prominence in this presentation.
To know more about Welingkar School’s Distance Learning Program and courses offered, visit:
http://www.welingkaronline.org/distance-learning/online-mba.html
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Dissemination of knowledge on Secure Systems EngineeringJAIGANESH SEKAR
This document provides an overview of topics related to secure systems engineering including cryptography, digital signatures, blockchains, and privacy technologies. It discusses cryptography concepts like symmetric and asymmetric encryption. Digital signatures are explained as a method to authenticate messages using public/private key pairs. Blockchains are described as a method to securely record transactions in a distributed ledger using hashes. Privacy-preserving technologies like zero-knowledge proofs, Zcash, and garbled circuits are also introduced.
This document summarizes a blockchain technology workshop presented by Duru Turkoglu, PhD. The workshop covered the history and components of blockchain technology including public key cryptography, distributed systems, and applications. It discussed how blockchain provides an easy to transact and hard to modify distributed ledger through the use of cryptography and distributed consensus. Applications mentioned include cryptocurrencies, smart contracts, asset management, identity verification, and decentralized exchanges.
The document is an introduction to cryptography and digital signatures by Ian Curry from March 2001. It discusses the history of cryptography and the problem of key management. It then describes how public-key cryptography helped address key management issues for large networks by allowing secure distribution of public keys. The document also provides an overview of how Entrust uses a combination of symmetric and public-key cryptography to provide encryption, authentication, integrity, and non-repudiation for electronic communications like sending a secure electronic check. This includes digitally signing the check with a private key, encrypting it with a symmetric key, and securely delivering the symmetric key to the recipient using the recipient's public key.
1) Symmetric-key cryptography uses the same key to encrypt and decrypt data but requires a secure way to share the secret key between parties.
2) Public-key cryptography addresses this issue by using different but mathematically linked public and private keys, allowing secure communication without pre-shared keys.
3) Digital signatures use public-key cryptography to authenticate senders, working by encrypting a digest of the message with the sender's private key that can be decrypted and verified using their public key.
This document provides an overview of cryptography. It begins with an introduction and then defines cryptography as the practice of hiding information. The document discusses the purposes of cryptography which include authentication, privacy, integrity, and non-repudiation. It then describes the different types of cryptography including secret key cryptography and public key cryptography. Secret key cryptography uses a single key for encryption and decryption while public key cryptography uses separate public and private keys. The document concludes with a brief discussion of how the type of cryptography used depends on the requirements for speed or secrecy.
Conducting a NIST Cybersecurity Framework (CSF) AssessmentNicholas Davis
In today's ever-evolving cybersecurity landscape, organizations face an increasing number of threats. Conducting a NIST Cybersecurity Framework (CSF) assessment can be a valuable tool to identify, manage, and mitigate these risks. Let's explore how it can benefit your organization.
A NIST CSF assessment is not just about compliance; it's about proactively managing your cybersecurity posture. By identifying and addressing your vulnerabilities, you can reduce the likelihood and impact of cyberattacks. Additionally, the framework can help you communicate your security efforts effectively to internal and external stakeholders.
UW-Madison, Information Systems 371 - Decision Support SystemsNicholas Davis
Today, is Information Systems 371, I am lecturing about Decision Support Systems. In addition to covering the basics at a conceptual level, I am trying to get the students to think about the impact of IoT, 5G, and Artificial Intelligence, in terms of how Decision Support Systems are changing and what the new demands placed upon them will be.
This document summarizes a university lecture on blockchain and bitcoin. It begins with an overview of how the term "blockchain technology" can refer to different things like the Bitcoin blockchain, other cryptocurrencies, or smart contracts. It then defines what a blockchain is, including that it usually contains financial transactions, is replicated across peer-to-peer networks, and uses cryptography to prove identity and enforce access rights. The document contrasts public and private blockchains and how they differ in terms of who can write to the ledger. It also discusses key concepts like how blockchains achieve consensus when multiple blocks are created simultaneously and how network rules and upgrades are handled.
During the Spring semester, I teach a 3 credit survey course in software development, at UW-Madison (IS 371), which is the first in the series of courses in the Information Systems major track. As part of this course, I devote an entire lecture to discussing different types of software development (Agile, Waterfall, Extreme, Spiral, etc.) I hope it helps the students better understand the different types of software development styles, as well as the benefits and drawbacks of each. In my opinion, they need to learn early on that there is more than one way to go about a software development challenge, and they need to figure out which style works best for them.
Information systems 365 - Cloud and BYOD SecurityNicholas Davis
Today, in class, I will be covering the topics of Cloud and BYOD Information Security. The intent of the lecture is to introduce students to the general issues surrounding information security in these two areas.
Information Security Awareness: at Work, at Home, and For Your Kids Nicholas Davis
This is the security awareness presentation which I will be giving to Quartz Health Solutions, on October 24, 2018. If focuses in on three areas: information security best practices for work, at home, and also contains some tips for kids. Topics include: PHI, ePHI, HIPAA, Identity Theft, Social Engineering, phishing, password management, malware, insider threats, social networks, and mobile devices.
Information Systems 371 -The Internet of Things OverviewNicholas Davis
The document discusses the Internet of Things (IoT) including its history, definition, applications, trends and challenges. It provides details on the key concepts of IoT such as connecting physical devices to exchange data over the internet, examples of consumer and industrial applications, and issues regarding data privacy, security and device obsolescence. The document also outlines the exam schedule for the upcoming Information Systems 371 course.
A presentation about cyberwar basics, the past, present and future directions of cyberwar and some needed changes in technology and long standing societal attitudes, to combat this escalating threat
University of Wisconsin-Madison, Information Security 365/765 Course Summary,...Nicholas Davis
This document summarizes the key points from a university lecture on information security. It discusses topics covered during the semester including a guest speaker from the FBI, security controls, CIA triad, categories of controls, ingredients of security, technical weaknesses, defense in depth, risk analysis, hiring and termination practices, security policies, cloud security, BYOD, and more. The document recaps the various assignments and presentations given throughout the course.
Bringing the Entire Information Security Semester Together With a Team ProjectNicholas Davis
Absorbing information does no good, unless you are able to apply what you have learned. Each semester, I give my information security students a team project, in which they must use all the knowledge acquired during the semester, in combination with their ability to do Internet research, to deliver an overall information security assessment of a company of their choosing. To make it a challenge, I make them grade all the other teams in the class, but only give them enough points to distribute so that the average is 90. In grading their peers, they must make decisions about which presentations are excellent, and which are not.
The Deep and Dark Web - Spooky Halloween Information Security Lecture -- Info...Nicholas Davis
This presentation provides an overview of the deep web and discusses some of the dangers it poses. It defines the deep web and explains how it differs from the surface web. The presentation notes that the deep web is much larger than the surface web and contains dynamic, unlinked, private, and restricted content that search engines cannot access. It describes how tools like Tor can be used to anonymously access dark web sites ending in .onion and discusses some of the illegal activities that occur on the deep web, like drug trafficking, weapons sales, and hiring criminals. The presentation aims to educate information security professionals about the deep web so they can help address illegal activities occurring there.
Student Presentation Sample (Netflix) -- Information Security 365/765 -- UW-M...Nicholas Davis
The final assignment in the Information Security 365/765 course I teach at UW-Madison, is for teams of students to put together company focused IT security presentations, in which they take the concepts learned in class throughout the entire semester, and apply them to a real company. Here is a sample from Team Netflix! I am proud of the students, and feel that they have gained a solid foundation in the field of information security. Another semester come and gone!
Information Security Fall Semester 2016 - Course Wrap Up SummaryNicholas Davis
This presentation is a summary, for the students of the IS 365/765 course I teach, at the University of Wisconsin-Madison, providing a 104 slide reminder of the most important topics in Information Security, which we covered throughout the semester. Today is the last day of course material. We have 4 days of student team presentations, to follow.
A general education presentation, created to teach employees of an organization about Phishing, what it is, how to recognize it, avoid becoming a phishing victim, how to recognize common social engineering techniques, and what to do if you think you have been phished.
Information Security 365/765 Lecture 13 – Legal Regulations, Industry Compli...Nicholas Davis
Today's topic in the Information Security 365/765 class, which I teach at the University of Wisconsin-Madison.
Computer crimes and computer laws, Motives and profiles of attackers, Various types of evidence, Laws and acts to fight computer crime, Computer crime investigation process, Incident handling procedures, Ethics and best practices
2. Readings for Next Class
• Signing by FAX
• Secure Email
• Biometrics
• All articles are located in the
September 18 folder
3. Overview
Why is electronic privacy such a hot
topic these days?
Types of Cryptography
Steganography
What is a digital certificate?
What is PKI?
Why are these technologies important?
Trusted Root Authorities
Using digital certificates for email encryption
Key Escrow, the double edged sword
Integrating digital certificates into email for
Security
New uses for digital certificates
How is PKI related to SSL?
Using certificates for code signing of software
NSA conspiracy theories
Real world issues with PKI
Computer lab exercises
Discussion
4. Today’s Chocolate
Bar – Milky Way
• Created in 1924 by Frank C. Mars
• Frank Mars and Milton Hershey were
friends, but their different candy bar
ideologies drove them apart.
• Milky Way was the first “filled” candy bar.
Previously, all candy bars were flat
• The European version will float in a glass
of milk, the American version won’t
• A Milky Way wrapper from 1975 recently
sold for $16 in a collector’s magazine
• Originally there were two flavors, dark
chocolate and milk chocolate. The dark
chocolate version was discontinued in
1979, but came back in 2000 as “Milky
Way Midnight Bar”
5. Is the NSA Watching?
• Discussion of the Crypto AG article
• Discussion of NSA_key in Microsoft
Operating System
• What about UW-Madison?
6. Whay is Electronic Privacy
Such a Hot Topic Today?
• Evolution of the Internet,
commerce, banking, healthcare
• Dependence on Email
• Government regulations, SOX,
HIPAA, GLB, PCI, FERPA
• Public Image
• Business warehousing
• Industrial Espionage
• The United States government!
7. Encryption
• To encode information in such a way as
to make it unreadable by anyone aside
from its intended recipient
• Symmetric Encryption, where a single
secret key is used for both encryption and
decryption.
• Asymmetric Encryption, where a pair of
keys is used -- one for Encryption and the
other for Decryption.
8. Symmetric Encryption
• Simple substitution
C=5
O=1
W=7
517 = COW
• Shifting
Add two letters to each character (letter + 2)
AMU = COW (A + 2 = C, M + 2 = 0, etc)
Hmm, everything appears to = COW
9. Advantages and Disadvantages of
Symmetric Encryption
• Easy to use
• Decryption key can be memorized
• Easy to determine patterns and
guess decryption key (frequency of
letters in the English language)
• Anyone with the key can decrypt the
message even if it was not intended
for them
10. Asymmetric Encryption
• Uses one key to encrypt and a
different key to decrypt
• Public key to encrypt
• Private key to decrypt
• Keys are related, but not the same
11. Advantages and Disadvantages of
Asymmetric Encryption
• Much stronger, more complex keys than
used in symmetric encryption
• Only the intended recipient can REALLY
read the message since only they
possess the private key
• Far more complex than symmetric
encryption, requires larger infrastructure
to manage
• If private key is lost, you are out of luck
12. Yesterday’s Extra Credit
• Take a bow James Loethen, Jeff
Roller and Zach Tranmer! I admire
your investigative abilities
• Decrypted message was: “the
secret agent is a Holstein cow”
• This was symmetric encryption,
where the key was known to the
application
• http://www.yellowpipe.com/yis/tools/en
13.
14.
15. Overt vs. Covert Encryption
• When the US government intercepts
“VGhlIHNlY3JldCBhZ2VudCBpcyBhI
hvbHN0ZWluIGNvdyE=“, from Kemps Ice
Cream factory email system, they know
that a sneaky cow is up to no good.
This message is overtly encrypted
17. Covert Encryption
• Covertly encrypted messages are
much harder to discover
• This one was encoded in a graphics
file
• With overt encryption it is evident
that you are up to something that
you want to keep secret
• With covert encryption, nobody
suspects anything is wrong
18. Covert Encryption is Known as
Steganography
• Not related to Stegosaurus, which
was a dinosaur!
19. Steganography
• Steganography is
the art and
science of writing
hidden messages
in such a way that
no one apart from
the sender and
intended recipient
even realizes
there is a hidden
message
20. How to Determine if Steganography is
Being employed
• Compare sizes of graphics relative
to resolution.
• A low resolution graphic with a large
file size is a good hint that
Steganography is being used
• Image of cow and dolphin
• 71 KB vs 616 KB……Hmmmmm
22. Discussion Topic One
• Do you think the threat of Email
eavesdropping is real?
• What about the government’s argument
about Email being like a “postcard?”
• Should Target be allowed to look at
Walmart emails on a public network?
• Are you angry now, or just afraid?
• Who has the responsibility in this
situation?
28. Digital Certificates Continued
Digital Certificate
Electronic Passport
Good for authentication
Good non-repudiation
Proof of authorship
Proof of non-altered content
Encryption!
Better than username - password
30. Public and Private Keys
The digital certificate has two parts, a
PUBLIC key and a PRIVATE key
The Public Key is distributed to
everyone
The Private Key is held very closely
And NEVER shared
Public Key is used for encryption and
verification of a digital signature
Private Key is used for Digital signing and
decryption
32. Getting Someone’s Public Key
The Public Key must be shared to be
Useful
It can be included as part of your
Email signature
It can be looked up in an LDAP
Directory
Can you think of the advantages and
disadvantages of each method?
34. What is PKI?
• PKI is an acronym for Public Key
Infrastructure
• It is the system which manages and
controls the lifecycle of digital
certificates
• The PKI has many features
35. What Is In a PKI?
• Credentialing of individuals
• Generating certificates
• Distributing certificates
• Keeping copies of certificates
• Reissuing certificates
• Revoking Certificates
36. Credentialing
• Non technical, but the most
important part of a PKI!
• A certificate is only as trustworthy as
the underlying credentialing and
management system
• Certificate Policies and Certificate
Practices Statement
37. Certificate Generation and Storage
• How do you know who you are
dealing with in the generation
process?
• Where you keep the certificate is
important
38. Distributing Certificates
• Can be done
remotely – benefits
and drawbacks
• Can be done face
to face – benefits
and drawbacks
39. Keeping Copies – Key Escrow
• Benefit –
Available in case
of emergency
• Drawback – Can
be stolen
• Compromise is
the best!
• Use Audit Trails,
separation of
duties and good
accounting
controls for key
escrow
40. Certificate Renewal
• Just like your passport, digital certificates
expire
• This is for the safety of the organization
and those who do business with it
• Short lifetime – more assurance of
validity but a pain to renew
• Long lifetime – less assurance of validity,
but easier to manage
• Use a Certificate Revocation List if you
are unsure of certificate validity
41. Trusted Root Authorities
• A certificate issuer
recognized by all
computers around
the globe
• Root certificates
are stored in the
computer’s central
certificate store
• Requires a
stringent audit and
a lot of money!
43. Using Certificates to Secure Email
• Best use for certificates, in my
opinion
• Digital certificate provides proof that
the email did indeed come from the
purported sender
• Public key enables encryption and
ensures that the message can only
be read by the intended recipient
44. Secure Email is Called
S/MIME
• S/MIME = Secure
Multipurpose Mail
Extensions
• S/MIME is the
industry standard,
not a point
solution, unique to
a specific vendor
45. Digital Signing of Email
• Proves that the email came from
you
• Invalidates plausible denial
• Proves through a checksum that the
contents of the email were not
altered while in transit
• Provides a mechanism to distribute
your public key
• Does NOT prove when you sent the
email
46. Digital Signatures Do Not Prove When
a Message or Document Was Signed
You need a
neutral third party
time stamping
service, similar to
how hostages
often have their
pictures taken in
front of a
newspaper to
prove they are still
alive!
47. Send Me a Signed Email, Please,
I Need Your Public Key
48. Using a Digital Signature for Email
Signing
Provides proof that the
email came from the
purported sender…Is
this email really from
Vice President Cheney?
Provides proof that the
contents of the email
have not been altered
from the original
form…Should we
really invade Canada?
51. What if This Happens at UW-
Madison?
Could cause harm in
a critical situation
Case Scenario
Multiple hoax emails
sent with Chancellor’s
name and email.
When real crisis
arrives, people might
not believe the
warning.
It is all about trust!
52. Digital Signing Summary
• Provides proof of the
author
• Testifies to message
integrity
• Valuable for both
individual or mass
email
• Supported by
Wiscmail Web client
(used by 80% of
students)
53. What Encryption Does
Encrypting data with a
digital certificate
Secures it end to end.
• While in transit
• Across the network
• While sitting on email
servers
• While in storage
• On your desktop
computer
• On your laptop
computer
• On a server
54. Encryption Protects the Data At Rest
and In Transit
Physical theft from office
Physical theft from airport
Virtual theft over the network
55. Why Encryption is Important
• Keeps private information private
• HIPAA, FERPA, SOX, GLB compliance
• Proprietary research
• Human Resource issues
• Legal Issues
• PR Issues
• Industrial Espionage
• Over-intrusive Government
• You never know who is
listening and watching!
56. What does it actually look like in practice?
-Sending-
57. What does it actually look like in
practice (unlocking my private key)
-receiving-
58. What does it actually look like in practice?
-receiving- (decrypted)
62. New Applications Coming
Online This Summer!
• Bye bye old ID card!
• Hello Smartcard!
• One card does it all!
• Email encryption,
document signing,
web access to
sensitive applications
and whole disk
encryption
63. Digital Certificates For Machines Too
• SSL – Secure
Socket Layer
• Protection of data
in transit
• Protection of data
at rest
• Where is the
greater threat?
• Our certs protect
both!
64. Benefits of Using Digital
Certificates
Provide global assurance of your identity,
both internally and externally to the
UW-Madison
Provide assurance of message authenticity
and data integrity
Keeps private information private, end to
end, while in transit and storage
You don’t need to have a digital certificate
To verify someone else’s digital signature
Can be used for individual or generic mail
accounts.
65. Who Uses Digital Certificates
at UW-Madison?
DoIT
UW Police and Security
Office of the Registrar
Office of Financial Aid
Office of Admissions
Primate Research Lab
Medical School
Bucky Badger, because he’s a team
player and slightly paranoid about his
basketball plays being stolen
66. Who Uses Digital Certificates
Besides UW-Madison?
US Department of Defense
US Department of Homeland
Security
All Western European countries
New US Passport
Dartmouth College
University of Texas at Austin
Johnson & Johnson
Raytheon
Others
67. The Telephone Analogy
When the
telephone was
invented, it was
hard to sell.
It needed to
reach critical
mass and then
everyone wanted
one.
68. That All Sounds Great in Theory,
But Do I Really Need It?
• The world seems
to get along just
fine without digital
certificates…
• Oh, really?
• Let’s talk about
some recent
stories
70. How Do Users Feel About the
Technology?
• Ease of use
• Challenges
• Changes in how they do their daily
work
• Benefits
• Drawbacks
71. It Really Is Up To You!
• Digital certificates / PKI is not hard to
implement
• It provides end to end security of
sensitive communications
• It is comprehensive, not a mix of point
solutions
• You are the leaders of tomorrow, make
your choices count by pushing for
secure electronic communications!
72. Lab Exercises
• Crack a password protected file to
show how weak password
protection really is
• Digitally sign an email to each other
• Encrypt an email to each other