Submitting CSR and CA

Posted by in Security+ | 0 comments

If you’re planning on taking the Security+ exam, you should have a basic understanding on how to use a certificate signing request (CSR) when requesting certificates from a CA.

For example, can you answer this question?

Q. You need to submit a CSR to a CA. Which of the following would you do FIRST?

A. Generate a new RSA-based session key.

B. Generate a new RSA-based private key.

C. Generate the CRL.

D. Implement OCSP.

More, do you know why the correct answer is correct and the incorrect answers are incorrect? The answer and explanation is available at the end of this post.

Get Certified Get Ahead

Self-Signed Certificates

It is possible to create a CA and use self-signed certificates. For example, an administrator can use Active Directory Certificate Services (AD CS) on Windows Server to create a CA and issue certificates to company-owned web servers. AD CS is built in to Windows Server products, so this is certainly less expensive than purchasing a certificate from a public CA.

However, certificates issued by this CA will not be trusted by default. If a user connects to this web server and establishes an HTTPS session, the web browser will show an error. Depending on the web browser, it may indicate that the issuer of a certificate (the CA) is not recognized or indicate that the site’s certificate is not trusted. The error is often accompanied with warning icons and other notes encouraging the users not to continue.

CSR

This is not acceptable for an e-commerce web site. Imagine if Lisa has her credit card in hand ready to buy a product, and then sees errors indicating trust problems. She very likely won’t continue.

If only employees use this web site, they could ignore the errors and click through to establish the connection. However, this may breed complacency. When they go to a public site and see this same type of error, they may ignore the error and continue.

Instead, an administrator can copy the CA’s root certificate to the user’s computer. Web browsers will then trust the certificate from the company web site, eliminating the errors.

CompTIA Security+ Study Guide

The 501 Version of the Study Guide

The CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide is an update to the top-selling SY0-201, SY0-301, and SY0-401 study guides, which have helped thousands of readers pass the exam the first time they took it.  It includes the same elements readers raved about in the previous three versions.

Each of the eleven chapters presents topics in an easy to understand manner and includes real-world examples of security principles in action.

You’ll understand the important and relevant security topics for the Security+ exam, without being overloaded with unnecessary details. Additionally, each chapter includes a comprehensive review section to help you focus on what’s important.



Over 300 realistic practice test questions with in-depth explanations will help you test your comprehension and readiness for the exam. The book includes:

  • A 75 question pre-test
  • A 75 question post-test
  • Practice test questions at the end of every chapter.

Each practice test question includes a detailed explanation to help you understand the content and the reasoning behind the question. You’ll be ready to take and pass the exam the first time you take it.

If you plan to pursue any of the advanced security certifications, this guide will also help you lay a solid foundation of security knowledge. Learn this material, and you’ll be a step ahead for other exams. This SY0-501 study guide is for any IT or security professional interested in advancing in their field, and a must-read for anyone striving to master the basics of IT security.

Kindle edition also available.

Registration

Users and systems request certificates from a CA using a registration process. In some cases, a user enters information manually into a web site form. In other cases, a user sends a specifically formatted file to the CA. Within a domain, the system handles much of the process automatically.

As an example, imagine I wanted to purchase a certificate for GetCertifiedGetAhead.com for secure HTTPS sessions. I would first create a public and private key pair. Many programs are available to automate this process. For example, OpenSSL is a command-line program that is included in many Linux distributions. It creates key pairs in one command and allows you to export the public key to a file in a second command. Technically, OpenSSL and similar applications create the private key first. However, these applications appear to create both keys at the same time.

Full Security+ Course

SY0-501 Full Security+ Course

Helping you Pass the First Time

Online access includes all of the content from the

CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide

  • Introduction
  • About the exam (including information on the number of questions, test duration, passing score, types of questions and more. Also includes a listing of the exam objectives)
  • 75 question pre-assessment exam
  • Mastering Security Basics (full content from Chapter 1 of the study guide including the exam topic review and 15 practice test questions)
  • Understanding Identity and Access Management (full content from Chapter 2 of the study guide including the exam topic review and 15 practice test questions)
  • Exploring Network Technologies and Tools (full content from Chapter 3 of the study guide including the exam topic review and 15 practice test questions)
  • Securing Your Network (full content from Chapter 4 of the study guide including the exam topic review and 15 practice test questions)
  • Securing Hosts and Data (full content from Chapter 5 of the study guide including the exam topic review and 15 practice test questions)
  • Comparing Threats, Vulnerabilities, and Common Attacks (full content from Chapter 6 of the study guide including the exam topic review and 15 practice test questions)
  • Protecting Against Advanced Attacks (full content from Chapter 7 of the study guide including the exam topic review and 15 practice test questions)
  • Using Risk Management Tools (full content from Chapter 8 of the study guide including the exam topic review and 15 practice test questions)
  • Implementing Controls to Protect Assets (full content from Chapter 9 of the study guide including the exam topic review and 15 practice test questions)
  • Understanding Cryptography and PKI (full content from Chapter 10 of the study guide including the exam topic review and 15 practice test questions)
  • Implementing Policies to Mitigate Risks (full content from Chapter 11 of the study guide including the exam topic review and 15 practice test questions)
  • 75 question post-assessment exam
  • Glossary

Get the SY0-501 Full Security+ Course Here


Test your readiness with these quality materials

Random 75-question tests

Random practice tests from the all of the practice test questions in the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide. All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect.

3 sets Performance-based Questions

Three new sets of performance-based questions with a total of 30 questions. These new questions use a new testing engine that includes realistic drag and drop, matching, sorting, and fill in the blank questions.

Flashcard Set

  • 494 Online Security+ Glossary Flashcards
  • 222 Online Security+ Acronyms Flashcards
  • 223 Online Security+ Remember This Slide from the popular CompTIA Security+ Get Certified Get Ahead: SY0-501 Study Guide

Audio - SY0-501 Security+ Remember This Audio Files

Learn by Listening. Over one hour and 20 minutes of audio (MP3 downloads.)

Audio - SY0-501 Security+ Question and Answer Audio Files

Learn by Listening. Over two hours hour and 53 minutes of audio (MP3 downloads.)

Bonus #1

Audio from the end of chapter reviews from each of the chapters in the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide. Over one hour and 40 minutes of additional audio.

Bonus #2

Access to all of the online content that is available for free to anyone that purchases the CompTIA Security+ Get Certified Get Ahead: SY0-501 Study Guide. This includes labs, extra practice test questions, and supplementary materials

Bonus #3 

Access the study materials for a total of 60 days because sometimes life happens.

Get the SY0-501 Full Security+ Course Here

I would then put together a certificate signing request (CSR) for the certificate, including the purpose of the certificate and information about the web site, the public key, and me. Most CAs require CSRs to be formatted using the public-key cryptography standards (PKCS) #10 specification.

I then send the CSR to the CA. The CA validates my identity and creates a certificate with the public key. The validation process is different based on the usage of the certificate. In some cases, it includes extensive checking, and in other cases, verification comes from the credit card I use to pay.

I can then register this certificate with my web site along with the private key. Any time someone initiates a secure HTTPS connection, the web site sends the certificate with the public key and the TLS/SSL session creates the session.

In large organizations, a registration authority (RA) can assist the CA by collecting registration information. The RA never issues certificates. Instead, it only assists in the registration process.

Remember this

You typically request certificates using a certificate signing request (CSR). The first step is to create the RSA-based private key, which is used to create the public key. You then include the public key in the CSR and the CA will embed the public key in the certificate.

Security+ Practice Test Questions

SY0-501 Practice Test Questions 

Over 300 realistic Security+ practice test questions

All questions include explanations so you'll know why the correct answers are correct,

and why the incorrect answers are incorrect.

Pass the Security+ Exam

the First Time You Take It

Multiple quiz formats to let you use these questions based on the way you learn.
  • Learn mode - randomized. View each of the questions in random order. Learn mode allows you to keep selecting answers until you select the correct answer. Once you select the correct answer, you'll see the explanation. Click here to see how learn mode works.
  • Learn mode - not randomized. View each of the questions in the same order. Use this if you want to make sure that you see all of the questions. Learn mode allows you to keep selecting answers until you select the correct answer. Once you select the correct answer, you'll see the explanation. Click here to see how learn mode works.
  • Test mode - randomized. View each of the questions in random order. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.
  • Test mode - not randomized. View each of the questions in the same order. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.
  • Test mode - 75 random questions. View 75 random questions from the full test bank similar to how the Security+ exam has a potential maximum of 75 multiple choice questions. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.

Get the full bank of SY0-501 Practice Test Questions Here

 SY0-501 Practice Test Questions


INCLUDES QUESTIONS TO HELP YOU PREPARE

FOR THE NEW PERFORMANCE BASED QUESTIONS 

Bonus - Performance Based Questions

Three sets of performance-based questions including over 30 questions. These questions show you what you can expect in the live exam. They include drag and drop, matching, sorting, and fill in the blank questions. See a demo here.

Bonus - Extra Practice Test Questions

New multiple-choice questions in the extra test bank. Questions are added occasionally. You can see what has been added recently here.

Get the full bank of Security+ (SYO-501) Practice Test Questions Here

Get the full bank of Security+ Practice Test Questions

Click here if you're looking for SY0-501 Full Study Package


 

Q. You need to submit a CSR to a CA. Which of the following would you do FIRST?

A. Generate a new RSA-based session key.

B. Generate a new RSA-based private key.

C. Generate the CRL.

D. Implement OCSP.

Answer is B. You create the RSA-based private key first and then create the matching public key from it, which you include in the certificate signing request (CSR) that you send to the Certificate Authority (CA).

The RSA algorithm technically creates the private key first, but most applications that create the key pair appear to create them at the same time. A session key is a symmetric key, but RSA is an asymmetric algorithm.

The CA generates the certificate revocation list (CRL) to identify revoked certificates.

Online Certificate Status Protocol (OCSP) is an alternative to using CRLs to validate certificates, but it is not required.

See Chapter 10 of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide for more information on PKI components.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

CompTIA Security+ Get Certified Get Ahead: SY0-501 Study Guide

Subscribe To Our Newsletter

Join our mailing list and get a free excerpt of the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide.  This excerpt includes the introduction and Chapter 1. 

You have Successfully Subscribed!

Get Certified Get Ahead is a participant in the Amazon Services LLC Associates Program,
an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Copyright © 2015 Get Certified Get Ahead. All Rights Reserved.