Cryptography Tutorials - Herong's Tutorial Examples

∟OpenSSL Generating and Signing CSR

∟Generating Certificate Signing Request (CSR)

This section provides a tutorial example on how to generate a CSR (Certificate Signing Request) for your public key with OpenSSL.

In order to send your public key to a CA for signing, you need to put the public key in a file called certificate signing request (CSR). Here is how to use the "req" command to do this: 

>openssl req -new -key herong_rsa_des.key -out herong.csr 
   -config openssl.cnf

Enter pass phrase for herong_rsa_des.key:
You are about to be asked to enter information that will be incorp...
into your certificate request.
What you are about to enter is what is called a Distinguished Name...
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) []:CN
State or Province Name (full name) []:PN
Locality Name (eg, city) []:LN
Organization Name (eg, company) []:ON
Organizational Unit Name (eg, section) []:UN
Common Name (eg, YOUR name) []:Herong Yang
Email Address []:.

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:myreq
An optional company name []:

>type herong.csr
-----BEGIN CERTIFICATE REQUEST-----
MIIBETCBvAIBADBXMQswCQYDVQQGEwJDTjELMAkGA1UECBMCUE4xCzAJBgNVBAcT
AkNOMQswCQYDVQQKEwJPTjELMAkGA1UECxMCVU4xFDASBgNVBAMTC0hlcm9uZyBZ
YW5nMFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAKnmGcbuiAGG2XKek5LbVwF7AoT8
HuNXXip7KyWevbrFlSxJWSjfpmeGJo7/Nsw6hFwor28RyAy1wsW5BNYOXdECAwEA
AaAAMA0GCSqGSIb3DQEBBAUAA0EALE+d7H514HyQXu2CgwXYDvqZRngFLZFdGxQN
6AtEXXV+eC2c+URNBcmoF3oghJdPqZv7D1nZ7EBf20XSWzioQA==
-----END CERTIFICATE REQUEST-----

Note that the certificate is also saved in an encoded format called PEM.

Last update: 2013.

Table of Contents

 About This Book

 Cryptography Terminology

 Cryptography Basic Concepts

 Introduction to AES (Advanced Encryption Standard)

 Introduction to DES Algorithm

 DES Algorithm - Illustrated with Java Programs

 DES Algorithm Java Implementation

 DES Algorithm - Java Implementation in JDK JCE

 DES Encryption Operation Modes

 DES in Stream Cipher Modes

 PHP Implementation of DES - mcrypt

 Blowfish - 8-Byte Block Cipher

 Secret Key Generation and Management

 Cipher - Secret Key Encryption and Decryption

 Introduction of RSA Algorithm

 RSA Implementation using java.math.BigInteger Class

 Introduction of DSA (Digital Signature Algorithm)

 Java Default Implementation of DSA

 Private key and Public Key Pair Generation

 PKCS#8/X.509 Private/Public Encoding Standards

 Cipher - Public Key Encryption and Decryption

 MD5 Mesasge Digest Algorithm

 SHA1 Mesasge Digest Algorithm

 OpenSSL Introduction and Installation

 OpenSSL Generating and Managing RSA Keys

 OpenSSL Managing Certificates

►OpenSSL Generating and Signing CSR

 Why Certificates Need to Be Signed by CA?

►Generating Certificate Signing Request (CSR)

 Viewing Components of Certificate Signing Request

 Signing a Certificate Signing Request

 OpenSSL Validating Certificate Path

 "keytool" and "keystore" from JDK

 "OpenSSL" Signing CSR Generated by "keytool"

 Migrating Keys from "keystore" to "OpenSSL" Key Files

 Certificate X.509 Standard and DER/PEM Formats

 Migrating Keys from "OpenSSL" Key Files to "keystore"

 Using Certificates in IE (Internet Explorer)

 Using Certificates in Firefox

 Using Certificates in Google Chrome

 Outdated Tutorials

 References

 PDF Printing Version