To generate a self-signed SSL certificate using the OpenSSL, complete the following steps: Write down the Common Name (CN) for your SSL Certificate. The CN is the fully qualified name for the system that uses the certificate. Openssl genrsa -out rsa.private 1024 4. The private key is generated and saved in a file named 'rsa.private' located in the same folder.

• Openssl Generate Certificate And Private Key Code
• Openssl Generate Certificate And Private Key Password
• Openssl Create Certificate With Existing Private Key
• Openssl Generate Certificate And Private Key West
• Openssl Generate Rsa Private Key

While Encrypting a File with a Password from the Command Line using OpenSSLis very useful in its own right, the real power of the OpenSSL library is itsability to support the use of public key cryptograph for encrypting orvalidating data in an unattended manner (where the password is not required toencrypt) is done with public keys.

The Commands to Run

Generate a 2048 bit RSA Key

You can generate a public and private RSA key pair like this:

openssl genrsa -des3 -out private.pem 2048

That generates a 2048-bit RSA key pair, encrypts them with a password you provideand writes them to a file. You need to next extract the public key file. You willuse this, for instance, on your web server to encrypt content so that it canonly be read with the private key.

Export the RSA Public Key to a File

This is a command that is

openssl rsa -in private.pem -outform PEM -pubout -out public.pem

The -pubout flag is really important. Be sure to include it.

Next open the public.pem and ensure that it starts with-----BEGIN PUBLIC KEY-----. This is how you know that this file is thepublic key of the pair and not a private key.

To check the file from the command line you can use the less command, like this:

less public.pem

Do Not Run This, it Exports the Private Key

A previous version of the post gave this example in error.

openssl rsa -in private.pem -out private_unencrypted.pem -outform PEM

The error is that the -pubout was dropped from the end of the command.That changes the meaning of the command from that of exporting the public keyto exporting the private key outside of its encrypted wrapper. Inspecting theoutput file, in this case private_unencrypted.pem clearly shows that the keyis a RSA private key as it starts with -----BEGIN RSA PRIVATE KEY-----.

Visually Inspect Your Key Files

It is important to visually inspect you private and public key files to makesure that they are what you expect. OpenSSL will clearly explain the nature ofthe key block with a -----BEGIN RSA PRIVATE KEY----- or -----BEGIN PUBLIC KEY-----.

You can use less to inspect each of your two files in turn:

• less private.pem to verify that it starts with a -----BEGIN RSA PRIVATE KEY-----
• less public.pem to verify that it starts with a -----BEGIN PUBLIC KEY-----

The next section shows a full example of what each key file should look like.

The Generated Key Files

The generated files are base64-encoded encryption keys in plain text format.If you select a password for your private key, its file will be encrypted withyour password. Be sure to remember this password or the key pair becomes useless.

The private.pem file looks something like this:

The public key, public.pem, file looks like:

Protecting Your Keys

Depending on the nature of the information you will protect, it’s important tokeep the private key backed up and secret. The public key can be distributedanywhere or embedded in your web application scripts, such as in your PHP,Ruby, or other scripts. Again, backup your keys!

Remember, if the key goes away the data encrypted to it is gone. Keeping aprinted copy of the key material in a sealed envelope in a bank safety depositbox is a good way to protect important keys against loss due to fire or harddrive failure.

Oh, and one last thing.

If you, dear reader, were planning any funny business with the private key that I have just published here. Know that they were made especially for this series of blog posts. I do not use them for anything else.

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Generate a certificate signing request

Before you can install a Secure Socket Layer (SSL) certificate, you must first generate a certificate signing request (CSR). You can do this by using one of the following methods:

OpenSSL

The following sections describe how to use OpenSSL to generate a CSR for a single host name. If you want to generate a CSR for multiple host names, we recommend using the Cloud Control Panel or the MyRackspace Portal.

Install OpenSSL

Check whether OpenSSL is installed by using the following command:

• CentOS® and Red Hat® Enterprise Linux®

  The following output provides an example of what the command returns:

• Debian® and the Ubuntu® operating system

  The following output provides an example of what the command returns:

If the preceding packages are not returned, install OpenSSL by running the following command:

• CentOS and Red Hat

• Debian and the Ubuntu operating system

Generate the RSA key

Run the following commands to create a directory in which to store your RSA key, substituting a directory name of your choice:

Run the following command to generate a private key:

Create a CSR

Run the following command to create a CSR with the RSA private key (output is in Privacy-Enhanced Mail (PEM) format):

When prompted, enter the necessary information for creating a CSR by using the conventions shown in the following table.

Note: You cannot use the following characters in the Organization Name or Organizational Unit fields: < > ~ ! @ # $ % ^ * / ( ) ? . , &

Openssl Generate Certificate And Private Key Code

Warning: Leave the challenge password blank (press Enter).

Verify your CSR

Run the following command to verify your CSR:

After you have verified your CSR, you can submit it to a CA to purchase an SSL certificate.

Windows IIS Manager

Use the following steps to generate a CSR by using Windows IIS Manager:

Note: The following steps are for IIS 8 or IIS 8.5 on Windows Server 2012.

Openssl Generate Certificate And Private Key Password

1. Open IIS Manager.
2. In the left-hand Connections pane, click the server for which you want to generate a CSR.
3. In the center server Home pane under the IIS section, double-click Server Certificates.
4. In the right-hand Actions pane, click Create Certificate Request.

5. In the Request Certificate wizard, on the Distinguished Name Properties page, enter the following information and then click Next.

   Field	Explanation	Example
   Common Name	The fully qualified domain name to which the certificate applies. The domain names example.com and www.example.com are distinct from each other, so be sure to submit your request for the right domain. If you are purchasing a wildcard certificate, use *.example.com.	example.com
   Organization Name	The exact legal name of your organization. The CA might seek to confirm that your organization is real and legally registered, so don’t abbreviate words that aren’t abbreviated in the organization’s legal name.	Example Inc.
   Organizational Unit	The branch of your organization that is making the request.	Marketing
   City/locality	The city where your organization is legally located. Do not abbreviate the city name.	San Antonio
   State/province	The state or province where your organization is legally located. Do not abbreviate the state or province name.	Texas
   Country/region	The two-letter ISO abbreviation for your country.	US

6. On the Cryptographic Server Provider Properties page, enter the following information and then click Next.

   • Cryptographic service provider: Unless you have a specific cryptographic provider, use the default selection.
   • Bit length: 2048 is the recommended bit length.
7. On the File Name page, enter the location where you want to save the certificate request file and then click Finish.

After you have generated the CSR, you can submit it to a CA to purchase an SSL certificate.

Cloud Control Panel

Rackspace provides the CSR Generator for generating a CSR. The CSR Generator shows you the CSRs that you currently have and lets you create new CSRs with a simple form. After you have entered your details, the generator combines them with your private key so that you can submit the combined encoded information to a CA.

Openssl Create Certificate With Existing Private Key

When you are done with the generator, you can return to the Cloud Control Panel by clicking any of the links in the top navigation or by going to login.rackspace.com and selecting Rackspace Cloud from the drop-down product menu in the top navigation bar.

Access the CSR Generator

Access the CSR Generator directly or through the Control Panel by using the following steps:

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1. Log in to the Cloud Control Panel and select Rackspace Cloud from the drop-down product menu in the top navigation bar.
2. In the top navigation bar, click Servers > Cloud Servers.
3. Click the name of the server for which you want to generate a CSR.
4. In the right-hand Managing Your Server section under Help me with, click Generate a CSR.

The generator lists your existing CSRs, if you have any, organized by domain name.

Generate a CSR

Openssl Generate Certificate And Private Key West

1. Click Create CSR.

2. Enter the following information, which will be associated with the CSR:

   Field	Explanation	Example
   Domain Name	The fully qualified domain name to which the certificate applies. The domain names example.com and www.example.com are distinct from each other, so be sure to submit your request for the right domain. If you want to secure both domains, you can use the Alt Names field. If you are purchasing a wildcard certificate, use *.example.com.	example.com
   Alt Names	(Optional) Additional domains that you want to add to the request. Each CA treats these differently, and the CA might charge for additional names. You can submit a comma-separated list.	www.example.com, secure.example.com
   Email Address	(Optional) A contact email address for the certificate.	support@example.com
   Organization Name	The exact legal name of your organization. The CA might seek to confirm that your organization is real and legally registered, so don’t abbreviate words that aren’t abbreviated in the organization’s legal name.	Example Inc.
   Organizational Unit	(Optional) The branch of your organization that is making the request.	Marketing
   City	The city where your organization is legally located. Do not abbreviate the city name.	San Antonio
   State or Province	The state or province where your organization is legally located. Do not abbreviate the state or province name.	Texas
   Country	Choose your country from the drop-down menu. The two-letter ISO abbreviation for your country is included in the CSR.	United States
   Private Key Bit Length	Key sizes smaller than 2048 are considered insecure and might not be accepted by a CA.	1024,2048,4096
   Hashing Algorithm	Both algorithms are currently trusted in mainstream browsers and offer industry recommended security. SHA-512 requires additional CPU processing.	SHA-256, SHA-512

   Note: You cannot use the following characters in the Organization Name or Organizational Unit fields: < > ~ ! @ # $ % ^ * / ( ) ? . , &

3. After you have entered all the required information, click Create CSR.

Openssl Generate Rsa Private Key

It can take between 5 and 60 seconds for the CSR to be generated. You might need to refresh the page that displays your CSRs before the new CSR is listed.

View CSR details

When CSR has been generated, you can click its UUID (unique identifier) in the CSR list to view its details screen.

This screen displays the information that you provided, the text of the CSR, and its associated private key.

Submit the CSR to the CA

The text in the Certificate Request field is the CSR. It contains encoded details of the CSR and your public key.

To request your SSL certificate, copy the Certificate Request text and submit it to your CA. Include all the text, including the BEGIN and END lines at the beginning and end of the text block.

Install the private key

Copy the private key to the server that will host the certificate. See your application documentation to determine where to install the private key and certificate on your server.

MyRackspace Portal

If you are a Managed or Dedicated customer, you can request a CSR through the MyRackspace Portal by using the following steps:

1. Log in to the MyRackspace Portal and select Dedicated Hosting from the drop-down product menu in the top navigation bar.
2. In the top navigation bar, click Tickets > Create Ticket.
3. On the Tickets / Create New Ticket page, select Generate Certificate Signing Request (CSR) from the Subject drop-down list.

4. Enter the following information in the Ticket Details section:

   Field	Explanation	Example
   Device(s)	The server or servers for which you want to generate a CSR. Use the drop-down menu to select your servers.
   Common Name	The fully qualified domain name to which the certificate applies. The domain names example.com and www.example.com are distinct from each other, so be sure to submit your request for the right domain. If you want to secure both domains, you can use the Alt Names field. If you are purchasing a wildcard certificate, use *.example.com.	example.com
   Alt. Names	(Optional) Additional domains that you want to add to the request. Each CA treats these differently, and the CA might charge for additional names. You can submit a comma-separated list.	www.example.com, secure.example.com
   Email Address	(Optional) A contact email address for the certificate.	support@example.com
   Organization	The exact legal name of your organization. The CA might seek to confirm that your organization is real and legally registered, so don’t abbreviate words that aren’t abbreviated in the organization’s legal name.	Example Inc.
   Organizational Unit	(Optional) The branch of your organization that is making the request.	Marketing
   Locality (City)	The city where your organization is legally located. Do not abbreviate the city name.	San Antonio
   State or Province Name	The state or province where your organization is legally located. Do not abbreviate the state or province name.	Texas
   Country	Choose your country from the drop-down menu. The two-letter ISO abbreviation for your country is included in the CSR.	United States

   Note: The bit length is automatically set to 2048.

5. Click Create Ticket.

Next steps

Reference

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