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Generate CSR - OpenSSL
Introduction
This article provides step-by-step instructions for generating a Certificate Signing Request (CSR) in OpenSSL. This is most commonly required for web servers such as Apache HTTP Server and NGINX. If this is not the solution you are looking for, please search for your solution in the search bar above.
Assembly A is created with a strong name using one of the following methods: Using a development environment that supports creating strong names, such as Visual Studio. Creating a cryptographic key pair using the Strong Name tool (Sn.exe) and assigning that key pair to the assembly using either a command-line compiler or the Assembly Linker (Al.exe). The Windows SDK provides both Sn.exe. Generate strong name key file. Create and sign an assembly with a strong name by using Visual Studio. In Solution Explorer, open the shortcut menu for the project, and then choose Properties. Choose the Signing tab. Select the Sign the assembly box. In the Choose a strong name key file box, choose Browse, and then navigate to the key file.
In most software that generates RSA private keys, including openssl's, the private key is represented as a PKCS#1 RSAPrivatekey object or some variant thereof: A.1.2 RSA private key syntax. An RSA private key should be represented with the ASN.1 type RSAPrivateKey.
Switch to a working directory
GNU/Linux & Mac OS X users:
Open a terminal and browse to a folder where you would like to generate your keypair
Windows Users:
Navigate to your OpenSSL 'bin' directory and open a command prompt in the same location.
Generate a CSR & Private Key:
openssl req -out CSR.csr -new -newkey rsa:2048 -keyout privatekey.key
To generate a 4096-bit CSR you can replace the rsa:2048 syntax with rsa:4096 as shown below.
openssl req -out CSR.csr -new -newkey rsa:4096 -keyout privatekey.key
Note: You will be prompted to enter a password in order to proceed. Keep this password as you will need it to use the Certificate.
Fill out the following fields as prompted:
Note: The following characters can not be accepted: < > ~ ! @ # $ % ^ * / ( ) ?.,&
Openssl Generate Rsa Certificate
| Field | Example |
|---|---|
| Country Name | US (2 Letter Code) |
| State or Province | New Hampshire (Full State Name) |
| Locality | Portsmouth (Full City name) |
| Organization | GMO GlobalSign Inc (Entity's Legal Name) |
| Organizational Unit | Support (Optional, e.g. a department) |
| Common Name | www.globalsign.com (Domain or Entity name) |
Openssl Generate Rsa Private Key Calculator
You should now have a Private Key (privatekey.key) which should stay on your computer, and a Certificate Signing Request (CSR.csr), which can be submitted to GlobalSign to sign your public key. Each of these files can be viewed in a plain text editor such as Notepad, TextEdit, Vi, Nano, and Notepad++.