This article will demonstrate how to use OpenSSL to create a self signed certificate. First things first. What is a self signed certificate? A self signed certificate is exactly what it sounds like. The private key of the key pair signs its own SSL certificate. It is not signed by a CA … [Read more...] about OpenSSL Self Signed Certificate
curl authentication – Certificate, Bearer token, and Basic Auth
The following examples will go through how to use curl with authentication. For obvious reasons, public APIs do not require authentication but private APIs will require authentication using authorization headers with basic auth, a bearer token header using a JWT (Javascript Web Token) or some other … [Read more...] about curl authentication – Certificate, Bearer token, and Basic Auth
openssl view certificate
To view and parse a certificate with openssl, run the following command with the openssl x509 utility: openssl x509 -in example.com.crt -text -noout Where x509 is a certificate utility, -in example.com.crt is the certificate to view, -text means to print the full details of the certificate in … [Read more...] about openssl view certificate
Convert PEM to other formats
Before covering how to convert to pem from different certificate formats let us define what each of the certificate file extensions means. .pem - Privacy Enhanced Mail Certificate. A PEM file is Base64 encoded and may be an X.509 certificate file, a private key file, or any other key material. … [Read more...] about Convert PEM to other formats
pkcs12
A pkcs12 keystore is commonly used for both S/MIME User Certificates and SSL/TLS Server Certificates. The keystore may contain both private keys and their corresponding certificates with or without a complete chain. The keystore’s purpose is to store the credential of an identity, being a person, … [Read more...] about pkcs12
How to Install OpenSSL on Ubuntu
This article will demonstrate how to install OpenSSL on the Ubuntu Linux platform. Most if not all installations of Ubuntu include OpenSSL by default. If you find yourself with an instance of Ubuntu that does not already have OpenSSL installed, then this article is for you. The examples in this … [Read more...] about How to Install OpenSSL on Ubuntu
How to Install OpenSSL on Windows
This article will demonstrate how to install OpenSSL on the Windows platform. Not all installations of Windows come with an installed version of OpenSSL. You may wish to install OpenSSL to run any number of their cryptographic commands. For a list of available commands visit any of our articles … [Read more...] about How to Install OpenSSL on Windows
openssl s_client commands and examples
The s_client command from OpenSSL is a helpful test client for troubleshooting remote SSL or TLS connections. The post strives to walk you through various examples of testing SSL connections with different ciphers, TLS versions, and SSL server certificate analysis. Testing SSL configuration on … [Read more...] about openssl s_client commands and examples