4 Effective Ways to Keep warm in winter
Here is your guide to keeping warm this winter. We have a selection of tips to help you stop shivering in the cold winter months. From keeping the draughts out and keeping the heat in, to keeping an eye on…
Category DevOps
What is SSL Wildcard Certificate?
A wildcard certificate is a specific form of the certificate used in TLS/SSL instances. It is a single certificate with a wildcard character (*) in the domain name field. This allows the certificate to secure multiple subdomain names (hosts) pertaining…
2 Ways to Get Public Key from Private Key
SSH public key authentication relies on asymmetric cryptographic algorithms that generate a pair of separate keys (a key pair), one “private” and the other “public”. We keep the private key a secret and store it on the computer you use…
Create RSA DSA Public Private Key with Openssl
In this post, we will cover how to create RSA private key, RSA public key, DSA private key, DSA public key with OpenSSL. Create RSA Private Key with PEM format RSA private key generation with OpenSSL involves just one step:…
Risk of Wildcard Certificate in SSL with Examples
A wildcard certificate is a specific form of the certificate used in TLS/SSL instances. It is a single certificate with a wildcard character (*) in the domain name field. This allows the certificate to secure multiple subdomain names (hosts) pertaining…
How to fix ssh_dispatch_run_fatal?
On a Linux 8 system with FIPS enabled, connecting to a Linux 6 system fails, ssh -v displays the following message ssh_dispatch_run_fatal: Connection to XXX port 22: invalid argument Solution The simplest solution is to delete file /etc/ssh/moduli on the…
Understanding PFX File with Examples
PFX files are digital certificates that contain both the SSL certificate (public keys) and private key. They’re essential for establishing secure connections between two devices. PFX files are usually issued by a certificate authority and contain information about the issuing…
Fix routines:X509_check_private_key:key values mismatch in 2 Ways
For SSL key values mismatch issue, it means the private key file does not match the certificate. There are two main reasons. Error message:Cannot load SSL private key file. Error: error: 0B080074:x509 certificate routines:X509_check_private_key:key values mismatch. What is SSL certificate…
Check Wildcard Certificate in SSL with Examples
A wildcard certificate is a specific form of the certificate used in TLS/SSL instances. It is a single certificate with a wildcard character (*) in the domain name field. This allows the certificate to secure multiple subdomain names (hosts) pertaining…
Understanding SSL Certificate PEM File and SSH PEM File with Examples
PEM (originally “Privacy Enhanced Mail”) file was initially invented to make e-mail secure. Now it is an Internet security standard. PEM file is the most common format for X.509 certificates, CSRs, and cryptographic keys. What is a PEM file A…