Articles about openssl | UserComp.com

Creating a Certificate Authority for Internal Network

This article guides you through the process of creating a Certificate Authority (CA) to issue certificates for your internal network. We'll be using OpenSSL on a Linux server for this demonstration.

How to Fix OpenSSL Version Mismatch when Compiling OpenSSH-9.9p2 on CentOS 6.2

Learn how to resolve the OpenSSL version mismatch issue when compiling OpenSSH-9.9p2 on CentOS 6.2. Follow this step-by-step guide for a successful compilation.

Generating OpenVPN TLS-Crypt Key with OpenSSL

This article explains how to generate a TLS-Crypt key for OpenVPN using OpenSSL. We will cover the required JSON structure and the steps to generate the key.

Troubleshooting Invalid openssl.cfg File in Windows

Having trouble loading an invalid openssl.cfg file in Windows? Learn how to troubleshoot and fix this issue with our step-by-step guide. Get your OpenSSL configuration working smoothly again.

FFmpeg MacOS Binary Not Supporting RTMPS: Build Custom MacOS Binary Statically Linked with OpenSSL for RTMPS

Having trouble with the MacOS binary of FFmpeg not supporting RTMPS? Learn how to build a custom MacOS binary of FFmpeg statically linked with OpenSSL to enable RTMPS support. Follow our step-by-step instructions for an easy solution.

How to Avoid Requesting Instructions with OpenSSL Config File in Tech Support

Learn how to generate a certificate request using OpenSSL without specifying instructions in the command line. This article will provide a step-by-step guide on how to use a configuration file to avoid requesting instructions.

Configuring OpenSSL: Copying email SubjectAltName from openssl.cnf

In this tech support article, we will guide you through the process of configuring OpenSSL to copy the email SubjectAltName from the openssl.cnf file during the creation of a Certificate Signing Request (CSR). This is a common requirement for organizations that need to ensure the accuracy of their email addresses in their SSL certificates.

Upgrading TLS on an Old Server without Reinstalling Core OS: A Guide

In this tech support guide, we will provide step-by-step instructions on how to upgrade TLS on an old server without requiring a reinstallation of the core operating system. This is particularly useful for those running an older Linux version, such as 2.6.32-431.29.2.el6.x86_64#1 SMP OpenSSL, which supports TLS 1.2 but not TLS 1.3.

How to Read 16384 Bytes of Data using OpenSSL: A Tech Support Guide

In this article, we'll explore how to read 16384 bytes of data using the OpenSSL library, providing a solution for those struggling to implement a Simple TLSServer example. If you're facing issues figuring out how to work with OpenSSL, this guide is for you.

OpenSSL Connection Error in Java: A Comprehensive Guide for Tech Support

In this article, we will discuss the OpenSSL connection error that occurred in a Java application while connecting to server1 and server2, which were clones of server2 and upgraded from Debian 9.7 to Debian 11. We will explore potential causes and provide solutions to resolve the issue, making the content SEO-optimized with relevant keywords. Read more to learn about this tech support problem.

Fixing SSL Handshake Error: Not Connecting to Server Providing Certificates Signed Using SHA1RSA (Linux, OpenSSL 3)

Having trouble connecting to a server due to a certificate signed using SHA1RSA? Learn how to resolve the SSL handshake error on Linux using OpenSSL 3. Follow our step-by-step guide to ensure a secure connection.

Easily Creating a Req File with Easy-RSA for SSL Certificate

Learn how to create a req file using Easy-RSA for building an SSL certificate, even if you're not directly familiar with OpenSSL.

Configuring OpenSSL for SSL Certificate Creation (Windows Novice)

Learn how to configure OpenSSL for creating SSL certificates on a Windows system. This article is for beginners who may not be familiar with the process.

OpenSSL Refusing SHA-3-256 MD: Troubleshooting Nginx Certificate Signing

When creating a local root CA using OpenSSL with Nginx, the system might indicate the use of SHA-3-256 for signing the certificate, but OpenSSL refuses to comply. This article discusses possible causes and solutions for this issue.

Maintaining CentOS 7 Past EOL: Using Vault Repos for Yum Config, Troubleshooting OpenSSL and OpenJDK Package Installations

Learn how to maintain a CentOS 7 hosted service past its End of Life (EOL) by using Vault repositories to update your system configuration. This guide covers troubleshooting OpenSSL and OpenJDK package installations.

Encrypting Excel Cell Values using OpenSSL: Single Column

Learn how to encrypt values in a single column of an Excel file using OpenSSL. This article provides a step-by-step guide for Windows users.

Creating P12 OpenSSL RC2-40-CBC Certificate with OpenSSL 3.2.1 on Fedora 40

Learn how to create a P12 certificate with RC2-40-CBC encryption using OpenSSL 3.2.1 on Fedora 40.

Installing OpenSSL with Winget: A Step-by-Step Guide

Learn how to install OpenSSL using Winget following the instructions for <https://winget.run/pkg/ShiningLight/OpenSSL>. This guide covers the process in detail, including any necessary prerequisites.

OSSL Cipher Unpad Block: Bad Decrypt Error in Red Hat Script

This article explains the cause and solution of the OSSL_CIPHER_UNPAD_BAD_DECrypt error encountered while decrypting a file using an OpenSSL script in a Red Hat environment.

Converting Encrypted RSA Private Key to Unencrypted Format using OpenSSL 3.3.0 on Mac

Learn how to convert an encrypted RSA private key to an unencrypted format using OpenSSL 3.3.0 on a Mac.

Resolving 'libssl.so.3: not openshared object file: No such file or directory' while compiling OpenSSL

This article provides a solution for the error 'libssl.so.3: not openshared object file: No such file or directory' encountered during OpenSSL compilation. The issue is commonly caused by missing or outdated OpenSSL libraries.

Postfix with OpenSSL 3: Auto DH Parameters

This article explains how to configure Postfix to use OpenSSL 3's auto DH parameters.

Postfix 3.7 and OpenSSL 3: Configuring DH Parameters

This article explains how to configure DH parameters in Postfix 3.7 when using OpenSSL 3.0.0 or later.

Debug Folder No Permission in Kali Linux for OpenSSL Programs

This article explains how to grant necessary permissions to the debug folder in Kali Linux for OpenSSL programs that fail to run due to insufficient permissions.

Installing OpenSSL 1.1.1 on Debian Bullseye instead of the default OpenSSL 3.0

Debian Bullseye comes with OpenSSL 3.0 by default. However, some applications may require OpenSSL 1.1.1. To install OpenSSL 1.1.1, follow these steps.

Decrypting File with OpenSSL: Issue with hex string and padding bytes length (fc382Crypto.bin)

This article provides a solution to an issue encountered while decrypting a file using OpenSSL with a hex string and padding bytes length. The file in question is named fc382Crypto.bin. Follow the steps below to decrypt the file successfully.

Exporting CRT File Certificates using OpenSSL in Windows DOS Prompt

Learn how to extract and export a CRT file certificate using the OpenSSL utility in the Windows DOS prompt.

OpenSSL ECDSA Signature Issue: Different Results Using Two Different Methods

The user encountered different results when signing a binary file using OpenSSL's ECDSA algorithm through two different methods in a Windows environment. This article aims to help the user understand the possible causes and provide solutions.

OpenSSL-AES-256-CBC: No Longer Decrypts Secrets Early 2022

Users report encryption files saved with OpenSSL AES-256-CBC algorithm are no longer decrypting correctly since early 2022. This issue may affect various platforms including Linux.

TLSv1.0 Unsupported by OpenSSL Client, but Nmap Shows Supported?

While identifying the TLS protocols supported by a web application using OpenSSL client, an unexpected result was observed when comparing it with Nmap's SSL enumeration. This article aims to clarify the discrepancy between the two tools.

SSH and OpenSSL: Decrypting RSA Private Keys with ssh-add and openssl pkeyutl

In this tech support article, we will explain how to use OpenSSL's pkeyutl command to decrypt an RSA private key that has been encrypted using the ssh-add command. We will also create handy aliases for encrypting and decrypting the key.

Enable One-Way TLS with EJBCA and OpenSSL CMP using Command Line

Learn how to enable a one-way TLS connection with EJBCA and OpenSSL CMP command line application. Authenticate the TLS server certificate presented by EJBCA and create a truststore for CMP communication.

PHP OpenSSL Encode/Decode Multiple String - Tech Support

Learn how to use PHP OpenSSL to encode and decode multiple strings. This article provides step-by-step instructions and code examples to help you securely encrypt and decrypt data using OpenSSL in PHP.

How to Show Output in OpenSSL When Decrypting with a Wrong Password

Learn how to display output in OpenSSL even when decrypting with an incorrect password. Discover a simple solution to overcome the 'bad decrypt' error message and access the decrypted content.

Get Certificate Expiry Date in Unix Time Format

Learn how to retrieve the expiry date of a certificate in Unix time or any other numeric format. This article provides step-by-step instructions using OpenSSL to obtain the certificate's expiration date.

P12 Certificate Authentication - The Correct Method for VPN, OpenSSL, IPsec, PKI, and Client Certificate

Learn the correct method for P12 certificate authentication in VPN, OpenSSL, IPsec, PKI, and client certificate setups. This article provides step-by-step instructions and best practices for ensuring a secure and successful authentication process.

How to Set Length of Certificate Serial Number Explicitly?

Learn how to set the length of a certificate serial number explicitly using OpenSSL. This article provides step-by-step instructions and explanations for configuring the serial number length in certificates.

How to Set Up Client Certificate for EAP-TLS in Windows

Learn how to set up a client certificate for EAP-TLS in Windows to enhance wireless network security. This article provides step-by-step instructions using OpenSSL and covers the necessary configurations.

Exporting non-exportable private key for .cer from Windows Certificate Manager

Learn how to export a non-exportable private key for .cer files from Windows Certificate Manager using PowerShell and OpenSSL. This article provides step-by-step instructions and tips for successfully exporting the private key. Explore the world of cryptography and enhance your understanding of certificate management.

How to Get the Certificate of an Email Server with Offlineimap

Learn how to obtain the certificate of an email server using Offlineimap and OpenSSL. This article provides step-by-step instructions for retrieving the certificate, ensuring secure communication with the server.

How to Update OpenSSL to 3.1.1 from 1.0.2n in Node.js

Learn how to update OpenSSL to version 3.1.1 from 1.0.2n in Node.js. This article provides step-by-step instructions to ensure your SSL certificates are up to date and secure.