FYIcenter HTTPS Server Certificate Checker
How to verify an HTTPS server certificate? To help you to verify an HTTPS server certificate and view its detailed information, including the server certificate, FYIcenter.com has designed this online tool. All you need to do is to paste the HTTPS server URL into the input box and click the "Go" but... 2021-02-07, 20663👍, 3💬
Simple Working Configuration File for OpenSSL "ca"
Where to find a simple configuration file example for the OpenSSL "ca" command? Here is a simple configuration file example for the OpenSSL "ca" command: # Unnamed section of generic options # ------------------------------ ------------------------------ ------# Section for the "default_ca" option # ... 2016-09-04, 1050👍, 0💬
OpenSSL "verify -untrusted" - Specify Untrusted Certificate
How to specify those intermediate CA certificates that form the signing chain for the server certificate for OpenSSl "verify" command? I have the certificate chain from the server saved in a file. If you have the server certificate chain saved in a file, you can provide it to the OpenSSL "verify" co... 2012-07-24, 10302👍, 0💬
OpenSSL "verify -CAfile" - Specify Root CA Certificate
How to specify the root CA certificates that close the signing chain for the server certificate for OpenSSl "verify" command? I have downloaded the root CA certificate in a file. If you have the root CA certificate downloaded in a file, you can provide it to the OpenSSL "verify" command using the "-... 2012-07-24, 8429👍, 0💬
OpenSSL "verify" - Verify or Validate Certificate
How to verify or validate a certificate using OpenSSL "verify" command? I got a certificate from the Web site server and want to see if it is valid. If you have a certificate stored in a file, you can try to validate it or verify it with the OpenSSL "verify" command as shown below: C:\Users\fyicente... 2012-07-24, 8158👍, 0💬
Download Root CA Certificate
How to download the certificate from a root CA? I need to the root CA certificate to close the certification validation chain. If you know the CN (Common Name) of the root CA, for example "DigiCert High Assurance EV Root CA", you can search and download it our certificate database at certificate.fyi... 2012-07-24, 8122👍, 0💬
OpenSSL Verify Operation Steps
How does the OpenSSL verify operation work? What are the steps used by OpenSSL to verify a certificate? The OpenSSL verify operation uses the same functions as the internal SSL and S/MIME verification, therefore this description applies to these verify operations too. There is one crucial difference... 2012-07-24, 4519👍, 0💬
Save OpenSSL Command Output to File
How to save the output of an OpenSSL command into a file? I want to make a copy of the server certificate display in the "s_client -connect" command output. If want to save the output an OpenSSL command into a file, you need to run the entire OpenSSL command at the Windows command prompt with the Wi... 2012-07-24, 21133👍, 0💬
OpenSSL "s_client -connect" - Connect to HTTPS Web Site
How to connect to a HTTPS Web site using OpenSSL? I see the Web sites using the "https:\" format. If you see a Web sites using the "https:\" format, for example https://twitter.com/login/, you can try to connect the Web site using the "x509 -connect" command as shown below: C:\Users\fyicenter>... 2012-07-24, 13756👍, 0💬
OpenSSL "s_client -connect" - Show Server Certificate Chain
How to show all certificates in the server certificate chain using the OpenSSL "s_client -connect" command? I know the server uses multiple intermediate CA certificates. You can get all certificates in the server certificate chain if use "s_client -connect" with the "-showcerts" option as shown belo... 2012-07-24, 12137👍, 0💬
OpenSSL "s_client -connect" - View Server Certificate
How to view the server certificate using the OpenSSL "s_client -connect" command? You can get the server certificate, if use "s_client -connect" without the "-quiet" option as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> s_client -connect www.twitter.com:443 CONN... 2012-07-24, 8093👍, 0💬
OpenSSL "verify" Command Options
What can I use OpenSSL "verify" command for? What are options supported by the "verify" command? OpenSSL "verify" command is a utility to verify certificates. Here are options supported by the "verify" command: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> verify -h usage: ver... 2012-07-24, 5827👍, 0💬
OpenSSL "x509 -text" - Print Certificate Info
How to print out text information from a certificate using OpenSSL "x509" command? I want to see the subject and issuer of the certificate. Assuming you have a certificate file located at: C:\Users\fyicenter\twitter.crt ,you can print out certificate information in text format using the "x509 -text"... 2012-07-23, 16020👍, 0💬
OpenSSL "x509 -fingerprint" - Print Certificate Fingerprint
How to print out MD5 and SHA-1 fingerprints of a certificate using OpenSSL "x509" command? I need to see them and validate them with the owner of the certificate. Assuming you have a certificate file located at: C:\Users\fyicenter\twitter.crt ,you can print out certificate fingerprints using the "x5... 2012-07-23, 15997👍, 0💬
OpenSSL "s_client" Command Options
What can I use OpenSSL "s_client" command for? What are options supported by the "s_client" command? OpenSSL "s_client" command implements a generic SSL/TLS client which can establish a transparent connection to a remote server speaking SSL/TLS. It's intended for testing purposes only and provides o... 2012-07-23, 13452👍, 0💬
Start OpenSSL from Working Directory
How to start OpenSSL from my working directory where I have certificates stored. You can start OpenSSL from a command line window as shown in the tutorial: 1. Open a command line window. 2. Use the "cd" command to go to your working directory. 3. Run the OpenSSL program with the full path name as sh... 2012-07-23, 11049👍, 0💬
Sample X.509 Certificate File to Test OpenSSL
How can I get a X.509 certificate file to play with OpenSSL commands "x509" command? If you have no other easy way to get a sample X.509 certificate file, you can create one yourself using these steps: 1. Open "Notepad" with a black text file. 2. Copy and paste the following data into the "Notepad" ... 2012-07-23, 10641👍, 0💬
Install OpenSSL 0.9.8h on Windows
How to install OpenSSL on Windows? I have downloaded the "openssl-0.9.8h-1-setup.exe" on the desktop. If you have "openssl-0.9.8h-1-setup.exe" available, you can install OpenSSL 0.9.8h on Windows using these steps: 1. Double-click on "openssl-0.9.8h-1-setup.exe" to start the installation wizard. 2. ... 2012-07-23, 10319👍, 0💬
OpenSSL Command to List All Commands
How to list all commands in OpenSSL? I don't remember exactly what is the command to generate a CSR. Interestingly, there is no OpenSSL command to list all commands supported in OpenSSL. And there is no "help" command. However, if you enter "help" as a command, OpenSSL will return you an error messa... 2012-07-23, 8281👍, 0💬
List of Commands Supported in OpenSSL
What commands are supported in OpenSSL? Here is a complete list of commands supported in OpenSSL: STANDARD COMMANDS asn1parse - Parse an ASN.1 sequence. ca - Certificate Authority (CA) Management. ciphers - Cipher Suite Description Determination. cms - CMS (Cryptographic Message Syntax) utility crl ... 2012-07-23, 7066👍, 0💬
OpenSSL Command Option to List All Options
How to list all options that are supported by a specific OpenSSL command? I know the command but I don't remember the options for that command. Interestingly, there is no "-h" option to show all options supported by a specific OpenSSL command. However, if you enter "-h" as an option following a comm... 2012-07-23, 5915👍, 0💬
What Is OpenSSL
What is OpenSSL? OpenSSL is a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library. OpenSSL is maintained by a worldwide commu... 2012-07-22, 6937👍, 0💬
How to how extra an ASN.1 child structure using the OpenSSL "ans1parse" command? You can use the Ope...
Where to find tutorials on managing certificate on Windows system? I want to learn how manages secur...
Certificate Summary: Subject: www.elegantthemes.com Issuer: GeoTrust Extended Validation SSL CA Expi...
How to create a self-signed root certificate using "makecert.exe"? I want to issue and sign certific...
What is "certmgr.exe" on Windows 7? What can I use it for? "certmgr.exe" is a Certificate Manager co...