OpenSSL "x509 -fingerprint" - Print Certificate Fingerprint

Q

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.

✍: FYIcenter.com

A

Assuming you have a certificate file located at: C:\Users\fyicenter\twitter.crt, you can print out certificate fingerprints using the "x509 -fingerprint" command as shown below:

C:\Users\fyicenter>\local\openssl\openssl.exe

OpenSSL> x509 -in twitter.crt -noout -fingerprint -md5
MD5 Fingerprint=89:5B:A2:BF:DC:E4:73:DA:46:84:D5:45:6D:81:97:52

OpenSSL> x509 -in twitter.crt -noout -fingerprint -sha1
SHA1 Fingerprint=A3:3B:B5:4C:BC:57:51:3F:94:A3:C2:88:A6:4A:02:C5:F6:8D:40:57

Options used in these commands are:

"-fingerprint" - Print out a fingerprint (digest) of the certificate.
"-md5" - Use the MD5 digest algorithm to generate the fingerprint
"-sha1" - Use the SHA-1 digest algorithm to generate the fingerprint

⇒ OpenSSL "x509 -x509toreq" - Conver Certificate to CSR

⇐ OpenSSL "x509 -text" - Print Certificate Info

⇑ OpenSSL "x509" Command

⇑⇑ OpenSSL Tutorials

2012-07-23, ≈25🔥, 0💬

💬 2021-11-19 ts.gil.com.pk: openssl req -new -newkey rsa:2048 -nodes -sha256 -out ts_gil_com_pk.csr -keyout ts_gil_com_pk.key -subj "/CN=ts.gil.com.pk/C=US"

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, ≈31🔥, 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, ≈28🔥, 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, ≈25🔥, 0💬

OpenSSL "x509" Command Options
What can I use OpenSSL "x509" command for? What are options supported by the "x509" command? OpenSSL "x509" command is a multi purpose certificate utility. It can be used to display certificate information, convert certificates to various forms, sign certificate requests like a "mini CA" or edit cer... 2021-01-16, ≈24🔥, 1💬

💬 2021-01-16 Rodrigo Barahona: Comentaros

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&gt... 2012-07-24, ≈22🔥, 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, ≈22🔥, 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, ≈19🔥, 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, ≈17🔥, 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, ≈11🔥, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.