OpenSSL - OpenSSL "x509 -fingerprint" - Print Certificate Fingerprint

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, 14210👍, 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, 14211👍, 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&gt... 2012-07-24, 12568👍, 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... 2012-07-23, 11857👍, 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, 11502👍, 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.