Openssl req -noout -modulus -in CSR.csr | openssl md5 Openssl rsa -noout -modulus -in privateKey.key | openssl md5

Check an MD5 hash of the public key to ensure that it matches with what is in a CSR or private key openssl x509 -noout -modulus -in certificate.crt | openssl md5.

If you are trying to verify that an SSL certificate is installed correctly, be sure to check out the SSL Checker. If you are receiving an error that the private doesn't match the certificate or that a certificate that you installed to a site is not trusted, try one of these commands. p12) openssl pkcs12 -info -in keyStore.p12

Check a certificate openssl x509 -in certificate.crt -text -noout.

Check a private key openssl rsa -in privateKey.key -check.

Check a Certificate Signing Request (CSR) openssl req -text -noout -verify -in CSR.csr.

You can also check CSRs and check certificates using our online tools. If you need to check the information within a Certificate, CSR or Private Key, use these commands.

Remove a passphrase from a private key openssl rsa -in privateKey.pem -out newPrivateKey.pem.

Generate a certificate signing request based on an existing certificate openssl x509 -x509toreq -in certificate.crt -out CSR.csr -signkey privateKey.key.

Generate a certificate signing request (CSR) for an existing private key openssl req -out CSR.csr -key privateKey.key -new.

Generate a self-signed certificate (see How to Create and Install an Apache Self Signed Certificate for more info) openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -keyout privateKey.key -out certificate.crt.Generate a new private key and Certificate Signing Request openssl req -out CSR.csr -new -newkey rsa:2048 -nodes -keyout privateKey.key.These commands allow you to generate CSRs, Certificates, Private Keys and do other miscellaneous tasks.

Below, we have listed the most common OpenSSL commands and their usage: General OpenSSL Commands If you don't want to bother with OpenSSL, you can do many of the same things with our SSL Certificate Tools. A compiled version of OpenSSL for Windows can be found here. However, it also has hundreds of different functions that allow you to view the details of a CSR or certificate, compare an MD5 hash of the certificate and private key (to make sure they match), verify that a certificate is installed properly on any website, and convert the certificate to a different format. OpenSSL is commonly used to create the CSR and private key for many different platforms, including Apache.

There are versions of OpenSSL for nearly every platform, including Windows, Linux, and Mac OS X. One of the most versatile SSL tools is OpenSSL which is an open source implementation of the SSL protocol.

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