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You are here: Home » How To Convert SSL .crt Certificate to .pem?

By Abhishek Ghosh August 2, 2014 6:20 pm Updated on August 2, 2014

How To Convert SSL .crt Certificate to .pem?

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Sometimes, some SSL authorities deliver certificate in .crt format but we need in .pem format – like in case of Rackspace Load Balancers. Right now, the reason to get mad with SSL Certificate is upcoming HTTP 2.0 protocol. Performing a search about SSL performing a on this website can help you to learn what possibly you need to know. For server only; reading guides like how to Install Comodo SSL Certificate on Rackspace Cloud Server will work fine. But for loadbalancers on Rackspace, we only need to copy paste the certificates. One is the Private Key and the other is the stuff what you have paid for – SSL certificate in .pem format.

How To Convert SSL .crt Certificate to .pem

 

What You Need To Know Before How To Convert SSL .crt Certificate to .pem

 

PEM is the abbreviation of Privacy-enhanced Electronic Mail. PEM is an IETF proposed for Privacy Protection. Sometimes, to save money, the Certificate Authorities even do not add the certificate as attachment but only sends the certificate in this way at the end of the email :

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-----BEGIN CERTIFICATE-----
letters and digits
-----END CERTIFICATE-----

It is difficult to say whether that is a .pem file or not. Obviously, renaming .crt file to .pem or vice versa will not work. There are online tools to check, mostly these are .crt. Also if nothing written, you copy paste the whole code as plain text and can save them as various extensions and test in this way :

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openssl x509 -in your-domain.pem -text -noout
openssl x509 -in your-domain.cer -text -noout
openssl x509 -in your-domain.crt -text -noout

Proper format will give you the right info without any error.

 

How To Convert SSL .crt Certificate to .pem

 

You can convert on your Mac, GNU Linux computer or on Server after doing SSH. Just make sure that; the folder contains all the files you used to generate the CSR file – the private key, the .crt file and if more things are there, although we will not need all. cd to that directory. This old set of command, possibly does not work anymore :

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openssl x509 -in hostname.crt -inform DER -out hostname.crt.pem -outform PEM
openssl rya -in hostname.key -out hostname.key.pem -outform PEM

But, this set will work :

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openssl pkcs12 -export -in hostname.crt -inkey hsotname.key -out hostname.p12
openssl pkcs12 -in hostname.p12 -nodes -out hostname.pem

Actually we were working for a conversation, the above one is from a gist, who discovered it is unknown (I copied in textedit and closed the windows). Documentation about pkcs will be available here :

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https://www.openssl.org/docs/apps/pkcs12.html

Tagged With convert crt to pem , convert crt to pem windows , crt to pem , how to convert crt to pem , convert pem to crt , windows crt to pem , windows convert crt to pem , convert a crt to pem , convert crt certificate to pem , convert pem to CRT and PEM windows

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Abhishek Ghosh

About Abhishek Ghosh

Abhishek Ghosh is a Businessman, Surgeon, Author and Blogger. You can keep touch with him on Twitter - @AbhishekCTRL.

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About This Article

Cite this article as: Abhishek Ghosh, "How To Convert SSL .crt Certificate to .pem?," in The Customize Windows, August 2, 2014, February 6, 2023, https://thecustomizewindows.com/2014/08/how-to-convert-ssl-crt-certificate-to-pem/.

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