Ssl Pem Key


Ssl Pem Key Format

Ssl Pem Key
On Mon, Dec 16, 2013 at 04:03:30PM +0100, lists wrote:
> >I have a .pem file. Is there a way to get it converted into .crt
> >and .key files using openssl tool.
> '.pem' doesn't say much.
> If it is a file containing both the key and the certificate and it
> is in PEM format (as the name suggests), it is a sort of text.
> You can simply edit it and split it in two files, one containing the part
Using a text editor is not the best approach. To extract the key
in PKCS8 form:
$ (umask 077; openssl pkey -in mumble.pem -out mumble-key.pem)
If the OpenSSL version is older than 1.0.0, to extract the key as an
RSA key.
$ (umask 077; openssl rsa -in mumble.pem -out mumble-key.pem)
To password-protect the key add a '-aes128' option or similar. To
encode it in DER format rather than PEM, add a '-outform DER' option,
for example:
$ (
umask 077
openssl pkey -in mumble.pem -aes128 -outform DER -out mumble-key.der
To extract the certificate chain:
$ openssl crl2pkcs7 -nocrl -certfile mumble.pem
openssl pkcs7 -print_certs -out mumble-chain.pem
To extract the chain in PKCS7 DER form:
$ openssl crl2pkcs7 -nocrl -certfile mumble.pem
openssl pkcs7 -outform DER -out mumble-chain.spc
To extract just the leaf server certificate in DER form:
$ openssl x509 -in mumble.pem -outform DER -out mumble-cert.crt
One can also create a password-protected DER PKCS12 file with the key
and certificate in one:
$ (
umask 077
openssl pkcs12 -export -in mumble.pem
-passout 'pass:umask 077' -out mumble.p12
The above example relies on file access protection with a deliberately
weak password useful for non-interactive operation.
So there are sadly a lot of possibilities, depending on what's actually
available and required.
OpenSSL Project
User Support Mailing List [hidden email]
Automated List Manager [hidden email]

PEM, which stands for privacy-enhanced mail, is the most popular container format used by certificate authorities (CAs) to issue SSL certificates. For example, Apache and other similar servers require SSL certificates to be in this format. Navigate to Traffic Management SSL and, in the Tools group, select Import PKCS#12. Specify the PEM certificate name in the Output File Name field. Browse to the location of the PFX certificate on your local computer or the appliance. We’ll send you notification 30 days before SSL expiration date. It generates certificate signing request (CSR) and private key. Enter PEM or: browse: to upload.

  • PEM is the most popular SSL certificate format issued by certification authority centers with different file extensions such as.pem,.crt,.cer or.key.
  • PEM files are used to store SSL certificates and their associated private keys. Multiple certificates are in the full SSL chain, and they work in this order: The end-user certificate, which is assigned to your domain name by a certificate authority (CA). This is the file you use in nginx and Apache to encrypt HTTPS.

Nginx Ssl Pem Key

Convert openssl .key file to .pem
For converting .key file to .pem file,
Your keys may already be in PEM format, but just named with .crt or .key.
If they begin with -----BEGIN and you can read them in a text editor (they use base64, which is readable in ASCII, not binary format), they are in PEM format.
If the file is in binary, for the server.crt, you would use
openssl x509 -inform DER -outform PEM -in server.crt -out server.crt.pem
For server.key, use openssl rsa in place of openssl x509.
The server.key is likely your private key, and the .crt file is the returned, signed, x509 certificate.
If this is for a Web server, and you cannot specify loading a separate private and public key, you may need to concatenate the two files. For this use: cat server.crt server.key > server.includesprivatekey.pem. I would recommend naming files with 'includesprivatekey' to help you manage the permissions you keep with this file.

Ssl Pem Vs Key


Ssl Key File

commented Jan 10, 2021

This is maybe true
If the file begins with -----BEGIN RSA PRIVATE KEY----- then you are good
But if your file starts with -----BEGIN PRIVATE KEY-----

True PEM Format
Then you need to run the following openssl command
openssl rsa -in C:CertificateslocalPrivateKeyfile.key -text > privateKeyFileInPemFormat.pem


Ssl Pem Key

commented Mar 4, 2021


openssl x509 -in certificate.crt -out certificate.pem -outform PEM
openssl rsa -in private.key -text > privatekey.pem

Ssl Key And Certificate

Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment