- Openssl Generate Pem Key
- How To Generate Pem
- Linux Generate Private Key Pem File
- Linux Generate Private Key Pem File
- Linux Generate Private Key Pem Key
Several tools exist to generate SSH public/private key pairs. The following sections show how to generate an SSH key pair on UNIX, UNIX-like and Windows platforms.
How to generate a public/private key (UNIX) Ask Question Asked 9 years. # private key openssl genrsa -out privkey.pem 2048 # public key openssl rsa -in privkey.pem -pubout -out pubkey.pem. Anyway to generate keys you should use ssh-keygen. You need private and public keys to use SSL, an encryption system based on asymmetric keys. Traditionally, private keys on Linux-based operating systems (Ubuntu, Debian, CentOS, RedHat, etc.) are openssl generated keys with the crypto toolkit and saved into files with the.key or.pem extension. However, since specific extensions are not obligatory for simple text files on Linux systems, the private key code can be put into a file.
Generating an SSH Key Pair on UNIX and UNIX-Like Platforms Using the ssh-keygen Utility
UNIX and UNIX-like platforms (including Solaris and Linux) include the ssh-keygen utility to generate SSH key pairs.
To generate an SSH key pair on UNIX and UNIX-like platforms using the ssh-keygen utility:
- Navigate to your home directory:
- Run the ssh-keygen utility, providing as
filename
your choice of file name for the private key:The ssh-keygen utility prompts you for a passphrase for the private key. - Enter a passphrase for the private key, or press Enter to create a private key without a passphrase:Note:While a passphrase is not required, you should specify one as a security measure to protect the private key from unauthorized use. When you specify a passphrase, a user must enter the passphrase every time the private key is used.The ssh-keygen utility prompts you to enter the passphrase again.
- Enter the passphrase again, or press Enter again to continue creating a private key without a passphrase:
- The ssh-keygen utility displays a message indicating that the private key has been saved as
filename
and the public key has been saved asfilename
.pub
. It also displays information about the key fingerprint and randomart image.
Generating an SSH Key Pair on Windows Using the PuTTYgen Program
The PuTTYgen program is part of PuTTY, an open source networking client for the Windows platform.
To generate an SSH key pair on Windows using the PuTTYgen program:
- Download and install PuTTY or PuTTYgen.To download PuTTY or PuTTYgen, go to http://www.putty.org/ and click the You can download PuTTY here link.
- Run the PuTTYgen program.
- Set the Type of key to generate option to SSH-2 RSA.
- In the Number of bits in a generated key box, enter 2048.
- Click Generate to generate a public/private key pair.As the key is being generated, move the mouse around the blank area as directed.
- (Optional) Enter a passphrase for the private key in the Key passphrase box and reenter it in the Confirm passphrase box.Note:While a passphrase is not required, you should specify one as a security measure to protect the private key from unauthorized use. When you specify a passphrase, a user must enter the passphrase every time the private key is used.
- Click Save private key to save the private key to a file. To adhere to file-naming conventions, you should give the private key file an extension of
.ppk
(PuTTY private key).Note:The.ppk
file extension indicates that the private key is in PuTTY's proprietary format. You must use a key of this format when using PuTTY as your SSH client. It cannot be used with other SSH client tools. Refer to the PuTTY documentation to convert a private key in this format to a different format. - Select all of the characters in the Public key for pasting into OpenSSH authorized_keys file box.Make sure you select all the characters, not just the ones you can see in the narrow window. If a scroll bar is next to the characters, you aren't seeing all the characters.
- Right-click somewhere in the selected text and select Copy from the menu.
- Open a text editor and paste the characters, just as you copied them. Start at the first character in the text editor, and do not insert any line breaks.
- Save the text file in the same folder where you saved the private key, using the
.pub
extension to indicate that the file contains a public key. - If you or others are going to use an SSH client that requires the OpenSSH format for private keys (such as the
ssh
utility on Linux), export the private key:- On the Conversions menu, choose Export OpenSSH key.
- Save the private key in OpenSSH format in the same folder where you saved the private key in
.ppk
format, using an extension such as.openssh
to indicate the file's content.
.pem SSL Creation Instructions
Openssl Generate Pem Key
SSL .pem files (concatenated certificate container files), are frequently required for certificate installations when multiple certificates are being imported as one file.
This article contains multiple sets of instructions that walk through various .pem file creation scenarios.
Creating a .pem with the Entire SSL Certificate Trust Chain
How To Generate Pem
- Log into your DigiCert Management Console and download your Intermediate (DigiCertCA.crt), Root (TrustedRoot.crt), and Primary Certificates (your_domain_name.crt).
- Open a text editor (such as wordpad) and paste the entire body of each certificate into one text file in the following order:
- The Primary Certificate - your_domain_name.crt
- The Intermediate Certificate - DigiCertCA.crt
- The Root Certificate - TrustedRoot.crt
Make sure to include the beginning and end tags on each certificate. The result should look like this:-----BEGIN CERTIFICATE-----
(Your Primary SSL certificate: your_domain_name.crt)
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
(Your Intermediate certificate: DigiCertCA.crt)
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
(Your Root certificate: TrustedRoot.crt)
-----END CERTIFICATE-----Save the combined file as your_domain_name.pem. The .pem file is now ready to use.
Creating a .pem with the Server and Intermediate Certificates
Linux Generate Private Key Pem File
- Log into your DigiCert Management Console and download your Intermediate (DigiCertCA.crt) and Primary Certificates (your_domain_name.crt).
- Open a text editor (such as wordpad) and paste the entire body of each certificate into one text file in the following order:
- The Primary Certificate - your_domain_name.crt
- The Intermediate Certificate - DigiCertCA.crt
Make sure to include the beginning and end tags on each certificate. The result should look like this:-----BEGIN CERTIFICATE-----
(Your Primary SSL certificate: your_domain_name.crt)
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
(Your Intermediate certificate: DigiCertCA.crt)
-----END CERTIFICATE-----Save the combined file as your_domain_name.pem. The .pem file is now ready to use.
Linux Generate Private Key Pem File
Creating a .pem with the Private Key and Entire Trust Chain
Linux Generate Private Key Pem Key
- Log into your DigiCert Management Console and download your Intermediate (DigiCertCA.crt) and Primary Certificates (your_domain_name.crt).
- Open a text editor (such as wordpad) and paste the entire body of each certificate into one text file in the following order:
- The Private Key - your_domain_name.key
- The Primary Certificate - your_domain_name.crt
- The Intermediate Certificate - DigiCertCA.crt
- The Root Certificate - TrustedRoot.crt
Make sure to include the beginning and end tags on each certificate. The result should look like this:-----BEGIN RSA PRIVATE KEY-----
(Your Private Key: your_domain_name.key)
-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----
(Your Primary SSL certificate: your_domain_name.crt)
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
(Your Intermediate certificate: DigiCertCA.crt)
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
(Your Root certificate: TrustedRoot.crt)
-----END CERTIFICATE-----Save the combined file as your_domain_name.pem. The .pem file is now ready to use.