.Pem File & .PPK file Format 

PEM files are used to transmit emails privately using Privacy Enhanced Mail Certificates. The person receiving this email can be sure that it was sent by the person who claims to have sent it and that it was not altered in transit or seen by anyone else.

The difficulty of emailing binary data gave rise to PEM files. The PEM format uses base64 encoding to convert binary into an ASCII string.

Although newer, more secure methods have supplanted the PEM format, the PEM container is still used to store root certificates, public and private keys, certificate authority files, and other data.

A “.PEM file” represents data with the appropriate suffix since it can hold many sorts of data. The most typical suffix is .PEM, but there are others, such as .key for private keys and .cer or .crt for certificates. The PEM file format encodes information using the base64 binary-to-text encoding algorithm to represent binary data in an ASCII string.

Users need a specific application to convert files with .pem extensions, unlike most file formats, which may be easily converted using online conversion tools. One such program that efficiently converts .pem files to .ppk is PuTTYgen.

Most PPK files are associated with PuTTY. As a client for the SSH, Telnet, rlogin, and raw TCP computer protocols, PuTTY is a terminal emulator program. Although TTY is the name for a terminal in the Unix heritage and is typically understood to be short for teletype, the name PuTTY has no clear meaning.

PEM converting to PPK

The PuTTY application must be downloaded and installed as a prerequisite. PuTTYgen is already downloaded as part of the networking client; therefore, no additional download is required. Users must install the whole suite by downloading the most recent version of the program. PuTTYgen can convert .pem files to .ppk format after installation. We will outline the exact processes to convert files on both Windows and Unix.

Step 1: Click on Start menu> All Programs > PuTTY > PuTTYgen.

Step 2: The user will see alternatives in the next box depending on the crucial they want to create. Choose the RSA (Rivest-Shamir-Adleman) option. A popular public-key cryptosystem for transmitting data securely is called RSA. Those using an older version of PuTTY should choose “SSH-2 RSA.”

Step 3: Next, select “Load” from the menu. PuTTY will only display files with the .ppk file extension because it supports its native file format. Users must select the ‘All Files’ option from the drop-down menu. All critical files, including the .pem file, will be displayed.

Step 4: Select the .pem file you wish to convert now. PuTTYgen is used for SSH connectivity, as was already indicated. Thus users need to choose the precise file they want to convert and click “Open.” On “OK,” click to confirm.

Step 5:  Clicking “Save private key” in the resulting window will convert and save the key file in a PuTTY compatible format.

Step 6: A warning against saving the key without a passphrase will be displayed by PuTTYgen. On it, press “Yes.”

Step 7: Give your file a name now, and PuTTYgen will instantly add the .ppk file extension.

Note – Passphrases offer additional protection, but entering the passphrase each time a user copies files can get tiresome. However, the decision to install the additional layer of security is entirely up to the user.

Users can connect their local workstation with distant servers once the file has been translated to a format compatible with PuTTY.