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File Type of the Day

Today • October 4

.MDF

Media Descriptor File

An MDF file is a disc image file created by disc authoring and optical media applications, most notably Alcohol 120%. It stores the raw data copied from an optical disc, such as a CD, DVD, or Blu-ray disc, preserving the contents in a digital file.

October 3

.PPK

PuTTY Private Key File

File created by PuTTYgen (PuTTY Key Generator), a program used for generating keys for public-key cryptography; stores a private key generated by the program; used for enabling secure communication with a remote entity that has the corresponding public key.

October 2

.PEM

Privacy Enhanced Mail Certificate

A PEM file is a Base64-encoded certificate file used to authenticate a secure website. It may contain a private key, certificate authority (CA) server certificate, or other various certificates that make up the trust chain.

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