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.pfx file extension

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.pfx

1. Post Effect plug-in file for Animation Master.

Contributed by Noel Pickering (www.hash.com)

Relevant links:

www.hash.com/products/am.asp - Animation Master.

2. Personal Information Exchange file. This file contains public and private key information used to securely sign, encrypt or authenticate something. Typically used as a means of creating certificates to authenticate websites, applications or encrypted file systems.

A .pfx file contains two certificates, a personal or site certificate and a signer certificate. The personal certificate, which is also known as a site certificate, contains both a public and a private key. The signer certificate (or CA certificate) contains a public key used to authenticate the signing authority, i.e. the authority which is vouching for the validity of the certificate.

On a computer running Windows a .pfx file (and accompanying public file recovery certificate .cer file) can be created using the cipher command line tool. The syntax for generating a new pair of .cer and .pfx files:

cipher /r:file-name

This will generate two files: file-name.pfx and file-name.cer.

Relevant links:

http://blogs.msdn.com/maximelamure/archive/2007/01/24/create-your-own-pfx-file-for-clickonce.aspx - Create your own .pfx file for ClickOnce.
http://support.microsoft.com/kb/887414 - How to add an EFS recovery agent in Windows XP, article covers the use of the cipher command line tool.

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Can you add to this? Do you know of any applications not already listed that will open or work with this type of file? Can you contribute any additional file format information? Please report any errors or omissions by e-mail to feedback@cryer.co.uk.