Opening a P12 File

The P12 file type is primarily associated with OpenSSL.

P12	File extension: P12
	File type:	public key certificate

What is a P12 file?

P12 files mostly belong to OpenSSL by OpenSSL Developers. A P12 file is an archive of private/public keys and their related X.509 certificates. A P12 file may also contain a certificate revocation list and other chain of trust information. This file is usually signed and encrypted to prevent unauthorized access. It is mainly used to transfer information between Internet services. The pkcs12 command in OpenSSL is the primary program for creating, parsing, and reading a P12 file. The Certificate Manager in Windows and the Keychain Access on macOS can store and use keys and certificates saved in P12 files.

How to open P12 files

You need a suitable software like OpenSSL to open a P12 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your P12 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a P12 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online P12 Text Viewer

Choose your .p12 file to analyze

or drag and drop it here

Online File Viewer

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P12 file format details:

The file format determines how the data is stored in the file. A file format is determined by the file extension and signature, so JPEG images have the extension .jpg and the first bytes in the file are ÿØÿ. Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Below is our analysis of the P12 files:

The P12 extension is very commonly found and contains well-defined data in an established structure that can be read by various programs. But the following two file formats are common:

• 90% of all P12 files use the popular certificate file format. A digital certificate is a unique, digitally signed document which authoritatively identifies the identity of an individual or organization. Using public key cryptography, its authenticity can be verified to ensure that the software or website you are using is legitimate. These are binary files, so they do not contain words or text. The files are on average 3 KB in size and range from 2 KB to 6 KB. This file type is based on cutting-edge technology. Such files are related to cert, keystore, certificate, certificates, client, auth, ciudadano and prod.
• 1% of all P12 files store the data in the KEY file format. A public or private key is used in Public-key cryptography to digitally sign or verify documents, software or websites, or to authentice a user. If you open these files in a text editor, you can view and read the content yourself. P12 files are between 1 KB and 3 KB in size. The following keywords are characteristic: BEGIN and CERTIFICATE.

All other P12 files (9%) have no consistent format. These files sometimes refer to push, indonesia, ewallet, bank, user or server. If you want to find out which format your P12 file belongs to, just click on the button "Choose your .p12 file to analyze".