Opening a KEYCHAIN File

The KEYCHAIN file type is primarily associated with Keychain Access.

KEYCHAIN	File extension: KEYCHAIN
	File type:	encrypted database

What is a KEYCHAIN file

KEYCHAIN files mostly belong to Keychain Access. KEYCHAIN files are used by macOS to store your security credentials. They serve as an encrypted database that holds passwords, private keys, and certificates. This file type is central to the Keychain Access application.
Key details compiled by FilExt.com:

They maintain macOS password storage.

They keep both authentication credentials and encryption keys.

They work only with the Keychain Access tool.

FilExt.com note: For more help, see Apple support.

How to open KEYCHAIN files

You need a suitable software like Keychain Access to open a KEYCHAIN 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 KEYCHAIN file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a KEYCHAIN file directly in the browser:. Just drag the file onto this browser window and drop it.

Online KEYCHAIN Text Viewer

Choose your .keychain file to analyze

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Programs that open and convert KEYCHAIN files:

Keychain Access
See the previous paragraphs to learn more about the main application. KEYCHAIN files are often referred to as Keychain Access databases because this type of file is primarily created or used by this software.
Keychain Access
A *.KEYCHAIN file is an encrypted container used by the macOS Keychain Access application. It stores various types of sensitive information, including passwords, private keys, certificates, and Wi-Fi network configurations. The file format is proprietary and ensures the secure storage of credentials for websites, applications, servers, and other system services. Keychain Access uses these files to manage and protect user credentials, streamlining authentication and authorization processes across the system. This file format is classified as System.

KEYCHAIN file extension format:

The file format determines how the data is stored in the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. So you need a detailed analysis of a file to find out the format and the associated program. Our examination of the KEYCHAIN files comes to the following conclusion:

KEYCHAIN is rarely used as a file extension and is primarily used by a single program. The following file formats are most commonly found in KEYCHAIN files:

80% of all KEYCHAIN files start with the bytes kych crucial for this file format. They consist of unreadable binary data. The files are on average 77 KB in size and range from 20 KB to 470 KB. It is a modern file type. The following keywords are characteristic: kych and CSSM_DL_. An example of a file name is file20180601.keychain or apsd.keychain. These files can be linked to system, login, certificates and root.

All other KEYCHAIN files (20%) have different formats. Tagged as linecorp or trident. Drag & drop your file here to see the file format and a preview of your KEYCHAIN file!

Technical Data for KEYCHAIN File Extension

File classification:

Database

Related files:

p12, pem, pfx, crt, cer, plist, der, keychain-db, mag, maf

a keychain encrypted database is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with KEYCHAIN files

Associate the KEYCHAIN file extension with the correct application.
Update your software that should actually open encrypted databases. Because only the current version supports the latest KEYCHAIN file format. Search, therefore, e.g. on the manufacturer website after an available Keychain Access update.
To make sure that your KEYCHAIN file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .KEYCHAIN file online - secure, fast, and no downloads needed.