A .KEYCHAIN file stores authentication data encrypted by the Apple Keychain program in Mac OS X. It contains passwords, certificates, private keys and other authentication information. When users enab...
A .KEYCHAIN file stores authentication data encrypted by the Apple Keychain program in Mac OS X. It contains passwords, certificates, private keys and other authentication information. When users enable the option to remember login details, the system stores this data in .KEYCHAIN files to automatically log them in later.
The .KEYCHAIN format was introduced in Mac OS 8.6 for password management. It has been included in all later versions of Mac OS X. While over 1,000 file types use the .KEYCHAIN extension, most are not compatible. The .KEYCHAIN file format and program were developed by Apple specifically for Mac OS X.
Our tools for working with .KEYCHAIN files include openers, converters, viewers and editors. A common way to open unknown file types is to associate the extension with the correct software in the Windows Registry. However, many files just contain simple text data.
The default .KEYCHAIN filename is Login.keychain. It stores user passwords, website logins, trusted identities, developer certificates and other authentication keys. It is located in the user’s profile folder.
To open a .KEYCHAIN file, the system needs the necessary resources to run Apple’s Keychain Access app. Also check that the file copied or downloaded correctly and completely.
Keychain Access
Security Command Line