What is a file extension?Short answer: it's the set of letters after the period (.) in the name of a file. Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems. In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file. Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse! |
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| ABCDEFGHIJKLMNOPQRSTUVWXYZ | |||||
| EFR - Extension Details | |||||
| Date Added: | January 01, 1970 | ||||
| File Extension: | .EFR | ||||
| Description 1: | .EFR file extension is linked with Encryptafile Private Key File. This is the private key which is used to authenticate encrypted Encryptafile. It carries hexadecimal representation of the private key that is utilized to generate digital signature for a specific file. The private keys length must be greater than or equal to 16 bits, and it should be less than or equal to 7128 bits. | ||||
| File Type: | Encoded and Encrypted File | ||||
| Mode: | ASCII | ||||
| Program(s) to Open: | Windows: XenoSystems Encryptafile | ||||
| Common: | |||||
| Extension: | |||||
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