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 | |||||
| P7M - Extension Details | |||||
| Date Added: | January 01, 1970 | ||||
| File Extension: | .P7M | ||||
| Description 1: | File extension .P7M is associated with the PKCS#7 MIME Message. S/MIME stands for Secure/Multiple Internet Mail Extensions. It offers a consistent way of sending and receiving secure MIME data. S/MIME is based on popular Net MIME standards, providing cryptographic security services for electronic messaging programs like message integrity, nonrepudiation of origin (via digital signatures), privacy and data security (through encryption), and authentication. | ||||
| File Type: | Encoded and Encrypted file | ||||
| Mode: | ASCII | ||||
| Program(s) to Open: | Associated application: p7mViewer from Cryptigo | ||||
| Common: | |||||
| Extension: | |||||
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