| B1 | |
|---|---|
| Filename extension | .b1 |
| Internet media type | application/x-b1 |
| Developed by | Catalina Group Ltd |
| Initial release | 2011 |
| Type of format | Data compression |
B1 is anopen archive file format that supportsdata compression and archiving[citation needed]. B1 files use thefile extension ".b1" or ".B1" and theMIME media type application/x-b1. B1 incorporates theLZMA compressionalgorithm.[1]B1 archive combines a number of files and folders into one or more volumes, optionally adding compression andencryption. Construction of the B1 archive involves creating a binary stream of records and building volumes of that stream. The B1 archive format supports password-basedAES-256 encryption.[2]B1 files are created and opened with its native open-source B1 Pack Tool, as well asB1 Free Archiver utility.[3][4]
B1 Pack is an open-source software project that produces a cross-platform command-line tool and a Java library for creating and extracting file archives in the B1 archive format. Source code of the project is published atGitHub.[5]B1 Pack Project is released under theApache License.[6] The B1 Pack Tool module builds a single executable JAR file which can create, list, and extract B1 archive files from acommand-line interface.[7]
| Archiving only | |
|---|---|
| Compressing only | |
| Archiving and compressing | |
| Software packaging and distributing | |
| Document packaging and distributing | |
