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Open archive file format From Wikipedia, the free encyclopedia
B1 is an open archive file format that supports data compression and archiving[citation needed]. B1 files use the file extension ".b1" or ".B1" and the MIME media type application/x-b1. B1 incorporates the LZMA compression algorithm.[1] B1 archive combines a number of files and folders into one or more volumes, optionally adding compression and encryption. Construction of the B1 archive involves creating a binary stream of records and building volumes of that stream. The B1 archive format supports password-based AES-256 encryption.[2] B1 files are created and opened with its native open-source B1 Pack Tool, as well as B1 Free Archiver utility.[3][4]
Filename extension |
.b1 |
---|---|
Internet media type |
application/x-b1 |
Developed by | Catalina Group Ltd |
Initial release | 2011 |
Type of format | Data compression |
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 at GitHub.[5] B1 Pack Project is released under the Apache License.[6] The B1 Pack Tool module builds a single executable JAR file which can create, list, and extract B1 archive files from a command-line interface.[7]
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