Biscuit

A Clojure library for calculating message digest(ive)s. The digest algorithms implemented in biscuit are all variations of CRCs and are designed to verify the integrity of messages sent over noisy channels.

Installation

Add the following dependency to your project.clj file:

[biscuit "1.1.0"]

Usage

(require '[biscuit.core :as digest])
(digest/crc8 "hobnob")
; 17

The following algorithms are supported:

• CRC1
• CRC5
• CRC8
• CRC8 1-wire
• CRC16
• CRC16 CCITT
• CRC16 DNP
• CRC16 Modbus
• CRC16 USB
• CRC16 XModem
• CTC16 ZModem
• CRC24
• CRC32
• CRC32c
• CRC32 MPEG
• CRC64

Performance notice: CRC64 implementation uses BigIntegers, as native Clojure Longs and BigInts are not big enough to hold the required values. This means the CRC64 implementation is extremely slow compared to the rest of the CRCs implemented by the library.

Credit

This library is strongly influenced by the digest-crc ruby gem.

License

Copyright © 2012 Henry Garner Copyright © 2019 Magnet S. Coop.

Distributed under the Eclipse Public License, the same as Clojure.