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.
Add the following dependency to your project.clj file:
[magnet/biscuit "1.1.0"]Digests can be calculated on raw byte arrays or on strings. When calculated on strings, they need to be converted to raw bytes arrays. In that case, you can specify the character encoding of the string. If you don't specify it, UTF-8 encoding is used by default.
user> (require '[biscuit.core :as digest])
nil
user> (digest/crc8 (byte-array [195, 161, 195, 169, 195, 173, 195, 179, 195, 186]))
166
user> (digest/crc8 (byte-array [225, 0, 233, 0, 237, 0. 243, 0, 250, 0]))
203
user> (digest/crc8 "hobnob")
17
user> (digest/crc8 "áéíóú")
166
user> (digest/crc8 "áéíóú" "UTF-8")
166
user> (digest/crc8 "áéíóú" "ISO-8859-1")
7
user> (digest/crc8 "áéíóú" "UTF-16LE")
203
user> 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.
This library is strongly influenced by the digest-crc ruby gem.
Copyright © 2012 Henry Garner Copyright © 2019 Magnet S. Coop.
Distributed under the Eclipse Public License, the same as Clojure.