diff --git a/src/core/operations/CRC8Checksum.mjs b/src/core/operations/CRC8Checksum.mjs
deleted file mode 100644
index 193cadf9..00000000
--- a/src/core/operations/CRC8Checksum.mjs
+++ /dev/null
@@ -1,157 +0,0 @@
-/**
- * @author mshwed [m@ttshwed.com]
- * @copyright Crown Copyright 2019
- * @license Apache-2.0
- */
-
-import Operation from "../Operation.mjs";
-import OperationError from "../errors/OperationError.mjs";
-
-import { toHexFast } from "../lib/Hex.mjs";
-
-/**
- * CRC-8 Checksum operation
- */
-class CRC8Checksum extends Operation {
-
- /**
- * CRC8Checksum constructor
- */
- constructor() {
- super();
-
- this.name = "CRC-8 Checksum";
- this.module = "Crypto";
- this.description = "A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data.
The CRC was invented by W. Wesley Peterson in 1961.";
- this.infoURL = "https://wikipedia.org/wiki/Cyclic_redundancy_check";
- this.inputType = "ArrayBuffer";
- this.outputType = "string";
- this.args = [
- {
- "name": "Algorithm",
- "type": "option",
- "value": [
- "CRC-8",
- "CRC-8/CDMA2000",
- "CRC-8/DARC",
- "CRC-8/DVB-S2",
- "CRC-8/EBU",
- "CRC-8/I-CODE",
- "CRC-8/ITU",
- "CRC-8/MAXIM",
- "CRC-8/ROHC",
- "CRC-8/WCDMA"
- ]
- }
- ];
- }
-
- /**
- * Generates the pre-computed lookup table for byte division
- *
- * @param polynomial
- */
- calculateCRC8LookupTable(polynomial) {
- const crc8Table = new Uint8Array(256);
-
- let currentByte;
- for (let i = 0; i < 256; i++) {
- currentByte = i;
- for (let bit = 0; bit < 8; bit++) {
- if ((currentByte & 0x80) !== 0) {
- currentByte <<= 1;
- currentByte ^= polynomial;
- } else {
- currentByte <<= 1;
- }
- }
-
- crc8Table[i] = currentByte;
- }
-
- return crc8Table;
- }
-
- /**
- * Calculates the CRC-8 Checksum from an input
- *
- * @param {ArrayBuffer} input
- * @param {number} polynomial
- * @param {number} initializationValue
- * @param {boolean} inputReflection
- * @param {boolean} outputReflection
- * @param {number} xorOut
- */
- calculateCRC8(input, polynomial, initializationValue, inputReflection, outputReflection, xorOut) {
- const crcSize = 8;
- const crcTable = this.calculateCRC8LookupTable(polynomial);
-
- let crc = initializationValue !== 0 ? initializationValue : 0;
- let currentByte, position;
-
- input = new Uint8Array(input);
- for (const inputByte of input) {
- currentByte = inputReflection ? this.reverseBits(inputByte, crcSize) : inputByte;
-
- position = (currentByte ^ crc) & 255;
- crc = crcTable[position];
- }
-
- crc = outputReflection ? this.reverseBits(crc, crcSize) : crc;
-
- if (xorOut !== 0) crc = crc ^ xorOut;
-
- return toHexFast(new Uint8Array([crc]));
- }
-
- /**
- * Reverse the bits for a given input byte.
- *
- * @param {number} input
- */
- reverseBits(input, hashSize) {
- let reversedByte = 0;
- for (let i = hashSize - 1; i >= 0; i--) {
- reversedByte |= ((input & 1) << i);
- input >>= 1;
- }
-
- return reversedByte;
- }
-
- /**
- * @param {ArrayBuffer} input
- * @param {Object[]} args
- * @returns {string}
- */
- run(input, args) {
- const algorithm = args[0];
-
- switch (algorithm) {
- case "CRC-8":
- return this.calculateCRC8(input, 0x7, 0x0, false, false, 0x0);
- case "CRC-8/CDMA2000":
- return this.calculateCRC8(input, 0x9B, 0xFF, false, false, 0x0);
- case "CRC-8/DARC":
- return this.calculateCRC8(input, 0x39, 0x0, true, true, 0x0);
- case "CRC-8/DVB-S2":
- return this.calculateCRC8(input, 0xD5, 0x0, false, false, 0x0);
- case "CRC-8/EBU":
- return this.calculateCRC8(input, 0x1D, 0xFF, true, true, 0x0);
- case "CRC-8/I-CODE":
- return this.calculateCRC8(input, 0x1D, 0xFD, false, false, 0x0);
- case "CRC-8/ITU":
- return this.calculateCRC8(input, 0x7, 0x0, false, false, 0x55);
- case "CRC-8/MAXIM":
- return this.calculateCRC8(input, 0x31, 0x0, true, true, 0x0);
- case "CRC-8/ROHC":
- return this.calculateCRC8(input, 0x7, 0xFF, true, true, 0x0);
- case "CRC-8/WCDMA":
- return this.calculateCRC8(input, 0x9B, 0x0, true, true, 0x0);
- default:
- throw new OperationError("Unknown checksum algorithm");
- }
- }
-}
-
-export default CRC8Checksum;