diff --git a/src/core/operations/BLAKE2b.mjs b/src/core/operations/BLAKE2b.mjs
deleted file mode 100644
index 6218f7f0..00000000
--- a/src/core/operations/BLAKE2b.mjs
+++ /dev/null
@@ -1,79 +0,0 @@
-/**
- * @author h345983745
- * @copyright Crown Copyright 2019
- * @license Apache-2.0
- */
-
-import Operation from "../Operation.mjs";
-import blakejs from "blakejs";
-import OperationError from "../errors/OperationError.mjs";
-import Utils from "../Utils.mjs";
-import { toBase64 } from "../lib/Base64.mjs";
-
-/**
- * BLAKE2b operation
- */
-class BLAKE2b extends Operation {
-
-    /**
-     * BLAKE2b constructor
-     */
-    constructor() {
-        super();
-
-        this.name = "BLAKE2b";
-        this.module = "Hashing";
-        this.description = `Performs BLAKE2b hashing on the input.  
-        <br><br> BLAKE2b is a flavour of the BLAKE cryptographic hash function that is optimized for 64-bit platforms and produces digests of any size between 1 and 64 bytes.
-        <br><br> Supports the use of an optional key.`;
-        this.infoURL = "https://wikipedia.org/wiki/BLAKE_(hash_function)#BLAKE2b_algorithm";
-        this.inputType = "ArrayBuffer";
-        this.outputType = "string";
-        this.args = [
-            {
-                "name": "Size",
-                "type": "option",
-                "value": ["512", "384", "256", "160", "128"]
-            }, {
-                "name": "Output Encoding",
-                "type": "option",
-                "value": ["Hex", "Base64", "Raw"]
-            }, {
-                "name": "Key",
-                "type": "toggleString",
-                "value": "",
-                "toggleValues": ["UTF8", "Decimal", "Base64", "Hex", "Latin1"]
-            }
-        ];
-    }
-
-    /**
-     * @param {ArrayBuffer} input
-     * @param {Object[]} args
-     * @returns {string} The input having been hashed with BLAKE2b in the encoding format specified.
-     */
-    run(input, args) {
-        const [outSize, outFormat] = args;
-        let key = Utils.convertToByteArray(args[2].string || "", args[2].option);
-        if (key.length === 0) {
-            key = null;
-        } else if (key.length > 64) {
-            throw new OperationError(["Key cannot be greater than 64 bytes", "It is currently " + key.length + " bytes."].join("\n"));
-        }
-
-        input = new Uint8Array(input);
-        switch (outFormat) {
-            case "Hex":
-                return blakejs.blake2bHex(input, key, outSize / 8);
-            case "Base64":
-                return toBase64(blakejs.blake2b(input, key, outSize / 8));
-            case "Raw":
-                return Utils.arrayBufferToStr(blakejs.blake2b(input, key, outSize / 8).buffer);
-            default:
-                return new OperationError("Unsupported Output Type");
-        }
-    }
-
-}
-
-export default BLAKE2b;