diff --git a/src/core/operations/AESDecrypt.mjs b/src/core/operations/AESDecrypt.mjs
deleted file mode 100644
index 8fe0b93c..00000000
--- a/src/core/operations/AESDecrypt.mjs
+++ /dev/null
@@ -1,109 +0,0 @@
-/**
- * @author n1474335 [n1474335@gmail.com]
- * @copyright Crown Copyright 2016
- * @license Apache-2.0
- */
-
-import Operation from "../Operation.mjs";
-import Utils from "../Utils.mjs";
-import forge from "node-forge/dist/forge.min.js";
-import OperationError from "../errors/OperationError.mjs";
-
-/**
- * AES Decrypt operation
- */
-class AESDecrypt extends Operation {
-
-    /**
-     * AESDecrypt constructor
-     */
-    constructor() {
-        super();
-
-        this.name = "AES Decrypt";
-        this.module = "Ciphers";
-        this.description = "Advanced Encryption Standard (AES) is a U.S. Federal Information Processing Standard (FIPS). It was selected after a 5-year process where 15 competing designs were evaluated.<br><br><b>Key:</b> The following algorithms will be used based on the size of the key:<ul><li>16 bytes = AES-128</li><li>24 bytes = AES-192</li><li>32 bytes = AES-256</li></ul><br><br><b>IV:</b> The Initialization Vector should be 16 bytes long. If not entered, it will default to 16 null bytes.<br><br><b>Padding:</b> In CBC and ECB mode, PKCS#7 padding will be used.<br><br><b>GCM Tag:</b> This field is ignored unless 'GCM' mode is used.";
-        this.infoURL = "https://wikipedia.org/wiki/Advanced_Encryption_Standard";
-        this.inputType = "string";
-        this.outputType = "string";
-        this.args = [
-            {
-                "name": "Key",
-                "type": "toggleString",
-                "value": "",
-                "toggleValues": ["Hex", "UTF8", "Latin1", "Base64"]
-            },
-            {
-                "name": "IV",
-                "type": "toggleString",
-                "value": "",
-                "toggleValues": ["Hex", "UTF8", "Latin1", "Base64"]
-            },
-            {
-                "name": "Mode",
-                "type": "option",
-                "value": ["CBC", "CFB", "OFB", "CTR", "GCM", "ECB"]
-            },
-            {
-                "name": "Input",
-                "type": "option",
-                "value": ["Hex", "Raw"]
-            },
-            {
-                "name": "Output",
-                "type": "option",
-                "value": ["Raw", "Hex"]
-            },
-            {
-                "name": "GCM Tag",
-                "type": "toggleString",
-                "value": "",
-                "toggleValues": ["Hex", "UTF8", "Latin1", "Base64"]
-            }
-        ];
-    }
-
-    /**
-     * @param {string} input
-     * @param {Object[]} args
-     * @returns {string}
-     *
-     * @throws {OperationError} if cannot decrypt input or invalid key length
-     */
-    run(input, args) {
-        const key = Utils.convertToByteString(args[0].string, args[0].option),
-            iv = Utils.convertToByteString(args[1].string, args[1].option),
-            mode = args[2],
-            inputType = args[3],
-            outputType = args[4],
-            gcmTag = Utils.convertToByteString(args[5].string, args[5].option);
-
-        if ([16, 24, 32].indexOf(key.length) < 0) {
-            throw new OperationError(`Invalid key length: ${key.length} bytes
-
-The following algorithms will be used based on the size of the key:
-  16 bytes = AES-128
-  24 bytes = AES-192
-  32 bytes = AES-256`);
-        }
-
-        input = Utils.convertToByteString(input, inputType);
-
-        const decipher = forge.cipher.createDecipher("AES-" + mode, key);
-        decipher.start({
-            iv: iv.length === 0 ? "" : iv,
-            tag: gcmTag
-        });
-        decipher.update(forge.util.createBuffer(input));
-        const result = decipher.finish();
-
-        if (result) {
-            return outputType === "Hex" ? decipher.output.toHex() : decipher.output.getBytes();
-        } else {
-            throw new OperationError("Unable to decrypt input with these parameters.");
-        }
-    }
-
-}
-
-export default AESDecrypt;