diff --git a/src/core/config/Categories.json b/src/core/config/Categories.json
index 53ca796d..ad8ec0e7 100755
--- a/src/core/config/Categories.json
+++ b/src/core/config/Categories.json
@@ -96,6 +96,7 @@
             "A1Z26 Cipher Encode",
             "A1Z26 Cipher Decode",
             "Atbash Cipher",
+            "CipherSaber2",
             "Substitute",
             "Derive PBKDF2 key",
             "Derive EVP key",
diff --git a/src/core/operations/CipherSaber2.mjs b/src/core/operations/CipherSaber2.mjs
new file mode 100644
index 00000000..27945186
--- /dev/null
+++ b/src/core/operations/CipherSaber2.mjs
@@ -0,0 +1,98 @@
+/**
+ * @author n1073645 [n1073645@gmail.com]
+ * @copyright Crown Copyright 2020
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import crypto from "crypto";
+import Utils from "../Utils.mjs";
+
+/**
+ * CipherSaber2 operation
+ */
+class CipherSaber2 extends Operation {
+
+    /**
+     * CipherSaber2 constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "CipherSaber2";
+        this.module = "Crypto";
+        this.description = "";
+        this.infoURL = "";
+        this.inputType = "ArrayBuffer";
+        this.outputType = "ArrayBuffer";
+        this.args = [
+            {
+                name: "Key",
+                type: "string",
+                value: ""
+            },
+            {
+                name: "Rounds",
+                type: "number",
+                value: 20
+            },
+            {
+                name: "Mode",
+                type: "option",
+                value: ["Encrypt", "Decrypt"]
+            }
+        ];
+    }
+
+    /**
+     * @param {ArrayBuffer} input
+     * @param {Object[]} args
+     * @returns {ArrayBuffer}
+     */
+    run(input, args) {
+        input = new Uint8Array(input);
+        const ivp = new Uint8Array(args[0].length + 10);
+        ivp.set(new Uint8Array(Utils.strToByteArray(args[0])), 0);
+        const result = [];
+        let tempIVP;
+
+        // Assign into initialisation vector based on cipher mode.
+        if (args[2] === "Encrypt") {
+            tempIVP = crypto.randomBytes(10);
+            for (let m = 0; m < 10; m++)
+                result.push(tempIVP[m]);
+        } else {
+            tempIVP = input.slice(0, 10);
+            input = input.slice(10);
+        }
+        ivp.set(tempIVP, args[0].length);
+        const state = new Array(256).fill(0);
+        let j = 0, i = 0;
+
+        // Mixing states based off of IV.
+        for (let i = 0; i < 256; i++)
+            state[i] = i;
+        const ivpLength = ivp.length;
+        for (let r = 0; r < args[1]; r ++) {
+            for (let k = 0; k < 256; k++) {
+                j = (j + state[k] + ivp[k % ivpLength]) % 256;
+                [state[k], state[j]] = [state[j], state[k]];
+            }
+        }
+        j = 0;
+        i = 0;
+
+        // XOR cipher with key.
+        for (let x = 0; x < input.length; x++) {
+            i = (++i) % 256;
+            j = (j + state[i]) % 256;
+            [state[i], state[j]] = [state[j], state[i]];
+            const n = (state[i] + state[j]) % 256;
+            result.push(state[n] ^ input[x]);
+        }
+        return new Uint8Array(result).buffer;
+    }
+
+}
+
+export default CipherSaber2;