Add Argon2 hash compare operation

src/core/config/Categories.json

@@ -380,6 +380,7 @@
             "Bcrypt parse",
             "Scrypt",
             "Argon2",
+            "Argon2 compare",
             "NT Hash",
             "LM Hash",
             "Fletcher-8 Checksum",

src/core/operations/Argon2Compare.mjs

@@ -0,0 +1,58 @@
+/**
+ * @author Tan Zhen Yong [tzy@beyondthesprawl.com]
+ * @copyright Crown Copyright 2019
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import argon2 from "argon2-browser";
+
+/**
+ * Argon2 compare operation
+ */
+class Argon2Compare extends Operation {
+
+    /**
+     * Argon2Compare constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Argon2 compare";
+        this.module = "Crypto";
+        this.description = "Tests whether the input matches the given Argon2 hash. To test multiple possible passwords, use the 'Fork' operation.";
+        this.infoURL = "https://wikipedia.org/wiki/Argon2";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [
+            {
+                "name": "Hash",
+                "type": "string",
+                "value": ""
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    async run(input, args) {
+        const encoded = args[0];
+
+        try {
+            await argon2.verify({
+                pass: input,
+                encoded
+            });
+
+            return `Match: ${input}`;
+        } catch (err) {
+            return "No match";
+        }
+    }
+
+}
+
+export default Argon2Compare;