Initial migration to library; add decryption operation

src/core/operations/SM2Decrypt.mjs

@@ -0,0 +1,65 @@
+/**
+ * @author flakjacket95 [dflack95@gmail.com]
+ * @copyright Crown Copyright 2024
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
+
+import { SM2 } from "../lib/SM2.mjs";
+
+/**
+ * SM2Decrypt operation
+ */
+class SM2Decrypt extends Operation {
+
+    /**
+     * SM2Decrypt constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "SM2 Decrypt";
+        this.module = "Crypto";
+        this.description = "Decrypts a message utilizing the SM2 standard";
+        this.infoURL = ""; // Usually a Wikipedia link. Remember to remove localisation (i.e. https://wikipedia.org/etc rather than https://en.wikipedia.org/etc)
+        this.inputType = "string";
+        this.outputType = "ArrayBuffer";
+        this.args = [
+            {
+                name: "Private Key",
+                type: "string",
+                value: "DEADBEEF"
+            },
+            {
+                "name": "Input Format",
+                "type": "option",
+                "value": ["C1C3C2", "C1C2C3"]
+            },
+            {
+                name: "Curve",
+                type: "option",
+                "value": ["sm2p256v1"]
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {ArrayBuffer}
+     */
+    run(input, args) {
+        const [privateKey, inputFormat, curveName] = args;
+
+        var sm2 = new SM2(curveName, inputFormat);
+        sm2.setPrivateKey(privateKey);
+
+        var result = sm2.decrypt(new Uint8Array(input))
+        return result
+    }
+
+}
+
+export default SM2Decrypt;