From 7a2c9ddbc498f9b7188a52fa41be3707c4804654 Mon Sep 17 00:00:00 2001
From: CPlusSharp <cgraefe83@gmail.com>
Date: Sun, 7 Nov 2021 15:46:25 +0100
Subject: [PATCH] Operation: Generate ECDSA Key Pair

---
 src/core/config/Categories.json              |  1 +
 src/core/operations/GenerateECDSAKeyPair.mjs | 98 ++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 src/core/operations/GenerateECDSAKeyPair.mjs

diff --git a/src/core/config/Categories.json b/src/core/config/Categories.json
index a519cf09..53b8a2f0 100644
--- a/src/core/config/Categories.json
+++ b/src/core/config/Categories.json
@@ -179,6 +179,7 @@
             "RSA Verify",
             "RSA Encrypt",
             "RSA Decrypt",
+            "Generate ECDSA Key Pair",
             "Parse SSH Host Key",
             "Parse CSR"
         ]
diff --git a/src/core/operations/GenerateECDSAKeyPair.mjs b/src/core/operations/GenerateECDSAKeyPair.mjs
new file mode 100644
index 00000000..c098fe01
--- /dev/null
+++ b/src/core/operations/GenerateECDSAKeyPair.mjs
@@ -0,0 +1,98 @@
+/**
+ * @author cplussharp
+ * @copyright Crown Copyright 2021
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import { cryptNotice } from "../lib/Crypt.mjs";
+import r from "jsrsasign";
+
+/**
+ * Generate ECDSA Key Pair operation
+ */
+class GenerateECDSAKeyPair extends Operation {
+
+    /**
+     * GenerateECDSAKeyPair constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Generate ECDSA Key Pair";
+        this.module = "Ciphers";
+        this.description = `Generate an ECDSA key pair with a given Curve.<br><br>${cryptNotice}`;
+        this.infoURL = "https://wikipedia.org/wiki/Elliptic_Curve_Digital_Signature_Algorithm";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [
+            {
+                name: "Elliptic Curve",
+                type: "option",
+                value: [
+                    "P-256",
+                    "P-384",
+                    "P-521"
+                ]
+            },
+            {
+                name: "Output Format",
+                type: "option",
+                value: [
+                    "PEM",
+                    "DER",
+                    "JWK"
+                ]
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    async run(input, args) {
+        const [curveName, outputFormat] = args;
+
+        return new Promise((resolve, reject) => {
+            let internalCurveName;
+            switch (curveName) {
+                case "P-256":
+                    internalCurveName = "secp256r1";
+                    break;
+                case "P-384":
+                    internalCurveName = "secp384r1";
+                    break;
+                case "P-521":
+                    internalCurveName = "secp521r1";
+                    break;
+            }
+            const keyPair = r.KEYUTIL.generateKeypair("EC", internalCurveName);
+
+            let pubKey;
+            let privKey;
+            let result;
+            switch (outputFormat) {
+                case "PEM":
+                    pubKey = r.KEYUTIL.getPEM(keyPair.pubKeyObj);
+                    privKey = r.KEYUTIL.getPEM(keyPair.prvKeyObj, "PKCS8PRV");
+                    result = pubKey + "\n" + privKey;
+                    break;
+                case "DER":
+                    result = keyPair.prvKeyObj.prvKeyHex;
+                    break;
+                case "JWK":
+                    pubKey = JSON.stringify(r.KEYUTIL.getJWKFromKey(keyPair.pubKeyObj));
+                    privKey = JSON.stringify(r.KEYUTIL.getJWKFromKey(keyPair.prvKeyObj));
+                    result = pubKey + "\n\n" + privKey;
+                    break;
+            }
+
+            resolve(result);
+        });
+    }
+
+}
+
+export default GenerateECDSAKeyPair;