Added 'GOST Hash' operation

src/core/operations/GOSTHash.mjs

@@ -0,0 +1,71 @@
+/**
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2019
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+import OperationError from "../errors/OperationError";
+import GostDigest from "../vendor/gost/gostDigest";
+import {toHexFast} from "../lib/Hex";
+
+/**
+ * GOST hash operation
+ */
+class GOSTHash extends Operation {
+
+    /**
+     * GOSTHash constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "GOST hash";
+        this.module = "Hashing";
+        this.description = "The GOST hash function, defined in the standards GOST R 34.11-94 and GOST 34.311-95 is a 256-bit cryptographic hash function. It was initially defined in the Russian national standard GOST R 34.11-94 <i>Information Technology – Cryptographic Information Security – Hash Function</i>. The equivalent standard used by other member-states of the CIS is GOST 34.311-95.<br><br>This function must not be confused with a different Streebog hash function, which is defined in the new revision of the standard GOST R 34.11-2012.<br><br>The GOST hash function is based on the GOST block cipher.";
+        this.infoURL = "https://wikipedia.org/wiki/GOST_(hash_function)";
+        this.inputType = "ArrayBuffer";
+        this.outputType = "string";
+        this.args = [
+            {
+                "name": "S-Box",
+                "type": "option",
+                "value": [
+                    "D-A",
+                    "D-SC",
+                    "E-TEST",
+                    "E-A",
+                    "E-B",
+                    "E-C",
+                    "E-D",
+                    "E-SC",
+                    "E-Z",
+                    "D-TEST"
+                ]
+            }
+        ];
+    }
+
+    /**
+     * @param {ArrayBuffer} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        try {
+            const sBox = args[1];
+            const gostDigest = new GostDigest({
+                name: "GOST R 34.11",
+                version: 1994,
+                sBox: sBox
+            });
+
+            return toHexFast(gostDigest.digest(input));
+        } catch (err) {
+            throw new OperationError(err);
+        }
+    }
+
+}
+
+export default GOSTHash;