hello git

hash.ts

@@ -0,0 +1,62 @@
+import IGA from './IGA';
+import fs from 'fs';
+
+const args = process.argv.slice(2)
+const version = "1.1"
+
+function printHelp() {
+    console.log("IGA commandline tool v" + version)
+    console.log("Usage: tsx hash.ts <hash|verify> <input file> [<hash to verify>] [options]");
+    console.log("Options:");
+    console.log("[<salt = 0>] [<iterations = 32>] [<length of the hash = 32>]");
+}
+
+if (args[0] == "hash") {
+    if (args.length < 2) {
+        console.log("Not enough arguments");
+        printHelp()
+        process.exit(0)
+    }
+    if (!fs.existsSync(args[1])) {
+        console.log("File not found: " + args[1])
+        process.exit(0)
+    }
+    let fileData = fs.readFileSync(args[1], 'utf8');
+    let salt = args[2] ? parseInt(args[2]) : 0
+    let iterations = args[3] ? parseInt(args[3]) : 32
+    let len = args[4] ? parseInt(args[4]) : 32
+    try {
+        let hash = IGA.hash(fileData, salt, iterations, len)
+        console.log(hash)
+    } catch (e) {
+        console.error("Error while creating hash: " + e.stack)
+    }
+} else if (args[0] == "verify") {
+    if (args.length < 3) {
+        console.log("Not enough arguments");
+        printHelp()
+        process.exit(0)
+    }
+    if (!fs.existsSync(args[1])) {
+        console.log("File not found: " + args[1])
+        process.exit(0)
+    }
+    let fileData = fs.readFileSync(args[1], 'utf8');
+    let hashToVerify = args[2]
+    let salt = args[3] ? parseInt(args[3]) : 0
+    let iterations = args[4] ? parseInt(args[4]) : 32
+    let len = args[5] ? parseInt(args[5]) : 32
+    try {
+        let verify = IGA.verifyHash(fileData, hashToVerify, salt, iterations, len)
+        if (verify.valid) {
+            console.log("Hash is valid!")
+        } else {
+            console.log("Hash is invalid!")
+            console.log("Reason: " + verify.reason)
+        }
+    } catch (e) {
+        console.error("Error while verifying hash: " + e.stack)
+    }
+} else {
+    printHelp()
+}