Updating encrypt and decrypt tools

Author: martinthomson

nodejs/decrypt.js

@@ -6,7 +6,7 @@ var ece = require('./ece.js');
 
 if (process.argv.length < 7) {
   console.warn('Usage: ' + process.argv.slice(0, 2).join(' ') +
-               ' <receiver-private> <receiver-public> <sender-public> <salt> <message>');
+               ' <receiver-private> <receiver-public> <sender-public> <salt> <message> [auth-secret]');
   process.exit(2);
 }
 
@@ -23,7 +23,8 @@ ece.saveKey('keyid', receiver, "P-256");
 var result = ece.decrypt(base64.decode(process.argv[6]), {
   keyid: 'keyid',
   dh: process.argv[4],
-  salt: process.argv[5]
+  salt: process.argv[5],
+  authSecret: process.argv[7]
 });
 
 console.log(base64.encode(result));

nodejs/encrypt.js

@@ -0,0 +1,28 @@
+'use strict';
+
+var base64 = require('urlsafe-base64');
+var crypto = require('crypto');
+var ece = require('./ece.js');
+
+if (process.argv.length < 4) {
+  console.warn('Usage: ' + process.argv.slice(0, 2).join(' ') +
+               ' <receiver-public> <message> [auth-secret]');
+  process.exit(2);
+}
+
+var sender = crypto.createECDH('prime256v1');
+sender.generateKeys();
+ece.saveKey('keyid', sender, "P-256");
+
+var salt = base64.encode(crypto.randomBytes(16));
+
+var result = ece.encrypt(base64.decode(process.argv[3]), {
+  keyid: 'keyid',
+  dh: process.argv[2],
+  salt: salt,
+  authSecret: process.argv[4]
+});
+
+console.log("Salt: " + salt);
+console.log("Public Key: " + base64.encode(sender.getPublicKey()));
+console.log("Encrypted Message: " + base64.encode(result));