test: add AES-256 padding crypto test

test/simple/test-crypto-padding-aes256.js

@@ -0,0 +1,67 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var common = require('../common');
+var assert = require('assert');
+
+try {
+  var crypto = require('crypto');
+} catch (e) {
+  console.log('Not compiled with OpenSSL support.');
+  process.exit();
+}
+
+function aes256(decipherFinal) {
+  var iv  = new Buffer('00000000000000000000000000000000', 'hex');
+  var key = new Buffer('0123456789abcdef0123456789abcdef' +
+                       '0123456789abcdef0123456789abcdef', 'hex');
+
+  function encrypt(val, pad) {
+        var c = crypto.createCipheriv('aes256', key, iv);
+        c.setAutoPadding(pad);
+        return c.update(val, 'utf8') + c.final('binary');
+  }
+
+  function decrypt(val, pad) {
+        var c = crypto.createDecipheriv('aes256', key, iv);
+        c.setAutoPadding(pad);
+        return c.update(val, 'binary') + c[decipherFinal]('utf8');
+  }
+
+  // echo 0123456789abcdef0123456789abcdef \
+  // | openssl enc -e -aes256 -nopad -K <key> -iv <iv> \
+  // | openssl enc -d -aes256 -nopad -K <key> -iv <iv>
+  var plaintext = '0123456789abcdef0123456789abcdef'; // multiple of block size
+  var encrypted = encrypt(plaintext, false);
+  var decrypted = decrypt(encrypted, false);
+  assert.equal(decrypted, plaintext);
+
+  // echo 0123456789abcdef0123456789abcde \
+  // | openssl enc -e -aes256 -K <key> -iv <iv> \
+  // | openssl enc -d -aes256 -K <key> -iv <iv>
+  plaintext = '0123456789abcdef0123456789abcde'; // not a multiple
+  encrypted = encrypt(plaintext, true);
+  decrypted = decrypt(encrypted, true);
+  assert.equal(decrypted, plaintext);
+}
+
+aes256('final');
+aes256('finaltol');