Crypto: Adding tests for new padding control.

nodejs · Jan 18, 2012 · b617ec8 · b617ec8
1 parent 2cafc70
commit b617ec8
Showing 1 changed file with 119 additions and 0 deletions.
diff --git a/test/simple/test-crypto-padding.js b/test/simple/test-crypto-padding.js
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+// 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();
+}
+
+
+/*
+ * Input data
+ */
+
+var ODD_LENGTH_PLAIN = 'Hello node world!',
+    EVEN_LENGTH_PLAIN = 'Hello node world!AbC09876dDeFgHi';
+
+var KEY_PLAIN = 'S3c.r.e.t.K.e.Y!',
+    IV_PLAIN = 'blahFizz2011Buzz';
+
+var CIPHER_NAME = 'aes-128-cbc';
+
+
+/*
+ * Expected result data
+ */
+
+// echo -n 'Hello node world!' | openssl enc -aes-128-cbc -e -K 5333632e722e652e742e4b2e652e5921 -iv 626c616846697a7a3230313142757a7a | xxd -p -c256
+var ODD_LENGTH_ENCRYPTED = '7f57859550d4d2fdb9806da2a750461a9fe77253cd1cbd4b07beee4e070d561f';
+
+// echo -n 'Hello node world!AbC09876dDeFgHi' | openssl enc -aes-128-cbc -e -K 5333632e722e652e742e4b2e652e5921 -iv 626c616846697a7a3230313142757a7a | xxd -p -c256
+var EVEN_LENGTH_ENCRYPTED = '7f57859550d4d2fdb9806da2a750461ab46e71b3d78ebe2d9684dfc87f7575b9886119866912cb8c7bcaf76c5ebc2378';
+
+// echo -n 'Hello node world!AbC09876dDeFgHi' | openssl enc -aes-128-cbc -e -K 5333632e722e652e742e4b2e652e5921 -iv 626c616846697a7a3230313142757a7a -nopad | xxd -p -c256
+var EVEN_LENGTH_ENCRYPTED_NOPAD = '7f57859550d4d2fdb9806da2a750461ab46e71b3d78ebe2d9684dfc87f7575b9';
+
+
+/*
+ * Helper wrappers
+ */
+
+function enc(plain, pad) {
+  var encrypt = crypto.createCipheriv(CIPHER_NAME, KEY_PLAIN, IV_PLAIN);
+  encrypt.setAutoPadding(pad);
+  var hex = encrypt.update(plain, 'ascii', 'hex');
+  hex += encrypt.final('hex');
+  return hex;
+}
+
+function dec(encd, pad) {
+  var decrypt = crypto.createDecipheriv(CIPHER_NAME, KEY_PLAIN, IV_PLAIN);
+  decrypt.setAutoPadding(pad);
+  var plain = decrypt.update(encd, 'hex');
+  plain += decrypt.final('binary');
+  return plain;
+}
+
+
+/*
+ * Test encryption
+ */
+
+assert.equal(enc(ODD_LENGTH_PLAIN, true), ODD_LENGTH_ENCRYPTED);
+assert.equal(enc(EVEN_LENGTH_PLAIN, true), EVEN_LENGTH_ENCRYPTED);
+
+assert.throws(function() {
+  // input must have block length %
+  enc(ODD_LENGTH_PLAIN, false);
+});
+
+assert.doesNotThrow(function() {
+  assert.equal(enc(EVEN_LENGTH_PLAIN, false), EVEN_LENGTH_ENCRYPTED_NOPAD);
+});
+
+
+/*
+ * Test decryption
+ */
+
+assert.equal(dec(ODD_LENGTH_ENCRYPTED, true), ODD_LENGTH_PLAIN);
+assert.equal(dec(EVEN_LENGTH_ENCRYPTED, true), EVEN_LENGTH_PLAIN);
+
+assert.doesNotThrow(function() {
+  // returns including original padding
+  assert.equal(dec(ODD_LENGTH_ENCRYPTED, false).length, 32);
+  assert.equal(dec(EVEN_LENGTH_ENCRYPTED, false).length, 48);
+});
+
+assert.throws(function() {
+  // must have at least 1 byte of padding (PKCS):
+  assert.equal(dec(EVEN_LENGTH_ENCRYPTED_NOPAD, true), EVEN_LENGTH_PLAIN);
+});
+
+assert.doesNotThrow(function() {
+  // no-pad encrypted string should return the same:
+  assert.equal(dec(EVEN_LENGTH_ENCRYPTED_NOPAD, false), EVEN_LENGTH_PLAIN);
+});