From 3c7dd2822b2a745725f8c2d70b07167d006498d6 Mon Sep 17 00:00:00 2001
From: Taylor Otwell <taylorotwell@gmail.com>
Date: Wed, 6 Jul 2011 14:08:50 -0700
Subject: [PATCH] Trimming comment bloat in Crypt class.

---
 system/crypt.php | 22 +++-------------------
 1 file changed, 3 insertions(+), 19 deletions(-)

diff --git a/system/crypt.php b/system/crypt.php
index fc338de9..4174251b 100644
--- a/system/crypt.php
+++ b/system/crypt.php
@@ -24,10 +24,6 @@ class Crypt {
 	 */
 	public static function encrypt($value)
 	{
-		// -----------------------------------------------------
-		// Determine the input vector source. Different servers
-		// and operating systems will have varying options.
-		// -----------------------------------------------------
 		if (defined('MCRYPT_DEV_URANDOM'))
 		{
 			$random = MCRYPT_DEV_URANDOM;
@@ -41,21 +37,17 @@ public static function encrypt($value)
 			$random = MCRYPT_RAND;
 		}
 
-		// -----------------------------------------------------
-		// The system random number generator must be seeded
-		// to produce adequately random results.
-		// -----------------------------------------------------
+		// The system random number generator must be seeded to produce random results.
 		if ($random === MCRYPT_RAND)
 		{
 			mt_srand();
 		}
 
 		$iv = mcrypt_create_iv(static::iv_size(), $random);
+
 		$value = mcrypt_encrypt(static::$cipher, static::key(), $value, static::$mode, $iv);
 
-		// -----------------------------------------------------
-		// We use base64 encoding to get a nice string value.
-		// -----------------------------------------------------
+		// Use base64 encoding to get a nice string value.
 		return base64_encode($iv.$value);
 	}
 
@@ -67,10 +59,6 @@ public static function encrypt($value)
 	 */
 	public static function decrypt($value)
 	{
-		// -----------------------------------------------------
-		// Since all of our encrypted values are base64 encoded,
-		// we will decode the value here and verify it.
-		// -----------------------------------------------------
 		$value = base64_decode($value, true);
 
 		if ( ! $value)
@@ -78,14 +66,10 @@ public static function decrypt($value)
 			throw new \Exception('Decryption error. Input value is not valid base64 data.');
 		}
 
-		// -----------------------------------------------------
 		// Extract the input vector from the value.
-		// -----------------------------------------------------
 		$iv = substr($value, 0, static::iv_size());
 
-		// -----------------------------------------------------
 		// Remove the input vector from the encrypted value.
-		// -----------------------------------------------------
 		$value = substr($value, static::iv_size());
 
 		return rtrim(mcrypt_decrypt(static::$cipher, static::key(), $value, static::$mode, $iv), "\0");