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61 lines
2.4 KiB
61 lines
2.4 KiB
11 years ago
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<?php
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/*
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* This is an example of how to use PHP_Crypt::createKey() to generate a random
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* key. PHP_Crypt::createKey() is a helper function to generate a random key.
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* You do not have to use createKey(), it was added to phpCrypt as a convenience,
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* you may create your own key as shown in other examples.
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*
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* There are 4 constants used with PHP_Crypt::createKey()
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*
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* PHP_Crypt::RAND - uses PHP's mt_rand() to generate an IV.
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* This is the default setting when no IV method is specified.
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*
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* PHP_Crypt::RAND_DEV_RAND - uses the Unix /dev/random random number generator.
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* More secure than PHP_Crypt::IV_RAND. Not available in Windows.
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*
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* PHP_Crypt::RAND_DEV_URAND - uses the Unix /dev/urandom random number generator.
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* More secure than PHP_Crypt::IV_RAND. Not Available for Windows.
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*
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* PHP_Crypt::RAND_WIN_COM - uses the PHP com_dotnet extension and is available only
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* on Windows. Requires the Microsoft CAPICOM SDK to be installed. View the README
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* file included with phpCrypt for more information
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*/
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error_reporting (E_ALL | E_STRICT);
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include(dirname(__FILE__)."/../phpCrypt.php");
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use PHP_Crypt\PHP_Crypt as PHP_Crypt;
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/*
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* The example below uses Linux/Unix /dev/urandom to create a random
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* string of bytes. Because AES-128 uses a 128 bit (16 byte) key, we
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* request 16 bytes in the second parameter. Please read above for the
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* different constants used to create a key.
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*
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* WE CAN USE THE FOLLOWING METHODS OF CREATING AN KEY:
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* $key = PHP_Crypt::createKey(PHP_Crypt::RAND); // The default, uses PHP's mt_rand()
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* $key = PHP_Crypt::createKey(PHP_Crypt::RAND_DEV_RAND); // unix only, uses /dev/random
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* $key = PHP_Crypt::createKey(PHP_Crypt::RAND_DEV_URAND);// unix only, uses /dev/urandom
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* $key = PHP_Crypt::createKey(PHP_Crypt::RAND_WIN_COM); // Windows only, uses the com_dotnet extension
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*/
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$key = PHP_Crypt::createKey(PHP_Crypt::RAND_DEV_URAND, 16);
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$text = "This is my secret message.";
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// now create the phpCrypt object and set the cipher to AES-128, with CTR mode
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$crypt = new PHP_Crypt($key, PHP_Crypt::CIPHER_AES_128, PHP_Crypt::MODE_CTR);
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$iv = $crypt->createIV();
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$encrypt = $crypt->encrypt($text);
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$crypt->IV($iv);
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$decrypt = $crypt->decrypt($encrypt);
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print "CIPHER: ".$crypt->cipherName()."\n";
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print "MODE: ".$crypt->modeName()."\n";
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print "PLAIN TEXT: $text\n";
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print "PLAIN TEXT HEX: ".bin2hex($text)."\n";
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print "ENCRYPTED HEX: ".bin2hex($encrypt)."\n";
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print "DECRYPTED: $decrypt\n";
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print "DECRYPTED HEX: ".bin2hex($decrypt)."\n";
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?>
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