--TEST-- Test mcrypt_encrypt() function : TripleDES functionality --SKIPIF-- <?php if (!extension_loaded("mcrypt")) { print "skip - mcrypt extension not loaded"; } ?> --FILE-- <?php /* Prototype : string mcrypt_encrypt(string cipher, string key, string data, string mode, string iv) * Description: OFB crypt/decrypt data using key key with cipher cipher starting with iv * Source code: ext/mcrypt/mcrypt.c * Alias to functions: */ /* Prototype : string mcrypt_decrypt(string cipher, string key, string data, string mode, string iv) * Description: OFB crypt/decrypt data using key key with cipher cipher starting with iv * Source code: ext/mcrypt/mcrypt.c * Alias to functions: */ /* Prototype : string mcrypt_cbc(int cipher, string key, string data, int mode, string iv) * Description: CBC crypt/decrypt data using key key with cipher cipher starting with iv * Source code: ext/mcrypt/mcrypt.c * Alias to functions: */ /* Prototype : string mcrypt_ecb(int cipher, string key, string data, int mode, string iv) * Description: ECB crypt/decrypt data using key key with cipher cipher starting with iv * Source code: ext/mcrypt/mcrypt.c * Alias to functions: */ echo "*** Testing mcrypt : Rijndael128 functionality ***\n"; $cipher = MCRYPT_RIJNDAEL_128; $mode = MCRYPT_MODE_CBC; $data = b'This is the secret message which must be encrypted'; // keys : 20 bytes, 24 bytes, 30 Bytes, 32 Bytes, 40 Bytes $keys = array( b'12345678901234567890', b'123456789012345678901234', b'123456789012345678901234567890', b'12345678901234567890123456789012', b'1234567890123456789012345678901234567890' ); // rijndael128 is a block cipher of 128 bits (16 bytes) $iv = b'1234567890123456'; echo "\n--- testing different key lengths\n"; foreach ($keys as $key) { echo "\nkey length=".strlen($key)."\n"; $res = mcrypt_encrypt($cipher, $key, $data, MCRYPT_MODE_CBC, $iv); var_dump(bin2hex($res)); $res = mcrypt_decrypt($cipher, $key, $res, MCRYPT_MODE_CBC, $iv); var_dump(bin2hex($res)); } ?> ===DONE=== --EXPECTF-- *** Testing mcrypt : Rijndael128 functionality *** --- testing different key lengths key length=20 string(128) "6369830bfc89a39c9981c9a40e349e3bbc8599c28d7ffbd7a330a67690dac6dfb76a55814e95c83cced68eb1544cdd8406d272c249bd0a60fa5b605d4aefbaa0" string(128) "546869732069732074686520736563726574206d657373616765207768696368206d75737420626520656e637279707465640000000000000000000000000000" key length=24 string(128) "8ecdf1ed5742aff16ef34c819c8d22c707c54f4d9ffc18e5f6ab79fe68c25705351e2c001a0b9f29e5def67570ca9da644efb69a8bb97940cb4bec094dae8bb5" string(128) "546869732069732074686520736563726574206d657373616765207768696368206d75737420626520656e637279707465640000000000000000000000000000" key length=30 string(128) "f7731f0c0ab22270b2f516c7837256ed731ba6658ca8f78cda2ab1588e204f990843719ae88474f6572711674fcda9f40d99155e4cc4f5a31aa461ad36a7871d" string(128) "546869732069732074686520736563726574206d657373616765207768696368206d75737420626520656e637279707465640000000000000000000000000000" key length=32 string(128) "f23bc103bfd0859a8318acee6d96e5f43dff68f3cdeae817a1e77c33492e32bdb82c5f660fcd1a2bfda70d9de4d5d8028ce179a9e2f7f9ee7dd61c7b4b409e95" string(128) "546869732069732074686520736563726574206d657373616765207768696368206d75737420626520656e637279707465640000000000000000000000000000" key length=40 Warning: mcrypt_encrypt(): Size of key is too large for this algorithm in %s on line %d string(128) "f23bc103bfd0859a8318acee6d96e5f43dff68f3cdeae817a1e77c33492e32bdb82c5f660fcd1a2bfda70d9de4d5d8028ce179a9e2f7f9ee7dd61c7b4b409e95" Warning: mcrypt_decrypt(): Size of key is too large for this algorithm in %s on line %d string(128) "546869732069732074686520736563726574206d657373616765207768696368206d75737420626520656e637279707465640000000000000000000000000000" ===DONE===