使用PHP加密和使用MySQL aes_decrypt解密？

Question

是否可以使用PHP加密数据mcrypt并使用MySQL在数据库中解密AES_DECRYPT？目前,我使用RIJNDAEL_128了mcryptPHP的.我还确保数据库中的加密字段具有数据类型blob.然而,AES_DECRYPT正确的钥匙仍然返回NULL.有关如何使其工作的任何建议？

Answer 1

我在这里找到了一些很好的帮助

请注意,这适用于纯文本中最多65519个字符的加密文本.(如果没有UTF-8编码,可能会多一点)

要加密的PHP代码:

// MySQL uses 16 bytes key for 128 encryption/decryption
$key = "ABCDEF0123456789";

$plaintext = "This string was AES-128 / EBC / ZeroBytePadding encrypted.";
// Optionally UTF-8 encode
$plaintext_utf8 = utf8_encode($plaintext);
// Find out what's your padding
$pad_len = 16 - (strlen($plaintext_utf8) % 16);
// Padd your text
$plaintext_utf8 = str_pad($plaintext_utf8, (16 * (floor(strlen($plaintext_utf8) / 16) + 1)), chr($pad_len));

// Encryption
mt_srand();
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
mcrypt_generic_init($td, $key, false);
// Generates a warning about empty IV but it's Ok
$ciphertext = mcrypt_generic($td, $plaintext_utf8);
mcrypt_generic_deinit($td);
$ciphertext = mysql_real_escape_string($ciphertext);

// Store in MySQL
$mysqli = new mysqli("localhost", "test", "test", "test");
$mysqli->set_charset("utf8");
$mysqli->query("insert into test(content) value ('$ciphertext')");
$mysqli->close();

用于搜索的SQL查询string was:

SELECT CAST(AES_DECRYPT(content,'ABCDEF0123456789') AS CHAR) AS content
FROM test
WHERE CAST(AES_DECRYPT(content,'ABCDEF0123456789') AS CHAR) like '%string was%';

输出是:

This string was AES-128 / EBC / ZeroBytePadding encrypted.

注意:MySQL表是由以下人员创建的:

create table test (
id int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
content blob ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;