php 7.1 openssl_decrypt() 代替 mcrypt_module_open() 方法

公司开发微信第三方平台,之前用着一直是没有问题的。后来服务器到期进行项目搬迁就怎么也接收不到微信每10分钟的ticketle。

经过调试发现php版本由原来的7.0升到了7.1（该死....为什么没人告诉我）。mcrypt_module_open()函数在7.1中被贬低，将在7.2中被移除，要用openssl_decrypt()函数代替。废话不多说了。直接给代码

明文加密：

原代码

$random = $this->getRandomStr();
$text = $random . pack("N", strlen($text)) . $text . $appid;
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
$module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
$iv = substr($this->key, 0, 16);
$pkc_encoder = new PKCS7Encoder;
$text = $pkc_encoder->encode($text);
mcrypt_generic_init($module, $this->key, $iv);
$encrypted = mcrypt_generic($module, $text);
mcrypt_generic_deinit($module);
mcrypt_module_close($module)

修改为

$random = $this->getRandomStr();
$text = $random . pack("N", strlen($text)) . $text . $appid;
$iv = substr($this->key, 0, 16);
$pkc_encoder = new PKCS7Encoder;
$text = $pkc_encoder->encode($text);
$encrypted = openssl_encrypt($text, 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING, $iv);

明文解密

原代码

$ciphertext_dec = base64_decode($encrypted);
$module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
$iv = substr($this->key, 0, 16);
mcrypt_generic_init($module, $this->key, $iv);
$decrypted = mdecrypt_generic($module, $ciphertext_dec);
mcrypt_generic_deinit($module);
mcrypt_module_close($module);

修改为

$ciphertext_dec = base64_decode($encrypted);
$iv = substr($this->key, 0, 16);
$decrypted = openssl_decrypt($ciphertext_dec, 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING, $iv);

特此记录一下！完毕。

原文：https://blog.csdn.net/haibo_j/article/details/80759706