How does PHP implement AES-128 encryption algorithm through OpenSSL?

The following script is from the seven cattle provided by the

$ echo -n [AES128KEY] | openssl rsautl -encrypt -oaep -inkey [QINIU_PUB_KEY_FILE] -pubin | openssl base64 -A | tr "+/" "-_"

I know that PHP has to provide openssl modules, but I do not understand this module, I have no understanding of the friend, the above code is rewritten into PHP. Thank you so much.

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The following script is from the seven cattle provided by the

$ echo -n [AES128KEY] | openssl rsautl -encrypt -oaep -inkey [QINIU_PUB_KEY_FILE] -pubin | openssl base64 -A | tr "+/" "-_"

I know that PHP has to provide openssl modules, but I do not understand this module, I have no understanding of the friend, the above code is rewritten into PHP. Thank you so much.

class AES_128_CW {    private $_iv = '';    private $_secret = '';    public function __construct($iv,$secret){        $this->_iv = substr($iv.'0000000000000000', 0,16);//可以忽略这一步，只要你保证iv长度是16        $this->_secret = hash('md5',$secret,true);    }    public function decode($secretData){        return openssl_decrypt(urldecode($secretData),'aes-128-cbc',$this->_secret,false,$this->_iv);    }    public function encode($data){        return urlencode(openssl_encrypt($data,'aes-128-cbc',$this->_secret,false,$this->_iv));    }

}

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