node新手一個(gè)關(guān)于aes128加密的問(wèn)題

下面這段代碼在node中要怎么寫(xiě)呢?

$cipher = base64_encode(openssl_encrypt(json_encode($param), 'aes-128-cbc', hash('MD5', $aesKey, true), OPENSSL_RAW_DATA, $iv));

我的代碼是這樣的，但是發(fā)現(xiàn)結(jié)果并不一樣。。。。

const hash = crypto.createHash( 'MD5' )
hash.update( aesKey )
const aesKeySignStr = hash.digest()
const iv = Math.random().toString( 36 ).substr( 2 )

const cipher = crypto.createCipher( 'aes-128-cbc', aesKeySignStr, iv )
console.log( JSON.stringify( this.params ) );
let crypted = cipher.update( JSON.stringify( this.params ), 'utf8', 'hex' )
crypted += cipher.final( 'hex' )

請(qǐng)各位大佬搭救。