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1function encrypt_decrypt($action, $string) {
2    $output = false;
3
4    $encrypt_method = "AES-256-CBC";
5$secret_key = 'This is my secret key';
6    $secret_iv = 'This is my secret iv';
7
8    // hash
9    $key = hash('sha256', $secret_key);
10
11    // iv - encrypt method AES-256-CBC expects 16 bytes - else you will get a warning
12        $iv = substr(hash('sha256', $secret_iv), 0, 16);
13
14    if ( $action == 'encrypt' ) {
15    $output = openssl_encrypt($string, $encrypt_method, $key, 0, $iv);
16    $output = base64_encode($output);
17} else if( $action == 'decrypt' ) {
18        $output = openssl_decrypt(base64_decode($string), $encrypt_method, $key, 0, $iv);
19    }
20
21    return $output;
22}
23	
24var crypto = require('crypto')
25            , key = 'This is my secret key'
26            , iv = 'This is my secret iv'
27            , plaintext = '2';
28
29            hashedKey = crypto.createHash('sha256').update(key, 'utf-8').digest('hex');
30            console.log('hashed key=', hashedKey);
31            // corresponds to the hashed key in PHP
32
33            hashedIv = crypto.createHash('sha256').update(iv, 'utf-8').digest('hex').substring(0,16);
34            console.log('hashed iv=', hashedIv);
35            // corresponds to the hashed iv in PHP
36
37            var buf = Buffer.from(teamId, 'base64');
38            console.log("buffer: " + buf);
39	
40var decryptor = crypto.createDecipheriv("aes-256-cbc", hashedKey, hashedIv);
41    console.log("the shit: " + decryptor.update(buf, 'base64', 'utf8') + decryptor.final('utf8'));