denet-node-server/test/sample.js

var CryptoJS = require("crypto-js");

function decryptPrivityKey(message) {

    // var encrypted = 'Zc4v3uJgPY+BVg/IrDLA4aIk9ko/UrgjAtBTLqymdMAvmqdp1GttRjkBgNNNTyxA+3ThbIGlM0INeeHGicYVbLea4ymkty8gd30rZXQ4yYQ='; //python is base64 ECB
    // var key = '0IPmaec1o9FQCqGN'//key used in Python
    // var iv = 'Zh4A7bOY2ksp9oIn'
    var encrypted = message; //python is base64 ECB
    var key = process.env.DENET_CRYPT_KEY 
    var iv = process.env.DENET_CRYPT_IV
    if (!key || !iv) {
        console.error('decryptPrivityKey key or iv is empty?');
        return null;
    }
    console.log('encrypted=', encrypted);
    console.log('decryptPrivityKey key= iv=', key, iv);

    key = CryptoJS.enc.Utf8.parse(key);
    iv = CryptoJS.enc.Utf8.parse(iv)
    var decrypted = CryptoJS.AES.decrypt(encrypted
        , key
        , { iv: iv, mode: CryptoJS.mode.CBC}
        );
    console.log('decrypted decrypt ==', decrypted);
    var de_pk = decrypted.toString(CryptoJS.enc.Utf8);
    console.log('decrypted==', de_pk);
    return de_pk
}

// decryptPrivityKey('bnUvrSKmU3l7zONP+hIH1BOMhNVfIBUgEziWb2tGiUgn63FZVdzXC9E1DT+Mx3B+nqrzUAqd60I/8rLobYYl+0TSR3Ri1o0iX/hcxqs/0yg=')