xml-encryption

What is xml-encryption?

The xml-encryption npm package provides tools for encrypting and decrypting XML data. It supports various encryption algorithms and allows for the secure handling of XML documents.

What are xml-encryption's main functionalities?

Encrypting XML Data

This feature allows you to encrypt XML data using a specified encryption algorithm and keys. The code sample demonstrates how to encrypt an XML string using RSA and AES256-CBC.

const xmlenc = require('xml-encryption');
const xml = '<root><name>John Doe</name></root>';
const options = { rsa_pub: 'public_key.pem', pem: 'private_key.pem', encryptionAlgorithm: 'http://www.w3.org/2001/04/xmlenc#aes256-cbc' };
xmlenc.encrypt(xml, options, function(err, result) {
  if (err) console.error(err);
  console.log('Encrypted XML:', result);
});

Decrypting XML Data

This feature allows you to decrypt previously encrypted XML data using the appropriate private key. The code sample demonstrates how to decrypt an encrypted XML string.

const xmlenc = require('xml-encryption');
const encryptedXml = '...'; // Encrypted XML string
const options = { key: 'private_key.pem' };
xmlenc.decrypt(encryptedXml, options, function(err, result) {
  if (err) console.error(err);
  console.log('Decrypted XML:', result);
});

Other packages similar to xml-encryption

xml2js

The xml2js package is used for parsing XML to JavaScript objects and vice versa. While it does not provide encryption functionalities, it is useful for handling XML data in JavaScript applications.

xml-crypto

The xml-crypto package provides tools for XML digital signatures and encryption. It offers similar functionalities to xml-encryption but also includes support for XML signatures, making it a more comprehensive solution for XML security.

node-forge

The node-forge package is a comprehensive library for cryptographic operations in JavaScript, including encryption, decryption, and key generation. While it is not specific to XML, it can be used to implement custom XML encryption and decryption solutions.

README

W3C XML Encryption implementation for node.js (http://www.w3.org/TR/xmlenc-core/)

Usage

npm install xml-encryption

encrypt

var xmlenc = require('xmlenc');

var options = {
  rsa_pub: fs.readFileSync(__dirname + '/your_rsa.pub'),
  pem: fs.readFileSync(__dirname + '/your_public_cert.pem'),
  encryptionAlgorithm: 'http://www.w3.org/2001/04/xmlenc#aes-256-cbc',
  keyEncryptionAlgorighm: 'http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p'
};

xmlenc.encrypt('content to encrypt', options, function(err, result) { 
    console.log(result);
}

Result:

<xenc:EncryptedData Type="http://www.w3.org/2001/04/xmlenc#Element" xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">
  <xenc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#aes-256-cbc" />
    <KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
      <e:EncryptedKey xmlns:e="http://www.w3.org/2001/04/xmlenc#">
        <e:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p">
          <DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
        </e:EncryptionMethod>
        <KeyInfo>
          <X509Data><X509Certificate>MIIEDzCCAveg... base64 cert... q3uaLvlAUo=</X509Certificate></X509Data>
        </KeyInfo>
        <e:CipherData>
          <e:CipherValue>sGH0hhzkjmLWYYY0gyQMampDM... encrypted symmetric key ...gewHMbtZafk1MHh9A==</e:CipherValue>
        </e:CipherData>
      </e:EncryptedKey>
    </KeyInfo>
    <xenc:CipherData>
        <xenc:CipherValue>V3Vb1vDl055Lp92zvK..... encrypted content.... kNzP6xTu7/L9EMAeU</xenc:CipherValue>
    </xenc:CipherData>
</xenc:EncryptedData>

decrypt

var options = {
    key: fs.readFileSync(__dirname + '/your_private_key.key'),
};

xmlenc.decrypt('<xenc:EncryptedData ..... </xenc:EncryptedData>', options, function(err, result) { 
    console.log(result);
}

// result

decrypted content

Supported algorithms

Currently the library supports:

• EncryptedKey to transport symmetric key using http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p
• EncryptedData using http://www.w3.org/2001/04/xmlenc#aes-256-cbc

However, you can fork and implement your own algorithm. The code supports adding more algorithms easily