xadesjs

v2.4.4

Published

2 years ago

A pure Typescript/Javascript implementation of XAdES based on XMLDSIGjs.

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xml xmldsig xades webcrypto signature rsa ec

XAdESjs

XAdES is short for "XML Advanced Electronic Signatures", it is a superset of XMLDSIG. This library aims to provide an implementation of XAdES in Typescript/Javascript that is built on XMLDSIGjs.

Since it is based on XMLDSIGjs and that library uses Web Crypto for cryptographic operations it can be used both in browsers and in Node.js (when used with a polyfill like webcrypto, node-webcrypto-ossl or node-webcrypto-p11).

There are seven different profiles of XAdES, they are:

Basic Electronic Signature (XAdES-BES)
XAdES with Timestamp (XAdES-T)
XAdES with Complete Validation Data (XAdES-C)
XAdES with Extended Validation Data (XAdES-X)
XAdES with Extended Long Term Validation Data (XAdES-X-L)
XAdES with Archiving Validation Data (XAdES-A)
XAdES with Explicit policy electronic signatures (XAdES-EPES)

They differ slightly based on what is included in the signature:

| | Provides Digital Signature | Includes Cryptographic Timestamp | Includes Revocation References | Includes Revocation Data | Allows Secure Timestamp Countersignature | |------------|----------------------------|----------------------------------|--------------------------------|--------------------------|------------------------------------------| | XAdES-BES | Yes | No | No | No | No | | XAdES-EPES | Yes | No | No | No | No | | XAdES-T | Yes | Yes | No | No | No | | XAdES-C | Yes | Yes | Yes | No | No | | XAdES-X | Yes | Yes | Yes | No | No | | XAdES-X-L | Yes | Yes | Yes | Yes | No | | XAdES-A | Yes | Yes | Yes | Yes | Yes |

Only XAdES-BES (in BOLD) is fully supported by XAdESjs. For the other variants can be created, decoded and verified but the caller must do the construction and policy to ensure compliant messages on their own.

INSTALLING

npm install xadesjs

The npm module has a dist folder with the following files:

| Name | Size | Description | |-----------------|--------|------------------------------------------------| | index.js | 105 Kb | UMD module with external modules. Has comments | | xades.js | 803 Kb | UMD bundle module. Has comments | | xades.min.js | 296 Kb | minified UMD bundle module |

There is also a lib folder with an ES2015 JS file which you can use with rollup bundler.

COMPATABILITY

CRYPTOGRAPHIC ALGORITHM SUPPORT

| Name | SHA1 | SHA2-256 | SHA2-384 | SHA2-512 | |-------------------|------|----------|----------|----------| | RSASSA-PKCS1-v1_5 | X | X | X | X | | RSA-PSS | X | X | X | X | | ECDSA | X | X | X | X | | HMAC | X | X | X | X |

CANONICALIZATION ALGORITHM SUPPORT

XmlDsigC14NTransform
XmlDsigC14NWithCommentsTransform
XmlDsigExcC14NTransform
XmlDsigExcC14NWithCommentsTransform
XmlDsigEnvelopedSignatureTransform
XmlDsigBase64Transform

PLATFORM SUPPORT

XAdESjs works with any browser that suppports Web Crypto. Since node does not have Web Crypto you will need a polyfill on this platform, for this reason the npm package includes webcrypto; browsers do not need this dependency and in those cases though it will be installed it will be ignored.

If you need to use a Hardware Security Module we have also created a polyfill for Web Crypto that supports PKCS #11. Our polyfill for this is node-webcrypto-p11.

To use node-webcrypto-ossl you need to specify you want to use it, that looks like this:

var xadesjs = require("./built/xades.js");
var { Crypto } = require("@peculiar/webcrypto");

xadesjs.Application.setEngine("NodeJS", new Crypto());

The node-webcrypto-p11 polyfill will work the same way. The only difference is that you have to specify the details about your PKCS #11 device when you instansiate it:

var xadesjs = require("./built/xades.js");
var WebCrypto = require("node-webcrypto-p11").WebCrypto;

xadesjs.Application.setEngine("PKCS11", new WebCrypto({
    library: "/path/to/pkcs11.so",
	name: "Name of PKCS11 lib",
	slot: 0,
    sessionFlags: 2 | 4, // RW_SESSION | SERIAL_SESSION
	pin: "token pin"
}));

WARNING

Using XMLDSIG is a bit like running with scissors, that said it is needed for interoperability with a number of systems, for this reason, we have done this implementation.

Usage

Sign

SignedXml.Sign(algorithm: Algorithm, key: CryptoKey, data: Document, options?: OptionsXAdES): PromiseLike<Signature>;

Parameters

| Name | Description | |:--------------|:------------------------------------------------------------------------| | algorithm | Signing Algorithm | | key | Signing Key | | data | XML document which must be signed | | options | Additional options |

Options

interface OptionsXAdES {
    /**
     * Public key for KeyInfo block
     */
    keyValue?: CryptoKey;
    /**
     * List of X509 Certificates
     */
    x509?: string[];
    /**
     * List of Reference
     * Default is Reference with hash alg SHA-256 and exc-c14n transform  
     */
    references?: OptionsSignReference[];

    // Signed signature properties

    signingCertificate?: string;
    signingTime?: OptionsSigningTime;
    policy?: OptionsPolicyId;
    productionPlace?: OptionsProductionPlace;
    signerRole?: OptionsSignerRole;
}

interface OptionsSignReference {
    /**
     * Id of Reference
     */
    id?: string;
    uri?: string;
    /**
     * Hash algorithm
     */
    hash: AlgorithmIdentifier;
    /**
     * List of transforms
     */
    transforms?: OptionsSignTransform[];
}

type OptionsSignTransform = "enveloped" | "c14n" | "exc-c14n" | "c14n-com" | "exc-c14n-com" | "base64";

interface OptionsSigningTime {
    value?: Date;
    format?: string;
}

interface OptionsSignerRole {
    claimed?: string[];
    certified?: string[];
}

interface OptionsProductionPlace {
    city?: string;
    state?: string;
    code?: string;
    country?: string;
}

interface OptionsPolicyId {
}

Verify

Verify(key?: CryptoKey): PromiseLike<boolean>;

Parameters

| Name | Description | |:--------------|:------------------------------------------------------------------------| | key | Verifying Key. Optional. If key not set it looks for keys in KeyInfo element of Signature. |

EXAMPLES

Create XAdES-BES Signature

In Node

var xadesjs = require("xadesjs");
var { Crypto } = require("@peculiar/webcrypto");

xadesjs.Application.setEngine("NodeJS", new Crypto());

// Generate RSA key pair
var privateKey, publicKey;
xadesjs.Application.crypto.subtle.generateKey(
    {
        name: "RSASSA-PKCS1-v1_5",
        modulusLength: 1024, //can be 1024, 2048, or 4096,
        publicExponent: new Uint8Array([1, 0, 1]),
        hash: { name: "SHA-1" }, //can be "SHA-1", "SHA-256", "SHA-384", or "SHA-512"
    },
    false, //whether the key is extractable (i.e. can be used in exportKey)
    ["sign", "verify"] //can be any combination of "sign" and "verify"
)
    .then(function (keyPair) {
        // Push ganerated keys to global variable
        privateKey = keyPair.privateKey;
        publicKey = keyPair.publicKey;

        // Call sign function
        var xmlString = '<player bats="left" id="10012" throws="right">\n\t<!-- Here\'s a comment -->\n\t<name>Alfonso Soriano</name>\n\t<position>2B</position>\n\t<team>New York Yankees</team>\n</player>';
        return SignXml(xmlString, keyPair, { name: "RSASSA-PKCS1-v1_5", hash: { name: "SHA-1" } });
    })
    .then(function (signedDocument) {
        console.log("Signed document:\n\n", signedDocument);
    })
    .catch(function (e) {
        console.error(e);
    });


function SignXml(xmlString, keys, algorithm) {
    return Promise.resolve()
        .then(() => {
            var xmlDoc = xadesjs.Parse(xmlString);
            var signedXml = new xadesjs.SignedXml();

            return signedXml.Sign(               // Signing document
                algorithm,                              // algorithm
                keys.privateKey,                        // key
                xmlDoc,                                 // document
                {                                       // options
                    keyValue: keys.publicKey,
                    references: [
                        { hash: "SHA-256", transforms: ["enveloped"] }
                    ],
                    productionPlace: {
                        country: "Country",
                        state: "State",
                        city: "City",
                        code: "Code",
                    },
                    signingCertificate: "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"
                })
            })
            .then(signature => signature.toString());
}

In the browser

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <title>XADESJS Signature Sample</title>
</head>

<body>
    <pre id="signature"><code></code></pre>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/7.7.0/polyfill.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/asmCrypto/2.3.2/asmcrypto.all.es5.min.js"></script>
    <script src="https://cdn.rawgit.com/indutny/elliptic/master/dist/elliptic.min.js"></script>
    <script src="https://unpkg.com/[email protected]/build/webcrypto-liner.shim.min.js"></script>
    <script src="https://unpkg.com/[email protected]/build/xades.js"></script>
    <script type="text/javascript">
        // Generate RSA key pair
        var privateKey, publicKey;
        window.crypto.subtle.generateKey(
            {
                name: "ECDSA",
                namedCurve: "P-256"
            },
            false, //whether the key is extractable (i.e. can be used in exportKey)
            ["sign", "verify"] //can be any combination of "sign" and "verify"
        )
            .then(function (keyPair) {
                // Push ganerated keys to global variable
                privateKey = keyPair.privateKey;
                publicKey = keyPair.publicKey;
                // Call sign function
                var xmlString = '<player bats="left" id="10012" throws="right">\n\t<!-- Here\'s a comment -->\n\t<name>Alfonso Soriano</name>\n\t<position>2B</position>\n\t<team>New York Yankees</team>\n</player>';
                return SignXml(xmlString, keyPair, { name: "ECDSA", hash: { name: "SHA-1" } });
            })
            .then(function (signedDocument) {
                document.getElementById("signature").textContent = signedDocument;
                console.log("Signed document:\n\n", signedDocument);
            })
            .catch(function (e) {
                console.error(e);
            });

        function SignXml(xmlString, keys, algorithm) {
            var signedXml;
            return Promise.resolve()
                .then(() => {
                    var xmlDoc = XAdES.Parse(xmlString);
                    signedXml = new XAdES.SignedXml();

                    return signedXml.Sign(               // Signing document
                        algorithm,                              // algorithm
                        keys.privateKey,                        // key
                        xmlDoc,                                 // document
                        {                                       // options
                            keyValue: keys.publicKey,
                            references: [
                                { hash: "SHA-256", transforms: ["enveloped"] }
                            ],
                            productionPlace: {
                                country: "Country",
                                state: "State",
                                city: "City",
                                code: "Code",
                            },
                            signerRole: {
                                claimed: ["Some role"]
                            }
                        })
                })
                .then(() => signedXml.toString());
        }
    </script>
</body>

</html>

Check XAdES-BES Signature

In Node

var XAdES = require("xadesjs");
var { Crypto } = require("@peculiar/webcrypto");

XAdES.Application.setEngine("NodeJS", new Crypto());

var fs = require("fs");
var xmlString = fs.readFileSync("some.xml","utf8");

var signedDocument = XAdES.Parse(xmlString, "application/xml");
var xmlSignature = signedDocument.getElementsByTagNameNS("http://www.w3.org/2000/09/xmldsig#", "Signature");

var signedXml = new xadesjs.SignedXml(signedDocument);
signedXml.LoadXml(xmlSignature[0]);
signedXml.Verify()
    .then(res => {
        console.log((res ? "Valid" : "Invalid") + " signature");
    })
    .catch(function (e) {
        console.error(e);
    });

In the browser

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <title>XADESJS Signature Sample</title>
</head>

<body>
    <pre id="signature"><code></code></pre>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/7.7.0/polyfill.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/asmCrypto/2.3.2/asmcrypto.all.es5.min.js"></script>
    <script src="https://cdn.rawgit.com/indutny/elliptic/master/dist/elliptic.min.js"></script>
    <script src="https://unpkg.com/[email protected]/build/webcrypto-liner.shim.min.js"></script>
    <script src="https://unpkg.com/[email protected]/build/xades.js"></script>
    <script type="text/javascript">
        "use strict";
        fetch("https://cdn.rawgit.com/PeculiarVentures/xadesjs/master/test/static/valid_signature.xml")
            .then(response => response.text())
            .then(body => {
                var xmlString = body;

                var signedDocument = XAdES.Parse(xmlString);
                var xmlSignature = signedDocument.getElementsByTagNameNS("http://www.w3.org/2000/09/xmldsig#", "Signature");

                var signedXml = new xadesjs.SignedXml(signedDocument);
                signedXml.LoadXml(xmlSignature[0]);
                signedXml.Verify()
                    .then(function (signedDocument) {
                        alert((res ? "Valid" : "Invalid") + " signature");
                    })
                    .catch(function (e) {
                        alert(e.message);
                    });
            })
    </script>
</body>

</html>

XAdES-EPES signature

const fs = require("fs");
var { Crypto } = require("@peculiar/webcrypto");
const xadesjs = require("xadesjs");
const { XMLSerializer } = require("xmldom");


const crypto = new Crypto();
xadesjs.Application.setEngine("NodeJS", );

function preparePem(pem) {
    return pem
        // remove BEGIN/END
        .replace(/-----(BEGIN|END)[\w\d\s]+-----/g, "")
        // remove \r, \n
        .replace(/[\r\n]/g, "");
}

function pem2der(pem) {
    pem = preparePem(pem);
    // convert base64 to ArrayBuffer
    return new Uint8Array(Buffer.from(pem, "base64")).buffer;
}

async function main() {
    const hash = "SHA-256"
    const alg = {
        name: "RSASSA-PKCS1-v1_5",
        hash,
    }

    // Read cert
    const certPem = fs.readFileSync("cert.pem", { encoding: "utf8" });
    const certDer = pem2der(certPem);

    // Read key
    const keyPem = fs.readFileSync("key.pem", { encoding: "utf8" });
    const keyDer = pem2der(keyPem);
    const key = await crypto.subtle.importKey("pkcs8", keyDer, alg, false, ["sign"]);

    // XAdES-EPES
    var xmlString = `<Test><Document attr="Hello"/></Test>`;
    var xml = xadesjs.Parse(xmlString);

    var xadesXml = new xadesjs.SignedXml();
    const x509 = preparePem(certPem);
    const signature = await xadesXml.Sign(   // Signing document
        alg,                                    // algorithm
        key,                                    // key
        xml,                                    // document
        {                                       // options
            references: [
                { hash, transforms: ["c14n", "enveloped"] }
            ],
            policy: {
                hash,
                identifier: {
                    qualifier: "OIDAsURI",
                    value: "quilifier.uri",
                },
                qualifiers: [
                    {
                        noticeRef: {
                            organization: "PeculiarVentures",
                            noticeNumbers: [1, 2, 3, 4, 5]
                        }
                    }
                ]
            },
            productionPlace: {
                country: "Russia",
                state: "Marij El",
                city: "Yoshkar-Ola",
                code: "424000",
            },
            signingCertificate: x509
        });

    // append signature
    xml.documentElement.appendChild(signature.GetXml());

    // serialize XML
    const oSerializer = new XMLSerializer();
    const sXML = oSerializer.serializeToString(xml);
    console.log(sXML.toString())
}

main()
    .catch((err) => {
        console.error(err);
    });

TESTING

In NodeJS:

npm test

THANKS AND ACKNOWLEDGEMENT

This project takes inspiration (style, approach, design and code) from both the Mono System.Security.Cryptography.Xml implementation as well as xml-crypto.

Published

Vulnerabilities

Links

Maintainers

Keywords

Readme

XAdESjs

INSTALLING

COMPATABILITY

CRYPTOGRAPHIC ALGORITHM SUPPORT

CANONICALIZATION ALGORITHM SUPPORT

PLATFORM SUPPORT

WARNING

Usage

Sign

Options

Verify

EXAMPLES

Create XAdES-BES Signature

In Node

In the browser

Check XAdES-BES Signature

In Node

In the browser

XAdES-EPES signature

TESTING

In NodeJS:

THANKS AND ACKNOWLEDGEMENT

RELATED