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Fix the signing -wip

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This commit is contained in:
Kiran 2022-02-21 21:06:25 +05:30
parent aa76970fe7
commit b53c3b41b7
7 changed files with 41 additions and 33 deletions
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4
package.json
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@ -8,7 +8,6 @@
"lint": "next lint"
},
"dependencies": {
"@types/xml-crypto": "^1.4.2",
"axios": "^0.24.0",
"next": "12.1.0",
"node-fetch": "^3.2.0",
@ -29,6 +28,7 @@
"eslint-config-next": "12.0.7",
"postcss": "8.4.6",
"tailwindcss": "3.0.23",
"typescript": "4.5.4"
"typescript": "4.5.4",
"@types/xml-crypto": "^1.4.2"
}
}

4
pages/api/saml/sso.ts
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@ -1,5 +1,5 @@
import type { NextApiRequest, NextApiResponse } from 'next';
import { createResponseForm, createSAMLResponseXML } from 'utils';
import { createResponseForm, createResponseXML } from 'utils';
import { User } from 'types';
import config from '../../../lib/env'
import { signResponseXML } from 'utils/response';
@ -32,7 +32,7 @@ export default async function handler(
lastName: 'K',
};
const xml = await createSAMLResponseXML({
const xml = await createResponseXML({
idpIdentityId: idpIdentityId,
audience: audience,
acsUrl: acsUrl,

21
utils/certificate.ts
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@ -1,23 +1,24 @@
import { promises as fs } from 'fs';
import path from 'path';
const fetchPublicKey = async () => {
return await fs.readFile(path.join('data', 'idp-public.key'), 'utf8');
const fetchPublicKey = async (): Promise<string> => {
return await fs.readFile(path.join('data', 'idp-public.key'), 'ascii');
};
const fetchPrivateKey = async () => {
return await fs.readFile(path.join('data', 'idp-private.key'), 'utf8');
const fetchPrivateKey = async (): Promise<string> => {
return await fs.readFile(path.join('data', 'idp-private.key'), 'ascii');
}
const extractCert = (certificate: string) => {
return certificate
.replace('-----BEGIN CERTIFICATE-----', '')
.replace('-----END CERTIFICATE-----', '')
.trim();
const stripCertHeaderAndFooter = (cert: string): string => {
cert = cert.replace(/-+BEGIN CERTIFICATE-+\r?\n?/, '');
cert = cert.replace(/-+END CERTIFICATE-+\r?\n?/, '');
cert = cert.replace(/\r\n/g, '\n');
return cert;
};
export {
fetchPublicKey,
fetchPrivateKey,
extractCert,
stripCertHeaderAndFooter,
}

6
utils/index.ts
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@ -1,3 +1,3 @@
export { fetchPrivateKey, fetchPublicKey } from './certificate'
export {extractSAMLRequestAttributes, createIdPMetadataXML} from './request'
export { createSAMLResponseXML, createResponseForm, signResponseXML } from './response'
export * from './certificate'
export * from './request'
export * from './response'

33
utils/response.ts
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@ -1,9 +1,10 @@
import { User } from '../types';
import xmlbuilder from 'xmlbuilder';
import crypto from 'crypto';
import crypto, { sign } from 'crypto';
import { SignedXml, FileKeyInfo } from 'xml-crypto';
import { fetchPrivateKey, fetchPublicKey, stripCertHeaderAndFooter } from './certificate';
const createSAMLResponseXML = async (params: {
const createResponseXML = async (params: {
idpIdentityId: string,
audience: string,
acsUrl: string,
@ -142,24 +143,30 @@ const createResponseForm = (relayState: string, encodedSamlResponse: string, acs
};
const signResponseXML = async (xml: string, signingKey: any, publicKey: any): Promise<string> => {
return '';
const sig = new SignedXml();
const responseXPath = '/*[local-name(.)="Response" and namespace-uri(.)="urn:oasis:names:tc:SAML:2.0:protocol"]';
const issuerXPath = '/*[local-name(.)="Issuer" and namespace-uri(.)="urn:oasis:names:tc:SAML:2.0:assertion"]';
// const sig = new SignedXml();
publicKey = publicKey.replace(/\\n/gm, '\n');
signingKey = signingKey.replace(/\\n/gm, '\n');
// sig.signatureAlgorithm = 'http://www.w3.org/2001/04/xmldsig-more#rsa-sha256';
// sig.keyInfoProvider = new PubKeyInfo(publicKey);
console.log({publicKey, signingKey})
// sig.signingKey = signingKey;
// sig.addReference(authnXPath, ['http://www.w3.org/2000/09/xmldsig#enveloped-signature', 'http://www.w3.org/2001/10/xml-exc-c14n#'], 'http://www.w3.org/2001/04/xmlenc#sha256');
// sig.computeSignature(xml, {
// location: { reference: authnXPath + issuerXPath, action: 'after' },
// });
sig.signatureAlgorithm = 'http://www.w3.org/2001/04/xmldsig-more#rsa-sha256';
sig.keyInfoProvider = new FileKeyInfo(stripCertHeaderAndFooter(publicKey));
sig.signingKey = signingKey;
// return sig.getSignedXml();
sig.addReference(responseXPath, ['http://www.w3.org/2000/09/xmldsig#enveloped-signature', 'http://www.w3.org/2001/10/xml-exc-c14n#'], 'http://www.w3.org/2001/04/xmlenc#sha256');
sig.computeSignature(xml, {
location: { reference: responseXPath + issuerXPath, action: 'after' },
});
return sig.getSignedXml();
}
export {
createSAMLResponseXML,
createResponseXML,
createResponseForm,
signResponseXML
}