Hyperledger Fabric：无法更新 Node SDK 中的证书属性

问题描述 投票：0回答：2

我正在制作一个区块链应用程序，我正在使用Hyperledger Fabric Node SDK。当用户注册时，用户的证书将作为身份添加到钱包中。现在，我存储在用户证书中的属性是电子邮件和密码。 此外，用户的密码不存储在其他任何地方，而仅存储在证书中。 现在，我还需要更新用户的密码。

在网上搜索得知，证书中的属性可以使用Node中提供的identityService的更新功能进行更新，并且如果使用identityService的更新功能，则无需重新注册用户。 问题是我尝试过，响应显示了更新的密码。 但当我检查证书时，旧密码仍然存在，即它尚未更新。 我对 FabricCAServices 使用 fabric-ca-client 包，对 x509 证书使用 x509 包。

我注册用户的代码如下：

let ccp = await getCCP(orgName);
const caURL = await getCaUrl(orgName, ccp)
const ca = new FabricCAServices(caURL);
    
const walletPath = await getWalletPath(orgName);
const wallet = await Wallets.newFileSystemWallet(walletPath);
logger.info(`Wallet path: ${walletPath}`);

const userIdentity = await wallet.get(email); //getting user from the wallet
if (userIdentity) //if found so user is already registered
{
    return "User Already Exists";
}
    
//else user does not exist so checking if admin exists
let adminIdentity = await wallet.get('admin'); //getting admin from wallet
if (!adminIdentity) { //if not found so admin does not exist
    logger.debug('An identity for the admin user "admin" does not exist in the wallet');
    await enrollAdmin(orgName, ccp); //enrolling the admin
    adminIdentity = await wallet.get('admin');
    logger.debug("Admin Enrolled Successfully");
}

//now admin exists, so making a user object for authenticating with the CA(i.e. admin)
const provider = wallet.getProviderRegistry().getProvider(adminIdentity.type);
const adminUser = await provider.getUserContext(adminIdentity, 'admin');
let secret;
try {
    //registering the user, enrolling the user, and importing the new identity into the wallet.
    secret = await ca.register({ affiliation: 'org1.department1', enrollmentID: email, role: 'client', attrs: [{name: 'userType', value: userType, ecert: true},{name: 'password', value: password, ecert: true}]}, adminUser);
} catch (error) {
    return error.message;
}

const enrollment = await ca.enroll({ enrollmentID: email, enrollmentSecret: secret, attr_reqs: [{  name: 'userType', optional: false }, {  name: 'password', optional: false }] });

let x509Identity;
if (orgName == "Org1") {
    x509Identity = {
        credentials: {
            certificate: enrollment.certificate,
            privateKey: enrollment.key.toBytes(),
        },
        mspId: 'Org1MSP',
        type: 'X.509',
    };
} else if (orgName == "Org2") {
    x509Identity = {
        credentials: {
            certificate: enrollment.certificate,
            privateKey: enrollment.key.toBytes(),
        },
        mspId: 'Org2MSP',
        type: 'X.509',
    };
}
await wallet.put(email, x509Identity); //adding user to wallet
return "Registered!";

我检查密码中存储的属性的代码是：

//Getting wallet path for orgName...
const walletPath = await getWalletPath(orgName);
const wallet = await Wallets.newFileSystemWallet(walletPath);
logger.info(`Wallet path: ${walletPath}`);

//getting this user from the wallet
const userIdentity = await wallet.get(email);
if (userIdentity) { //if found i.e. user is registered
    //parsing certificate to get password
    var issuer = x509.parseCert(userIdentity.credentials.certificate);
    var jsn = issuer.extensions['1.2.3.4.5.6.7.8.1'];
    jsn = jsn.substring(2);
    jsn = (JSON.parse(jsn));
    //here jsn.attrs.password has the password
}

我用来更新证书属性的代码是：

let ccp = await getCCP(orgName);
const caURL = await getCaUrl(orgName, ccp);
const ca = new FabricCAServices(caURL);

//Getting wallet path for orgName...
const walletPath = await getWalletPath(orgName);
const wallet = await Wallets.newFileSystemWallet(walletPath);
logger.info(`Wallet path: ${walletPath}`);

const userIdentity = await wallet.get(email); //getting this user from the wallet
if (userIdentity) { //if found i.e. user is registered

    //Create a new gateway for connecting to our peer node
    const gateway = new Gateway();
    await gateway.connect(ccp, { wallet, identity: email, discovery: { enabled: true, asLocalhost: true } });

    const identityService = ca.newIdentityService();

    let adminIdentity = await wallet.get('admin'); //getting admin from wallet
    //now making a user object of the admin
    const provider = wallet.getProviderRegistry().getProvider(adminIdentity.type);
    const adminUser = await provider.getUserContext(adminIdentity, 'admin');

    var theIdentityRequest = { enrollmentID: email, affiliation: 'org1.department1', attrs: [ {name: 'userType', value: 'Student', ecert: true},{name: 'password', value: newPassword, ecert: true} ] };

    logger.warn("The Request: ", theIdentityRequest);

    let response = await identityService.update(email, theIdentityRequest, adminUser);
                
    logger.warn("userIdenity attributes: ",response.result.attrs);

    await gateway.disconnect();
}

我想知道为什么证书仍然有旧密码以及如何更新证书中的密码。 我还想知道 IdentityService 是否会更新 x509 证书中的属性，或者是否需要重新注册用户？

node.js hyperledger-fabric blockchain x509certificate
2个回答
3
投票

您可以按照您所说的操作

reenroll
来修复它。

update
的
IdentityService
命令是更新
registered
用户在CA中的身份。
由于这不是更新证书的过程，因此获得包含新修改的证书
Attr
的唯一方法是获得新证书（该证书是X.509标准）。

为什么属性更改需要新证书？

  • Fabric一般使用X.509证书标准方法。（不使用idemix时）
  • 其实不只是Fabric，网上几乎所有的证书都遵循标准。
  • 在Fabric中，
    Attr
    存在于X509(v3)证书中的
    extensions
    中，其格式如下。
X509v3 extensions:
    ...
    1.2.3.4.5.6.7.8.1:
        {"attrs":{"hf.Affiliation":"org1.department1","hf.EnrollmentID":"appUser5","hf.Type":"client","userType":"userType"}}
    ...
  • 换句话说，当 
    Attr
    被修改时，
    extensions
    也被修改。
  • 在 X.509(v3) 中，
    extenstions
    也包含在证书完整性验证过程中。
  • 完整性验证过程基于
    PKI
    和
    Hash
    实现，并以将CA签名的
    signature
    附加到证书的哈希数据（包括扩展）的形式提供。
  • 也就是说，如果修改
    extensions
    ，证书中的
    signature
    也必须修改，也就是说必须签发新证书。

回到面料，

  • reenroll
    命令是
    newly issuing
    根据
    registered user
    注册用户数据的行为。
  • updating
    之后，通过
    reenroll
    命令颁发新证书，获取对应证书中包含
    new Attrs
    的证书。

以下示例代码已经过测试并且可以工作。看看这个。

// registerUser, enrollUser, updateUser, reEnrollUser

/*
 * Copyright IBM Corp. All Rights Reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

'use strict';

const { Wallets } = require('fabric-network');
const FabricCAServices = require('fabric-ca-client');
const fs = require('fs');
const path = require('path');

async function main() {
    try {
        // 0. given, already enrolled 'admin'
        const ccpPath = path.resolve(__dirname, '..', '..', 'test-network', 'organizations', 'peerOrganizations', 'org1.example.com', 'connection-org1.json');
        const ccp = JSON.parse(fs.readFileSync(ccpPath, 'utf8'));
        const caURL = ccp.certificateAuthorities['ca.org1.example.com'].url;
        const ca = new FabricCAServices(caURL);
        const walletPath = path.join(process.cwd(), 'wallet');
        const wallet = await Wallets.newFileSystemWallet(walletPath);
        const provider = wallet.getProviderRegistry().getProvider('X.509');
        
        // 1. register testUser
        const adminIdentity = await wallet.get('admin');
        const appUser = 'testUser';
        const adminUser = await provider.getUserContext(adminIdentity, 'admin');
        const secret = await ca.register({
                affiliation: 'org1.department2',
                attrs: [{name: 'userType', value: 'userType', ecert: true}],
                enrollmentID: appUser,
                role: 'client'
        }, adminUser);

        // 2. enroll testUser
        const enrollment = await ca.enroll({
                enrollmentID: appUser,
                enrollmentSecret: secret
        });
        const x509Identity = {
                credentials: {
                        certificate: enrollment.certificate,
                        privateKey: enrollment.key.toBytes(),
                },
                mspId: 'Org1MSP',
                type: 'X.509',
        };
        await wallet.put(appUser, x509Identity);

        // 3. update testUser's Identity in Fabric-CA
        const appUserIdentity = await wallet.get(appUser);
        const newAppUser = await provider.getUserContext(appUserIdentity, appUser);
        const identityService = ca.newIdentityService();
        var theIdentityRequest = { enrollmentID: appUser, affiliation: 'org1.department1', attrs: [ {name: 'userType', value: 'Student', ecert: true} ] };
        let response = await identityService.update(appUser, theIdentityRequest, adminUser);
        console.log("userIdenity attributes: ", response.result.attrs);

        // 4. reenroll testUser
        const newEnrollment = await ca.reenroll(newAppUser);
        const newX509Identity = {
                credentials: {
                        certificate: newEnrollment.certificate,
                        privateKey: newEnrollment.key.toBytes(),
                },
                mspId: 'Org1MSP',
                type: 'X.509',
        };
        await wallet.put(`new_${appUser}`, newX509Identity);

    } catch (error) {
        console.error(`Failed to register user "appUser": ${error}`);
        process.exit(1);
    }
}

ls wallet
testUser.id  new_testUser.id

颁发证书的docode结果 （

hf.Affiliation
和
userType
已更新）

// attrs in 'enroll' Certificate's extensions
{"attrs": "hf.Affiliation":"org1.department2","hf.EnrollmentID":"testUser","hf.Type":"client","userType":"userType"}}

// attrs in 'reenroll' Certificate's extensions
{"attrs":{"hf.Affiliation":"org1.department1","hf.EnrollmentID":"testUser","hf.Type":"client","userType":"Student"}}

[P.S] 看客户身份中标明的

Version
，似乎可能有一种方法可以升级现有的，但我没有检查或尝试过。

0
投票

我们可以使用新身份（重新注册的身份）在 wallet.put() 中重新注册具有相同名称的用户和管理员吗？？？？

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