Google Cloud HSM 的 X509 证书

Question

我想为存储在 Google Cloud HSM 中的私钥生成 X509 证书。

使用 Java 密钥工具和本地 Java“密钥库”我会做这样的事情：

keytool -exportcert -alias sign1 -keystore signkeystore -storetype jks -storepass password -file sign1.certificate

见http://tutorials.jenkov.com/java-cryptography/keytool.html

使用 OpenSSL 我会做这样的事情：

openssl genrsa -out private.key 1024

openssl req -new -x509 -key private.key -out publickey.cer -days 365

openssl pkcs12 -export -out public_privatekey.pfx -inkey private.key -in publickey.cer

见X.509: Private / Public Key

看起来，生成证书需要访问 “私钥”，以某种方式，直接像 OpenSSL 或间接像 keytool 使用私钥库。

Gcloud 文档似乎使用 OpenSSL 生成私钥。 https://cloud.google.com/load-balancing/docs/ssl-certificates

如何在 Google Cloud HSM 中获取私钥的 X509 证书。有人做过吗？

问候苏恰克

Answer 1

我看过这个帖子 Creating an X509 Certificate in Java without BouncyCastle?。

然后我做了以下两个创建GCloud X509证书

在 GCloud HSM 中创建密钥（参见 https://cloud.google.com/kms/docs/hsm）
从 GCloud 下载 public 密钥。
使用下面的代码创建 X509 证书。
运行一些单元测试。

    /**
     * Create a self-signed X.509 based on a public key
     * @param googlePublicKey the Public key downloaded from Google Cloud HSM
     * @param dn        the X.509 Distinguished Name, eg "CN=Test, L=London, C=GB"
     * @param days      how many days from now the Example is valid for
     * @param algorithm the signing algorithm, eg "SHA1withRSA"
     */
    public static X509Certificate generateRSACertificate(String googlePublicKey, String dn, int days, String algorithm)
            throws GeneralSecurityException, IOException {
        byte[] derKey = Base64.decodeBase64(googlePublicKey);
        X509EncodedKeySpec keySpec = new X509EncodedKeySpec(derKey);
        PublicKey rsaKey = KeyFactory.getInstance("RSA").generatePublic(keySpec);
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        KeyPair keyPair = keyPairGenerator.generateKeyPair();
        PrivateKey privkey = keyPair.getPrivate();
        X509CertInfo info = new X509CertInfo();
        Date from = new Date();
        Date to = new Date(from.getTime() + days * 86400000l);
        CertificateValidity interval = new CertificateValidity(from, to);
        BigInteger sn = new BigInteger(64, new SecureRandom());
        X500Name owner = new X500Name(dn);

        info.set(X509CertInfo.VALIDITY, interval);
        info.set(X509CertInfo.SERIAL_NUMBER, new CertificateSerialNumber(sn));
        info.set(X509CertInfo.SUBJECT, owner);
        info.set(X509CertInfo.ISSUER, owner);
        info.set(X509CertInfo.KEY, new CertificateX509Key(rsaKey));
        info.set(X509CertInfo.VERSION, new CertificateVersion(CertificateVersion.V3));
        AlgorithmId algo = new AlgorithmId(AlgorithmId.md5WithRSAEncryption_oid);
        info.set(X509CertInfo.ALGORITHM_ID, new CertificateAlgorithmId(algo));

        // Sign the cert to identify the algorithm that's used.
        X509CertImpl cert = new X509CertImpl(info);
        cert.sign(privkey, algorithm);

        // Update the algorith, and resign.
        algo = (AlgorithmId) cert.get(X509CertImpl.SIG_ALG);
        info.set(CertificateAlgorithmId.NAME + "." + CertificateAlgorithmId.ALGORITHM, algo);
        cert = new X509CertImpl(info);
        cert.sign(privkey, algorithm);
        return cert;
    }

使用的进口是

import org.apache.commons.codec.binary.Base64;
import sun.security.x509.*;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.*;
import java.security.cert.Certificate;
import java.security.cert.*;
import java.security.spec.X509EncodedKeySpec;
import java.util.Collection;
import java.util.Date;

Google Cloud HSM 的 X509 证书

X509 certificate for Google Cloud HSM

java

security

openssl

keytool

google-cloud-platform