com.github.shepherdviolet.glacimon.java.crypto.base.BaseBCCertificateUtils Maven / Gradle / Ivy
/*
* Copyright (C) 2022-2022 S.Violet
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Project GitHub: https://github.com/shepherdviolet/glacimon
* Email: [email protected]
*/
package com.github.shepherdviolet.glacimon.java.crypto.base;
import org.bouncycastle.asn1.*;
import org.bouncycastle.asn1.x500.RDN;
import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.asn1.x500.style.BCStyle;
import org.bouncycastle.asn1.x509.Extension;
import org.bouncycastle.asn1.x509.*;
import org.bouncycastle.asn1.x9.X9ECPoint;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import org.bouncycastle.cert.X509CertificateHolder;
import org.bouncycastle.cert.X509v3CertificateBuilder;
import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
import org.bouncycastle.cert.jcajce.JcaX509ExtensionUtils;
import org.bouncycastle.cert.jcajce.JcaX509v3CertificateBuilder;
import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
import org.bouncycastle.crypto.params.ECPublicKeyParameters;
import org.bouncycastle.crypto.util.PrivateKeyFactory;
import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey;
import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey;
import org.bouncycastle.jcajce.provider.asymmetric.util.KeyUtil;
import org.bouncycastle.operator.*;
import org.bouncycastle.operator.bc.BcRSAContentSignerBuilder;
import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
import org.bouncycastle.pkcs.PKCS10CertificationRequest;
import org.bouncycastle.pkcs.PKCS10CertificationRequestBuilder;
import com.github.shepherdviolet.glacimon.java.misc.CloseableUtils;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigInteger;
import java.security.*;
import java.security.cert.Certificate;
import java.security.cert.*;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.List;
/**
* [Bouncy castle]证书处理基本逻辑
*
* Not recommended for direct use
*
* 不建议直接使用
*
* @author shepherdviolet
*/
public class BaseBCCertificateUtils {
private static final SignatureAlgorithmIdentifierFinder SIGNATURE_ALGORITHM_IDENTIFIER_FINDER = new DefaultSignatureAlgorithmIdentifierFinder();
private static final DigestAlgorithmIdentifierFinder DIGEST_ALGORITHM_IDENTIFIER_FINDER = new DefaultDigestAlgorithmIdentifierFinder();
private static final ReversedBCStyle REVERSED_BC_STYLE = new ReversedBCStyle();
static {
BouncyCastleProviderUtils.installProvider();
}
/***********************************************************************************************
* Common
***********************************************************************************************/
/**
* 使用BouncyCastle从输入流中解析证书, 适用于SM2等更多算法的证书
*
* @param inputStream 证书数据流, 会被close掉
* @param type 证书数据格式, 例如X.509
* @return 如果type是X.509, 可以强制类型转换为X509Certificate
*/
public static Certificate parseCertificateByBouncyCastle(InputStream inputStream, String type) throws CertificateException, NoSuchProviderException {
try {
Certificate certificate;
certificate = CertificateFactory.getInstance(type, BouncyCastleProviderUtils.getProviderName()).generateCertificate(inputStream);
if (certificate == null) {
throw new CertificateException("Failed to parse certificate, returns null. (If the certificate data is Base64 encoded, please decode it before parse)");
}
return certificate;
} finally {
CloseableUtils.closeQuiet(inputStream);
}
}
/**
* 将用户证书/CA证书/根证书组装成证书链
* @param certificateList 用户证书/CA证书/根证书, 顺序为用户证书->CA证书->根证书
* @param type 证书数据格式, 例如X.509
*/
public static CertPath generateCertPath(List certificateList, String type) throws CertificateException, NoSuchProviderException {
CertificateFactory factory = CertificateFactory.getInstance(type, BouncyCastleProviderUtils.getProviderName());
return factory.generateCertPath(certificateList);
}
/**
* 使用BouncyCastle从输入流中解析证书链, 适用于SM2等更多算法的证书
* @param inputStream 证书链数据流, 会被close掉
* @param type 证书数据格式, 例如X.509
* @param encoding 证书编码. 例如PKCS7
*/
public static CertPath parseCertPathByBouncyCastle(InputStream inputStream, String type, String encoding) throws CertificateException, NoSuchProviderException {
try {
return CertificateFactory.getInstance(type, BouncyCastleProviderUtils.getProviderName()).generateCertPath(inputStream, encoding);
} finally {
CloseableUtils.closeQuiet(inputStream);
}
}
/**
* 使用颁发者公钥验证证书有效性(包括有效期验证)
* @param certificate 证书
* @param issuerPublicKey 颁发者公钥
* @param currentTime 当前时间(用于有效期验证)
*/
public static void verifyCertificate(X509Certificate certificate, PublicKey issuerPublicKey, Date currentTime)
throws NoSuchProviderException, CertificateException, NoSuchAlgorithmException, InvalidKeyException, SignatureException {
certificate.verify(issuerPublicKey, BouncyCastleProviderUtils.getProviderName());
certificate.checkValidity(currentTime);
}
/**
* 使用颁发者公钥验证证书有效性(包括有效期验证)
* @param certificate 证书
* @param issuerPublicKeyParams 颁发者公钥
* @param currentTime 当前时间(用于有效期验证)
*/
public static void verifyCertificate(X509Certificate certificate, ECPublicKeyParameters issuerPublicKeyParams, Date currentTime)
throws NoSuchProviderException, CertificateException, NoSuchAlgorithmException, InvalidKeyException, SignatureException {
certificate.verify(BaseBCAsymKeyGenerator.ecPublicKeyParamsToEcPublicKey(issuerPublicKeyParams, "EC"),
BouncyCastleProviderUtils.getProviderName());
certificate.checkValidity(currentTime);
}
/**
* 证书链的方式验证证书是否有效.
* @param certificate 待验证的证书. 注意, 不可以是根证书.
* @param currentTime 当前时间(用于有效期验证)
* @param issuerProvider 提供验证所需的证书颁发者. 例如: SimpleIssuerProvider / RootIssuerProvider
* @param issuerProviderParameter 传给IssuerProvider的参数, 可选, 取决于IssuerProvider是否需要
*/
public static void verifyCertificateByIssuers(X509Certificate certificate, Date currentTime, IssuerProvider issuerProvider, ParameterType issuerProviderParameter) throws CertificateException {
if (issuerProvider == null) {
throw new IllegalArgumentException("issuerProvider is null");
}
if (certificate == null) {
throw new CertificateException("certificate is null");
}
X509Certificate current = certificate;
X509Certificate issuer;
String currentDn = current.getSubjectX500Principal().getName();
String issuerDn = current.getIssuerX500Principal().getName();
if (currentDn.equals(issuerDn)) {
// 待验证的证书不允许是根证书, 避免客户端拿根证书骗过验证
throw new CertificateException("The certificate to be verified is a root certificate. When verifying certificate: " + certificate);
}
StringBuilder dnPath = new StringBuilder().append("[").append(currentDn).append("] -> [").append(issuerDn).append("]");
for (int i = 0 ; i < 10 ; i++) {
issuer = issuerProvider.findIssuer(issuerDn, issuerProviderParameter);
if (issuer == null) {
throw new CertificateException("Certificate issuer '" + issuerDn + "' not found. " + dnPath + " (Not Found!). When verifying certificate: " + certificate);
}
try {
verifyCertificate(current, issuer.getPublicKey(), currentTime);
} catch (Exception e) {
throw new CertificateException("One of the certificate is invalid (in chain). " + dnPath + " (Invalid!). The invalid certificate is '" + current + "'. When verifying certificate: " + certificate, e);
}
// 遇到根证书结束, 验证成功
// issuerProvider返回的证书如果是ActAsRoot, 则视为根证书处理, 不再继续查找签发者
if (currentDn.equals(issuerDn) || issuer instanceof IssuerProvider.ActAsRoot) {
return;
}
current = issuer;
currentDn = current.getSubjectX500Principal().getName();
issuerDn = current.getIssuerX500Principal().getName();
dnPath.append(" -> [").append(issuerDn).append("]");
}
throw new CertificateException("Too many CA certifications (> 10). " + dnPath + ". When verifying certificate: " + certificate);
}
/**
* 获取证书支持的所有域名, 从CN和Alternative Names中获取
* @param certificate 证书
*/
public static List getDomainNamesFromCertificate(X509Certificate certificate) throws CertificateParsingException, IOException {
if (certificate == null) {
return new ArrayList<>(0);
}
List domainNames;
// 取CN
X500NameWrapper x500NameWrapper = dnToX500Name(certificate.getSubjectX500Principal().getName());
List cns = x500NameWrapper.getObjects(BCStyle.CN);
// 取Alternative Names
Collection> alternativeNames = certificate.getSubjectAlternativeNames();
if (alternativeNames != null && alternativeNames.size() > 0) {
domainNames = new ArrayList<>(alternativeNames.size() + cns.size());
domainNames.addAll(cns);
for (List typeValue : alternativeNames) {
if (typeValue.size() != 2) {
continue;
}
if (typeValue.get(0).equals(2)) {
domainNames.add(String.valueOf(typeValue.get(1)));
}
}
} else {
domainNames = new ArrayList<>(cns.size());
domainNames.addAll(cns);
}
return domainNames;
}
/***********************************************************************************************
* RSA
***********************************************************************************************/
/**
* 生成RSA根证书(自签名证书)
*
*
* CN=(名称或域名),
* OU=(部门名称),
* O=(组织名称),
* L=(城市或区域名称),
* ST=(州或省份名称),
* C=(国家代码)
*
*
* @param dn 证书的DN信息, 例:CN=Test CA, OU=IT Dept, O=My Company, L=Ningbo, ST=Zhejiang, C=CN
* @param publicKey 证书的RSA公钥
* @param privateKey 证书的RSA私钥(自签名)
* @param validity 证书的有效期(天), 例:3650
* @param signAlgorithm 签名算法, 例如:SHA256withRSA
*
*/
public static X509Certificate generateRSAX509RootCertificate(String dn, RSAPublicKey publicKey, RSAPrivateKey privateKey, int validity, String signAlgorithm) throws IOException, CertificateException, OperatorCreationException {
return generateRSAX509Certificate(dn, publicKey, validity, signAlgorithm, null, privateKey);
}
/**
* 生成RSA证书(由CA证书私钥颁发)
*
*
* CN=(名称或域名),
* OU=(部门名称),
* O=(组织名称),
* L=(城市或区域名称),
* ST=(州或省份名称),
* C=(国家代码)
*
*
* @param subjectDn 申请证书的DN信息, 例:CN=Test CA, OU=IT Dept, O=My Company, L=Ningbo, ST=Zhejiang, C=CN
* @param subjectPublicKey 申请证书的RSA公钥
* @param subjectValidity 申请证书的有效期(天), 例:3650
* @param signAlgorithm 签名算法, 例如:SHA256withRSA
* @param issuerCertificate 证书颁发者(CA)的证书
* @param issuerPrivateKey 证书颁发者(CA)的RSA私钥
*/
@SuppressWarnings({"lgtm[java/input-resource-leak]"})
public static X509Certificate generateRSAX509Certificate(String subjectDn, RSAPublicKey subjectPublicKey, int subjectValidity, String signAlgorithm, X509Certificate issuerCertificate, RSAPrivateKey issuerPrivateKey) throws IOException, CertificateException, OperatorCreationException {
//certificate builder
X509v3CertificateBuilder certificateBuilder = new X509v3CertificateBuilder(
//issuer dn
new X500Name(REVERSED_BC_STYLE, issuerCertificate != null ? issuerCertificate.getSubjectX500Principal().toString() : subjectDn),
//serial
BigInteger.probablePrime(32, BaseKeyGenerator.getSystemSecureRandom()),
//start date
new Date(),
//expire date
new Date(System.currentTimeMillis() + subjectValidity * 24L * 60L * 60L * 1000L),
//subject dn
new X500Name(REVERSED_BC_STYLE, subjectDn),
//public key, About suppressed warnings: ASN1InputStream (with byte[] data) doesn't need to close
SubjectPublicKeyInfo.getInstance(new ASN1InputStream(subjectPublicKey.getEncoded()).readObject()));
//sign
AlgorithmIdentifier signAlgorithmId = SIGNATURE_ALGORITHM_IDENTIFIER_FINDER.find(signAlgorithm);
AlgorithmIdentifier digestAlgorithmId = DIGEST_ALGORITHM_IDENTIFIER_FINDER.find(signAlgorithmId);
AsymmetricKeyParameter asymmetricKeyParameter = PrivateKeyFactory.createKey(issuerPrivateKey.getEncoded());
ContentSigner contentSigner = new BcRSAContentSignerBuilder(signAlgorithmId, digestAlgorithmId).build(asymmetricKeyParameter);
X509CertificateHolder holder = certificateBuilder.build(contentSigner);
//to certificate
return (X509Certificate) CertificateFactory.getInstance("X509").generateCertificate(new ByteArrayInputStream(holder.getEncoded()));
}
/***********************************************************************************************
* SM2
***********************************************************************************************/
/**
* 生成SM2证书的申请数据CSR (CSR包含申请者信息, CA收到CSR后签名并返回证书)
*
*
* CN=(名称或域名),
* OU=(部门名称),
* O=(组织名称),
* L=(城市或区域名称),
* ST=(州或省份名称),
* C=(国家代码)
*
*
* @param subjectDn 申请人DN信息, 例:CN=Test CA, OU=IT Dept, O=My Company, L=Ningbo, ST=Zhejiang, C=CN
* @param publicKeyParams 申请人公钥
* @param privateKeyParams 申请人私钥
* @return 证书申请数据, CSR
*/
public static byte[] generateSm2Csr(String subjectDn,
ECPublicKeyParameters publicKeyParams,
ECPrivateKeyParameters privateKeyParams) throws OperatorCreationException, IOException {
//转换密钥类型
BCECPublicKey publicKey = BaseBCAsymKeyGenerator.ecPublicKeyParamsToEcPublicKey(publicKeyParams, "EC");
BCECPrivateKey privateKey = BaseBCAsymKeyGenerator.ecPrivateKeyParamsToEcPrivateKey(privateKeyParams, publicKeyParams, "EC");
//公钥需要特殊处理, 指定算法/协议/公钥值
SubjectPublicKeyInfo subjectPublicKeyInfo = new SubjectPublicKeyInfo(
new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, new ASN1ObjectIdentifier("1.2.156.10197.1.301")),
ASN1OctetString.getInstance(new X9ECPoint(publicKey.getQ(), false).toASN1Primitive()).getOctets());
byte[] publicKeyEncoded = KeyUtil.getEncodedSubjectPublicKeyInfo(subjectPublicKeyInfo);
//产生CSR
X500Name dn = new X500Name(REVERSED_BC_STYLE, subjectDn);
PKCS10CertificationRequestBuilder certReqBuilder = new PKCS10CertificationRequestBuilder(
dn,
SubjectPublicKeyInfo.getInstance(publicKeyEncoded));
// // 扩展信息, critical表示该信息是否强制执行
// ExtensionsGenerator extensionsGenerator = new ExtensionsGenerator();
// // true: 申请签发CA证书 ///////////////////////////////////////////////////////////////////////////////////////
// //extensionsGenerator.addExtension(Extension.basicConstraints, true, new BasicConstraints(true));
// // 增加可选域名 ////////////////////////////////////////////////////////////////////////////////////////////////
// GeneralName[] subjectAltNames = new GeneralName[2];
// subjectAltNames[0] = new GeneralName(GeneralName.dNSName, "1.host.com");
// subjectAltNames[1] = new GeneralName(GeneralName.dNSName, "2.host.com");
// extensionsGenerator.addExtension(Extension.subjectAlternativeName, false, new GeneralNames(subjectAltNames));
// // CSR(P10)请求CA颁发这些用途的证书, CA可以选择拒绝, 也可以选择无视 ////////////////////////////////////////////////
// // 用于签名: KeyUsage.digitalSignature | KeyUsage.nonRepudiation
// // 用于加密: KeyUsage.keyEncipherment | KeyUsage.dataEncipherment
// // 用于签发证书: KeyUsage.digitalSignature | KeyUsage.keyCertSign | KeyUsage.cRLSign
// KeyUsage keyUsage = new KeyUsage(KeyUsage.digitalSignature | KeyUsage.nonRepudiation);
// extensionsGenerator.addExtension(Extension.keyUsage, true, keyUsage);// 证书用途
// certReqBuilder.addAttribute(PKCSObjectIdentifiers.pkcs_9_at_extensionRequest, extensionsGenerator.generate());
ContentSigner signer = new JcaContentSignerBuilder("SM3withSM2")
.setProvider(BouncyCastleProviderUtils.getProviderName())
.build(privateKey);
return certReqBuilder
.build(signer)
.getEncoded();
}
/**
* 生成SM2证书, 这个方法只从CSR(P10)中获取公钥和DN信息, 其他扩展信息忽略了.
*
*
* CN=(名称或域名),
* OU=(部门名称),
* O=(组织名称),
* L=(城市或区域名称),
* ST=(州或省份名称),
* C=(国家代码)
*
*
* @param csr 证书申请数据, BaseBCCertificateUtils.generateSm2Csr(...)
* @param validity 申请证书的有效期(天), 例:3650
* @param issuerDn 证书颁发者(CA)的DN信息, 例:CN=Test CA, OU=IT Dept, O=My Company, L=Ningbo, ST=Zhejiang, C=CN
* @param issuerPublicKeyParams 证书颁发者(CA)的公钥
* @param issuerPrivateKeyParams 证书颁发者(CA)的私钥
* @param generateCaCert true:生成CA证书 false:生成用户证书
* @param usage 证书用途, 本方法签发证书时, 会忽略CSR中请求的证书用途, 用这个参数强制覆盖.
* 用于签名: new KeyUsage(KeyUsage.digitalSignature | KeyUsage.nonRepudiation).
* 用于加密: new KeyUsage(KeyUsage.keyEncipherment | KeyUsage.dataEncipherment).
* 用于签发证书: new KeyUsage(KeyUsage.digitalSignature | KeyUsage.keyCertSign | KeyUsage.cRLSign).
* @param subjectAlternativeName 可选域名, 可为空, new GeneralName[]{new GeneralName(GeneralName.dNSName, "1.host.com"),
* new GeneralName(GeneralName.dNSName, "2.host.com")}
*/
public static X509Certificate generateSm2X509Certificate(byte[] csr,
int validity,
String issuerDn,
ECPublicKeyParameters issuerPublicKeyParams,
ECPrivateKeyParameters issuerPrivateKeyParams,
boolean generateCaCert,
KeyUsage usage,
GeneralName[] subjectAlternativeName) throws IOException, InvalidKeySpecException, NoSuchAlgorithmException, OperatorCreationException, CertificateException {
//解析CSR
PKCS10CertificationRequest request = new PKCS10CertificationRequest(csr);
byte[] publicKeyEncoded = request.getSubjectPublicKeyInfo().toASN1Primitive().getEncoded(ASN1Encoding.DER);
//公钥
BCECPublicKey publicKey = BaseBCAsymKeyGenerator.parseEcPublicKeyByX509(publicKeyEncoded, "EC");
//CA公钥
BCECPublicKey issuerPublicKey = BaseBCAsymKeyGenerator.ecPublicKeyParamsToEcPublicKey(issuerPublicKeyParams, "EC");
//CA私钥
BCECPrivateKey issuerPrivateKey = BaseBCAsymKeyGenerator.ecPrivateKeyParamsToEcPrivateKey(issuerPrivateKeyParams, issuerPublicKeyParams, "EC");
//证书生成器
X509v3CertificateBuilder certificateBuilder = new JcaX509v3CertificateBuilder(
//issuer dn
new X500Name(REVERSED_BC_STYLE, issuerDn),
//serial
BigInteger.probablePrime(32, BaseKeyGenerator.getSystemSecureRandom()),
//start date
new Date(),
//expire date
new Date(System.currentTimeMillis() + validity * 24L * 60L * 60L * 1000L),
//subject dn
request.getSubject(),
//public key
publicKey);
//扩展工具
JcaX509ExtensionUtils extensionUtils = new JcaX509ExtensionUtils();
//扩展参数
certificateBuilder.addExtension(
Extension.subjectKeyIdentifier,
false, //是否强制执行
extensionUtils.createSubjectKeyIdentifier(SubjectPublicKeyInfo.getInstance(publicKey.getEncoded())));
certificateBuilder.addExtension(
Extension.authorityKeyIdentifier,
false, //是否强制执行
extensionUtils.createAuthorityKeyIdentifier(SubjectPublicKeyInfo.getInstance(issuerPublicKey.getEncoded())));
// 证书用途 (这里是强制覆盖的, 无视了CSR中的请求信息)
certificateBuilder.addExtension(
Extension.basicConstraints,
false, //是否强制执行
new BasicConstraints(generateCaCert));
// 证书用途 (这里是强制覆盖的, 无视了CSR中的请求信息)
certificateBuilder.addExtension(
Extension.keyUsage,
false, //是否强制执行
usage);
// 可选域名
if (subjectAlternativeName != null && subjectAlternativeName.length > 0) {
certificateBuilder.addExtension(
Extension.subjectAlternativeName,
false, //是否强制执行
new GeneralNames(subjectAlternativeName)
);
}
//签名器
JcaContentSignerBuilder contentSignerBuilder = new JcaContentSignerBuilder("SM3withSM2");
contentSignerBuilder.setProvider(BouncyCastleProviderUtils.getProviderName());
//生成证书
return new JcaX509CertificateConverter()
.setProvider(BouncyCastleProviderUtils.getProviderName())
.getCertificate(certificateBuilder.build(contentSignerBuilder.build(issuerPrivateKey)));
}
/***********************************************************************************************
* Others
***********************************************************************************************/
/**
* 将证书的DN信息转成X500Name实例 (便于获取里面具体的值, 例如获取CN)
* @param dn DN信息
* @return X500Name
*/
public static X500NameWrapper dnToX500Name(String dn) throws IOException {
return new X500NameWrapper(dn);
}
/**
* 解析ASN.1编码的X509证书数据
*
*
* 证书版本:cert.getVersion()
* 序列号:cert.getSerialNumber().getValue().toString(16)
* 算法标识:cert.getSignatureAlgorithm().getObjectId().getId()
* 签发者:cert.getIssuer()
* 开始时间:cert.getStartDate().getTime()
* 结束时间:cert.getEndDate().getTime()
* 主体名:cert.getSubject()
* 签名值:cert.getSignature().getBytes()
*
* 主体公钥:SubjectPublicKeyInfo publicInfo = cert.getSubjectPublicKeyInfo();
* 标识符:publicInfo.getAlgorithmId().getObjectId().getId()
* 公钥值:publicInfo.getPublicKeyData().getBytes()
*
*
*
* 标识符:
*
* rsaEncryption RSA算法标识 1.2.840.113549.1.1.1
* sha1withRSAEncryption SHA1的RSA签名 1.2.840.113549.1.1.5
* ECC ECC算法标识 1.2.840.10045.2.1
* SM2 SM2算法标识 1.2.156.10197.1.301
* SM3WithSM2 SM3的SM2签名 1.2.156.10197.1.501
* sha1withSM2 SHA1的SM2签名 1.2.156.10197.1.502
* sha256withSM2 SHA256的SM2签名 1.2.156.10197.1.503
* sm3withRSAEncryption SM3的RSA签名 1.2.156.10197.1.504
* commonName 主体名 2.5.4.3
* emailAddress 邮箱 1.2.840.113549.1.9.1
* cRLDistributionPoints CRL分发点 2.5.29.31
* extKeyUsage 扩展密钥用法 2.5.29.37
* subjectAltName 使用者备用名称 2.5.29.17
* CP 证书策略 2.5.29.32
* clientAuth 客户端认证 1.3.6.1.5.5.7.3.2
*
*
* @param inputStream X509证书输入流, ASN.1编码, 非Base64编码
*/
@SuppressWarnings("deprecation")
public static X509CertificateStructure parseX509ToStructure(InputStream inputStream) throws IOException {
try {
ASN1InputStream asn1InputStream = new ASN1InputStream(inputStream);
ASN1Sequence seq = (ASN1Sequence) asn1InputStream.readObject();
return new X509CertificateStructure(seq);
}finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (Throwable ignore){
}
}
}
}
/***********************************************************************************************
* Private
***********************************************************************************************/
/**
* 倒序的BCStyle, 因为BouncyCastle生成证书后DN信息是颠倒的, 为了保持原顺序, 我们在这里做一下倒序
*/
private static class ReversedBCStyle extends BCStyle {
@Override
public RDN[] fromString(String dirName) {
RDN[] rdns = super.fromString(dirName);
if (rdns != null && rdns.length > 1){
RDN temp;
for (int i = 0 ; i < rdns.length / 2 ; i++){
temp = rdns[i];
rdns[i] = rdns[rdns.length - 1 - i];
rdns[rdns.length - 1 - i] = temp;
}
}
return rdns;
}
}
}