package cn.dong.cert;
import java.util.Map;
import java.util.Date;
import java.util.Vector;
import java.util.HashMap;
import java.util.Hashtable;
import java.math.BigInteger;
import java.security.KeyPair;
import java.security.Security;
import java.security.PublicKey;
import java.security.Signature;
import java.io.FileOutputStream;
import java.security.PrivateKey;
import org.bouncycastle.asn1.DERSet;
import java.security.KeyPairGenerator;
import org.bouncycastle.asn1.DERUTCTime;
import org.bouncycastle.asn1.DERInteger;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERBitString;
import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.asn1.x509.KeyUsage;
import org.bouncycastle.asn1.x509.Attribute;
import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.util.encoders.Base64;
import org.bouncycastle.asn1.x509.GeneralName;
import org.bouncycastle.asn1.x509.GeneralNames;
import org.bouncycastle.asn1.x509.CRLDistPoint;
import org.bouncycastle.asn1.x509.KeyPurposeId;
import org.bouncycastle.asn1.DERPrintableString;
import org.bouncycastle.asn1.DERGeneralizedTime;
import org.bouncycastle.asn1.x509.GeneralSubtree;
import org.bouncycastle.asn1.x509.PolicyMappings;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.x509.X509Extensions;
import org.bouncycastle.asn1.x509.NameConstraints;
import org.bouncycastle.asn1.x509.ExtendedKeyUsage;
import org.bouncycastle.asn1.x509.BasicConstraints;
import org.bouncycastle.asn1.x509.AccessDescription;
import org.bouncycastle.asn1.x509.PolicyInformation;
import org.bouncycastle.asn1.x509.DistributionPoint;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.SubjectKeyIdentifier;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.asn1.x509.DistributionPointName;
import org.bouncycastle.asn1.x509.PrivateKeyUsagePeriod;
import org.bouncycastle.asn1.x509.AuthorityKeyIdentifier;
import org.bouncycastle.asn1.x509.TBSCertificateStructure;
import org.bouncycastle.asn1.x509.X509ExtensionsGenerator;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.asn1.x509.X509CertificateStructure;
import org.bouncycastle.jce.provider.X509CertificateObject;
import org.bouncycastle.asn1.x509.V3TBSCertificateGenerator;
import org.bouncycastle.asn1.x509.SubjectDirectoryAttributes;
public class CertService {
public static void main(String[] agrs) throws Exception {
Security.addProvider(new BouncyCastleProvider()); // 加载BC Provider
int certValidity = 1; // 证书有效期
X500Name subject = new X500Name("CN=root,O=O,OU=OU"); //证书主题
X500Name issuer = new X500Name("CN=root,O=O,OU=OU"); //证书颁发者
KeyPair kp = genKeyPair("RSA"); // 产生RSA算法密钥对
PrivateKey priKey = kp.getPrivate();
PublicKey pubKey = kp.getPublic();
// 签发根证书
TBSCertificateStructure tbsCert = createTbsCert(certValidity, issuer,
subject, pubKey, pubKey);
// 签名算法
AlgorithmIdentifier alg = tbsCert.getSignature();
// 对证书主题进行签名
byte[] signData = sign(pubKey.getAlgorithm(), tbsCert.getEncoded(),
priKey);
// 构建证书
ASN1EncodableVector asn1Vector = new ASN1EncodableVector();
asn1Vector.add(tbsCert.getDERObject());
asn1Vector.add(alg.getDERObject());
asn1Vector.add(new DERBitString(signData));
X509CertificateObject cert = new X509CertificateObject(
new X509CertificateStructure(new DERSequence(asn1Vector)));
// 打印证书的base64编码
System.out.println("certBuf:"
+ new String(Base64.encode(cert.getEncoded())));
cert.verify(cert.getPublicKey()); // 验证签名,无异常验签通过
FileOutputStream fos = new FileOutputStream("cert.cer");
fos.write(cert.getEncoded());
fos.flush();
fos.close();
}
// 创建证书
public static TBSCertificateStructure createTbsCert(int certValidity,
X500Name IssuerName, X500Name subjectName, PublicKey certPubKey,
PublicKey issuerKey) throws Exception {
// 证书有效期
Date notBefore = new Date();
long validity = certValidity * 1000 * 60 * 60 * 24;
Date notAfter = new Date(notBefore.getTime() + validity);
// 证书公钥信息
SubjectPublicKeyInfo pubInfo = SubjectPublicKeyInfo
.getInstance(certPubKey.getEncoded());
// 组装证书主体
V3TBSCertificateGenerator genCert = new V3TBSCertificateGenerator();
genCert.setStartDate(new DERUTCTime(notBefore));
genCert.setSubject(new X500Name("CN=root,O=O,OU=OU"));
genCert.setIssuer(new X500Name("CN=root,O=O,OU=OU"));
genCert.setEndDate(new DERUTCTime(notAfter));
genCert.setSerialNumber(new DERInteger((int) System.currentTimeMillis()));
genCert.setSubjectPublicKeyInfo(pubInfo);
genCert.setSignature(new AlgorithmIdentifier("1.2.840.113549.1.1.5")); // SHA1withRSA
X509Extensions exts = genCertExtensions(issuerKey, certPubKey); // 创建证书扩展项
genCert.setExtensions(exts);
return genCert.generateTBSCertificate();
}
@SuppressWarnings("deprecation")
public static X509Extensions genCertExtensions(PublicKey issuerKey,
PublicKey subjectKey) throws Exception {
X509ExtensionsGenerator extGen = new X509ExtensionsGenerator();
/**
* 基本用途限制
*
* BasicConstraints := SEQUENCE { cA BOOLEAN DEFAULT FALSE, 是否是CA证书
* pathLenConstraint INTEGER (0..MAX) OPTIONAL 证书链长度约束 }
*/
BasicConstraints basicConstraints = new BasicConstraints(false, 0);
extGen.addExtension(X509Extensions.BasicConstraints, true,
basicConstraints);
/**
* 密钥用法 The KeyUsage object.
*
* id-ce-keyUsage OBJECT IDENTIFIER ::= { id-ce 15 }
*
* KeyUsage ::= BIT STRING {
* digitalSignature (0), 数据验签：除了签发证书/签发CRL之外的各种数字签名操作，
* 数据完整性、身份鉴别、数据源鉴别。检查算法可以做签名 digitalSignature位被断
* 言，当主题公开密钥用一数字的签名算法来支持安全 服务而非抗抵赖性（位1）、签名
* 证书（位5）或者签名撤销信息（位6） 的时候。数字的签名算法常常为实体和数据起源
* （做）完整性验证。
*
* nonRepudiation (1), 不可抵赖性:证书对应的私钥，用于生成非否认的证据，证书
* 用于验证非否认证据。
*
* keyEncipherment (2), 密钥加密：用于加密传输其他的密钥。检查可以加密密钥
* keyEncipherment位被断言，当主题公开密钥被用于密钥传输的时候。例如，当一
* RSA密钥用于密钥管理时候，那么这位将被断言。
*
* dataEncipherment (3), 数据加密：用于直接加解密应用数据，
* 通常都是公钥->对称密钥->应用数据。一般很少用这种方式的应用，因为：在密钥长度
* 安全的情况下，公钥密钥计算都是慢于对称密钥计算。检查可以加密数据 当主题公开密
* 钥用于（除了密码学的密钥）将用户数据加密使用的时候，dataEncipherment位被断言。
* keyAgreement (4), 密钥协商:在通信方之间协商对称密钥,例如：TLS、
* Diffie-Hellman的密钥协商。不同于keyEncipherment. KeyEncipherment是直接对
* Session Key进行加密 KeyAgreement是协商，别公钥加密的数据并不是直接作为密钥，
* 而是经过了一个多次步骤的过程，再导出Session Key。
*
* keyCertSign (5), 签发证书:用于签发CA证书。 keyAgreement位被断言，当主题
* 公开密钥为用于密钥协议的时候。例如，当一Diffie Hellman密钥是要为密钥管理被使
* 用的时候，那么这位将被断言。
*
* cRLSign (6), 签发crl：签发CRL，CA或者CRL Issuer
*
* encipherOnly (7), 证书公钥在密钥协商过程中，仅仅进行加密计算，配合
* KeyAgreement用法才有意义
*
* decipherOnly (8) }证书公钥在密钥协商过程中，仅仅进行解密计算，配合
* KeyAgreement用法才有意义
* }
*
*/
int usage = KeyUsage.digitalSignature;
usage += KeyUsage.nonRepudiation;
usage += KeyUsage.keyEncipherment;
usage += KeyUsage.dataEncipherment;
usage += KeyUsage.keyAgreement;
usage += KeyUsage.keyCertSign;
usage += KeyUsage.cRLSign;
usage += KeyUsage.encipherOnly;
usage += KeyUsage.decipherOnly;
KeyUsage keyUsage = new KeyUsage(usage);
extGen.addExtension(X509Extensions.KeyUsage, true, keyUsage);
/**
* 增强型密钥用法 The extendedKeyUsage object.
*
* <pre>
* extendedKeyUsage ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
* </pre>
*/
ASN1EncodableVector asn1ExtKeyUsage = new ASN1EncodableVector();
asn1ExtKeyUsage.add(KeyPurposeId.anyExtendedKeyUsage); // 任何用途
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_serverAuth); // SSL的服务器认证
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_clientAuth); // SSL的客户端认证
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_codeSigning); // 代码签名
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_emailProtection); // 电子邮件的加解密、签名等
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_ipsecEndSystem); //
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_ipsecTunnel); //
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_ipsecUser); //
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_timeStamping); // 时间戳 认证
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_OCSPSigning); // ocsp证书认证
/*
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_dvcs);
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_sbgpCertAAServerAuth);
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_scvp_responder);
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_eapOverPPP);
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_eapOverLAN);
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_scvpServer);
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_scvpClient);
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_ipsecIKE);
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_capwapAC);
* asn1ExtKeyUsage.add(KeyPurposeId.id_kp_capwapWTP);
*/
asn1ExtKeyUsage.add(KeyPurposeId.id_kp_smartcardlogon);
ExtendedKeyUsage extendedKeyUsage = new ExtendedKeyUsage(
new DERSequence(asn1ExtKeyUsage));
extGen.addExtension(X509Extensions.ExtendedKeyUsage, true,
extendedKeyUsage);
/**
* 证书撤销：已证书扩展的形式，给出了“检查本证书所需要的CRL文件，到上面地方获取” CRL
* DP中的信息是有多个DisributionPoint组成：每个DisributionPoint都存放CRL，
* CA可以在多个地方存放CRL
*
* crl Produce an object suitable for an ASN1OutputStream.
*
* <pre>
* CRLDistPoint ::= SEQUENCE SIZE {1..MAX} OF DistributionPoint
* </pre>
*
* -- CRL distribution points extension OID and syntax
*
* id-ce-cRLDistributionPoints OBJECT IDENTIFIER ::= {id-ce 31}
*
* CRLDistributionPoints ::= SEQUENCE SIZE (1..MAX) OF DistributionPoint
*
* DistributionPoint ::= SEQUENCE { distributionPoint [0]
* DistributionPointName OPTIONAL, reasons [1] ReasonFlags OPTIONAL,
* cRLIssuer [2] GeneralNames OPTIONAL }
*
* DistributionPointName ::= CHOICE { fullName [0] GeneralNames,
* nameRelativeToCRLIssuer [1] RelativeDistinguishedName }
*/
Map<Integer, String> map = new HashMap<Integer, String>();
// map.put(GeneralName.otherName, "cn=otherName");
map.put(GeneralName.rfc822Name, "cn=rfc822Name");
map.put(GeneralName.dNSName, "192.168.30.241");
// map.put(GeneralName.x400Address, "cn=x400Address");
map.put(GeneralName.directoryName, "cn=root");
// map.put(GeneralName.ediPartyName, "cn=ediPartyName");
map.put(GeneralName.uniformResourceIdentifier, "http://certService/crl");
map.put(GeneralName.iPAddress, "192.168.30.24");
map.put(GeneralName.registeredID, "1.1.0.2.1");
DistributionPoint[] dps = new DistributionPoint[map.size()];
int i = 0;
for (int key : map.keySet()) {
GeneralName gn = null;
if (key == GeneralName.otherName || key == GeneralName.ediPartyName) {
continue;
} else if (key == GeneralName.x400Address) {
continue;
} else {
gn = new GeneralName(key, map.get(key));
}
GeneralNames gns = new GeneralNames(gn);
DistributionPointName dpn = new DistributionPointName(gns);
DistributionPoint dp = new DistributionPoint(dpn, null, null);
dps[i] = dp;
i++;
}
CRLDistPoint crlDistPoint = new CRLDistPoint(dps);
extGen.addExtension(X509Extensions.CRLDistributionPoints, true,
crlDistPoint);
/**
* 增量crl Produce an object suitable for an ASN1OutputStream.
*
* <pre>
* CRLDistPoint ::= SEQUENCE SIZE {1..MAX} OF DistributionPoint
* </pre>
*/
extGen.addExtension(X509Extensions.FreshestCRL, false, crlDistPoint);
/**
* 主题备用名称
*/
GeneralName subjectAlternativeName = new GeneralName(
GeneralName.directoryName, map.get(GeneralName.directoryName));
extGen.addExtension(X509Extensions.SubjectAlternativeName, false,
new DERSequence(subjectAlternativeName));
/**
* 颁发者备用名称 ： 放置签发者的各种不同的命名，map 是各种名称形式
*/
GeneralName issuerAlternativeName = new GeneralName(
GeneralName.directoryName, map.get(GeneralName.directoryName));
extGen.addExtension(X509Extensions.IssuerAlternativeName, false,
new DERSequence(issuerAlternativeName));
/**
* 密钥周期 ： 对应私钥的使用期限
*
* <pre>
* PrivateKeyUsagePeriod ::= SEQUENCE {
* notBefore [0] GeneralizedTime OPTIONAL,
* notAfter [1] GeneralizedTime OPTIONAL }
* </pre>
*/
Date notAfter = new Date();
Date notBefter = new Date();
notBefter.setYear(notAfter.getYear() + 10);
DERGeneralizedTime notAfterKey = new DERGeneralizedTime(notAfter);
DERGeneralizedTime notBefterKey = new DERGeneralizedTime(notBefter);
DERTaggedObject dtoNotBefterKey = new DERTaggedObject(false, 0,
notBefterKey);
DERTaggedObject dtoNotAfterKey = new DERTaggedObject(false, 1,
notAfterKey);
ASN1EncodableVector aevPriKeyUsagePeriod = new ASN1EncodableVector();
aevPriKeyUsagePeriod.add(dtoNotBefterKey);
aevPriKeyUsagePeriod.add(dtoNotAfterKey);
PrivateKeyUsagePeriod pkup = PrivateKeyUsagePeriod
.getInstance(new DERSequence(aevPriKeyUsagePeriod));
extGen.addExtension(X509Extensions.PrivateKeyUsagePeriod, false, pkup);
/**
* 策略限制 PolicyConstraints ::= SEQUENCE { requireExplicitPolicy [0]
* SkipCerts OPTIONAL, inhibitPolicyMapping [1] SkipCerts OPTIONAL }
*/
int requireExplicitPolicy = 10; // 表明额外的证书的数量
int inhibitPolicyMapping = 10; // 应用程序支持数量
ASN1EncodableVector pcVector = new ASN1EncodableVector();
pcVector.add(new DERTaggedObject(false, 0, new DERInteger(
requireExplicitPolicy)));
pcVector.add(new DERTaggedObject(false, 1, new DERInteger(
inhibitPolicyMapping)));
extGen.addExtension(X509Extensions.PolicyConstraints, false,
new DERSequence(pcVector));
/**
* 禁止任何策略：
* 扩展项的值是整数N,N表示：在证书路径中，本证书之下的N个证书可带有Any-Policy的证书
* （N+1之下的证书就不能有Any-policy）
*
* id-ce-inhibitAnyPolicy OBJECT IDENTIFIER ::= { id-ce 54 }
*
* InhibitAnyPolicy ::= SkipCerts
*
* SkipCerts ::= INTEGER (0..MAX)
*/
int inhibitAnyPolicy = 10;
extGen.addExtension(X509Extensions.InhibitAnyPolicy, false,
new DERInteger(inhibitAnyPolicy));
/**
* 策略映射 扩展项仅仅存在于交叉证书中，说明了不同CA域之间的CP等级的相互映射关系
*
* PolicyMappings ::= SEQUENCE SIZE (1..MAX) OF SEQUENCE {
* issuerDomainPolicy CertPolicyId, subjectDomainPolicy CertPolicyId }
*/
Hashtable<String, String> policyHashMap = new Hashtable<String, String>();
policyHashMap.put("1.1.1.2.3.1", "1.1.1.2.3.4");
policyHashMap.put("1.1.1.2.3.2", "1.1.1.2.3.5");
PolicyMappings pms = new PolicyMappings(policyHashMap);
extGen.addExtension(X509Extensions.PolicyMappings, false, pms);
/**
* 使用者密钥标示符 SubjectKeyIdentifier ::= KeyIdentifier
*/
extGen.addExtension(
X509Extensions.SubjectKeyIdentifier,
false,
new SubjectKeyIdentifier(SubjectPublicKeyInfo
.getInstance(subjectKey.getEncoded())));
/**
* 颁发者密钥标示符 IssuerKeyIdentifier ::= KeyIdentifier
*/
extGen.addExtension(
X509Extensions.AuthorityKeyIdentifier,
false,
new AuthorityKeyIdentifier(SubjectPublicKeyInfo
.getInstance(subjectKey.getEncoded())));
/**
* 主题目录属性 原则上可以加入与Subject有关信息 因为使用了Atrribute Type的OID的、然后说明相对应的值
*/
// http://asn1.elibel.tm.fr/cgi-bin/oid/display?oid=1.3.6.1.5.5.7.9&action=display
// PKIX personal data gender
String genderOidStr = "1.3.6.1.5.5.7.9.4";
// PKIX personal data dateOfBirth
String dateOfBirthOidStr = "1.3.6.1.5.5.7.9.1";
// 2.5.4.20 - id-at-telephoneNumber
// http://www.alvestrand.no/objectid/2.5.4.html
String streetAddressOidStr = "2.5.4.9";
String telephoneNumberOidStr = "2.5.4.20";
// http://oid.elibel.tm.fr/0.9.2342.19200300.100.1.41
String mobileTelephoneNumberOidStr = "0.9.2342.19200300.100.1.41";
Vector<Attribute> attributes = new Vector<Attribute>();
Attribute genderAttribute = new Attribute(new DERObjectIdentifier(
genderOidStr), new DERSet(new DERPrintableString(
"汉族".getBytes("UTF-8"))));
Attribute dateOfBirthAttribute = new Attribute(new DERObjectIdentifier(
genderOidStr), new DERSet(new DERPrintableString(
"1992-02-20".getBytes("UTF-8"))));
Attribute streetAddressAttribute = new Attribute(
new DERObjectIdentifier(genderOidStr),
new DERSet(new DERPrintableString("北京市大王庄胡同13号"
.getBytes("UTF-8"))));
Attribute telephoneNumberAttribute = new Attribute(
new DERObjectIdentifier(genderOidStr),
new DERSet(new DERPrintableString("010-82961368"
.getBytes("UTF-8"))));
Attribute mobileTelephoneNumberAttribute = new Attribute(
new DERObjectIdentifier(genderOidStr),
new DERSet(new DERPrintableString("13843838438"
.getBytes("UTF-8"))));
attributes.add(genderAttribute);
attributes.add(dateOfBirthAttribute);
attributes.add(streetAddressAttribute);
attributes.add(telephoneNumberAttribute);
attributes.add(mobileTelephoneNumberAttribute);
// 构建主题目录属性
SubjectDirectoryAttributes sda = new SubjectDirectoryAttributes(
attributes);
extGen.addExtension(X509Extensions.SubjectDirectoryAttributes, false,
sda);
/**
* 名称限制 ： 只在ca中出现，并不是出现在用户证书中，名称限制同时对Subject和SubjeectAltertiveName
* 起作用。可以对多种命名进行限制如Email、DNS、X509 DN 等
* 如果发现用户证书中的命名（Subject和SubjeectAltertiveName）与CA证书中的Name
* Constraints违背，就直接认为该证书无效。必须满足Name Constraints 中的多个不同类型命名的限制
* NameConstraints ::= SEQUENCE { permittedSubtrees [0] GeneralSubtrees
* OPTIONAL, excludedSubtrees [1] GeneralSubtrees OPTIONAL }
* GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree
*/
Vector<GeneralSubtree> permitted = new Vector<GeneralSubtree>(); // 允许名称列表
Vector<GeneralSubtree> excluded = new Vector<GeneralSubtree>(); // 限制名称列表
// 添加允许名称
GeneralName permitteedNcGn = new GeneralName(GeneralName.directoryName,
map.get(GeneralName.directoryName));
GeneralSubtree permittedGsNcGn = new GeneralSubtree(permitteedNcGn,
BigInteger.ONE, BigInteger.TEN);
permitted.add(permittedGsNcGn);
// 添加限制名称
GeneralName excludedNcGn = new GeneralName(GeneralName.directoryName,
map.get(GeneralName.directoryName));
GeneralSubtree excludedGsNcGn = new GeneralSubtree(excludedNcGn,
BigInteger.ONE, BigInteger.TEN);
excluded.add(excludedGsNcGn);
NameConstraints nc = new NameConstraints(permitted, excluded);
extGen.addExtension(X509Extensions.NameConstraints, false, nc);
/**
* 机构信息访问 id-pe-authorityInfoAccess OBJECT IDENTIFIER ::= { id-pe 1 }
* AuthorityInfoAccessSyntax ::= SEQUENCE SIZE (1..MAX) OF
* AccessDescription AccessDescription ::= SEQUENCE { accessMethod
* OBJECT IDENTIFIER, accessLocation GeneralName } id-ad OBJECT
* IDENTIFIER ::= { id-pkix 48 } id-ad-caIssuers OBJECT IDENTIFIER ::= {
* id-ad 2 } id-ad-ocsp OBJECT IDENTIFIER ::= { id-ad 1 }
*/
ASN1EncodableVector authorityInnfoAccess = new ASN1EncodableVector();
DERObjectIdentifier id_ad_caIssuers = AccessDescription.id_ad_caIssuers;
DERObjectIdentifier id_ad_ocsp = AccessDescription.id_ad_ocsp;
DERObjectIdentifier id_ad_caRepository = new DERObjectIdentifier(
"1.3.6.1.5.5.7.48.5");
AccessDescription caIssuers = new AccessDescription(id_ad_caIssuers,
new GeneralName(GeneralName.uniformResourceIdentifier,
"http://certService/caIssuers"));
AccessDescription ocsp = new AccessDescription(id_ad_caIssuers,
new GeneralName(GeneralName.uniformResourceIdentifier,
"http://certService/ocsp"));
AccessDescription caRepository = new AccessDescription(id_ad_caIssuers,
new GeneralName(GeneralName.uniformResourceIdentifier,
"http://certService/caRepository"));
authorityInnfoAccess.add(caIssuers);
authorityInnfoAccess.add(ocsp);
authorityInnfoAccess.add(caRepository);
extGen.addExtension(X509Extensions.AuthorityInfoAccess, false,
new DERSequence(authorityInnfoAccess));
/**
*
*/
/**
* 证书策略
*
* <pre>
*
* certificatePolicies ::= SEQUENCE SIZE (1..MAX) OF PolicyInformation
*
* PolicyInformation ::= SEQUENCE {
* policyIdentifier CertPolicyId,
* policyQualifiers SEQUENCE SIZE (1..MAX) OF
* PolicyQualifierInfo OPTIONAL }
*
* CertPolicyId ::= OBJECT IDENTIFIER
*
* PolicyQualifierInfo ::= SEQUENCE {
* policyQualifierId PolicyQualifierId,
* qualifier ANY DEFINED BY policyQualifierId }
*
* PolicyQualifierId ::=
* OBJECT IDENTIFIER (id-qt-cps | id-qt-unotice)
* </pre>
*
* @deprecated use an ASN1Sequence of PolicyInformation
*/
PolicyInformation policyInfo1 = new PolicyInformation(
new DERObjectIdentifier("1.1.1.2.3.1"));
PolicyInformation policyInfo2 = new PolicyInformation(
new DERObjectIdentifier("1.1.1.2.3.2"));
PolicyInformation policyInfo3 = new PolicyInformation(
new DERObjectIdentifier("1.1.1.2.3.3"));
ASN1EncodableVector certificatePolicies = new ASN1EncodableVector();
certificatePolicies.add(policyInfo1);
certificatePolicies.add(policyInfo2);
certificatePolicies.add(policyInfo3);
extGen.addExtension(X509Extensions.CertificatePolicies, true,
new DERSequence(certificatePolicies));
return extGen.generate();
}
/**
* 产生密钥对
* @param alg 签名算法
* @return 密钥对
* @throws Exception
*/
public static KeyPair genKeyPair(String alg) throws Exception {
KeyPairGenerator genKeyPair = KeyPairGenerator.getInstance(alg);
genKeyPair.initialize(2048);
return genKeyPair.genKeyPair();
}
/**
* 签名
* @param alg 签名算法
* @param planText 签名原文
* @param priKey 签名私钥
* @return 签名信息 byte[]
* @throws Exception
*/
public static byte[] sign(String alg, byte[] planText, PrivateKey priKey)
throws Exception {
if (alg == null)
return null;
if ("RSA".equals(alg))
alg = "SHA1withRSA";
else
throw new Exception("不支持的算法。");
Signature sign = Signature.getInstance(alg);
sign.initSign(priKey);
sign.update(planText);
return sign.sign();
}
}
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转载自ldong.iteye.com/blog/1997526
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