Key Tool Gui 1.7

/**

*

Title: Light Weight APIs for crypto

*

Description: 一个上海CA证书(根证书和用户证书)进行处理的例子

*

Copyright: Copyright (c) 2003

*

Company: 中国信息安全组织(CISO)

* @author rainbow(webmaster)哈哈 拿老大的东西来添一添.ciso中有关于PKI的更多资料，欢迎你去看看呢

*希望能够加入我们！

* @version 1.0.2003.0620

*/

import java.io.*;

import org.bouncycastle.asn1.*;

import org.bouncycastle.asn1.util.*;

import org.bouncycastle.asn1.x509.*;

import org.bouncycastle.util.encoders.*;

public class CertManager {

String eoid[][]={

{new String("Subject Key Identifier"), new String("2.5.29.14")},

{new String("Key Usage"),           new String("2.5.29.15")},

{new String("Private Key Usage Period"),new String("2.5.29.16")},

{new String("Subject Alternative Name"),new String("2.5.29.17")},

{new String("Issuer Alternative Name"), new String("2.5.29.18")},

{new String("Basic Constraints"),     new String("2.5.29.19")},

{new String("CRL Number"),         new String("2.5.29.20")},

{new String("Reason code"),         new String("2.5.29.21")},

{new String("Hold Instruction Code"),   new String("2.5.29.23")},

{new String("Invalidity Date"),       new String("2.5.29.24")},

{new String("Delta CRL indicator"),   new String("2.5.29.27")},

{new String("Issuing Distribution Point"),new String("2.5.29.28")},

{new String("Certificate Issuer"),     new String("2.5.29.29")},

{new String("Name Constraints"),     new String("2.5.29.30")},

{new String("CRL Distribution Points"), new String("2.5.29.31")},

{new String("Certificate Policies"),   new String("2.5.29.32")},

{new String("Policy Mappings"),       new String("2.5.29.33")},

{new String("Authority Key Identifier"),new String("2.5.29.35")},

{new String("Policy Constraints"),     new String("2.5.29.36")},

{new String("Extended Key Usage"),     new String("2.5.29.37")}};

byte buf[];

public CertManager() {

int fLength=0;

try {

FileInputStream fis=new FileInputStream("..\\mycert\\ca.der");

fLength=fis.available();

buf=new byte[fLength];

fis.read(buf,0,fLength);

}

catch (Exception ex) {

System.out.println("读证书文件出错!");

return;

}

}

public byte[] getExtensionBytes(String oid,X509Extensions exts)

{

if (exts != null)

{

X509Extension   ext = exts.getExtension(new DERObjectIdentifier(oid));

if (ext != null)

{

return ext.getValue().getOctets();

}

}

return null;

}

public void getCert()

{

ByteArrayInputStream   bIn;

DERInputStream       dIn;

String             dump = "";

try

{

bIn = new ByteArrayInputStream(buf);

dIn = new DERInputStream(bIn);

ASN1Sequence     seq = (ASN1Sequence)dIn.readObject();

//dump = DERDump.dumpAsString(seq);

// 调试输出语句

//System.out.println(dump);

// 证书的基本信息

System.out.println("<<=============证书的基本信息===============>>");

X509CertificateStructure   cert = new X509CertificateStructure(seq);

System.out.println("证书版本:\t"+cert.getVersion());

System.out.println("序列号:\t\t"+cert.getSerialNumber().getValue().toString(16));

System.out.println("算法标识:\t"+cert.getSignatureAlgorithm().getObjectId().getId());

System.out.println("签发者:\t\t"+cert.getIssuer());

System.out.println("开始时间:\t"+cert.getStartDate().getTime());

System.out.println("结束时间:\t"+cert.getEndDate().getTime());

System.out.println("主体名:\t\t"+cert.getSubject());

System.out.print("签名值:\t");

DERBitString signature=cert.getSignature();

String strSign=new String(Hex.encode(signature.getBytes()));

System.out.println(strSign);

System.out.println("主体公钥:\t");

SubjectPublicKeyInfo pukinfo=cert.getSubjectPublicKeyInfo();

System.out.println("\t标识符:\t"+pukinfo.getAlgorithmId().getObjectId().getId());

byte[] byPuk=pukinfo.getPublicKeyData().getBytes();

String strPuk=new String(Hex.encode(byPuk));

System.out.println("\t公钥值:\t"+strPuk);

// 证书的扩展信息

System.out.println("<<===========证书的扩展信息==============>>");

X509Extensions ext=cert.getTBSCertificate().getExtensions();

// 15 --key usage     19 ---basic constrains

// 31-- crl point     32 ---certificate policy

getKeyUsage(ext);

getBasicConstrains(ext);

getCRLPoint(ext);

getCertPolicy(ext);

}

catch (Exception e)

{

e.printStackTrace();

return ;

}

}

// 取密钥的使用

public void getKeyUsage(X509Extensions ext)

{

DERObjectIdentifier derOid = new DERObjectIdentifier("2.5.29.15");

X509Extension item = null;

boolean isCritical;

ASN1OctetString value;

try {

item=ext.getExtension(derOid);

isCritical=item.isCritical();

value=item.getValue();

}

catch (Exception ex) {

return;

}

System.out.println(new String(Hex.encode(value.getOctets())));

}

// 取基本限制

public void getBasicConstrains(X509Extensions ext)

{

byte[] bytes = getExtensionBytes("2.5.29.19",ext);

if (bytes != null)

{

try

{

DERInputStream dIn = new DERInputStream(new ByteArrayInputStream(bytes));

ASN1Sequence   seq = (ASN1Sequence)dIn.readObject();

if (seq.size() == 2)

{

if (((DERBoolean)seq.getObjectAt(0)).isTrue())

{

int pathlen=((DERInteger)seq.getObjectAt(1)).getValue().intValue();

System.out.println("是CA证书\t"+"max path len="+pathlen);

}

else

{

System.out.println("不是ca证书!");

}

}

else if (seq.size() == 1)

{

if (seq.getObjectAt(0) instanceof DERBoolean)

{

if (((DERBoolean)seq.getObjectAt(0)).isTrue())

{

System.out.println(Integer.MAX_VALUE);

}

}

}

}

catch (Exception e)

{

throw new RuntimeException("error processing key usage extension");

}

}

}

// 取crl分布点

public void getCRLPoint(X509Extensions ext)

{

byte[] byContent = getExtensionBytes("2.5.29.31",ext);

if (byContent != null)

{

try

{

DERInputStream dIn = new DERInputStream(new ByteArrayInputStream(byContent));

ASN1Sequence   seq = (ASN1Sequence)dIn.readObject();

int dpCount=seq.size();

for(int i=0;i

{

// 第一个分布点(DistributionPoint)

ASN1Sequence point1=(ASN1Sequence)seq.getObjectAt(i);

DERObject tobj=(DERTaggedObject)point1.getObjectAt(0);

System.out.println("CRL分布点"+(i+1)+":");

while(tobj instanceof DERTaggedObject&&!((DERTaggedObject)tobj).isEmpty())

{

System.out.println("\ttagNo:"+((DERTaggedObject)tobj).getTagNo());

if(tobj instanceof DERTaggedObject)

tobj=((DERTaggedObject)tobj).getObject();

}

DEROctetString os=(DEROctetString)tobj.getDERObject();

String str=new String(os.getOctets());

System.out.println("\t"+str);

}

}

catch (Exception e)

{

System.out.println("crl分布点处理出错了!");

}

}

}

// 取证书策略

public void getCertPolicy(X509Extensions ext)

{

byte[] byContent = getExtensionBytes("2.5.29.32",ext);

if (byContent != null)

{

try

{

DERInputStream dIn = new DERInputStream(new ByteArrayInputStream(byContent));

ASN1Sequence   seq = (ASN1Sequence)dIn.readObject();

//String dump = DERDump.dumpAsString(seq);

// 调试输出语句

//System.out.println("证书策略:"+dump);

for(int i=0;i

{

getPolicyInfo((ASN1Sequence)seq.getObjectAt(i));

}

}

catch(Exception e)

{

e.printStackTrace();

}

}

}

private void getPolicyInfo(ASN1Sequence seq)

{

if(seq.size()==2)

{

DERObjectIdentifier objID=(DERObjectIdentifier)seq.getObjectAt(0);

System.out.println("证书策略标识:"+objID.getId());

ASN1Sequence seqQualifier=(ASN1Sequence)seq.getObjectAt(1);

for(int i=0;i

getPolicyQualifierInfo((ASN1Sequence)seqQualifier.getObjectAt(i));

}

else

System.out.println("解析策略声明时出错!");

}

private void getPolicyQualifierInfo(ASN1Sequence seq)

{

if(seq.size()==2)

{

DERObjectIdentifier objID=(DERObjectIdentifier)seq.getObjectAt(0);

System.out.println("策略声明标识:"+objID.getId());

DERIA5String ia5=(DERIA5String)seq.getObjectAt(1);

System.out.println("声明内容:"+ia5.getString());

}

}

public static void main(String[] args) {

CertManager cm = new CertManager();

cm.getCert();

}

}