本地证书实现数字信封加解密demo-java

提供获取加密证书接口、数字信封加密以及数字信封解密接口源码，IDEA编译，测试数据符合标准openssl，测试的时候要注意证书和私钥的存放路径

/*  shaw 2018-12-17
* 数字信封加解密
*   证书（1代表加密证书，2代表起签名证书）
*  个人主页：https://user.qzone.qq.com/1939484341/infocenter
*/
package psic;

import org.bouncycastle.jce.provider.BouncyCastleProvider;
import server.ClientConf;
import server.GetEncPvk;
import server.JPkcs7;
import server.Util;
import sun.misc.base64Encoder;

import javax.crypto.Cipher;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.security.Security;;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.HashMap;
import java.util.Map;

public class SHAWApp {

    private CertificateFactory cf = null;
    private static final Map algMap = new HashMap（）;

    public SHAWApp（） {
        try {
            Security.addProvider（new BouncyCastleProvider（））;
            this.cf = CertificateFactory.getInstance（“X.509“ “BC“）;
            algMap.put（32772 “sha1withrsa“）;
            algMap.put（32780 “sha256withrsa“）;
            algMap.put（32771 “md5withrsa“）;
            System.out.println（“SHAWApp初始化成功“）;
        } catch （Exception var） {
            System.out.println（“SHAWApp初始化异常：“ + var.getMessage（））;
        }

    }

    //获取证书
    public String ShawGetCert（String keyLabel int certType） {
        String result = ““;
        object[] objs = new object[]{certType};
        if （!Util.paramCheck（objs）） {
            System.out.println（“必要的入参不能为空或null“）;
            return result;
        } else {
            String certPath = ““;
            String certTypePath = ““;
            try {
                ClientConf conf = new ClientConf（）;
                String configPath = conf.CONFIG_PATH;
                if （keyLabel == null || ““.equals（keyLabel）） {
                    keyLabel = conf.getParamValue（“KeyLabel“）;
                }
                certPath = configPath.substring（0 configPath.indexOf（“Client.conf“）） + keyLabel + System.getProperty（“file.separator“）;
            } catch （Exception var） {
                System.out.println（“读取配置文件失败：“ + var.getMessage（））;
                return result;
            }
            try {
                String certTypeString = ““;
                if （certType == 1） {
                    certTypeString = “-CertEx.cer“;
                } else {
                    if （certType != 2） {
                        throw new Exception（“参数有误“）;
                    }
                    certTypeString = “-CertSig.cer“;
                }
                certTypePath = certPath + keyLabel + certTypeString;
                FileInputStream fileInputStream = new FileInputStream（certTypePath）;
                byte[] b = new byte[fileInputStream.available（）];
                fileInputStream.read（b）;
                fileInputStream.close（）;
                result = （new base64Encoder（））.encode（b）;
            } catch （Exception var） {
                System.out.println（“获取证书失败：“ + var.getMessage（））;
            }
            return result;
        }
    }

  

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\.idea\
     文件         449  2018-12-18 13:51  SealEnvelope-OpenEnvelope-demo\.idea\compiler.xml
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\.idea\copyright\
     文件          74  2018-12-18 13:51  SealEnvelope-OpenEnvelope-demo\.idea\copyright\profiles_settings.xml
     文件         340  2018-12-18 13:51  SealEnvelope-OpenEnvelope-demo\.idea\deployment.xml
     文件         496  2018-12-18 14:58  SealEnvelope-OpenEnvelope-demo\.idea\encodings.xml
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\.idea\inspectionProfiles\
     文件         173  2018-12-18 13:51  SealEnvelope-OpenEnvelope-demo\.idea\inspectionProfiles\Project_Default.xml
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\.idea\libraries\
     文件         316  2018-12-18 15:01  SealEnvelope-OpenEnvelope-demo\.idea\libraries\bcprov_jdk15on_1_59.xml
     文件         273  2018-12-18 13:51  SealEnvelope-OpenEnvelope-demo\.idea\misc.xml
     文件         248  2018-12-18 13:51  SealEnvelope-OpenEnvelope-demo\.idea\modules.xml
     文件       35119  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\.idea\workspace.xml
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\out\
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\out\production\
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\out\production\test\
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\out\production\test\lib\
     文件      792825  2018-12-18 15:02  SealEnvelope-OpenEnvelope-demo\out\production\test\lib\bcpkix-jdk15on-1.59.jar
     文件     4092400  2018-12-18 14:40  SealEnvelope-OpenEnvelope-demo\out\production\test\lib\bcprov-jdk15on-1.59.jar
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\out\production\test\psic\
     文件        6613  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\out\production\test\psic\SHAWApp.class
     目录           0  2018-12-18 15:04  SealEnvelope-OpenEnvelope-demo\out\production\test\server\
     文件        1669  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\out\production\test\server\base64.class
     文件        2115  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\out\production\test\server\ClientConf.class
     文件        6073  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\out\production\test\server\Envelope.class
     文件        2375  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\out\production\test\server\GetEncPvk.class
     文件        9897  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\out\production\test\server\JPkcs7.class
     文件        1677  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\out\production\test\server\Random.class
     文件        6930  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\out\production\test\server\Rsa.class
     文件        1959  2018-12-18 15:03  SealEnvelope-OpenEnvelope-demo\out\production\test\server\ThrDES.class
............此处省略18个文件信息