package com.ykx.transfer.contorller;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import javax.crypto.Cipher;
import org.apache.commons.codec.binary.Base64;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import net.sf.json.JSONObject;
public class RSADemo {
public static final String ALGORITHM = "RSA";
public static final String SIGNATURE_ALGORITHM="MD5withRSA";
private static String publickey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDazJE8JgkL4hXA5pJwuBu9skcCrA6cQBGws3G0rmIp/K51sqGVCradW8ait03/5/sUKoHDF2tu89dcuhTYBxgidMDmyBlAznU8WRt9FrgCtlhq4evcq+ZeUAPyXtvBMU18gNJq0EctJbszjTBkGvHuEuJes5lPs3nT+eHG1edwfQIDAQAB";
private static String privatekey = "MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBANrMkTwmCQviFcDmknC4G72yRwKsDpxAEbCzcbSuYin8rnWyoZUKtp1bxqK3Tf/n+xQqgcMXa27z11y6FNgHGCJ0wObIGUDOdTxZG30WuAK2WGrh69yr5l5QA/Je28ExTXyA0mrQRy0luzONMGQa8e4S4l6zmU+zedP54cbV53B9AgMBAAECgYA/FCby3kxRXrbCzDZ/xLRKtjD+tjfoGBiBhtpLKtMmI7DwQbWP0GzhZOoZUxtroaejIrYSVpgkfqwiEYuc1D7Cd8N8ucXxG+UJE/lJoI9mlou5UAvEhJpjiWgKJDKkuRai3BfTBWDTCvDFrODPPeFaOGkIFgEFb+q2HoGOHjoOwQJBAPHlBHUz2M93Us2TKisTX+YrpZkyhEL6Z/U6EBcdVBhbnM9VFFT8g+qxQoFhsxg6xQe6I7vveRTR1cBDEqGzUkkCQQDnjsg1+RFdPRfJ4Z55KjdeP5Q2M3iLMGlPOSgcKKPXE7GI3A8rRY+STHXOgP+PWVESRGEG4LhyREwJHjGzRCyVAkEAq++kLoaOylC/W34KUBnyZVGK4IymtFD2ybjerP9cwf+EQ17vF8VxIsWiRwKh4UwMtoRZWAFMqD7KV2GVgbhLeQJAHEw1qWrjtVpG8vPwkuwW0hzA9xK5M4FaDUV14mMRCrKsaoZCEE6y6fUQHIllMdZ/ctUKanXB9KzmAeM/vaGiNQJAGk7xrqDAETApzZhwWmSxNzOJhVcOvo9URXwbwiuD/H5jsxCXMbIog5t0uiGhDN4Aqv5JeGODgGXbWcS598J8/A==";
public void Test() throws Exception {}
public static PublicKey getPublicKey(String key) throws Exception {
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(
Base64.decodeBase64(key));
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
PublicKey publicKey = keyFactory.generatePublic(keySpec);
return publicKey;
}
public static PrivateKey getPrivateKey(String key)
throws NoSuchAlgorithmException, InvalidKeySpecException {
PKCS8EncodedKeySpec privatekeySpec = new PKCS8EncodedKeySpec(
Base64.decodeBase64(key));
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
return keyFactory.generatePrivate(privatekeySpec);
}
public static byte[] encrypt(String text, PublicKey key) {
byte[] cipherText = null;
try {
final Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, key);
cipherText = cipher.doFinal(text.getBytes());
} catch (Exception e) {
e.printStackTrace();
}
return cipherText;
}
/**
* RSA算法使用公钥校验数字签名
*
* @param data 参与签名的明文字符串
* @param key RSA公钥字符串
* @param sign RSA签名得到的经过Base64编码的字符串
* @return true--验签通过,false--验签未通过
*/
public static boolean buildRSAverifyByPublicKey(String data, String key, String sign) {
try {
//通过X509编码的Key指令获得公钥对象
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(java.util.Base64.getDecoder().decode(key));
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
PublicKey publicKey = keyFactory.generatePublic(x509KeySpec);
Signature signature = Signature.getInstance("MD5withRSA");
signature.initVerify(publicKey);
signature.update(data.getBytes("utf-8"));
return signature.verify(java.util.Base64.getDecoder().decode(sign));
} catch (Exception e) {
throw new RuntimeException("验签字符串[" + data + "]时遇到异常", e);
}
}
public static void main(String[] args) throws Exception{
HttpPost post = new HttpPost("http://127.0.0.1:8081/transfer/placeorder");
//获取securityKey
PublicKey publicKey = getPublicKey(publickey);
PrivateKey privateKey = getPrivateKey(privatekey);
//拼装查询条件xxx=xxx&yyy=yyy&zzz=zzz
String param = "startStationCode=8001qj&pathPoint=綦江";
//签名
Signature sig = Signature.getInstance(SIGNATURE_ALGORITHM);
sig.initSign(privateKey);
sig.update(param.getBytes());
byte[] sign = sig.sign();
String signature = Base64.encodeBase64String(sign);
//加密
byte[] encrypt = encrypt(param, publicKey);
String encodeBase64String = Base64.encodeBase64String(encrypt);
//拼装json格式请求参数
JSONObject json = new JSONObject();
json.put("data", encodeBase64String);
json.put("signature",signature);
StringEntity entity = new StringEntity(json.toString(),"UTF-8");
//设置content编码及类型
entity.setContentEncoding("UTF-8");
entity.setContentType("application/json");
post.setEntity(entity);
//模拟http post请求发送信息
HttpClient client = HttpClients.createDefault();
HttpResponse response = client.execute(post);
System.out.println(response.getStatusLine().getStatusCode());
if(response.getStatusLine().getStatusCode() ==200){
HttpEntity entity_r = response.getEntity();
String personal = EntityUtils.toString(entity_r);
System.out.println(personal);
}
}
}
