支付宝验签的java代码 支付宝验签的java代码在哪里
求ECDSA的Java代码
【方案1】
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package ECDSA;
import com.sun.org.apache.xerces.internal.impl.dv.util.HexBin;
import java.security.*;
import java.security.interfaces.ECPrivateKey;
import java.security.interfaces.ECPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
public class Ecdsa {
private static String src = "hello berber" ;
public static void main(String []args){
jdkECDSA();
}
public static void jdkECDSA(){
// 1.初始化密钥
try{
KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("EC");
keyPairGenerator.initialize(256);
KeyPair keyPair = keyPairGenerator.generateKeyPair() ;
ECPublicKey ecPublicKey = (ECPublicKey)keyPair.getPublic() ;
ECPrivateKey ecPrivateKey = (ECPrivateKey)keyPair.getPrivate() ;
// 执行签名
PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(ecPrivateKey.getEncoded());
KeyFactory keyFactory = KeyFactory.getInstance("EC") ;
PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec) ;
Signature signature = Signature.getInstance("SHA1withECDSA");
signature.initSign(privateKey);
signature.update(src.getBytes());
byte []arr = signature.sign();
System.out.println("jdk ecdsa sign :"+ HexBin.encode(arr));
// 验证签名
X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(ecPublicKey.getEncoded());
keyFactory = KeyFactory.getInstance("EC");
PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
signature = Signature.getInstance("SHA1withECDSA");
signature.initVerify(publicKey);
signature.update(src.getBytes());
boolean bool = signature.verify(arr);
System.out.println("jdk ecdsa verify:"+bool);
}catch(Exception e){
}
}
}
Java数字签名——ECDSA算法
【方案2】
public class MyTest {
/**
* @param args
*/
public static void main(String[] args) {
new MyTest().getSign();
}
void getSign() {
// Get the instance of the Key Generator with "EC" algorithm
try {
KeyPairGenerator g = KeyPairGenerator.getInstance("EC");
ECGenParameterSpec kpgparams = new ECGenParameterSpec("secp256r1");
g.initialize(kpgparams);
KeyPair pair = g.generateKeyPair();
// Instance of signature class with SHA256withECDSA algorithm
Signature ecdsaSign = Signature.getInstance("SHA256withECDSA");
ecdsaSign.initSign(pair.getPrivate());
System.out.println("Private Keys is::" + pair.getPrivate());
System.out.println("Public Keys is::" + pair.getPublic());
String msg = "text ecdsa with sha256";//getSHA256(msg)
ecdsaSign.update((msg + pair.getPrivate().toString())
.getBytes("UTF-8"));
byte[] signature = ecdsaSign.sign();
System.out.println("Signature is::"
+ new BigInteger(1, signature).toString(16));
// Validation
ecdsaSign.initVerify(pair.getPublic());
ecdsaSign.update(signature);
if (ecdsaSign.verify(signature))
System.out.println("valid");
else
System.out.println("invalid!!!!");
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}}
java – 使用secp256r1曲线和SHA256算法生
怎么验证生成的Ecdsa签名是正确的呢,可以看下这篇文章:RSA,ECC,Ecdsa,国密SM2的签名,验签,加密
我用java怎么去实现支付宝接口,没有思路,求大神帮忙,谢谢,
在下面找java demo
一般都是配置几个信息
按照支付方式不同 (担保交易啥的 我忘了 3个好像)
有不不同的传参,看看就行
代码里可以用httpClient做get、post请求
Java如何生成支付宝RSA2签名
对支付宝进行设置再回主页面进行转义,具体步骤如下。
支付宝APP支付(Java后台生成签名具体步骤)
/**
*支付宝支付
* @param orderId 订单编号
* @param actualPay 实际支付金额
* @return
*/
private String getOrderInfoByAliPay(String orderId,float actualPay) {
//回调页面
String ali_call_back_url = propertiesService.ALI_CALL_BACK_URL;
String seller_id = propertiesService.SELLER_ID;//商户编号
String[] parameters={
"service=\"mobile.securitypay.pay\"",//固定值(手机快捷支付)
"partner=\"2088421544444\"",//合作身份者ID(16位)
"_input_charset=\"utf-8\"",
"notify_url=\""+ali_call_back_url+"\"",//通知地址
"out_trade_no=\""+orderId+"\"",//商户内部订单号
"subject=\"测试\"",//测试
"payment_type=\"1\"",//固定值
"seller_id=\""+seller_id+"\"",//账户邮箱
"total_fee=\""+"0.01"+"\"",//支付金额(元)
"body=\"订单说明\"",//订单说明
"it_b_pay=\"30m\""(订单过期时间 30分钟过期无效)
};
String signOrderUrl = signAllString(parameters);
return signOrderUrl;
}
/**
* 支付宝签名
* @param array
* @return
*/
private String signAllString(String [] array){
StringBuffer sb = new StringBuffer("");
for (int i = 0; i array.length; i++) {
if(i==(array.length-1)){
sb.append(array[i]);
}else{
sb.append(array[i]+"");
}
}
System.out.println(sb.toString());
String sign = "";
try {
sign = URLEncoder.encode(RSA.sign(sb.toString(), AlipayConfig.private_key, "utf-8"), "utf-8");//private_key私钥
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
sb.append("sign=\""+sign+"\"");
sb.append("sign_type=\"RSA\"");
return sb.toString();
}
package com.alipay.sign;
import javax.crypto.Cipher;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
public class RSA{
public static final String SIGN_ALGORITHMS = "SHA1WithRSA";
/**
* RSA签名
* @param content 待签名数据
* @param privateKey 商户私钥
* @param input_charset 编码格式
* @return 签名值
*/
public static String sign(String content, String privateKey, String input_charset)
{
try
{
byte[] decode = Base64.decode(privateKey);
PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec(decode );
KeyFactory keyf= KeyFactory.getInstance("RSA");
PrivateKey priKey= keyf.generatePrivate(priPKCS8);
java.security.Signature signature = java.security.Signature.getInstance(SIGN_ALGORITHMS);
signature.initSign(priKey);
signature.update( content.getBytes(input_charset) );
byte[] signed = signature.sign();
return Base64.encode(signed);
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
/**
* RSA验签名检查
* @param content 待签名数据
* @param sign 签名值
* @param ali_public_key 支付宝公钥
* @param input_charset 编码格式
* @return 布尔值
*/
public static boolean verify(String content, String sign, String ali_public_key, String input_charset)
{
try
{
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
byte[] encodedKey = Base64.decode(ali_public_key);
PublicKey pubKey = keyFactory.generatePublic(new X509EncodedKeySpec(encodedKey));
java.security.Signature signature = java.security.Signature
.getInstance(SIGN_ALGORITHMS);
signature.initVerify(pubKey);
signature.update( content.getBytes(input_charset) );
boolean bverify = signature.verify( Base64.decode(sign) );
return bverify;
}
catch (Exception e)
{
e.printStackTrace();
}
return false;
}
/**
* 解密
* @param content 密文
* @param private_key 商户私钥
* @param input_charset 编码格式
* @return 解密后的字符串
*/
public static String decrypt(String content, String private_key, String input_charset) throws Exception {
PrivateKey prikey = getPrivateKey(private_key);
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, prikey);
InputStream ins = new ByteArrayInputStream(Base64.decode(content));
ByteArrayOutputStream writer = new ByteArrayOutputStream();
//rsa解密的字节大小最多是128,将需要解密的内容,按128位拆开解密
byte[] buf = new byte[128];
int bufl;
while ((bufl = ins.read(buf)) != -1) {
byte[] block = null;
if (buf.length == bufl) {
block = buf;
} else {
block = new byte[bufl];
for (int i = 0; i bufl; i++) {
block[i] = buf[i];
}
}
writer.write(cipher.doFinal(block));
}
return new String(writer.toByteArray(), input_charset);
}
/**
* 得到私钥
* @param key 密钥字符串(经过base64编码)
* @throws Exception
*/
public static PrivateKey getPrivateKey(String key) throws Exception {
byte[] keyBytes;
keyBytes = Base64.decode(key);
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
PrivateKey privateKey = keyFactory.generatePrivate(keySpec);
return privateKey;
}
}
java 支付宝支付接口 的 NotifyUrl 应该怎么返回success 官网上说打印输出 我用了println, 后来用return
public String alibaPayCallBackNotice(HttpServletRequest request, HttpServletResponse response, String outTradeNo) {
//获取支付宝POST过来反馈信息
MapString,String params = new HashMapString,String();
Map?, ? requestParams = request.getParameterMap();
for (Iterator? iter = requestParams.keySet().iterator(); iter.hasNext();) {
String name = (String) iter.next();
String[] values = (String[]) requestParams.get(name);
String valueStr = "";
for (int i = 0; i values.length; i++) {
valueStr = (i == values.length - 1) ? valueStr + values[i]
: valueStr + values[i] + ",";
}
//乱码解决,这段代码在出现乱码时使用。
//valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
params.put(name, valueStr);
}
//切记alipaypublickey是支付宝的公钥,请去open.alipay.com对应应用下查看。
//boolean AlipaySignature.rsaCheckV1(MapString, String params, String publicKey, String charset, String sign_type)
try {
boolean flag = AlipaySignature.rsaCheckV1(params, App.AliBaPay.ALIPAY_PUBLIC_KEY, "UTF-8","RSA2");
if (flag) {
if ("TRADE_SUCCESS".equals(params.get("trade_status")) || "TRADE_FINISHED".equals(params.get("trade_status"))) {
// 支付成功,录入订单数据
if (userMoneyService.userUpdateWaterAccountInfo(Integer.valueOf(outTradeNo))) {
return "success";
}
}
}
} catch (Exception e) {
}
return "failure";
}
整个接口返回的数据,处理为字符串返回即可,不需要跳转,也不能跳转,要在你的resposne中body数据
记得采纳
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