.net加密SHA256WithRSA兼容java

net加密SHA256WithRSA兼容java"/>

.net加密SHA256WithRSA兼容java

 ｃ＃版本

using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Security;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;namespace PhoneMobileSub
{class SHA256WithRSA{public static string RSAPrivateKeyJava2DotNet(string privateKey){RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(privateKey));return string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent><P>{2}</P><Q>{3}</Q><DP>{4}</DP><DQ>{5}</DQ><InverseQ>{6}</InverseQ><D>{7}</D></RSAKeyValue>",Convert.ToBase64String(privateKeyParam.Modulus.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.PublicExponent.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.P.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.Q.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.DP.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.DQ.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.QInv.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.Exponent.ToByteArrayUnsigned()));}/// <summary>/// 调用方式 getSign("明文","私钥");/// </summary>/// <param name="contentForSign"></param>/// <param name="privateKey"></param>/// <returns></returns>public static string getSign(string contentForSign, string privateKey){//转换成适用于.Net的秘钥var netKey = RSAPrivateKeyJava2DotNet(privateKey);var rsa = new RSACryptoServiceProvider();rsa.FromXmlString(netKey);//创建一个空对象var rsaClear = new RSACryptoServiceProvider();var paras = rsa.ExportParameters(true);rsaClear.ImportParameters(paras);//签名返回using (var sha256 = new SHA256CryptoServiceProvider()){var signData = rsa.SignData(Encoding.UTF8.GetBytes(contentForSign), sha256);return Convert.ToBase64String(signData);}}}
}

ｊａｖａ　调用实例看最下面

package com.ry.utile;
import java.io.ByteArrayOutputStream;
import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import org.apachemons.codec.binary.Base64;
import java.util.HashMap;
import java.util.Map;
import javax.crypto.Cipher;
import org.apachemons.io.IOUtils;
/**
* 描述  加解密工具类
*
* @author renyue
* @date 2021/10/24
* @version 1.0
*/
public final class EncryptDecryptUtil {public static final String CHARSET = "UTF-8";//密钥算法public static final String ALGORITHM_RSA = "RSA";//RSA 签名算法public static final String ALGORITHM_RSA_SIGN = "SHA256WithRSA";public static final int ALGORITHM_RSA_PRIVATE_KEY_LENGTH = 2048;private EncryptDecryptUtil() {}/*** 初始化RSA算法密钥对** @param keysize RSA1024已经不安全了,建议2048* @return 经过Base64编码后的公私钥Map, 键名分别为publicKey和privateKey*/public static Map<String, String> initRSAKey(int keysize) {if (keysize != ALGORITHM_RSA_PRIVATE_KEY_LENGTH) {throw new IllegalArgumentException("RSA1024已经不安全了,请使用" + ALGORITHM_RSA_PRIVATE_KEY_LENGTH + "初始化RSA密钥对");}//为RSA算法创建一个KeyPairGenerator对象KeyPairGenerator kpg;try {kpg = KeyPairGenerator.getInstance(ALGORITHM_RSA);} catch (NoSuchAlgorithmException e) {throw new IllegalArgumentException("No such algorithm-->[" + ALGORITHM_RSA + "]");}//初始化KeyPairGenerator对象,不要被initialize()源码表面上欺骗,其实这里声明的size是生效的kpg.initialize(ALGORITHM_RSA_PRIVATE_KEY_LENGTH);//生成密匙对KeyPair keyPair = kpg.generateKeyPair();//得到公钥Key publicKey = keyPair.getPublic();String publicKeyStr = Base64.encodeBase64String(publicKey.getEncoded());//得到私钥Key privateKey = keyPair.getPrivate();String privateKeyStr = Base64.encodeBase64String(privateKey.getEncoded());Map<String, String> keyPairMap = new HashMap<String, String>();keyPairMap.put("publicKey", publicKeyStr);keyPairMap.put("privateKey", privateKeyStr);return keyPairMap;}/*** RSA算法公钥加密数据** @param data 待加密的明文字符串* @param key  RSA公钥字符串* @return RSA公钥加密后的经过Base64编码的密文字符串*/public static String buildRSAEncryptByPublicKey(String data, String key) {try {//通过X509编码的Key指令获得公钥对象X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(Base64.decodeBase64(key));KeyFactory keyFactory = KeyFactory.getInstance(ALGORITHM_RSA);Key publicKey = keyFactory.generatePublic(x509KeySpec);Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE, publicKey);return Base64.encodeBase64String(rsaSplitCodec(cipher, Cipher.ENCRYPT_MODE, data.getBytes(CHARSET)));} catch (Exception e) {throw new RuntimeException("加密字符串[" + data + "]时遇到异常", e);}}/*** RSA算法公钥解密数据** @param data 待解密的经过Base64编码的密文字符串* @param key  RSA公钥字符串* @return RSA公钥解密后的明文字符串*/public static String buildRSADecryptByPublicKey(String data, String key) {try {//通过X509编码的Key指令获得公钥对象X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(Base64.decodeBase64(key));KeyFactory keyFactory = KeyFactory.getInstance(ALGORITHM_RSA);Key publicKey = keyFactory.generatePublic(x509KeySpec);Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE, publicKey);return new String(rsaSplitCodec(cipher, Cipher.DECRYPT_MODE, Base64.decodeBase64(data)), CHARSET);} catch (Exception e) {throw new RuntimeException("解密字符串[" + data + "]时遇到异常", e);}}/*** RSA算法私钥加密数据** @param data 待加密的明文字符串* @param key  RSA私钥字符串* @return RSA私钥加密后的经过Base64编码的密文字符串*/public static String buildRSAEncryptByPrivateKey(String data, String key) {try {//通过PKCS#8编码的Key指令获得私钥对象PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(Base64.decodeBase64(key));KeyFactory keyFactory = KeyFactory.getInstance(ALGORITHM_RSA);Key privateKey = keyFactory.generatePrivate(pkcs8KeySpec);Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE, privateKey);return Base64.encodeBase64String(rsaSplitCodec(cipher, Cipher.ENCRYPT_MODE, data.getBytes(CHARSET)));} catch (Exception e) {throw new RuntimeException("加密字符串[" + data + "]时遇到异常", e);}}/*** RSA算法私钥解密数据* @param data 待解密的经过Base64编码的密文字符串* @param key  RSA私钥字符串* @return RSA私钥解密后的明文字符串*/public static String buildRSADecryptByPrivateKey(String data, String key) {try {//通过PKCS#8编码的Key指令获得私钥对象PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(Base64.decodeBase64(key));KeyFactory keyFactory = KeyFactory.getInstance(ALGORITHM_RSA);Key privateKey = keyFactory.generatePrivate(pkcs8KeySpec);Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE, privateKey);return new String(rsaSplitCodec(cipher, Cipher.DECRYPT_MODE, Base64.decodeBase64(data)), CHARSET);} catch (Exception e) {throw new RuntimeException("解密字符串[" + data + "]时遇到异常", e);}}/*** RSA算法使用私钥对数据生成数字签名** @param data 待签名的明文字符串* @param key  RSA私钥字符串* @return RSA私钥签名后的经过Base64编码的字符串*/public static String buildRSASignByPrivateKey(String data, String key) {try {//通过PKCS#8编码的Key指令获得私钥对象PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(Base64.decodeBase64(key));KeyFactory keyFactory = KeyFactory.getInstance(ALGORITHM_RSA);PrivateKey privateKey = keyFactory.generatePrivate(pkcs8KeySpec);Signature signature = Signature.getInstance(ALGORITHM_RSA_SIGN);signature.initSign(privateKey);signature.update(data.getBytes(CHARSET));return Base64.encodeBase64String(signature.sign());} catch (Exception e) {throw new RuntimeException("签名字符串[" + data + "]时遇到异常", e);}}/*** 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(Base64.decodeBase64(key));KeyFactory keyFactory = KeyFactory.getInstance(ALGORITHM_RSA);PublicKey publicKey = keyFactory.generatePublic(x509KeySpec);Signature signature = Signature.getInstance(ALGORITHM_RSA_SIGN);signature.initVerify(publicKey);signature.update(data.getBytes(CHARSET));return signature.verify(Base64.decodeBase64(sign));} catch (Exception e) {throw new RuntimeException("验签字符串[" + data + "]时遇到异常", e);}}/*** RSA算法分段加解密数据** @param cipher 初始化了加解密工作模式后的javax.crypto.Cipher对象* @param opmode 加解密模式,值为javax.crypto.Cipher.ENCRYPT_MODE/DECRYPT_MODE* @return 加密或解密后得到的数据的字节数组*/private static byte[] rsaSplitCodec(Cipher cipher, int opmode, byte[] datas) {int maxBlock = 0;if (opmode == Cipher.DECRYPT_MODE) {maxBlock = ALGORITHM_RSA_PRIVATE_KEY_LENGTH / 8;} else {maxBlock = ALGORITHM_RSA_PRIVATE_KEY_LENGTH / 8 - 11;}ByteArrayOutputStream out = new ByteArrayOutputStream();int offSet = 0;byte[] buff;int i = 0;try {while (datas.length > offSet) {if (datas.length - offSet > maxBlock) {buff = cipher.doFinal(datas, offSet, maxBlock);} else {buff = cipher.doFinal(datas, offSet, datas.length - offSet);}out.write(buff, 0, buff.length);i++;offSet = i * maxBlock;}} catch (Exception e) {throw new RuntimeException("加解密阀值为[" + maxBlock + "]的数据时发生异常", e);}byte[] resultDatas = out.toByteArray();IOUtils.closeQuietly(out);return resultDatas;}public static void main(String[] args) {String privateKey="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";String publicKey="MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAkW7K2uBC1BoIRfCrs5N+Iljqst9g5vmhHwSju+cFiv30AW7SaHsERv/OOJAPAsCR6Dg24cxmKzWr2XDfwtwbmY9nX763kwpgH2IekBdn1YQ1bj7dRwTz1Pi1HCRGZg/OHk/BuoDUHg2iocLHJ+k33vHxMllCPwU1FN6RLST1inZyo7VuwKPd7TXNpWN3hbPT2Gj0zj0zpyFYD47H70zKws6Ln14Jz79WOgLV0jO5EDU3io8QxU7EABG8StarRHiZGVqkXDHkWQ+gqwVrkzhF34rgQO6Lx5qpRCns1oDlFQZq/crmAtGWNmRJy/L8jrWvpCp/HBHRTiP/wWIbT9DYlQIDAQAB";System.out.println("签名:"+buildRSASignByPrivateKey("app_id=2021022440343627&format=json&method=youxi9.recharge.qb&nonce_str=79558×tamp=1614213444581&version=1.0", privateKey));System.out.println("解密：" + buildRSADecryptByPrivateKey("bHd6wDoxlAB+QFRDWmDItjCTK2GFutCZ2Z3m+N+Q404o34RCGyTMg0MBT937lA42DL8xTpa7LVtw+hhtl2BZj2qL5W9T9Do59CL0KHSJHSe5bf0kvs81mOILwk4w6JU75Um7Sz7/NRToIj1vkEF48Ju1sUuZdjdoKiW5b9H15mIowUNMd8o15/S1LzvayAP9ZBtEB8ygHqjGKvagxXGuR+gPwgXNEiMJAOKStRKzXV//BKjMcHD5yjxQq9EWt+CjVCumLXvSJJ/0EVxoAwPJlUYFcY64v9xpYw6pqOxoDFALiHdE9PFLr2R3uWHySiX8gsYXB117hRG7pI7B+hs7/w==",privateKey));System.out.println("校验:"+buildRSAverifyByPublicKey("app_id=2021022440343627&format=json&method=youxi9.recharge.qb&nonce_str=91077×tamp=1614157565009&version=1.0",publicKey,"bTkVA/ww/YHTwWKYRmA4k5pYva+4NXRUcRkPIvx4zjfZse8Ympgl2Lfbx73nRFOqFCgJM0S/I0NbLkiPmGpzSQRilMYZM0fs5EHC3eUCslseW6gproJyURxtaaXwmtaxm3qdiErYyK95PZ3TXE5u+0lQOL0yYgw/FJtb0bQhKJWtjxWlu2HWEs3PfEoK+dIyYwZ3HQBnaw6A9/znK+WZ5iV7LHcqQnVxEAmNyPnYDiR9vVM9UK9/XVJZmESoxcw1aBB4bHxIGb2YnM3U1aNFVLqIh1DKH77kN3R/e4RPFHFsUfyIaux15N3+/mlCyKmiicI4IQKbGC2SBD+iW5/gcw=="));}
}