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荔湾区pc端网站建设,干净无广告的搜索引擎,信用中国 网站截图怎么做,商洛 网站建设目录Java 接口RSAUtils.java示例中的依赖生成密钥对示例签名示例验证签名示例加密和解密示例Javascript 接口引入依赖生成密钥对示例签名示例验证签名示例加密和解密示例说在最后Java 接口 支持的密钥长度包括4种 RSA512、RSA1024、RSA2048、RSA4096支持的签名算法包括7种 MD2…

目录

  • Java 接口
    • RSAUtils.java
    • 示例中的依赖
    • 生成密钥对示例
    • 签名示例
    • 验证签名示例
    • 加密和解密示例
  • Javascript 接口
    • 引入依赖
    • 生成密钥对示例
    • 签名示例
    • 验证签名示例
    • 加密和解密示例
  • 说在最后

Java 接口

  1. 支持的密钥长度包括4种 RSA512、RSA1024、RSA2048、RSA4096
  2. 支持的签名算法包括7种 MD2withRSA、MD5withRSA、SHA1withRSA、SHA224withRSA、SHA256withRSA、SHA384withRSA、SHA512withRSA
  3. 对明文及密文长度没有限制
  4. 其中，java6 不支持签名算法 SHA224withRSA、SHA256withRSA、SHA384withRSA、SHA512withRSA
  5. 其中 java.util.Base64 为 java8 及以上版本支持的 API，低于 java8 的版本需要替换为其他工具类库。

RSAUtils.java

package com.sm;import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;
import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;
import java.util.HashMap;
import java.util.Map;import javax.crypto.Cipher;/*** * @Description: RSA签名,加解密处理核心文件*/
public final class RSAUtils {/*** 加密算法RSA*/private static final String KEY_ALGORITHM = "RSA";/*** 获取公钥的key*/public static final String PUBLIC_KEY = "RSAPublicKey";/*** 获取私钥的key*/public static final String PRIVATE_KEY = "RSAPrivateKey";public static RSAEncrypt getRSA512() {return RSAEncrypt.RSA512;}public static RSAEncrypt getRSA1024() {return RSAEncrypt.RSA1024;}public static RSAEncrypt getRSA2048() {return RSAEncrypt.RSA2048;}public static RSAEncrypt getRSA4096() {return RSAEncrypt.RSA4096;}/*** <p>* 获取私钥* </p>** @param keyMap 密钥对* @return* @throws Exception*/public static String getPrivateKey(Map<String, Object> keyMap) throws Exception {Key key = (Key) keyMap.get(PRIVATE_KEY);return Base64.getEncoder().encodeToString(key.getEncoded());}/*** <p>* 获取公钥* </p>** @param keyMap 密钥对* @return* @throws Exception*/public static String getPublicKey(Map<String, Object> keyMap) throws Exception {Key key = (Key) keyMap.get(PUBLIC_KEY);return Base64.getEncoder().encodeToString(key.getEncoded());}/*** @param content* @param charset* @return* @throws SignatureException* @throws UnsupportedEncodingException*/private static byte[] getContentBytes(String content, String charset) {if (charset == null || "".equals(charset)) {return content.getBytes();}try {return content.getBytes(charset);} catch (UnsupportedEncodingException e) {throw new RuntimeException("UnsupportedEncoding:" + charset, e);}}public static enum RSAEncryptEnum {RSA512(512, 53, 64),RSA1024(1024, 117, 128),RSA2048(2048, 245, 256),RSA4096(4096, 501, 512);/*** RSA key的长度*/private final int keysize;/*** RSA最大加密明文大小*/private final int maxEncryptBlock;/*** RSA最大解密密文大小*/private final int maxDecryptBlock;private RSAEncryptEnum(int keysize, int maxEncryptBlock, int maxDecryptBlock) {this.keysize = keysize;this.maxEncryptBlock = maxEncryptBlock;this.maxDecryptBlock = maxDecryptBlock;}public int getKeysize() {return keysize;}public int getMaxEncryptBlock() {return maxEncryptBlock;}public int getMaxDecryptBlock() {return maxDecryptBlock;}}public static final class RSAEncrypt {private final RSAEncryptEnum rsaEncryptEnum;private RSAEncrypt(RSAEncryptEnum rsaEncryptEnum) {this.rsaEncryptEnum = rsaEncryptEnum;}static final RSAEncrypt RSA512 = new RSAEncrypt(RSAEncryptEnum.RSA512);static final RSAEncrypt RSA1024 = new RSAEncrypt(RSAEncryptEnum.RSA1024);static final RSAEncrypt RSA2048 = new RSAEncrypt(RSAEncryptEnum.RSA2048);static final RSAEncrypt RSA4096 = new RSAEncrypt(RSAEncryptEnum.RSA4096);/*** <p>* 生成密钥对(公钥和私钥)* </p>** @return* @throws Exception*/public Map<String, Object> genKeyPair() throws Exception {KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM);keyPairGen.initialize(this.rsaEncryptEnum.getKeysize());KeyPair keyPair = keyPairGen.generateKeyPair();RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();Map<String, Object> keyMap = new HashMap<>(2, 1.0f);keyMap.put(PUBLIC_KEY, publicKey);keyMap.put(PRIVATE_KEY, privateKey);return keyMap;}/*** <P>* 私钥解密* </p>** @param encryptedData 已加密数据* @param privateKey 私钥(BASE64编码)* @return* @throws Exception*/public byte[] decryptByPrivateKey(byte[] encryptedData, String privateKey) throws Exception {byte[] keyBytes = Base64.getDecoder().decode(privateKey);PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);Key privateK = keyFactory.generatePrivate(pkcs8KeySpec);Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE, privateK);int inputLen = encryptedData.length;ByteArrayOutputStream out = new ByteArrayOutputStream();int offSet = 0;byte[] cache;int i = 0;int maxDecryptBlock = this.rsaEncryptEnum.getMaxDecryptBlock();// 对数据分段解密while (inputLen - offSet > 0) {if (inputLen - offSet > maxDecryptBlock) {cache = cipher.doFinal(encryptedData, offSet, maxDecryptBlock);} else {cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet);}out.write(cache, 0, cache.length);i++;offSet = i * maxDecryptBlock;}byte[] decryptedData = out.toByteArray();out.close();return decryptedData;}/*** <p>* 公钥解密* </p>** @param encryptedData 已加密数据* @param publicKey 公钥(BASE64编码)* @return* @throws Exception*/public byte[] decryptByPublicKey(byte[] encryptedData, String publicKey) throws Exception {byte[] keyBytes = Base64.getDecoder().decode(publicKey);X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);Key publicK = keyFactory.generatePublic(x509KeySpec);Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE, publicK);int inputLen = encryptedData.length;ByteArrayOutputStream out = new ByteArrayOutputStream();int offSet = 0;byte[] cache;int i = 0;int maxDecryptBlock = this.rsaEncryptEnum.getMaxDecryptBlock();// 对数据分段解密while (inputLen - offSet > 0) {if (inputLen - offSet > maxDecryptBlock) {cache = cipher.doFinal(encryptedData, offSet, maxDecryptBlock);} else {cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet);}out.write(cache, 0, cache.length);i++;offSet = i * maxDecryptBlock;}byte[] decryptedData = out.toByteArray();out.close();return decryptedData;}/*** <p>* 公钥加密* </p>** @param data 源数据* @param publicKey 公钥(BASE64编码)* @return* @throws Exception*/public byte[] encryptByPublicKey(byte[] data, String publicKey) throws Exception {byte[] keyBytes = Base64.getDecoder().decode(publicKey);X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);Key publicK = keyFactory.generatePublic(x509KeySpec);// 对数据加密Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE, publicK);int inputLen = data.length;ByteArrayOutputStream out = new ByteArrayOutputStream();int offSet = 0;byte[] cache;int i = 0;int maxEncryptBlock = this.rsaEncryptEnum.getMaxEncryptBlock();// 对数据分段加密while (inputLen - offSet > 0) {if (inputLen - offSet > maxEncryptBlock) {cache = cipher.doFinal(data, offSet, maxEncryptBlock);} else {cache = cipher.doFinal(data, offSet, inputLen - offSet);}out.write(cache, 0, cache.length);i++;offSet = i * maxEncryptBlock;}byte[] encryptedData = out.toByteArray();out.close();return encryptedData;}/*** <p>* 私钥加密* </p>** @param data 源数据* @param privateKey 私钥(BASE64编码)* @return* @throws Exception*/public byte[] encryptByPrivateKey(byte[] data, String privateKey) throws Exception {byte[] keyBytes = Base64.getDecoder().decode(privateKey);PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);Key privateK = keyFactory.generatePrivate(pkcs8KeySpec);Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE, privateK);int inputLen = data.length;ByteArrayOutputStream out = new ByteArrayOutputStream();int offSet = 0;byte[] cache;int i = 0;int maxEncryptBlock = this.rsaEncryptEnum.getMaxEncryptBlock();// 对数据分段加密while (inputLen - offSet > 0) {if (inputLen - offSet > maxEncryptBlock) {cache = cipher.doFinal(data, offSet, maxEncryptBlock);} else {cache = cipher.doFinal(data, offSet, inputLen - offSet);}out.write(cache, 0, cache.length);i++;offSet = i * maxEncryptBlock;}byte[] encryptedData = out.toByteArray();out.close();return encryptedData;}}public static RSASignature getMD2withRSA() {return RSASignature.MD2_WITH_RSA;}public static RSASignature getMD5withRSA() {return RSASignature.MD5_WITH_RSA;}public static RSASignature getSHA1withRSA() {return RSASignature.SHA1_WITH_RSA;}public static RSASignature getSHA224withRSA() {return RSASignature.SHA224_WITH_RSA;}public static RSASignature getSHA256withRSA() {return RSASignature.SHA256_WITH_RSA;}public static RSASignature getSHA384withRSA() {return RSASignature.SHA384_WITH_RSA;}public static RSASignature getSHA512withRSA() {return RSASignature.SHA512_WITH_RSA;}public static final class RSASignature {/*** 签名算法*/private final String signatureAlgorithm;private RSASignature(String signatureAlgorithm) {this.signatureAlgorithm = signatureAlgorithm;}static final RSASignature MD2_WITH_RSA = new RSASignature("MD2withRSA");static final RSASignature MD5_WITH_RSA = new RSASignature("MD5withRSA");static final RSASignature SHA1_WITH_RSA = new RSASignature("SHA1withRSA");static final RSASignature SHA224_WITH_RSA = new RSASignature("SHA224withRSA");static final RSASignature SHA256_WITH_RSA = new RSASignature("SHA256withRSA");static final RSASignature SHA384_WITH_RSA = new RSASignature("SHA384withRSA");static final RSASignature SHA512_WITH_RSA = new RSASignature("SHA512withRSA");/*** 签名字符串** @param text*            需要签名的字符串* @param privateKey 私钥(BASE64编码)** @param charset*            编码格式* @return 签名结果(BASE64编码)*/public String sign(String text, String privateKey, String charset) throws Exception {byte[] keyBytes = Base64.getDecoder().decode(privateKey);PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);PrivateKey privateK = keyFactory.generatePrivate(pkcs8KeySpec);Signature signature = Signature.getInstance(this.signatureAlgorithm);signature.initSign(privateK);signature.update(getContentBytes(text, charset));byte[] result = signature.sign();return Base64.getEncoder().encodeToString(result);}/*** 签名字符串** @param text*            需要签名的字符串* @param sign*            客户签名结果* @param publicKey*            公钥(BASE64编码)* @param charset*            编码格式* @return 验签结果*/public boolean verify(String text, String sign, String publicKey, String charset) throws Exception {byte[] keyBytes = Base64.getDecoder().decode(publicKey);X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes);KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);PublicKey publicK = keyFactory.generatePublic(keySpec);Signature signature = Signature.getInstance(this.signatureAlgorithm);signature.initVerify(publicK);signature.update(getContentBytes(text, charset));return signature.verify(Base64.getDecoder().decode(sign));}}}

示例中的依赖

import java.util.Base64;
import java.util.Map;import com.sm.RSAUtils.RSAEncrypt;
import com.sm.RSAUtils.RSASignature;

生成密钥对示例

public static void genKeyPair () throws Exception {RSAEncrypt rsaEncrypt = RSAUtils.getRSA1024();//生成密钥对Map<String, Object> map = rsaEncrypt.genKeyPair();String pubKey = RSAUtils.getPublicKey(map);String priKey = RSAUtils.getPrivateKey(map);System.out.println("pubKey-->"+pubKey);System.out.println("priKey-->"+priKey);
}

签名示例

public static void sign() throws Exception {String pubKey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnsXBwH6me+8+P3BdtnZnsze3nQXCmt8+9+jcLmxK+Q2Oe6qQ3hfElokUpWBLogEgmoj5/dF+xWaQYAzvd1LR7zuKDESQmRnOb9FQD6Pr2RsDOTFBCa5DA0EQ17TmqqaJT9+xrcIVxU/Y2+2tCkRJBJuo7hRoFoM2l37ju9InTGA9P/vQXi9jjSiZ5o6Zbu6svHG1B/1GsnC+wtszYzsMZs7Lo2N5lK2e+q2bBnpvb7PpWOWTGVpeFoivbH+fCIRB6wiFAiQxeZ++KNs2Coi7zoj6cOX49aG4rv4/gnwftOKq4Fb9I+cQW5v7d3Nmp6Jh647DshTEwpLlyxt1J0feUQIDAQAB";String priKey = "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";String text = "id_card=1121321121321321中文2123123&partner_id=TLHS2020001";final String charset = "utf-8";RSASignature rsaSignature = RSAUtils.getSHA256withRSA();String sign = rsaSignature.sign(text, priKey, charset);System.out.println("sign-->"+sign);
}

验证签名示例

public static void verify() throws Exception {String pubKey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnsXBwH6me+8+P3BdtnZnsze3nQXCmt8+9+jcLmxK+Q2Oe6qQ3hfElokUpWBLogEgmoj5/dF+xWaQYAzvd1LR7zuKDESQmRnOb9FQD6Pr2RsDOTFBCa5DA0EQ17TmqqaJT9+xrcIVxU/Y2+2tCkRJBJuo7hRoFoM2l37ju9InTGA9P/vQXi9jjSiZ5o6Zbu6svHG1B/1GsnC+wtszYzsMZs7Lo2N5lK2e+q2bBnpvb7PpWOWTGVpeFoivbH+fCIRB6wiFAiQxeZ++KNs2Coi7zoj6cOX49aG4rv4/gnwftOKq4Fb9I+cQW5v7d3Nmp6Jh647DshTEwpLlyxt1J0feUQIDAQAB";String priKey = "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";String text = "id_card=1121321121321321中文2123123&partner_id=TLHS2020001";String sign = "GAjmZiUH0hnMOZyOiViCvzZDHoMVXdmwjyyLiAOgBYFhM0/d8GPiPMKZsPIAmIKiDRwX37bOoG+wD4/Miptq5+3tmt8Cqktzv8v2Z6kGNejkJl9Mos5lgRI7kdFf9GMiQuy3lvRybOT8S0HFGr2vFrMrUrkYL9W+PzlILS7sQuerLqVm0xKIuj5/thm8L5kcVQFozudxydbYxsBp8pvSqsVRCZ4mPO/S6I1NTeS7ffLGixrmyWsXEVX9/D11WGgN3UYrNlEVna9Y4VOk9o9bB8un/FaJyyMuIHpT0YYLjZxAO2GpxuD9dsJbEL990Lr5k+P66mCeC5mNX/s2jBI49w==";final String charset = "utf-8";RSASignature rsaSignature = RSAUtils.getSHA256withRSA();if(rsaSignature.verify(text, sign, pubKey, charset)) {System.out.println("验签成功");}else {System.out.println("验签失败");}
}

加密和解密示例

public static void encryptAndDecrypt() throws Exception {RSAEncrypt rsaEncrypt = RSAUtils.getRSA2048();String pubKey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnsXBwH6me+8+P3BdtnZnsze3nQXCmt8+9+jcLmxK+Q2Oe6qQ3hfElokUpWBLogEgmoj5/dF+xWaQYAzvd1LR7zuKDESQmRnOb9FQD6Pr2RsDOTFBCa5DA0EQ17TmqqaJT9+xrcIVxU/Y2+2tCkRJBJuo7hRoFoM2l37ju9InTGA9P/vQXi9jjSiZ5o6Zbu6svHG1B/1GsnC+wtszYzsMZs7Lo2N5lK2e+q2bBnpvb7PpWOWTGVpeFoivbH+fCIRB6wiFAiQxeZ++KNs2Coi7zoj6cOX49aG4rv4/gnwftOKq4Fb9I+cQW5v7d3Nmp6Jh647DshTEwpLlyxt1J0feUQIDAQAB";String priKey = "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";String text = "id_card=1121321121321321中文2123123&partner_id=TLHS2020001";// 加密与解密byte[] data = text.getBytes();System.out.println("加密前--->" + new String(data));byte[] encryptedDataPri = rsaEncrypt.encryptByPrivateKey(data, priKey);// 密文System.out.println("私钥加密后--->" + Base64.getEncoder().encodeToString(encryptedDataPri));byte[] decryptedDataPub = rsaEncrypt.decryptByPublicKey(encryptedDataPri, pubKey);System.out.println("公钥解密后--->"+new String(decryptedDataPub));byte[] encryptedDataPub = rsaEncrypt.encryptByPublicKey(data, pubKey);// 密文System.out.println("公钥加密后--->" + Base64.getEncoder().encodeToString(encryptedDataPub));byte[] decryptedDataPri = rsaEncrypt.decryptByPrivateKey(encryptedDataPub, priKey);System.out.println("私钥解密后--->"+new String(decryptedDataPri));
}

Javascript 接口

  1. jsencrypt 支持的密钥长度包括4种 RSA512、RSA1024、RSA2048、RSA4096
  2. crypto-js 支持的签名算法包括 MD5、SHA1、SHA224、SHA256、SHA384、SHA512 等多种算法
  3. 对明文及密文长度有限制，超长会报错，可以查看 https://github.com/travist/jsencrypt/issues/110 尝试解决
  4. 经测试，jsencrypt 不支持使用私钥加密，即由私钥加密产生的密文不能被解密。

引入依赖

github链接
https://github.com/travist/jsencrypt
https://github.com/brix/crypto-js/tree/4.1.1

<script type="text/javascript" src="jsencrypt.min.js"></script>
<script type="text/javascript" src="crypto-js.js"></script>

生成密钥对示例

(function () {//生成密钥对var crypt = new JSEncrypt({default_key_size: 2048});crypt.getKey();console.log('PrivateKey', crypt.getPrivateKey());console.log('PublicKey', crypt.getPublicKey());
})();

签名示例

(function () {//RSA2048签名var pubKey = 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnsXBwH6me+8+P3BdtnZnsze3nQXCmt8+9+jcLmxK+Q2Oe6qQ3hfElokUpWBLogEgmoj5/dF+xWaQYAzvd1LR7zuKDESQmRnOb9FQD6Pr2RsDOTFBCa5DA0EQ17TmqqaJT9+xrcIVxU/Y2+2tCkRJBJuo7hRoFoM2l37ju9InTGA9P/vQXi9jjSiZ5o6Zbu6svHG1B/1GsnC+wtszYzsMZs7Lo2N5lK2e+q2bBnpvb7PpWOWTGVpeFoivbH+fCIRB6wiFAiQxeZ++KNs2Coi7zoj6cOX49aG4rv4/gnwftOKq4Fb9I+cQW5v7d3Nmp6Jh647DshTEwpLlyxt1J0feUQIDAQAB';var priKey = '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';//SHA256withRSAvar plainText = 'id_card=1121321121321321中文2123123&partner_id=TLHS2020001';//**加签**var sign = new JSEncrypt();//设置私钥sign.setPrivateKey(priKey);//用私钥给明文加签,例子中使用SHA256算法，具体情况具体调整var signature = sign.sign(plainText, CryptoJS.SHA256, "sha256");console.log('sha256签名', signature);
})();

验证签名示例

(function () {//RSA2048验签var pubKey = 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnsXBwH6me+8+P3BdtnZnsze3nQXCmt8+9+jcLmxK+Q2Oe6qQ3hfElokUpWBLogEgmoj5/dF+xWaQYAzvd1LR7zuKDESQmRnOb9FQD6Pr2RsDOTFBCa5DA0EQ17TmqqaJT9+xrcIVxU/Y2+2tCkRJBJuo7hRoFoM2l37ju9InTGA9P/vQXi9jjSiZ5o6Zbu6svHG1B/1GsnC+wtszYzsMZs7Lo2N5lK2e+q2bBnpvb7PpWOWTGVpeFoivbH+fCIRB6wiFAiQxeZ++KNs2Coi7zoj6cOX49aG4rv4/gnwftOKq4Fb9I+cQW5v7d3Nmp6Jh647DshTEwpLlyxt1J0feUQIDAQAB';var priKey = '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';//SHA256withRSAvar plainText = 'id_card=1121321121321321中文2123123&partner_id=TLHS2020001';var signature = 'GAjmZiUH0hnMOZyOiViCvzZDHoMVXdmwjyyLiAOgBYFhM0/d8GPiPMKZsPIAmIKiDRwX37bOoG+wD4/Miptq5+3tmt8Cqktzv8v2Z6kGNejkJl9Mos5lgRI7kdFf9GMiQuy3lvRybOT8S0HFGr2vFrMrUrkYL9W+PzlILS7sQuerLqVm0xKIuj5/thm8L5kcVQFozudxydbYxsBp8pvSqsVRCZ4mPO/S6I1NTeS7ffLGixrmyWsXEVX9/D11WGgN3UYrNlEVna9Y4VOk9o9bB8un/FaJyyMuIHpT0YYLjZxAO2GpxuD9dsJbEL990Lr5k+P66mCeC5mNX/s2jBI49w==';//**验签**var verify = new JSEncrypt({default_key_size: 2048});//设置公钥verify.setPublicKey(pubKey);//验证方法有三个参数明文，用私钥加签后的字符串,加签的算法(跟上文保持一致哈~)var verified = verify.verify(plainText, signature, CryptoJS.SHA256);// 判断验签是否成功if (verified) {console.log('验签成功啦~');}else {console.log('验签失败啦....');}
})();

加密和解密示例

(function () {//RSA2048加密解密var pubKey = 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnsXBwH6me+8+P3BdtnZnsze3nQXCmt8+9+jcLmxK+Q2Oe6qQ3hfElokUpWBLogEgmoj5/dF+xWaQYAzvd1LR7zuKDESQmRnOb9FQD6Pr2RsDOTFBCa5DA0EQ17TmqqaJT9+xrcIVxU/Y2+2tCkRJBJuo7hRoFoM2l37ju9InTGA9P/vQXi9jjSiZ5o6Zbu6svHG1B/1GsnC+wtszYzsMZs7Lo2N5lK2e+q2bBnpvb7PpWOWTGVpeFoivbH+fCIRB6wiFAiQxeZ++KNs2Coi7zoj6cOX49aG4rv4/gnwftOKq4Fb9I+cQW5v7d3Nmp6Jh647DshTEwpLlyxt1J0feUQIDAQAB';var priKey = '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';var plainText = 'id_card=1121321121321321中文2123123&partner_id=TLHS2020001';console.log('加密前', plainText);var encryptPub = new JSEncrypt({default_key_size: 2048});encryptPub.setPublicKey(pubKey);var encryptedPub = encryptPub.encrypt(plainText);console.log('公钥加密后', encryptedPub);var decryptPri = new JSEncrypt({default_key_size: 2048});decryptPri.setPrivateKey(priKey);var uncryptedPri = decryptPri.decrypt(encryptedPub);console.log('私钥解密后', uncryptedPri);
})();

说在最后

Java 和 Javascript 支持的生成密钥对签名加密解密功能可以通用。

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