本文介绍: springboot + vue RSA加密传输 加签 验签 非对称加密
二、关于PKCS#1和PKCS#8格式密钥
由于Java非对称加解密、加验签都是采用PKCS#8格式的密钥，PKCS#1格式的密钥跑不通，这里先简单介绍一下两者的区别。
1、简介
PKCS#1和PKCS#8是两个不同的数字证书标准。
PKCS#1是一个公钥加密标准，它定义了使用RSA算法进行加密和签名的格式。主要用于对数字签名、加密以及数字签名验证等应用。
PKCS#8则是一个私钥保护标准，它定义了私钥的存储格式。它主要用于在文件中对私钥进行保护，以防止意外泄露或不当使用。
总的来说，PKCS#1是针对公钥的标准，而PKCS#8是针对私钥的标准。
2、区别
两者的密钥格式不一样，下面以标准.pem格式为例，看下PKCS#1格式和PKCS#8格式密钥的区别：
- PKCS#1格式私钥：
-----BEGIN RSA PRIVATE KEY-----
MIICXAIBAAKBgQC5BW6T9GVaaG/epGDjPpY3wN0DrBt+NojvxkEgpUdOAxgAepqe
...
TbzKH/LEqZN8WVau3bf41yAx2YoaOsIJJtOUTYcfh14=
-----END RSA PRIVATE KEY-----
- PKCS#8格式私钥：
-----BEGIN PRIVATE KEY-----
MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBALkFbpP0ZVpob96k
...
wgkm05RNhx+HXg==
-----END PRIVATE KEY-----
- PKCS#1格式公钥：
-----BEGIN RSA PUBLIC KEY-----
MIICXAIBAAKBgQC5BW6T9GVaaG/epGDjPpY3wN0DrBt+NojvxkEgpUdOAxgAepqe
...
TbzKH/LEqZN8WVau3bf41yAx2YoaOsIJJtOUTYcfh14=
-----END RSA PUBLIC KEY-----
- PKCS#8格式公钥：
-----BEGIN PUBLIC KEY-----
MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBALkFbpP0ZVpob96k
...
wgkm05RNhx+HXg==
-----END PUBLIC KEY-----
四、前端RSA加解密、加验签示例
1、相关依赖
// JSEncrypt
npm i jsencrypt
// jsrsasign
npm i jsrsasign
2、cryptoUtils工具类封装
import CryptoJS from "crypto-js";
import JSEncrypt from "jsencrypt";
import JsRsaSign from "jsrsasign";
/**
* RSA加密
* @param publicKey 公钥
* @param plainText 明文
* @returns {*} 密文
*/
export function encryptByRSA(publicKey, plainText) {
const encryptor = new JSEncrypt();
encryptor.setPublicKey(publicKey);
return encryptor.encrypt(plainText);
}
/**
* RSA解密
* @param privateKey 私钥
* @param cipherText 密文
* @returns {*} 明文
*/
export function decryptByRSA(privateKey, cipherText) {
const decrypter = new JSEncrypt();
decrypter.setPrivateKey(privateKey);
return decrypter.decrypt(cipherText);
}
/**
* 生成RSA密钥对，填充模式为PKCS8。
* 更多模式参考：<a href="https://kjur.github.io/jsrsasign/api/symbols/KEYUTIL.html">https://kjur.github.io/jsrsasign/api/symbols/KEYUTIL.html</a>
* @returns {{privateKey: (string|string|*), publicKey: (string|string|*)}}
*/
export function generateRsaKeyWithPKCS8() {
const keyPair = JsRsaSign.KEYUTIL.generateKeypair("RSA", 1024);
const privateKey = JsRsaSign.KEYUTIL.getPEM(keyPair.prvKeyObj, "PKCS8PRV");
const publicKey = JsRsaSign.KEYUTIL.getPEM(keyPair.pubKeyObj);
return { privateKey, publicKey };
}
/**
* SHA256和RSA加签
* @param privateKey 私钥
* @param msg 加签内容
* @returns {string} Base64编码签名内容
*/
export function signBySHA256WithRSA(privateKey, msg) {
const key = JsRsaSign.KEYUTIL.getKey(privateKey);
const signature = new JsRsaSign.KJUR.crypto.Signature({
alg: "SHA256withRSA",
});
signature.init(key);
signature.updateString(msg);
// 签名后的为16进制字符串，这里转换为16进制字符串
return JsRsaSign.hextob64(signature.sign());
}
/**
* SHA256和RSA验签
* @param publicKey 公钥：必须为标准pem格式。如果是PKCS1格式，必须包含-----BEGIN RSA PRIVATE KEY-----，如果是PKCS8格式，必须包含-----BEGIN PRIVATE KEY-----
* @param base64SignStr Base64编码签名字符串
* @param msg 原内容
* @returns {boolean} 是否验签通过
*/
export function verifyBySHA256WithRSA(publicKey, base64SignStr, msg) {
const key = JsRsaSign.KEYUTIL.getKey(publicKey);
const signature = new JsRsaSign.KJUR.crypto.Signature({
alg: "SHA256withRSA",
});
signature.init(key);
signature.updateString(msg);
// 需要将Base64进制签名字符串转换成16进制字符串
return signature.verify(JsRsaSign.b64tohex(base64SignStr));
}
3、测试用例
先在前端测试下密钥对生成，RSA加解密、加验签，测试代码如下：
import * as CryptoUtils from '@/utils/cryptoUtils.js';
const {privateKey, publicKey} = CryptoUtils.generateRsaKeyWithPKCS8();
console.log(`生成的私钥为：n${privateKey}`);
console.log(`生成的公钥为：n${publicKey}`);
const cipherText = CryptoUtils.encryptByRSA(publicKey, "test");
console.log(`test加密后的内容为：n${cipherText}`);
const plainText = CryptoUtils.decryptByRSA(privateKey, cipherText);
console.log(`解密后的内容为：n${plainText}`);
const signature = CryptoUtils.signBySHA256WithRSA(privateKey, "test");
console.log(`生成的签名：n${signature}`);
const isVerified = CryptoUtils.verifyBySHA256WithRSA(publicKey, signature, "test");
console.log(`是否验签通过：${isVerified}`);
控制台输出结果为：
生成的私钥为：
-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----
生成的公钥为：
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDL9WnTZijcOK7a9g8vdg2dzZNU
gqxhnrZatLEoC2PGybAcgLz9mTjoolqtsQ1FbvGaUHzPL/PbY3oH67CFHDf2VS3O
vEYnNwSLaPOaEHPYwc/mgpNa13jTHj5ElajWgv5+JCe92ONWYCgHtBr8qjMlDYZP
FWXfkEjQE0r/pRnqdwIDAQAB
-----END PUBLIC KEY-----
test加密后的内容为：
KjcaDKLnBbvxRzuKMysqoz9MHRXCUNIH67+XDiFGTJbM8Rjw4Cei0CzjAPjk2jgAR37Kgh6lX2+Xg8AI9wEmzWr08bt8i2FFxVMrcfOCs5zI1y+2T7G9034f5b0gNx/Pc4dDz+1k453vo0AhCC0vrtb1OfbsRu5oOFns0TqoAMY=
解密后的内容为：test
生成的签名：
t0koTqhiWmq/wEvI/ieJq5kZj7Dc/limF7GNVtHNLReqLVBXZvAZrOIwdqda7LBHBSHcRZBISWtbuyDiOR9KFPObrOgOEUOdfACUMzjWKCtO8ZgcQ+U02FyGeeH2rT9rJEJAXDEM+Kn3+H4ZdbrUFPY3jQRl535wnK9CLpxqAG4=
是否验签通过：true
备注：为什么在前端生成PKCS#8格式密钥呢？
因为在Java中非对称加解密、加验签都是用的PKCS#8，PKCS#1格式密钥需要转换成PKCS#8。
五、Java后端RSA加解密、加验签
1、CryptoUtils工具类封装
import com.universe.crypto.CryptoUtils.Algorithm.Encryption;
import com.universe.crypto.CryptoUtils.Algorithm.Signing;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.Getter;
import lombok.NoArgsConstructor;
import org.apache.commons.lang3.StringUtils;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
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.InvalidKeySpecException;
import java.security.spec.KeySpec;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;
import java.util.Base64.Decoder;
import java.util.Base64.Encoder;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* 支持AES、DES、RSA加密、数字签名以及生成对称密钥和非对称密钥对
*/
public class CryptoUtils {
private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;
private static final Encoder BASE64_ENCODER = Base64.getEncoder();
private static final Decoder BASE64_DECODER = Base64.getDecoder();
private static final Map<Algorithm, KeyFactory> KEY_FACTORY_CACHE = new ConcurrentHashMap<>();
private static final Map<Algorithm, Cipher> CIPHER_CACHE = new HashMap<>();
/**
* 生成对称密钥，目前支持的算法有AES、DES
* @param algorithm
* @return
* @throws NoSuchAlgorithmException
*/
public static String generateSymmetricKey(Algorithm algorithm) throws NoSuchAlgorithmException {
KeyGenerator generator = KeyGenerator.getInstance(algorithm.getName());
generator.init(algorithm.getKeySize());
SecretKey secretKey = generator.generateKey();
return BASE64_ENCODER.encodeToString(secretKey.getEncoded());
}
/**
* 生成非对称密钥对，目前支持的算法有RSA、DSA。备注：默认生成的密钥格式为PKCS8
* @param algorithm
* @return
* @throws NoSuchAlgorithmException
*/
public static AsymmetricKeyPair generateAsymmetricKeyPair(Algorithm algorithm) throws NoSuchAlgorithmException {
KeyPairGenerator generator = KeyPairGenerator.getInstance(algorithm.getName());
generator.initialize(algorithm.getKeySize());
KeyPair keyPair = generator.generateKeyPair();
String publicKey = BASE64_ENCODER.encodeToString(keyPair.getPublic().getEncoded());
String privateKey = BASE64_ENCODER.encodeToString(keyPair.getPrivate().getEncoded());
return new AsymmetricKeyPair(publicKey, privateKey);
}
public static String encryptByRSA(String publicKeyText, String plainText) throws Exception {
return encryptAsymmetrically(publicKeyText, plainText, Encryption.RSA_ECB_PKCS1);
}
public static String decryptByRSA(String privateKeyText, String ciphertext) throws Exception {
return decryptAsymmetrically(privateKeyText, ciphertext, Encryption.RSA_ECB_PKCS1);
}
/**
* SHA1签名算法和DSA加密算法结合使用生成数字签名
* @param privateKeyText
* @param msg
* @return 数字签名
* @throws Exception
*/
public static String signBySHA1WithDSA(String privateKeyText, String msg) throws Exception {
return doSign(privateKeyText, msg, Encryption.DSA, Signing.SHA1WithDSA);
}
/**
* SHA1签名算法和RSA加密算法结合使用生成数字签名
* @param privateKeyText 私钥
* @param msg 待加签内容
* @return 数字签名
* @throws Exception
*/
public static String signBySHA1WithRSA(String privateKeyText, String msg) throws Exception {
return doSign(privateKeyText, msg, Encryption.RSA_ECB_PKCS1, Signing.SHA1WithRSA);
}
/**
* SHA256签名算法和RSA加密算法结合使用生成数字签名
* @param privateKeyText 私钥
* @param msg 待加签内容
* @return 数字签名
* @throws Exception
*/
public static String signBySHA256WithRSA(String privateKeyText, String msg) throws Exception {
return doSign(privateKeyText, msg, Encryption.RSA_ECB_PKCS1, Signing.SHA256WithRSA);
}
/**
* SHA1签名算法和DSA加密算法检验数字签名
* @param publicKeyText 公钥
* @param msg 待验签内容
* @param signatureText 数字
* @return 检验是否成功
* @throws Exception
*/
public static boolean verifyBySHA1WithDSA(String publicKeyText, String msg, String signatureText) throws Exception {
return doVerify(publicKeyText, msg, signatureText, Encryption.DSA, Signing.SHA1WithDSA);
}
/**
* SHA1签名算法和RSA加密算法检验数字签名
* @param publicKeyText 公钥
* @param msg 待验签内容
* @param signatureText 签名
* @return 校验是否成功
* @throws Exception
*/
public static boolean verifyBySHA1WithRSA(String publicKeyText, String msg, String signatureText) throws Exception {
return doVerify(publicKeyText, msg, signatureText, Encryption.RSA_ECB_PKCS1, Signing.SHA1WithRSA);
}
/**
* SHA256签名算法和RSA加密算法检验数字签名
* @param publicKeyText 公钥
* @param msg 待验签内容
* @param signatureText 签名
* @return 校验是否成功
* @throws Exception
*/
public static boolean verifyBySHA256WithRSA(String publicKeyText, String msg, String signatureText) throws Exception {
return doVerify(publicKeyText, msg, signatureText, Encryption.RSA_ECB_PKCS1, Signing.SHA256WithRSA);
}
/**
* 对称加密
* @param secretKey 密钥
* @param iv 加密向量，只有CBC模式才支持，如果是CBC则必传
* @param plainText 明文
* @param algorithm 对称加密算法，如AES、DES
* @return
* @throws Exception
*/
public static String encryptSymmetrically(String secretKey, String iv, String plainText, Algorithm algorithm) throws Exception {
SecretKey key = decodeSymmetricKey(secretKey, algorithm);
IvParameterSpec ivParameterSpec = StringUtils.isBlank(iv) ? null : decodeIv(iv);
byte[] plainTextInBytes = plainText.getBytes(DEFAULT_CHARSET);
byte[] ciphertextInBytes = transform(algorithm, Cipher.ENCRYPT_MODE, key, ivParameterSpec, plainTextInBytes);
return BASE64_ENCODER.encodeToString(ciphertextInBytes);
}
/**
* 对称解密
* @param secretKey 密钥
* @param iv 加密向量，只有CBC模式才支持，如果是CBC则必传
* @param ciphertext 密文
* @param algorithm 对称加密算法，如AES、DES
* @return
* @throws Exception
*/
public static String decryptSymmetrically(String secretKey, String iv, String ciphertext, Algorithm algorithm) throws Exception {
SecretKey key = decodeSymmetricKey(secretKey, algorithm);
IvParameterSpec ivParameterSpec = StringUtils.isBlank(iv) ? null : decodeIv(iv);
byte[] ciphertextInBytes = BASE64_DECODER.decode(ciphertext);
byte[] plainTextInBytes = transform(algorithm, Cipher.DECRYPT_MODE, key, ivParameterSpec, ciphertextInBytes);
return new String(plainTextInBytes, DEFAULT_CHARSET);
}
/**
* 非对称加密
* @param publicKeyText 公钥
* @param plainText 明文
* @param algorithm 非对称加密算法
* @return
* @throws Exception
*/
public static String encryptAsymmetrically(String publicKeyText, String plainText, Algorithm algorithm) throws Exception {
PublicKey publicKey = regeneratePublicKey(publicKeyText, algorithm);
byte[] plainTextInBytes = plainText.getBytes(DEFAULT_CHARSET);
byte[] ciphertextInBytes = transform(algorithm, Cipher.ENCRYPT_MODE, publicKey, plainTextInBytes);
return BASE64_ENCODER.encodeToString(ciphertextInBytes);
}
/**
* 非对称解密
* @param privateKeyText 私钥
* @param ciphertext 密文
* @param algorithm 非对称加密算法
* @return
* @throws Exception
*/
public static String decryptAsymmetrically(String privateKeyText, String ciphertext, Algorithm algorithm) throws Exception {
PrivateKey privateKey = regeneratePrivateKey(privateKeyText, algorithm);
byte[] ciphertextInBytes = BASE64_DECODER.decode(ciphertext);
byte[] plainTextInBytes = transform(algorithm, Cipher.DECRYPT_MODE, privateKey, ciphertextInBytes);
return new String(plainTextInBytes, DEFAULT_CHARSET);
}
/**
* 生成数字签名
* @param privateKeyText 私钥
* @param msg 传输的数据
* @param encryptionAlgorithm 加密算法，见Algorithm中的加密算法
* @param signatureAlgorithm 签名算法，见Algorithm中的签名算法
* @return 数字签名
* @throws Exception
*/
public static String doSign(String privateKeyText, String msg, Algorithm encryptionAlgorithm, Algorithm signatureAlgorithm)
throws Exception {
PrivateKey privateKey = regeneratePrivateKey(privateKeyText, encryptionAlgorithm);
// Signature只支持签名算法
Signature signature = Signature.getInstance(signatureAlgorithm.getName());
signature.initSign(privateKey);
signature.update(msg.getBytes(DEFAULT_CHARSET));
byte[] signatureInBytes = signature.sign();
return BASE64_ENCODER.encodeToString(signatureInBytes);
}
/**
* 数字签名验证
* @param publicKeyText 公钥
* @param msg 传输的数据
* @param signatureText 数字签名
* @param encryptionAlgorithm 加密算法，见Algorithm中的加密算法
* @param signatureAlgorithm 签名算法，见Algorithm中的签名算法
* @return 校验是否成功
* @throws Exception
*/
public static boolean doVerify(String publicKeyText, String msg, String signatureText, Algorithm encryptionAlgorithm,
Algorithm signatureAlgorithm) throws Exception {
PublicKey publicKey = regeneratePublicKey(publicKeyText, encryptionAlgorithm);
Signature signature = Signature.getInstance(signatureAlgorithm.getName());
signature.initVerify(publicKey);
signature.update(msg.getBytes(DEFAULT_CHARSET));
return signature.verify(BASE64_DECODER.decode(signatureText));
}
/**
* 将密钥进行Base64位解码，重新生成SecretKey实例
* @param secretKey 密钥
* @param algorithm 算法
* @return
*/
private static SecretKey decodeSymmetricKey(String secretKey, Algorithm algorithm) {
byte[] key = BASE64_DECODER.decode(secretKey);
return new SecretKeySpec(key, algorithm.getName());
}
private static IvParameterSpec decodeIv(String iv) {
byte[] ivInBytes = BASE64_DECODER.decode(iv);
return new IvParameterSpec(ivInBytes);
}
private static PublicKey regeneratePublicKey(String publicKeyText, Algorithm algorithm)
throws NoSuchAlgorithmException, InvalidKeySpecException {
byte[] keyInBytes = BASE64_DECODER.decode(publicKeyText);
KeyFactory keyFactory = getKeyFactory(algorithm);
// 公钥必须使用RSAPublicKeySpec或者X509EncodedKeySpec
KeySpec publicKeySpec = new X509EncodedKeySpec(keyInBytes);
PublicKey publicKey = keyFactory.generatePublic(publicKeySpec);
return publicKey;
}
private static PrivateKey regeneratePrivateKey(String key, Algorithm algorithm) throws Exception {
byte[] keyInBytes = BASE64_DECODER.decode(key);
KeyFactory keyFactory = getKeyFactory(algorithm);
// 私钥必须使用RSAPrivateCrtKeySpec或者PKCS8EncodedKeySpec
KeySpec privateKeySpec = new PKCS8EncodedKeySpec(keyInBytes);
PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);
return privateKey;
}
private static KeyFactory getKeyFactory(Algorithm algorithm) throws NoSuchAlgorithmException {
KeyFactory keyFactory = KEY_FACTORY_CACHE.get(algorithm);
if (keyFactory == null) {
keyFactory = KeyFactory.getInstance(algorithm.getName());
KEY_FACTORY_CACHE.put(algorithm, keyFactory);
}
return keyFactory;
}
private static byte[] transform(Algorithm algorithm, int mode, Key key, byte[] msg) throws Exception {
return transform(algorithm, mode, key, null, msg);
}
private static byte[] transform(Algorithm algorithm, int mode, Key key, IvParameterSpec iv, byte[] msg) throws Exception {
Cipher cipher = CIPHER_CACHE.get(algorithm);
// double check，减少上下文切换
if (cipher == null) {
synchronized (CryptoUtils.class) {
if ((cipher = CIPHER_CACHE.get(algorithm)) == null) {
cipher = determineWhichCipherToUse(algorithm);
CIPHER_CACHE.put(algorithm, cipher);
}
cipher.init(mode, key, iv);
return cipher.doFinal(msg);
}
}
synchronized (CryptoUtils.class) {
cipher.init(mode, key, iv);
return cipher.doFinal(msg);
}
}
private static Cipher determineWhichCipherToUse(Algorithm algorithm) throws NoSuchAlgorithmException, NoSuchPaddingException {
Cipher cipher;
String transformation = algorithm.getTransformation();
// 官方推荐的transformation使用algorithm/mode/padding组合，SunJCE使用ECB作为默认模式，使用PKCS5Padding作为默认填充
if (StringUtils.isNotEmpty(transformation)) {
cipher = Cipher.getInstance(transformation);
} else {
cipher = Cipher.getInstance(algorithm.getName());
}
return cipher;
}
/**
* 算法分为加密算法和签名算法，更多算法实现见：<br/>
* <a href="https://docs.oracle.com/javase/8/docs/technotes/guides/security/StandardNames.html#impl">jdk8中的标准算法</a>
*/
public static class Algorithm {
public interface Encryption {
Algorithm AES_ECB_PKCS5 = new Algorithm("AES", "AES/ECB/PKCS5Padding", 128);
Algorithm AES_CBC_PKCS5 = new Algorithm("AES", "AES/CBC/PKCS5Padding", 128);
Algorithm DES_ECB_PKCS5 = new Algorithm("DES", "DES/ECB/PKCS5Padding", 56);
Algorithm DES_CBC_PKCS5 = new Algorithm("DES", "DES/CBC/PKCS5Padding", 56);
Algorithm RSA_ECB_PKCS1 = new Algorithm("RSA", "RSA/ECB/PKCS1Padding", 1024);
Algorithm DSA = new Algorithm("DSA", 1024);
}
public interface Signing {
Algorithm SHA1WithDSA = new Algorithm("SHA1withDSA", 1024);
Algorithm SHA1WithRSA = new Algorithm("SHA1WithRSA", 2048);
Algorithm SHA256WithRSA = new Algorithm("SHA256WithRSA", 2048);
}
@Getter
private String name;
@Getter
private String transformation;
@Getter
private int keySize;
public Algorithm(String name, int keySize) {
this(name, null, keySize);
}
public Algorithm(String name, String transformation, int keySize) {
this.name = name;
this.transformation = transformation;
this.keySize = keySize;
}
}
@Data
@NoArgsConstructor
@AllArgsConstructor
public static class AsymmetricKeyPair {
private String publicKey;
private String privateKey;
}
}
2、测试用例
AsymmetricKeyPair keyPair = CryptoUtils.generateAsymmetricKeyPair(Encryption.RSA_ECB_PKCS1);
String privateKey = keyPair.getPrivateKey();
String publicKey = keyPair.getPublicKey();
System.out.println("生成的私钥为：n" + privateKey);
System.out.println("生成的公钥为：n" + publicKey);
String cipherText = CryptoUtils.encryptByRSA(publicKey, "test");
String plainText = CryptoUtils.decryptByRSA(privateKey, cipherText);
System.out.println("test加密后的密文为：n" + cipherText);
System.out.println("解密后的明文为：" + plainText);
String signature = CryptoUtils.signBySHA256WithRSA(privateKey, "message");
boolean isVerified = CryptoUtils.verifyBySHA256WithRSA(publicKey, "message", signature);
System.out.println("message加签后的签名为：" + signature);
System.out.println("验签是否通过：" + isVerified);
控制台输出如下：
生成的私钥为：
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
生成的公钥为：
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC+E3QapcSQciVEUqjc7YT9fLdkOrc5ncH6EyZGtMsvw4xC9f5gT3XMoMFgX1WCwb8LgVDshuKW3/3XtKZoHPW+/ksDaqqR7Zi8WhKlt3m6L5tEdlBaJtDkv+V+aXVjSrig0wqT9sQtSUn0akvu1jYBRIQiu4UVgcyKYn17y82TbQIDAQAB
test加密后的密文为：
EA19/wkHbdXTc8sfLFhmnp/MWW3PLx2LeYFHWFNdhvY38+Zoa4Ci8HJw8okkxzTfsSkgsiybMaz82rwF9lfcuEWzjbuGeVOvdkI0p/Cv+PDfikMYwOsxA7OqBJ/Hktn25l/ryEv7TxYlMFQ48jB0KPw/0Ivec9qfX2pgnyBl7WM=
解密后的明文为：test
message加签后的签名为：
AByFyRoc/321db16voe9NQaicwkscTOGjBZGefWzB7dMadWXBtUPIK3CUXADLiiesehgAAcDbl06qVz++x/6xeWPCK2ucCfn9dFybZfmAIsn+3TATuDQIFvz/m2cHQAuH9fkmiGgMPOVY/VcILwri3RETuQ+wz4YSmP89o1cFqk=
验签是否通过：true
————————————————
六、前后端加解密、加验签交互测试
1、前端加密，后端解密
这里我们用前端生成的密钥对做测试。
(1) 前端代码
import * as CryptoUtils from '@/utils/cryptoUtils.js';
const {privateKey, publicKey} = CryptoUtils.generateRsaKeyWithPKCS8();
console.log(`生成的私钥为：n${privateKey}`);
console.log(`生成的公钥为：n${publicKey}`);
const cipherText = CryptoUtils.encryptByRSA(publicKey, "test");
console.log(`test加密后的内容为：n${cipherText}`);
————————————————
控制台输出：
生成的私钥为：
-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----
生成的公钥为：
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDL9WnTZijcOK7a9g8vdg2dzZNU
gqxhnrZatLEoC2PGybAcgLz9mTjoolqtsQ1FbvGaUHzPL/PbY3oH67CFHDf2VS3O
vEYnNwSLaPOaEHPYwc/mgpNa13jTHj5ElajWgv5+JCe92ONWYCgHtBr8qjMlDYZP
FWXfkEjQE0r/pRnqdwIDAQAB
-----END PUBLIC KEY-----
test加密后的内容为：
KjcaDKLnBbvxRzuKMysqoz9MHRXCUNIH67+XDiFGTJbM8Rjw4Cei0CzjAPjk2jgAR37Kgh6lX2+Xg8AI9wEmzWr08bt8i2FFxVMrcfOCs5zI1y+2T7G9034f5b0gNx/Pc4dDz+1k453vo0AhCC0vrtb1OfbsRu5oOFns0TqoAMY=
解密后的内容为：test
————————————————
(2) 后端代码
String privateKey = "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";
String cipherText = "KjcaDKLnBbvxRzuKMysqoz9MHRXCUNIH67+XDiFGTJbM8Rjw4Cei0CzjAPjk2jgAR37Kgh6lX2+Xg8AI9wEmzWr08bt8i2FFxVMrcfOCs5zI1y+2T7G9034f5b0gNx/Pc4dDz+1k453vo0AhCC0vrtb1OfbsRu5oOFns0TqoAMY=";
// 解密后的明文应该为test
String plainText = CryptoUtils.decryptByRSA(privateKey, cipherText);
System.out.println("解密后的明文为：" + plainText);
控制台输出如下：
解密后的明文为：test
备注：
- 从前端复制过来的密钥需要去掉—–BEGIN PRIVATE KEY—–前缀。
- 从前端复制过来的密钥带有换行，记得去掉中间的换行符。
2、后端加密，前端解密
这里我们用后端生成的密钥对做测试。
(1) 后端代码
AsymmetricKeyPair keyPair = CryptoUtils.generateAsymmetricKeyPair(Encryption.RSA_ECB_PKCS1);
String privateKey = keyPair.getPrivateKey();
String publicKey = keyPair.getPublicKey();
System.out.println("生成的私钥为：n" + privateKey);
System.out.println("生成的公钥为：n" + publicKey);
String cipherText = CryptoUtils.encryptByRSA(publicKey, "test");
System.out.println("test加密后的内容为：n" + cipherText);
控制台输出为：
生成的私钥为：
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
生成的公钥为：
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCT4fFog6N3YSh1vcPOg+A1/OKRwBtNzyHjhwkns28insirLhwN6mshieyakIForOee7msM/efxGwc88JjtKMvpden5IkV3EaaVP1G1uj1AWyKSTago5ynMPgwOVF1Q5iL9MVzj9+I5Z5GNQ8Z4pqjAJILrfIJ3IHRcTtGqdLrOpQIDAQAB
test加密后的内容为：
RgJxG+VSizKgfLnXjsqzTl9h0cUzm460EyHhdL3/qZLNbd6IVcU1Am+OOsbFd9W8GtNhJiCERybgjCucr4c3/EQLXtF8vNHVMFp9ycDW4T+8FMmFQn0f/+oJ7/i9uEoNd9W8nWJcSRHuTw1+rl4Mc7KnmwvdaTV2ZLOxBG6oAK8=
(2) 前端代码
const privateKey = `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`;
const cipherText = `RgJxG+VSizKgfLnXjsqzTl9h0cUzm460EyHhdL3/qZLNbd6IVcU1Am+OOsbFd9W8GtNhJiCERybgjCucr4c3/EQLXtF8vNHVMFp9ycDW4T+8FMmFQn0f/+oJ7/i9uEoNd9W8nWJcSRHuTw1+rl4Mc7KnmwvdaTV2ZLOxBG6oAK8=`;
const plainText = CryptoUtils.decryptByRSA(privateKey, cipherText);
console.log(`解密后的内容为：${plainText}`);
控制台输出：
解密后的内容为：test
3、前端加签，后端验签
这里我们用前端生成的密钥对做测试。
(1) 前端代码
console.log(`生成的私钥为：n${privateKey}`);
console.log(`生成的公钥为：n${publicKey}`);
const signature = CryptoUtils.signBySHA256WithRSA(privateKey, "test");
console.log(`生成的签名：n${signature}`);
控制台输出如下：
生成的私钥为：
-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----
生成的公钥为：
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8cyflPzf5RPgGTszG88fuVq1g
7t9aCpR/o7YeeADxh2Pgpqr4tHVHrkm79t/LZHpveRk8tZEEc/QjAVr71XTWAu/B
PJmgWjCm/hmSlSEnGenqPIJF8RKAe2t/8umvC/0qUBoGiO/CbJ1RiYo3/hmhrX25
fnSEDMSHOoGzWTjPzwIDAQAB
-----END PUBLIC KEY-----
生成的签名：
Q9Mtq3gxi2YJ07FQtbry5zxGljomzKQNewhj10Ba10b3roAAdQUzqd+QyP7rqARdPQgt0ClDgvtaL2TNYLc4URh7E3Kgx8T6pSFlPnU/b3cfCoVRPrr/gJBrsCkbNMITNXpVQpwIYe3P1z+OrCUHuaQR82yCVUz3y43oOiE6qIY=
(2) 后端代码
String signature = "Q9Mtq3gxi2YJ07FQtbry5zxGljomzKQNewhj10Ba10b3roAAdQUzqd+QyP7rqARdPQgt0ClDgvtaL2TNYLc4URh7E3Kgx8T6pSFlPnU/b3cfCoVRPrr/gJBrsCkbNMITNXpVQpwIYe3P1z+OrCUHuaQR82yCVUz3y43oOiE6qIY=";
boolean isVerified = CryptoUtils.verifyBySHA256WithRSA(publicKey, "test", signature);
System.out.println("是否验签通过：" + isVerified);
控制台输出：
是否验签通过：true
4、后端加签，前端验签
这里我们用后端生成的密钥对做测试。
(1) 后端代码
AsymmetricKeyPair keyPair = CryptoUtils.generateAsymmetricKeyPair(Encryption.RSA_ECB_PKCS1);
String privateKey = keyPair.getPrivateKey();
String publicKey = keyPair.getPublicKey();
System.out.println("生成的私钥为：n" + privateKey);
System.out.println("生成的公钥为：n" + publicKey);
String signature = CryptoUtils.signBySHA256WithRSA(privateKey, "test");
System.out.println("生成的签名为：n" + signature);
控制台输出如下：
生成的私钥为：
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
生成的公钥为：
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCsdYk9Dm8kSgtOsH/ljdb/S00MHevF9W/FOfmQIfUH+5u+x4kLS4Ncvdb9G+9A6/x0T+47hixU5yufjSTHIxjag3wxagkLQN3mptlAAW8B0u+qkRUG0oOUCgKbw3Hzmbalpm8MEgzJCORp2Cm0jtxGWQmAQV86ZWmykAinJhijowIDAQAB
生成的签名为：
JQ2FWaAbHWIkl4uSIxyMNbARFzSNKc7mOtXidm7hCRN85D8DVgZll02DYcWRSnn/ejOOxOrEPF8AcYHWx1repHh/jHcwv2focjF3Yne7NkQ4yGvgILDD2s1BIEfU0EH3tFLMIebyU8V54eMMtjDLQ65LZB6PH+5X8s3F6yAPI70=
(2) 前端代码
const publicKey = `
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCsdYk9Dm8kSgtOsH/ljdb/S00MHevF9W/FOfmQIfUH+5u+x4kLS4Ncvdb9G+9A6/x0T+47hixU5yufjSTHIxjag3wxagkLQN3mptlAAW8B0u+qkRUG0oOUCgKbw3Hzmbalpm8MEgzJCORp2Cm0jtxGWQmAQV86ZWmykAinJhijowIDAQAB
-----END PUBLIC KEY-----`;
const signature = `JQ2FWaAbHWIkl4uSIxyMNbARFzSNKc7mOtXidm7hCRN85D8DVgZll02DYcWRSnn/ejOOxOrEPF8AcYHWx1repHh/jHcwv2focjF3Yne7NkQ4yGvgILDD2s1BIEfU0EH3tFLMIebyU8V54eMMtjDLQ65LZB6PH+5X8s3F6yAPI70=`;
const message = `test`;
const isVerified = CryptoUtils.verifyBySHA256WithRSA(publicKey, signature, message);
console.log(`是否验签通过：${isVerified}`);
控制台输出如下：
是否验签通过：true
————————————————
备注：因为我们在前端解析密钥时读取的是标准pem格式密钥，所以从后端复制过来的公钥一定要加上
—–BEGIN PUBLIC KEY—–前缀和—–END PUBLIC KEY—–后缀，否则会报错。
原文地址:https://blog.csdn.net/nalanxiaoxiao2011/article/details/135415457
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