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+package com.ruoyi.common.utils.sign;
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+
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+import org.apache.commons.codec.binary.Base64;
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+
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+import javax.crypto.Cipher;
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+import java.security.KeyFactory;
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+import java.security.KeyPair;
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+import java.security.KeyPairGenerator;
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+import java.security.NoSuchAlgorithmException;
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+import java.security.PrivateKey;
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+import java.security.PublicKey;
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+import java.security.interfaces.RSAPrivateKey;
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+import java.security.interfaces.RSAPublicKey;
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+import java.security.spec.PKCS8EncodedKeySpec;
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+import java.security.spec.X509EncodedKeySpec;
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+
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+/**
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+ * @Description: TODO
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+ * @Author: huangcheng
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+ * @Date: 2023/1/8
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+ * @Version V1.0
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+ */
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+public class RsaUtils {
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+ // Rsa 私钥
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+ public static String privateKey = "MIIBVAIBADANBgkqhkiG9w0BAQEFAASCAT4wggE6AgEAAkEAqhHyZfSsYourNxaY"
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+ + "7Nt+PrgrxkiA50efORdI5U5lsW79MmFnusUA355oaSXcLhu5xxB38SMSyP2KvuKN"
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+ + "PuH3owIDAQABAkAfoiLyL+Z4lf4Myxk6xUDgLaWGximj20CUf+5BKKnlrK+Ed8gA"
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+ + "kM0HqoTt2UZwA5E2MzS4EI2gjfQhz5X28uqxAiEA3wNFxfrCZlSZHb0gn2zDpWow"
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+ + "cSxQAgiCstxGUoOqlW8CIQDDOerGKH5OmCJ4Z21v+F25WaHYPxCFMvwxpcw99Ecv"
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+ + "DQIgIdhDTIqD2jfYjPTY8Jj3EDGPbH2HHuffvflECt3Ek60CIQCFRlCkHpi7hthh"
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+ + "YhovyloRYsM+IS9h/0BzlEAuO0ktMQIgSPT3aFAgJYwKpqRYKlLDVcflZFCKY7u3"
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+ + "UP8iWi1Qw0Y=";
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+
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+ /**
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+ * 私钥解密
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+ *
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+ * @param text 待解密的文本
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+ * @return 解密后的文本
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+ */
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+ public static String decryptByPrivateKey(String text) throws Exception {
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+ return decryptByPrivateKey(privateKey, text);
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+ }
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+
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+ /**
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+ * 公钥解密
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+ *
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+ * @param publicKeyString 公钥
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+ * @param text 待解密的信息
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+ * @return 解密后的文本
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+ */
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+ public static String decryptByPublicKey(String publicKeyString, String text) throws Exception {
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+ X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(Base64.decodeBase64(publicKeyString));
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+ KeyFactory keyFactory = KeyFactory.getInstance("RSA");
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+ PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
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+ Cipher cipher = Cipher.getInstance("RSA");
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+ cipher.init(Cipher.DECRYPT_MODE, publicKey);
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+ byte[] result = cipher.doFinal(Base64.decodeBase64(text));
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+ return new String(result);
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+ }
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+
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+ /**
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+ * 私钥加密
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+ *
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+ * @param privateKeyString 私钥
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+ * @param text 待加密的信息
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+ * @return 加密后的文本
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+ */
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+ public static String encryptByPrivateKey(String privateKeyString, String text) throws Exception {
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+ PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(Base64.decodeBase64(privateKeyString));
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+ KeyFactory keyFactory = KeyFactory.getInstance("RSA");
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+ PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
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+ Cipher cipher = Cipher.getInstance("RSA");
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+ cipher.init(Cipher.ENCRYPT_MODE, privateKey);
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+ byte[] result = cipher.doFinal(text.getBytes());
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+ return Base64.encodeBase64String(result);
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+ }
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+
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+ /**
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+ * 私钥解密
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+ *
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+ * @param privateKeyString 私钥
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+ * @param text 待解密的文本
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+ * @return 解密后的文本
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+ */
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+ public static String decryptByPrivateKey(String privateKeyString, String text) throws Exception {
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+ PKCS8EncodedKeySpec pkcs8EncodedKeySpec5 = new PKCS8EncodedKeySpec(Base64.decodeBase64(privateKeyString));
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+ KeyFactory keyFactory = KeyFactory.getInstance("RSA");
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+ PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec5);
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+ Cipher cipher = Cipher.getInstance("RSA");
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+ cipher.init(Cipher.DECRYPT_MODE, privateKey);
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+ byte[] result = cipher.doFinal(Base64.decodeBase64(text));
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+ return new String(result);
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+ }
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+
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+ /**
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+ * 公钥加密
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+ *
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+ * @param publicKeyString 公钥
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+ * @param text 待加密的文本
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+ * @return 加密后的文本
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+ */
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+ public static String encryptByPublicKey(String publicKeyString, String text) throws Exception {
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+ X509EncodedKeySpec x509EncodedKeySpec2 = new X509EncodedKeySpec(Base64.decodeBase64(publicKeyString));
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+ KeyFactory keyFactory = KeyFactory.getInstance("RSA");
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+ PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec2);
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+ Cipher cipher = Cipher.getInstance("RSA");
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+ cipher.init(Cipher.ENCRYPT_MODE, publicKey);
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+ byte[] result = cipher.doFinal(text.getBytes());
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+ return Base64.encodeBase64String(result);
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+ }
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+
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+ /**
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+ * 构建RSA密钥对
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+ *
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+ * @return 生成后的公私钥信息
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+ */
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+ public static RsaKeyPair generateKeyPair() throws NoSuchAlgorithmException {
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+ KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
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+ keyPairGenerator.initialize(1024);
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+ KeyPair keyPair = keyPairGenerator.generateKeyPair();
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+ RSAPublicKey rsaPublicKey = (RSAPublicKey) keyPair.getPublic();
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+ RSAPrivateKey rsaPrivateKey = (RSAPrivateKey) keyPair.getPrivate();
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+ String publicKeyString = Base64.encodeBase64String(rsaPublicKey.getEncoded());
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+ String privateKeyString = Base64.encodeBase64String(rsaPrivateKey.getEncoded());
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+ return new RsaKeyPair(publicKeyString, privateKeyString);
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+ }
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+
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+ /**
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+ * RSA密钥对对象
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+ */
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+ public static class RsaKeyPair {
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+ private final String publicKey;
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+ private final String privateKey;
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+
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+ public RsaKeyPair(String publicKey, String privateKey) {
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+ this.publicKey = publicKey;
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+ this.privateKey = privateKey;
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+ }
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+
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+ public String getPublicKey() {
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+ return publicKey;
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+ }
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+
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+ public String getPrivateKey() {
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+ return privateKey;
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+ }
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+ }
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+
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+}
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