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建设公司网站大概需要多少钱十大营销案例分析

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建设公司网站大概需要多少钱,十大营销案例分析,网站建设专员岗位职责,最权威的品牌排行榜网站SM2加签、验签，加密、解密一、前言 ‌简介 SM2加密方式‌是一种基于椭圆曲线密码学（ECC）的非对称加密算法，由中国国家密码管理局发布，主要用于保障数据在传输和存储过程中的安全。SM2算法的核心是椭圆曲线方程y^2 x…

SM2加签、验签，加密、解密

一、前言

‌简介
SM2加密方式‌是一种基于椭圆曲线密码学（ECC）的非对称加密算法，由中国国家密码管理局发布，主要用于保障数据在传输和存储过程中的安全。SM2算法的核心是椭圆曲线方程y^2
= x^3 + ax + b，通过点的倍增操作生成公钥和私钥。私钥是一个秘密整数，公钥由私钥乘以基点得到。SM2算法的安全性基于椭圆曲线离散对数问题，即使知道公钥也无法轻易推导出私钥。‌
工作原理
SM2算法的工作原理基于椭圆曲线的数学特性。首先，选择一个合适的椭圆曲线和一个基点，然后用户随机生成一个私钥，使用私钥与基点进行标量乘法运算得到公钥。公钥和私钥一一对应，用于加密、解密和数字签名验证。
加密和解密过程
SM2算法本身主要用于数字签名和密钥交换，但它可以与其他对称加密算法结合使用进行数据的加密和解密。在加密过程中，使用共享密钥对数据进行对称加密；在解密过程中，使用相同的共享密钥对加密后的数据进行解密。
安全性
SM2算法的安全性基于椭圆曲线离散对数问题，其破译或求解难度基本上是指数级的，因此安全性较高。SM2推荐使用256位密钥长度，其加密强度等同于3072位RSA证书，而业界普遍采用的RSA证书通常为2048位。此外，SM2在签名和密钥交换方面采取了更为安全的机制，不同于国际标准的ECDSA和ECDH。
应用场景
SM2算法广泛应用于数据加密、数字签名、密钥交换等场景，特别适用于需要高安全性和高效性的场合，如金融、政府和物联网等领域。在实际应用中，SM2可以用于加密敏感数据，确保只有拥有相应私钥的接收方可以解密和访问原始数据。

二、业务流程

在这里插入图片描述

三、使用示例

2.1 引入包

  <dependency><groupId>org.bouncycastle</groupId><artifactId>bcprov-jdk18on</artifactId><version>1.78.1</version></dependency>

2.2 java工具类

public class EnAndDecrypt {private static final Logger log = LoggerFactory.getLogger(EnAndDecrypt.class);//生成的私钥static String privateKey = "1e58de0096c2fbcf7d251d63eb3432d2648b21489fd53d12d8878d55653d62fe";//生成的公钥static String publicKey = "046fbfab13134b3360493dfcbc090bf9d1094af8d95692331b3a60adda116ead29f323285e556083aae490a2d58130daf12ae7ca2a39732ada84f2c100ac47d4fa";//固定写法private static final X9ECParameters curveParams = GMNamedCurves.getByName("sm2p256v1");private static final ECDomainParameters domainParams = new ECDomainParameters(curveParams.getCurve(), curveParams.getG(), curveParams.getN(), curveParams.getH());public static void main(String[] args) throws Exception {//生成密钥对(私钥、公钥)generateKeyPair();//私钥加签privateSign();//验签verifyData();//加密encrypt();//解密decryptData();}public static void encrypt()throws Exception{LineDTO line = LineDTO.builder().type(Integer.valueOf(1)).startRegionCode("444444").startRegionName("成都").endRegionCode("454444").endRegionName("巴中").lineId(UUID.randomUUID().toString().replaceAll("-", "")).lineName("成巴").lineType(Integer.valueOf(2)).lineLevel(Integer.valueOf(2)).firstStationId(UUID.randomUUID().toString().replaceAll("-", "")).firstStationName("成都南站").lastStationId(UUID.randomUUID().toString().replaceAll("-", "")).lastStationName("巴中北站").lineStatus(Integer.valueOf(1)).build();String bizContent = encrypt(JSON.toJSONString(Arrays.asList(new LineDTO[] { line })));log.info("加密后密文:{}", bizContent);}public static String encrypt(String str) throws Exception {return encrypt(publicKey, str);}public static String encrypt(String publicKeyHex, String plainText) throws Exception {byte[] publicKeyBytes = Hex.decode(publicKeyHex);byte[] textBytes = plainText.getBytes(StandardCharsets.UTF_8);ECPoint point = domainParams.getCurve().decodePoint(publicKeyBytes);ECPublicKeyParameters publicKeyParams = new ECPublicKeyParameters(point, domainParams);SM2Engine sm2Engine = new SM2Engine(SM2Engine.Mode.C1C3C2);sm2Engine.init(true, new ParametersWithRandom(publicKeyParams, new SecureRandom()));byte[] encryptedData = sm2Engine.processBlock(textBytes, 0, textBytes.length);return Hex.toHexString(encryptedData);}public static void privateSign() throws Exception {String bizContent = "";CommonDTO dto = CommonDTO.builder().Interface("dzky_line").encryType("SM2").timestamp(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date())).bizContent(bizContent).build();String sign = privateSign(dto.toSignText());System.out.println("私钥签名后的结果：" + sign);}public static String privateSign(String str) throws Exception {return sign(str, privateKey);}public static String sign(String plainText, String privateKeyHex) throws Exception {System.out.println("签名的原字符串:" + plainText);byte[] textBytes = plainText.getBytes(StandardCharsets.UTF_8);BigInteger d = new BigInteger(privateKeyHex, 16);ECPrivateKeyParameters privateKeyParams = new ECPrivateKeyParameters(d, domainParams);SM2Signer signer = new SM2Signer();signer.init(true, privateKeyParams);signer.update(textBytes, 0, textBytes.length);byte[] sign = signer.generateSignature();return Hex.toHexString(sign);}public static Map<String, String> generateKeyPair() {ECKeyPairGenerator generator = new ECKeyPairGenerator();ECKeyGenerationParameters params = new ECKeyGenerationParameters(domainParams, new SecureRandom());generator.init(params);AsymmetricCipherKeyPair keyPair = generator.generateKeyPair();ECPrivateKeyParameters privateKey = (ECPrivateKeyParameters)keyPair.getPrivate();ECPublicKeyParameters publicKey = (ECPublicKeyParameters)keyPair.getPublic();String privateKeyHex = privateKey.getD().toString(16);String publicKeyHex = Hex.toHexString(publicKey.getQ().getEncoded(false));Map map = new HashMap();map.put("publicKey", publicKeyHex);map.put("privateKey", privateKeyHex);System.out.println("私钥：" + privateKeyHex);System.out.println("公钥：" + publicKeyHex);return map;}public static void decryptData() throws Exception{String decrypt = decryptData("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");System.out.println("解密：" + decrypt);}public static String decryptData(String str) throws Exception {String decrypt = decrypt(privateKey, str);return decrypt;}public static String decrypt(String privateKeyHex, String encryptedHex) throws Exception {byte[] encryptedData = Hex.decode(encryptedHex);BigInteger d = new BigInteger(privateKeyHex, 16);ECPrivateKeyParameters privateKeyParams = new ECPrivateKeyParameters(d, domainParams);SM2Engine sm2Engine = new SM2Engine(SM2Engine.Mode.C1C3C2);sm2Engine.init(false, privateKeyParams);byte[] decryptedData = sm2Engine.processBlock(encryptedData, 0, encryptedData.length);return new String(decryptedData, StandardCharsets.UTF_8);}public static boolean verifyData() throws Exception{boolean verify = verifyData("ak=e511ff01-4737-4edf-b439-568c1b8c538e&encryType=SM2&interface=dzky_line&timestamp=2025-01-24 13:48:34", "3045022100d0c62b30c5da211989da8b2a4eb7b7f2d08aee895fd01e1751e0fe1fd9b4fb1702202f5e1f11fd7cae454f21e59382223744485f75152c9ce77eea9a18f7015bb80b");System.out.println("验签结果：" + verify);return verify;}public static boolean verifyData(String str, String enSign) throws Exception{return verify(str, enSign, publicKey);}public static boolean verify(String plainText, String signHex, String publicKeyHex)throws Exception{byte[] signature = Hex.decode(signHex);byte[] publicKeyBytes = Hex.decode(publicKeyHex);byte[] textBytes = plainText.getBytes(StandardCharsets.UTF_8);ECPoint point = domainParams.getCurve().decodePoint(publicKeyBytes);ECPublicKeyParameters publicKeyParams = new ECPublicKeyParameters(point, domainParams);SM2Signer signer = new SM2Signer();signer.init(false, publicKeyParams);signer.update(textBytes, 0, textBytes.length);return signer.verifySignature(signature);}
}

2.3 工具dto

@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
public class CommonDTO {private String ak;private String Interface;private String encryType;private String sign;private String timestamp;private String bizContent;public String toSignText(){StringBuilder sb = new StringBuilder();boolean firstParam = true;if (StringUtils.isNotBlank(this.ak)) {sb.append("ak=").append(this.ak);firstParam = false;}if (StringUtils.isNotBlank(this.bizContent)) {if (!firstParam) {sb.append("&");}sb.append("bizContent=").append(this.bizContent);firstParam = false;}if (StringUtils.isNotBlank(this.encryType)) {if (!firstParam) {sb.append("&");}sb.append("encryType=").append(this.encryType);firstParam = false;}if (StringUtils.isNotBlank(this.Interface)) {if (!firstParam) {sb.append("&");}sb.append("interface=").append(this.Interface);firstParam = false;}if (StringUtils.isNotBlank(this.timestamp)) {if (!firstParam) {sb.append("&");}sb.append("timestamp=").append(this.timestamp);}return sb.toString();}
}

@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
public class LineDTO {private Integer type;private String orgcode;private String orgname;private String startRegionCode;private String startRegionName;private String endRegionCode;private String endRegionName;private String lineId;private String lineName;private Integer lineType;private Integer lineLevel;private String firstStationId;private String firstStationName;private String lastStationId;private String lastStationName;private Integer lineStatus;private Double mileage;private Double hghwaymile;private String lineDescription;private List<Integer> otaNames;private Integer sendSMS;private Object reserved;
}