package com.dy.pipIrrWechat.util;
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import javax.crypto.Mac;
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import javax.crypto.spec.SecretKeySpec;
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import java.nio.charset.StandardCharsets;
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import java.security.InvalidKeyException;
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import java.security.NoSuchAlgorithmException;
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/**
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* @author ZhuBaoMin
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* @date 2024-07-15 10:19
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* @LastEditTime 2024-07-15 10:19
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* @Description
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*/
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public class HmacSha256 {
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public static String getSignature(String secretKey, String data) throws NoSuchAlgorithmException, InvalidKeyException {
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// 创建密钥对象
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byte[] keyBytes = secretKey.getBytes(StandardCharsets.UTF_8);
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SecretKeySpec secretKeySpec = new SecretKeySpec(keyBytes, "HmacSHA256");
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// 创建Mac对象并初始化
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Mac mac = Mac.getInstance("HmacSHA256");
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mac.init(secretKeySpec);
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// 将待加密的数据转换为字节数组
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byte[] dataBytes = data.getBytes(StandardCharsets.UTF_8);
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// 使用密钥对数据进行加密
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byte[] encryptedBytes = mac.doFinal(dataBytes);
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// 将加密后的结果转换为十六进制字符串
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StringBuilder hexString = new StringBuilder();
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for (byte b : encryptedBytes) {
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String hex = Integer.toHexString(0xff & b);
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if (hex.length() == 1) {
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hexString.append('0');
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}
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hexString.append(hex);
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}
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String hmacSha256 = hexString.toString();
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return hmacSha256;
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}
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}
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