57 lines
1.7 KiB
Java
57 lines
1.7 KiB
Java
package xin.merlin.myblog_server.utils;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Component;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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@Component
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public class SHA256Util {
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/**
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* 对输入字符串进行SHA-256加密
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* @param input 输入字符串
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* @return 加密后的十六进制字符串
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*/
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public String encryptSHA256(String input) {
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try {
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MessageDigest digest = MessageDigest.getInstance("SHA-256");
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byte[] encodedhash = digest.digest(input.getBytes());
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return bytesToHex(encodedhash);
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} catch (NoSuchAlgorithmException e) {
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throw new RuntimeException("SHA-256 algorithm not found", e);
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}
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}
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/**
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* 将字节数组转换为十六进制字符串
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* @param hash 字节数组
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* @return 十六进制字符串
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*/
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private String bytesToHex(byte[] hash) {
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StringBuilder hexString = new StringBuilder(2 * hash.length);
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for (int i = 0; i < hash.length; i++) {
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String hex = Integer.toHexString(0xff & hash[i]);
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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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return hexString.toString();
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}
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/**
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* 使用用户ID生成盐值，并对密码进行加密
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* @param password 用户输入的密码
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* @return 加密后的密码哈希值
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*/
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@Value("${jwt.salt}")
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private String salt;
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public String encryptPassword(String password) {
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String s = encryptSHA256(salt);
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// 将盐值与密码拼接后进行SHA-256加密
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return encryptSHA256(s +s + password + s);
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}
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}
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