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package com.dxy.library.util.cipher.hash;

import com.dxy.library.util.cipher.constant.Algorithm;
import com.dxy.library.util.common.StringUtils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * SHA工具类
 * Secure Hash Algorithm（Secure Hash Algorithm）
 * @author duanxinyuan
 * 2019/2/15 18:32
 */
public class SHAUtils {

    /**
     * SHA加密
     */
    public static String sha(String data) {
        return sha(data, Algorithm.SHA);
    }

    /**
     * SHA加密
     */
    public static byte[] sha(byte[] data) {
        return sha(data, Algorithm.SHA);
    }

    /**
     * SHA1加密
     */
    public static String sha1(String data) {
        return sha(data, Algorithm.SHA1);
    }

    /**
     * SHA1加密
     */
    public static byte[] sha1(byte[] data) {
        return sha(data, Algorithm.SHA1);
    }

    /**
     * SHA224加密
     */
    public static String sha224(String data) {
        return sha(data, Algorithm.SHA224);
    }

    /**
     * SHA224加密
     */
    public static byte[] sha224(byte[] data) {
        return sha(data, Algorithm.SHA224);
    }

    /**
     * SHA256加密
     */
    public static String sha256(String data) {
        return sha(data, Algorithm.SHA256);
    }

    /**
     * SHA256加密
     */
    public static byte[] sha256(byte[] data) {
        return sha(data, Algorithm.SHA256);
    }

    /**
     * SHA384加密
     */
    public static String sha384(String data) {
        return sha(data, Algorithm.SHA384);
    }

    /**
     * SHA384加密
     */
    public static byte[] sha384(byte[] data) {
        return sha(data, Algorithm.SHA384);
    }

    /**
     * SHA512加密
     */
    public static String sha512(String data) {
        return sha(data, Algorithm.SHA512);
    }

    /**
     * SHA512加密
     */
    public static byte[] sha512(byte[] data) {
        return sha(data, Algorithm.SHA512);
    }

    /**
     * 字符串 SHA 加密
     * @param data 加密内容
     * @param algorithm 算法类型
     * @return 密文（16进制）
     */
    public static String sha(String data, Algorithm algorithm) {
        byte[] bytes = sha(data.getBytes(), algorithm);
        return StringUtils.toHex(bytes);
    }

    /**
     * 字符串 SHA 加密
     * @param data 加密内容
     * @param algorithm 算法类型
     * @return 密文
     */
    public static byte[] sha(byte[] data, Algorithm algorithm) {
        MessageDigest digest;
        try {
            digest = MessageDigest.getInstance(algorithm.getAlgorithm());
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("encryptSHA error", e);
        }
        digest.update(data);
        return digest.digest();
    }


}