64 lines
2.0 KiB
C#
64 lines
2.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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namespace LightSetupMd5
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{
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internal class CommonHelper
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{ /// <summary>
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/// 通过字符串获取MD5值，返回32位字符串。
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string GetMD5String(string str)
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{
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MD5 md5 = MD5.Create();
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byte[] data = Encoding.UTF8.GetBytes(str);
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byte[] data2 = md5.ComputeHash(data);
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return GetbyteToString(data2);
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//return BitConverter.ToString(data2).Replace("-", "").ToLower();
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}
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/// <summary>
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/// 获取MD5值。HashAlgorithm.Create("MD5") 或 MD5.Create() HashAlgorithm.Create("SHA256") 或 SHA256.Create()
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/// </summary>
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/// <param name="str"></param>
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/// <param name="hash"></param>
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/// <returns></returns>
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public static string GetMD5String(string str, HashAlgorithm hash)
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{
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byte[] data = Encoding.UTF8.GetBytes(str);
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byte[] data2 = hash.ComputeHash(data);
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return GetbyteToString(data2);
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//return BitConverter.ToString(data2).Replace("-", "").ToLower();
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}
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public static string GetMD5FromFile(string path)
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{
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MD5 md5 = MD5.Create();
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if (!File.Exists(path))
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{
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return "";
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}
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FileStream stream = File.OpenRead(path);
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byte[] data2 = md5.ComputeHash(stream);
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return GetbyteToString(data2);
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//return BitConverter.ToString(data2).Replace("-", "").ToLower();
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}
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private static string GetbyteToString(byte[] data)
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{
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < data.Length; i++)
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{
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sb.Append(data[i].ToString("x2"));
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}
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return sb.ToString();
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}
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}
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}
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