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// Copyright (c) Richasy. All rights reserved. | ||
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#pragma warning disable SA1300 // Element should begin with upper-case letter | ||
using System.Security.Cryptography; | ||
using System.Text; | ||
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namespace Bili.Models.gRPC | ||
{ | ||
/// <summary> | ||
/// BUVID. | ||
/// </summary> | ||
public class Buvid | ||
{ | ||
private readonly string _mac; | ||
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/// <summary> | ||
/// Initializes a new instance of the <see cref="Buvid"/> class. | ||
/// </summary> | ||
/// <param name="macAddress">MAC 地址.</param> | ||
public Buvid(string macAddress) => _mac = macAddress; | ||
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/// <summary> | ||
/// 生成 buvid. | ||
/// </summary> | ||
/// <returns>buvid.</returns> | ||
public string Generate() | ||
{ | ||
var buvidPrefix = "XY"; | ||
var inputStrMd5 = GetMd5Hash(_mac.Replace(":", string.Empty)); | ||
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var buvidRaw = new StringBuilder(); | ||
buvidRaw.Append(buvidPrefix); | ||
buvidRaw.Append(inputStrMd5[2]); | ||
buvidRaw.Append(inputStrMd5[12]); | ||
buvidRaw.Append(inputStrMd5[22]); | ||
buvidRaw.Append(inputStrMd5); | ||
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return buvidRaw.ToString(); | ||
} | ||
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private static string GetMd5Hash(string input) | ||
{ | ||
using (var md5 = MD5.Create()) | ||
{ | ||
var inputBytes = Encoding.UTF8.GetBytes(input); | ||
var hashBytes = md5.ComputeHash(inputBytes); | ||
var sb = new StringBuilder(); | ||
foreach (var b in hashBytes) | ||
{ | ||
sb.Append(b.ToString("x2")); | ||
} | ||
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return sb.ToString(); | ||
} | ||
} | ||
} | ||
} |