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994 lines
35 KiB
994 lines
35 KiB
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.IO;
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using System.IO.Compression;
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using System.Reflection;
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using System.Security.Cryptography;
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using Externals.Compression.Zip;
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using Externals.Compression.Checksums;
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using Apewer.Internals;
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using System.Diagnostics;
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// using System.Runtime.Remoting.Messaging;
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namespace Apewer
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{
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/// <summary>二进制。</summary>
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public class BinaryUtility
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{
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/// <summary>空字节数组,每次获取都将创建新的引用。</summary>
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public static byte[] EmptyBytes { get { return Constant.EmptyBytes; } }
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#region Bytes Array
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/// <summary>创建数组,元素值为零。</summary>
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public static byte[] ZeroArray(int length = 0)
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{
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if (length < 1) return new byte[0];
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var array = new byte[length];
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for (int i = 0; i < length; i++) array[i] = 0;
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return array;
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}
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/// <summary>所有字节取反。</summary>
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public static byte[] Adverse(byte[] bytes)
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{
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if (bytes == null || bytes.Length < 1) return Constant.EmptyBytes;
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byte[] adverse = new byte[bytes.Length];
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for (int i = 0; i < bytes.Length; i++) adverse[i] = Convert.ToByte(byte.MaxValue - bytes[i]);
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return adverse;
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}
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/// <summary>克隆字节数组。当源为 NULL 时,将获取零元素字节数组。</summary>
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public static byte[] Clone(byte[] bytes)
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{
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if (bytes == null || bytes.LongLength < 0L) return Constant.EmptyBytes;
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var result = new byte[bytes.LongLength];
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bytes.CopyTo(result, 0L);
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return result;
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}
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/// <summary>为文本数据添加 BOM 字节,若已存在则忽略。</summary>
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public static byte[] AddTextBom(params byte[] text)
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{
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var bom = new byte[] { 0xEF, 0xBB, 0xBF };
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if (text == null || text.LongLength < 1L) return bom;
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if (text.LongLength >= 3L && text[0] == 0xEF && text[1] == 0xBB && text[2] == 0xBF)
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{
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// contains bom
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var array = new byte[text.LongLength];
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Array.Copy(text, 0L, array, 0L, text.LongLength);
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return array;
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}
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else
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{
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// add bom
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var array = new byte[text.LongLength + 3L];
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Array.Copy(bom, 0L, array, 0L, 3L);
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Array.Copy(text, 0L, array, 3L, text.LongLength);
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return array;
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}
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}
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/// <summary>去除文本数据的 BOM 字节,若不存在则忽略。</summary>
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public static byte[] WipeTextBom(byte[] bytes)
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{
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if (bytes == null) return Constant.EmptyBytes;
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var length = bytes.Length;
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if (length >= 3)
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{
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if ((bytes[0] == 0xEF) && (bytes[1] == 0xBB) && (bytes[2] == 0xBF))
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{
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var memory = new MemoryStream();
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memory.Write(bytes, 3, length - 3);
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var result = memory.ToArray();
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memory.Dispose();
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return result;
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}
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}
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return bytes;
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}
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/// <summary>确定此字节数组实例的开头是否与指定的字节数组匹配。</summary>
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public static bool StartsWith(byte[] bytes, params byte[] head)
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{
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var data = bytes;
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if (data == null) return false;
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if (head == null) return false;
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var datalength = data.LongLength;
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var headlength = head.LongLength;
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if (datalength < headlength) return false;
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if (headlength < 1L) return true;
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for (long i = 0; i < head.LongLength; i++)
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{
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if (data[i] != head[i]) return false;
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}
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return true;
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}
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/// <summary>确定此字节数组实例的结尾是否与指定的字节数组匹配。</summary>
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public static bool EndsWith(byte[] bytes, params byte[] head)
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{
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var data = bytes;
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if (data == null) return false;
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if (head == null) return false;
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var datalength = data.LongLength;
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var headlength = head.LongLength;
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if (datalength < headlength) return false;
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if (headlength < 1L) return true;
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for (long i = 0; i < headlength; i++)
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{
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var dataindex = datalength - i - 1;
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var headindex = headlength - i - 1;
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if (data[dataindex] != head[headindex]) return false;
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}
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return true;
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}
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#endregion
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#region Text
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/// <summary>将字节数组转换为十六进制文本。</summary>
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public static string ToHex(params byte[] bytes)
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{
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int length = bytes.Length;
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if (length > 0)
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{
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var sb = new StringBuilder();
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for (int i = 0; i < length; i++)
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{
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sb.Append(Constant.HexCollection[bytes[i] / 16]);
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sb.Append(Constant.HexCollection[bytes[i] % 16]);
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}
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return sb.ToString();
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}
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return "";
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}
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/// <summary>将十六进制文本转换为字节数组。</summary>
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public static byte[] FromHex(string hex)
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{
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if (string.IsNullOrEmpty(hex) || hex.Length < 2) return Constant.EmptyBytes;
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if (hex.Length % 2 != 0) return Constant.EmptyBytes;
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var lower = hex.ToLower().ToCharArray();
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var half = lower.Length / 2;
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var bytes = new byte[half];
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for (var i = 0; i < half; i++)
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{
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var offset = i * 2;
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var h = Constant.HexCollection.IndexOf(lower[offset]);
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var l = Constant.HexCollection.IndexOf(lower[offset + 1]);
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if (h < 0 || l < 0) return Constant.EmptyBytes;
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bytes[i] = Convert.ToByte((h * 16) + l);
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}
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return bytes;
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}
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/// <summary>将字节数组格式化为大写十六进制字符串。</summary>
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public static string ToX2(params byte[] bytes)
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{
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if (bytes == null) return "";
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var sb = new StringBuilder();
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for (int i = 0; i < bytes.Length; i++)
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{
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sb.Append(bytes[i].ToString("X2"));
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}
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return sb.ToString();
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}
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/// <summary>Byte[] -> Base64</summary>
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public static string ToBase64(params byte[] bytes)
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{
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if (bytes.Length < 1) return Constant.EmptyString;
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try { return Convert.ToBase64String(bytes); }
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catch { return Constant.EmptyString; }
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}
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/// <summary>Base64 -> Byte[]</summary>
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public static byte[] FromBase64(string base64)
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{
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if (string.IsNullOrEmpty(base64)) return Constant.EmptyBytes;
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try { return Convert.FromBase64String(base64); }
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catch { return Constant.EmptyBytes; }
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}
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/// <summary>转换字节数组为文本,默认使用 UTF-8 代码页。</summary>
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public static string ToText(byte[] bytes, Encoding encoding = null)
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{
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if (bytes.Length < 1) return Constant.EmptyString;
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try { return (encoding ?? Encoding.UTF8).GetString(bytes); }
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catch { return Constant.EmptyString; }
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}
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/// <summary>转换文本为字节数组,默认使用 UTF-8 代码页。</summary>
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public static byte[] FromText(string text, Encoding encoding = null)
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{
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if (string.IsNullOrEmpty(text)) return Constant.EmptyBytes;
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try { return (encoding ?? Encoding.UTF8).GetBytes(text); }
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catch { return Constant.EmptyBytes; }
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}
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/// <summary>检查字节数组包含 UTF-8 BOM 头。</summary>
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public static bool ContainsBOM(byte[] bytes)
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{
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if (bytes == null) return false;
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if (bytes.LongLength < 3L) return false;
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return bytes[0L] == 0xEF && bytes[1L] == 0xBB && bytes[2L] == 0xBF;
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}
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/// <summary>检查字节数组是 UTF-8 文本。可指定检查的最大字节长度。</summary>
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/// <param name="bytes">要检查的字节数组。</param>
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/// <param name="offset">已检查的偏移量。</param>
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/// <param name="checkLength">检查的最大字节长度。</param>
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public static bool IsUTF8(byte[] bytes, Class<int> offset, int checkLength = 1048576)
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{
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return IsUTF8(bytes, offset, checkLength);
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}
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/// <summary>检查字节数组是 UTF-8 文本,默认最多检测 1MB 数据。</summary>
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/// <param name="bytes">要检查的字节数组。</param>
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/// <param name="checkLength">检查的最大字节长度,指定为 0 将不限制检查长度。</param>
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/// <param name="offset">已检查的偏移量,用于调试。</param>
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public static bool IsUTF8(byte[] bytes, int checkLength = 1048576, Class<int> offset = null)
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{
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// UTF8在Unicode的基础上制定了这样一套规则:
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// 1.对于单字节字符,比特位的最高位为0;
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// 2.对于多字节字符,第一个字节的比特位中,最高位有n个1,剩下的n - 1个字节的比特位中,最高位都是10。
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// 好了,我知道你一定看不懂,那就先来看看下面例子后,再去看上面定义吧。
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// 比如一个字符(“A”),它在UTF8中的编码为(用二进制表示):01000001。由于比特位的最高位是0,表示它是单字节,它只需要1个字节就可以表示。
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// 再比如一个字符(“判”),它在UTF8中的编码为(用二进制表示):11100101 10001000 10100100。由于在第一个字节中,比特位最高位有3个1,说明这个字符总共需要3个字节来表示,且后3 - 1 = 2位字节中,比特位的最高位为10。
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if (bytes == null) return false;
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var length = bytes.LongLength;
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// 检查 BOM 头。
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if (ContainsBOM(bytes)) return true;
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var hasOffset = offset != null;
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var append = 0;
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if (hasOffset) offset.Value = 0;
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for (int i = 0; i < length; i++)
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{
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if (checkLength > 0 && i >= checkLength) break;
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var b = bytes[i];
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if (hasOffset) offset.Value = i;
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// 追加字节最高位为 0。
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if (append > 0)
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{
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if (b >> 6 != 2) return false;
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append -= 1;
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continue;
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}
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// ASCII 字符。
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if (b < 128) continue;
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// 2 字节 UTF-8。
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if (b >= 0xC0 && b <= 0xDF)
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{
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append = 1;
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continue;
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}
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// 3 字节 UTF-8 字符。
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if (b >= 0xE0 && b <= 0xEF)
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{
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append = 2;
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continue;
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}
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// 4 字节 UTF-8 字符。
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if (b >= 0xF0 && b <= 0xF7)
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{
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append = 3;
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continue;
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}
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// 5 字节 UTF-8 字符。
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if (b >= 0xF8 && b <= 0xFB)
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{
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append = 4;
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continue;
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}
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// 6 字节 UTF-8 字符。
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if (b >= 0xFC && b <= 0xFD)
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{
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append = 5;
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continue;
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}
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// 未知字节,非 UTF-8 定义。
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return false;
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}
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return true;
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}
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#endregion
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/// <summary>为字节数组增加字节。</summary>
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public static byte[] Append(byte[] head, params byte[] bytes)
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{
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var memory = new MemoryStream();
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if (head != null && head.Length > 0) Write(memory, head);
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if (bytes != null && bytes.Length > 0) Write(memory, bytes);
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var whole = memory.ToArray();
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return whole;
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}
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/// <summary>合并字节数组。</summary>
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public static byte[] Merge(params byte[][] array)
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{
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var memory = new MemoryStream();
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foreach (var bytes in array)
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{
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if (bytes == null || bytes.LongLength < 1L) continue;
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Write(memory, bytes);
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}
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var whole = memory.ToArray();
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return whole;
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}
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#region 压缩、解压。
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/// <summary>对数据进行 GZip 压缩。</summary>
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public static byte[] ToGzip(byte[] plain)
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{
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if (plain == null) return Constant.EmptyBytes;
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if (plain.Length == 0) return Constant.EmptyBytes;
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byte[] result;
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var output = new MemoryStream();
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var zip = new GZipStream(output, CompressionMode.Compress, true);
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zip.Write(plain, 0, plain.Length);
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zip.Close();
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zip.Dispose();
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result = output.ToArray();
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output.Close();
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output.Dispose();
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return result;
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}
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/// <summary>对数据进行 GZip 解压。</summary>
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public static byte[] FromGzip(byte[] gzip)
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{
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if (gzip == null) return Constant.EmptyBytes;
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if (gzip.Length == 0) return Constant.EmptyBytes;
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byte[] result;
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var input = new MemoryStream(gzip);
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var output = new MemoryStream();
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input.Position = 0;
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var zip = new GZipStream(input, CompressionMode.Decompress, true);
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Read(zip, output, 64, null);
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result = output.ToArray();
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zip.Close();
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zip.Dispose();
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input.Close();
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input.Dispose();
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output.Close();
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output.Dispose();
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return result;
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}
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/// <summary>压缩字典为 ZIP 文件。</summary>
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/// <param name="files">由文件名和文件内容组成的字典。</param>
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/// <param name="target">要输出的 ZIP 流。</param>
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public static Exception ToZip(Dictionary<string, byte[]> files, Stream target)
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{
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var zip = null as ZipOutputStream;
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try
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{
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if (files == null) return new ArgumentNullException();
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if (target == null) return new ArgumentNullException();
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if (!target.CanWrite) return new NotSupportedException();
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zip = new ZipOutputStream(target);
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zip.SetLevel(1);
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foreach (var file in files)
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{
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var crc = new Crc32();
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crc.Reset();
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crc.Update(file.Value);
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var zipentry = new ZipEntry(file.Key);
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zipentry.CompressionMethod = CompressionMethod.Deflated;
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//vzipentry.Size = vfile.Value.LongLength;
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zipentry.Crc = crc.Value;
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zipentry.IsUnicodeText = true;
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zip.PutNextEntry(zipentry);
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zip.Write(file.Value, 0, file.Value.Length);
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zip.CloseEntry();
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}
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zip.IsStreamOwner = false;
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zip.Finish();
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zip.Flush();
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zip.Close();
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return null;
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}
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catch (Exception ex)
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{
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KernelUtility.Dispose(zip);
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return ex;
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}
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}
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/// <summary>压缩到 ZIP 流。</summary>
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/// <param name="names">ZIP 内的文件名。</param>
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/// <param name="target">要输出的 ZIP 流。</param>
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/// <param name="modifildGetter">获取文件的修改时间。</param>
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/// <param name="disposeFiles">释放已写入 ZIP 的输入流。</param>
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public static Exception ToZip(IEnumerable<string> names, Stream target, Func<string, Stream> inputGetter, Func<string, DateTime> modifildGetter = null, bool disposeFiles = false)
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{
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var zip = null as ZipOutputStream;
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try
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{
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if (names == null) return new ArgumentNullException("names");
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if (target == null) return new ArgumentNullException("target");
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if (!target.CanWrite) return new ArgumentNullException("target");
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zip = new ZipOutputStream(target);
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zip.SetLevel(1);
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foreach (var name in names)
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{
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if (string.IsNullOrEmpty(name)) continue;
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// stream
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var capacity = 1024;
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var input = inputGetter == null ? null : inputGetter(name);
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if (input != null)
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{
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if (!input.CanSeek || !input.CanRead)
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{
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if (disposeFiles) KernelUtility.Dispose(input);
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return new NotSupportedException("获取到的输入流不支持 Seek 或 Read。");
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}
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}
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var crc = new Crc32();
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crc.Reset();
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if (input != null)
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{
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input.ResetPosition();
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while (true)
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{
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var count = 0;
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var buffer = new byte[capacity];
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count = input.Read(buffer, 0, buffer.Length);
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if (count == 0) break;
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crc.Update(buffer, 0, count);
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}
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}
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var entry = new ZipEntry(name);
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entry.CompressionMethod = CompressionMethod.Deflated;
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//vzipentry.Size = vfile.Value.LongLength;
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entry.Crc = crc.Value;
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entry.IsUnicodeText = true;
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if (modifildGetter != null) entry.DateTime = modifildGetter(name);
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zip.PutNextEntry(entry);
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if (input != null)
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{
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input.ResetPosition();
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while (true)
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{
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var count = 0;
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var buffer = new byte[capacity];
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count = input.Read(buffer, 0, buffer.Length);
|
|
if (count == 0) break;
|
|
zip.Write(buffer, 0, count);
|
|
}
|
|
}
|
|
zip.CloseEntry();
|
|
|
|
if (disposeFiles) KernelUtility.Dispose(input);
|
|
}
|
|
|
|
zip.IsStreamOwner = false;
|
|
zip.Finish();
|
|
zip.Flush();
|
|
zip.Close();
|
|
|
|
return null;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
KernelUtility.Dispose(zip);
|
|
return ex;
|
|
}
|
|
}
|
|
|
|
/// <summary>压缩字典为 ZIP 包。</summary>
|
|
/// <param name="files">由文件名和文件内容组成的字典。</param>
|
|
public static byte[] ToZip(Dictionary<string, byte[]> files)
|
|
{
|
|
if (files == null) return null;
|
|
|
|
var output = new MemoryStream();
|
|
|
|
var input = null as Stream;
|
|
var ex = ToZip(files.Keys, output, (name) =>
|
|
{
|
|
KernelUtility.Dispose(input);
|
|
if (name.IsEmpty()) return null;
|
|
|
|
var bytes = files[name];
|
|
if (bytes == null || bytes.LongLength < 1L) return null;
|
|
|
|
input = new MemoryStream();
|
|
Write(input, bytes);
|
|
return input;
|
|
}, null, true);
|
|
KernelUtility.Dispose(input);
|
|
|
|
var result = output.ToArray();
|
|
KernelUtility.Dispose(result);
|
|
return result;
|
|
}
|
|
|
|
/// <summary>解压 ZIP 文件。</summary>
|
|
public static Exception FromZip(Stream input, ZipOnFile onFile, ZipOnDirectory onDirectory = null, bool disposeOutput = false)
|
|
{
|
|
const int BufferCapacity = 1024;
|
|
|
|
var zip = null as ZipInputStream;
|
|
try
|
|
{
|
|
if (input == null) return new ArgumentNullException("input");
|
|
if (!input.CanRead) return new NotSupportedException();
|
|
if (onFile == null) return new ArgumentNullException("extraction");
|
|
|
|
zip = new ZipInputStream(input);
|
|
while (true)
|
|
{
|
|
var entry = zip.GetNextEntry();
|
|
if (entry == null) break;
|
|
|
|
var name = entry.Name;
|
|
var size = entry.Size;
|
|
var modified = entry.DateTime;
|
|
|
|
if (entry.IsFile)
|
|
{
|
|
var output = null as Stream;
|
|
try
|
|
{
|
|
output = onFile(name, size, modified);
|
|
if (output == null) continue;
|
|
if (!output.CanWrite)
|
|
{
|
|
KernelUtility.Dispose(output);
|
|
continue;
|
|
}
|
|
|
|
var writed = 0L;
|
|
while (true)
|
|
{
|
|
var buffer = new byte[BufferCapacity];
|
|
var count = zip.Read(buffer, 0, BufferCapacity);
|
|
writed += count;
|
|
if (count < 1) break;
|
|
output.Write(buffer, 0, count);
|
|
}
|
|
|
|
if (disposeOutput) KernelUtility.Dispose(output, true);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
if (disposeOutput) KernelUtility.Dispose(output, true);
|
|
KernelUtility.Dispose(zip);
|
|
return ex;
|
|
}
|
|
}
|
|
|
|
if (onDirectory != null && entry.IsDirectory)
|
|
{
|
|
try
|
|
{
|
|
onDirectory(name, modified);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
KernelUtility.Dispose(zip);
|
|
return ex;
|
|
}
|
|
}
|
|
}
|
|
zip.Dispose();
|
|
|
|
return null;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
KernelUtility.Dispose(zip);
|
|
return ex;
|
|
}
|
|
}
|
|
|
|
/// <summary>解压 .ZIP 文件为字典。</summary>
|
|
public static Dictionary<string, byte[]> FromZip(byte[] zip)
|
|
{
|
|
var result = new Dictionary<string, byte[]>();
|
|
if (zip == null) return result;
|
|
if (zip.LongLength < 1) return result;
|
|
|
|
var packagememory = new System.IO.MemoryStream(zip);
|
|
try
|
|
{
|
|
var zipstream = new ZipInputStream(packagememory);
|
|
while (true)
|
|
{
|
|
var entry = zipstream.GetNextEntry();
|
|
if (entry == null) break;
|
|
|
|
if (entry.IsFile)
|
|
{
|
|
var cellname = entry.Name;
|
|
var celldata = new byte[0];
|
|
{
|
|
var cellstream = new System.IO.MemoryStream();
|
|
while (true)
|
|
{
|
|
var blockdata = new byte[1024];
|
|
var blockread = zipstream.Read(blockdata, 0, 1024);
|
|
if (blockread < 1) break;
|
|
cellstream.Write(blockdata, 0, blockread);
|
|
}
|
|
celldata = cellstream.ToArray();
|
|
cellstream.Dispose();
|
|
}
|
|
if (result.ContainsKey(cellname)) result[cellname] = celldata;
|
|
else result.Add(cellname, celldata);
|
|
}
|
|
}
|
|
zipstream.Dispose();
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Debug.WriteLine(ex.ToString());
|
|
}
|
|
packagememory.Dispose();
|
|
return result;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Stream
|
|
|
|
/// <summary>关闭,并释放流。</summary>
|
|
public static void Dispose(Stream stream, bool flush = false, bool close = true)
|
|
{
|
|
if (stream != null)
|
|
{
|
|
try { if (flush) stream.Flush(); } catch { }
|
|
try { if (close) stream.Close(); } catch { }
|
|
try { stream.Dispose(); } catch { }
|
|
}
|
|
}
|
|
|
|
/// <summary>关闭,并释放流。</summary>
|
|
public static void Dispose(IEnumerable<Stream> streams, bool flush = false, bool close = true)
|
|
{
|
|
if (streams != null)
|
|
{
|
|
foreach (var stream in streams) Dispose(stream, flush, close);
|
|
}
|
|
}
|
|
|
|
/// <summary>重置流的位置到开始位置。</summary>
|
|
public static bool ResetPosition(Stream stream)
|
|
{
|
|
if (stream == null) return false;
|
|
try
|
|
{
|
|
stream.Position = 0;
|
|
if (stream.CanSeek) stream.Seek(0, SeekOrigin.Begin);
|
|
return true;
|
|
}
|
|
catch
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/// <summary></summary>
|
|
private static long Read(Stream source, Stream destination, int capacit, Action<Int64> progress)
|
|
{
|
|
if (source == null) return 0;
|
|
if (destination == null) return 0;
|
|
if (!source.CanRead) return 0;
|
|
if (!destination.CanWrite) return 0;
|
|
|
|
long result = 0;
|
|
var failed = false;
|
|
var callback = progress != null;
|
|
while (true)
|
|
{
|
|
var count = 0;
|
|
var buffer = new byte[capacit];
|
|
try { count = source.Read(buffer, 0, buffer.Length); } catch { failed = true; }
|
|
if (failed) break;
|
|
if (callback) progress(result);
|
|
if (count == 0) break;
|
|
try { destination.Write(buffer, 0, count); } catch { failed = true; }
|
|
if (failed) break;
|
|
result += count;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/// <summary>读取源流中的数据,并将数据写入目标流,获取写入的字节数。</summary>
|
|
/// <param name="source">源流。</param>
|
|
/// <param name="destination">目标流。</param>
|
|
/// <param name="progress">进度回调。</param>
|
|
public static long Read(Stream source, Stream destination, Action<Int64> progress = null)
|
|
{
|
|
return Read(source, destination, Constant.DefaultBufferCapacity, progress);
|
|
}
|
|
|
|
/// <summary>读取源流中的数据,并将数据写入目标流,获取写入的总字节数。</summary>
|
|
/// <param name="sources">源流。</param>
|
|
/// <param name="destination">目标流。</param>
|
|
public static long Read(IEnumerable<Stream> sources, Stream destination)
|
|
{
|
|
var count = 0L;
|
|
if (sources != null)
|
|
{
|
|
foreach (var source in sources)
|
|
{
|
|
count += Read(source, destination, Constant.DefaultBufferCapacity, null);
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/// <summary>读取源流中的数据。</summary>
|
|
/// <param name="source">源流。</param>
|
|
/// <param name="dispose">读取结束后释放源流。</param>
|
|
public static byte[] Read(Stream source, bool dispose = false)
|
|
{
|
|
var memory = new MemoryStream();
|
|
Read(source, memory, Constant.DefaultBufferCapacity, null);
|
|
var result = memory.ToArray();
|
|
Dispose(memory);
|
|
if (dispose) Dispose(source);
|
|
return result;
|
|
}
|
|
|
|
/// <summary>向目标流写入数据。</summary>
|
|
/// <param name="destination">目标流。</param>
|
|
/// <param name="bytes">要写入的数据。</param>
|
|
public static long Write(Stream destination, params byte[] bytes)
|
|
{
|
|
if (bytes == null) return 0L;
|
|
if (bytes.LongLength < 1L) return 0L;
|
|
if (destination == null) return 0L;
|
|
|
|
var count = 0L;
|
|
try
|
|
{
|
|
if (!destination.CanWrite) return 0L;
|
|
for (var i = 0L; i < bytes.LongLength; i++)
|
|
{
|
|
destination.WriteByte(bytes[i]);
|
|
count += 1L;
|
|
}
|
|
}
|
|
catch { }
|
|
|
|
return count;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region AES
|
|
|
|
private static RijndaelManaged Aes256Provider(byte[] argKey)
|
|
{
|
|
var key = argKey ?? Constant.EmptyBytes; // AesFill(argKey);
|
|
var p = new RijndaelManaged();
|
|
p.Key = key;
|
|
p.Mode = CipherMode.ECB;
|
|
p.Padding = PaddingMode.PKCS7;
|
|
return p;
|
|
}
|
|
|
|
/// <summary>对数据进行 AES 加密。</summary>
|
|
public static byte[] Aes256Encrypt(byte[] bytes, byte[] key = null)
|
|
{
|
|
if (bytes == null) return Constant.EmptyBytes;
|
|
if (bytes.Length == 0) return Constant.EmptyBytes;
|
|
var rm = Aes256Provider(key);
|
|
var result = new byte[0];
|
|
var ct = rm.CreateEncryptor();
|
|
try
|
|
{
|
|
result = ct.TransformFinalBlock(bytes, 0, bytes.Length);
|
|
}
|
|
catch { }
|
|
return result;
|
|
}
|
|
|
|
/// <summary>对数据进行 AES 解密。</summary>
|
|
public static byte[] Aes256Decrypt(byte[] cipher, byte[] key = null)
|
|
{
|
|
if (cipher == null) return Constant.EmptyBytes;
|
|
if (cipher.Length == 0) return Constant.EmptyBytes;
|
|
var rm = Aes256Provider(key);
|
|
var result = new byte[0];
|
|
var ct = rm.CreateDecryptor();
|
|
try
|
|
{
|
|
result = ct.TransformFinalBlock(cipher, 0, cipher.Length);
|
|
}
|
|
catch { }
|
|
ct.Dispose();
|
|
return result;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Hash
|
|
|
|
private static byte[] ComputeHash(HashAlgorithm csp, byte[] bytes)
|
|
{
|
|
if (bytes != null)
|
|
{
|
|
try
|
|
{
|
|
var result = csp.ComputeHash(bytes);
|
|
csp.Clear();
|
|
#if !NET20
|
|
csp.Dispose();
|
|
#endif
|
|
return result;
|
|
}
|
|
catch { }
|
|
}
|
|
return Constant.EmptyBytes;
|
|
}
|
|
|
|
private static byte[] ComputeHash(HashAlgorithm csp, Stream stream, bool dispose, Action<Int64> progress)
|
|
{
|
|
if (progress == null)
|
|
{
|
|
if (stream != null)
|
|
{
|
|
var result = Constant.EmptyBytes;
|
|
try
|
|
{
|
|
result = csp.ComputeHash(stream);
|
|
csp.Clear();
|
|
#if !NET20
|
|
csp.Dispose();
|
|
#endif
|
|
}
|
|
catch { }
|
|
if (dispose) stream.Dispose();
|
|
return result;
|
|
}
|
|
return Constant.EmptyBytes;
|
|
}
|
|
else
|
|
{
|
|
if (stream == null) return Constant.EmptyBytes;
|
|
|
|
// 初始化。
|
|
var validcallback = progress != null;
|
|
var capacity = Constant.DefaultBufferCapacity;
|
|
var buffer = new byte[capacity];
|
|
csp.Initialize();
|
|
|
|
// 读取。
|
|
var failed = false;
|
|
while (true)
|
|
{
|
|
var read = 0;
|
|
try { read = stream.Read(buffer, 0, capacity); }
|
|
catch { failed = true; }
|
|
|
|
if (read < capacity)
|
|
{
|
|
if (read < 1)
|
|
{
|
|
csp.TransformFinalBlock(new byte[0], 0, 0);
|
|
}
|
|
else
|
|
{
|
|
csp.TransformFinalBlock(buffer, 0, Convert.ToInt32(read));
|
|
}
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
csp.TransformBlock(buffer, 0, Convert.ToInt32(read), buffer, 0);
|
|
}
|
|
}
|
|
|
|
if (failed)
|
|
{
|
|
csp.Clear();
|
|
#if !NET20
|
|
csp.Dispose();
|
|
#endif
|
|
return Constant.EmptyBytes;
|
|
}
|
|
else
|
|
{
|
|
var result = csp.Hash;
|
|
csp.Clear();
|
|
#if !NET20
|
|
csp.Dispose();
|
|
#endif
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>获取 MD5 值。</summary>
|
|
public static byte[] MD5(params byte[] bytes)
|
|
{
|
|
return ComputeHash(new MD5CryptoServiceProvider(), bytes);
|
|
}
|
|
|
|
/// <summary>获取 MD5 值。</summary>
|
|
public static byte[] MD5(Stream stream, Action<Int64> progress = null)
|
|
{
|
|
return ComputeHash(new MD5CryptoServiceProvider(), stream, false, progress);
|
|
}
|
|
|
|
/// <summary>获取 SHA1 值。</summary>
|
|
public static byte[] SHA1(params byte[] bytes)
|
|
{
|
|
return ComputeHash(new SHA1CryptoServiceProvider(), bytes);
|
|
}
|
|
|
|
/// <summary>获取 SHA1 值。</summary>
|
|
public static byte[] SHA1(Stream stream, Action<Int64> progress = null)
|
|
{
|
|
return ComputeHash(new SHA1CryptoServiceProvider(), stream, false, progress);
|
|
}
|
|
|
|
#if !NET20
|
|
|
|
/// <summary>获取 SHA256 值。</summary>
|
|
public static byte[] SHA256(params byte[] bytes)
|
|
{
|
|
return ComputeHash(new SHA256CryptoServiceProvider(), bytes);
|
|
}
|
|
|
|
/// <summary>获取 SHA256 值。</summary>
|
|
public static byte[] SHA256(Stream stream, Action<Int64> progress = null)
|
|
{
|
|
return ComputeHash(new SHA256CryptoServiceProvider(), stream, false, progress);
|
|
}
|
|
|
|
#endif
|
|
|
|
#endregion
|
|
|
|
}
|
|
|
|
}
|
|
|