using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Win32; //对注册表操作
using System.Collections; //使用Arraylist
using System.Security.Cryptography;//加密解密
using System.IO; //文件操作
using System.Runtime.InteropServices;//调用DLL DllImport
using System.Management; //获取硬件信息
using System.Net; //获取IP地址是用到
using System.Drawing; //image
using System.Net.NetworkInformation; //ping 用到
using System.Text.RegularExpressions; //正则
using System.Data;
using System.Data.SqlClient;
using Microsoft.VisualBasic; //简体转繁体时用到
using System.Web; //html UrlEncode
//注册表操作
public class GF_RegReadWrite
{
/// <summary>
/// 读取路径为keypath，键名为keyname的注册表键值，缺省返回def
/// </summary>
/// <param name="rootkey"></param>
/// <param name="keypath">路径</param>
/// <param name="keyname">键名</param>
/// <param name="rtn">默认为null</param>
/// <returns></returns>
static public bool GetRegVal(RegistryKey rootkey, string keypath, string keyname, out string rtn)
{
rtn = "";
try
{
RegistryKey key = rootkey.OpenSubKey(keypath);
rtn = key.GetValue(keyname).ToString();
key.Close();
return true;
}
catch
{
return false;
}
}
/// <summary>
/// 设置路径为keypath，键名为keyname的注册表键值为keyval
/// </summary>
/// <param name="rootkey"></param>
/// <param name="keypath"></param>
/// <param name="keyname"></param>
/// <param name="keyval"></param>
/// <returns></returns>
static public bool SetRegVal(RegistryKey rootkey, string keypath, string keyname, string keyval)
{
try
{
RegistryKey key = rootkey.OpenSubKey(keypath, true);
if (key == null)
key = rootkey.CreateSubKey(keypath);
key.SetValue(keyname, (object)keyval);
key.Close();
return true;
}
catch
{
return false;
}
}
/// 创建路径为keypath的键
private RegistryKey CreateRegKey(RegistryKey rootkey, string keypath)
{
try
{
return rootkey.CreateSubKey(keypath);
}
catch
{
return null;
}
}
/// 删除路径为keypath的子项
private bool DelRegSubKey(RegistryKey rootkey, string keypath)
{
try
{
rootkey.DeleteSubKey(keypath);
return true;
}
catch
{
return false;
}
}
/// 删除路径为keypath的子项及其附属子项
private bool DelRegSubKeyTree(RegistryKey rootkey, string keypath)
{
try
{
rootkey.DeleteSubKeyTree(keypath);
return true;
}
catch
{
return false;
}
}
/// 删除路径为keypath下键名为keyname的键值
private bool DelRegKeyVal(RegistryKey rootkey, string keypath, string keyname)
{
try
{
RegistryKey key = rootkey.OpenSubKey(keypath, true);
key.DeleteValue(keyname);
return true;
}
catch
{
return false;
}
}
}
//类型转换
public class GF_Convert
{
/// <summary>
/// 字符串 转换 char数组
/// </summary>
/// <param name="in_str"></param>
/// <param name="in_len"></param>
/// <returns></returns>
public static char[] string2chararray(string in_str, int in_len)
{
char[] ch = new char[in_len];
in_str.ToCharArray().CopyTo(ch, 0);
return ch;
}
/// <summary>
/// char数组 转换 字符串
/// </summary>
/// <param name="in_str"></param>
/// <returns></returns>
public static string chararray2string(char[] in_str)
{
string out_str;
out_str = new string(in_str);
int i = out_str.IndexOf('\0', 0);
if (i == -1)
i = 16;
return out_str.Substring(0, i);
}
/// <summary>
/// byte数组 转换 字符串
/// </summary>
/// <param name="in_str"></param>
/// <returns></returns>
public static string bytearray2string(byte[] in_str)
{
string out_str;
out_str = System.Text.Encoding.Default.GetString(in_str);
return out_str.Substring(0, out_str.IndexOf('\0', 0));
}
/// <summary>
/// 字符串 转换 byte数组 注意转换出来会使原来的bytearray长度变短
/// </summary>
/// <param name="in_str"></param>
/// <returns></returns>
public static byte[] string2bytearray(string in_str)
{
return System.Text.Encoding.Default.GetBytes(in_str);
}
/// <summary>
/// 字符串 转换 byte数组 长度为传如的长度
/// </summary>
/// <param name="in_str">传入字符串</param>
/// <param name="iLen">目标字节数组长度</param>
/// <returns></returns>
public static byte[] string2bytearray(string in_str, int iLen)
{
byte[] bytes = new byte[iLen];
byte[] bsources=System.Text.Encoding.Default.GetBytes(in_str);
Array.Copy(bsources, bytes, bsources.Length);
return bytes;
}
/// <summary>
/// 将字符串编码为Base64字符串
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Base64Encode(string str)
{
byte[] barray;
barray = Encoding.Default.GetBytes(str);
return Convert.ToBase64String(barray);
}
/// <summary>
/// 将Base64字符串解码为普通字符串
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Base64Decode(string str)
{
byte[] barray;
try
{
barray = Convert.FromBase64String(str);
return Encoding.Default.GetString(barray);
}
catch
{
return str;
}
}
/// <summary>
/// 图片 转换 byte数组
/// </summary>
/// <param name="pic"></param>
/// <param name="fmt"></param>
/// <returns></returns>
public static byte[] image_Image2Byte(Image pic, System.Drawing.Imaging.ImageFormat fmt)
{
MemoryStream mem = new MemoryStream();
pic.Save(mem, fmt);
mem.Flush();
return mem.ToArray();
}
/// <summary>
/// byte数组 转换 图片
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
public static Image image_Byte2Image(byte[] bytes)
{
MemoryStream mem = new MemoryStream(bytes, true);
mem.Read(bytes, 0, bytes.Length);
mem.Flush();
Image aa = Image.FromStream(mem);
return aa;
}
/// <summary>
/// ip 转换 长整形
/// </summary>
/// <param name="strIP"></param>
/// <returns></returns>
public static long IP2Long(string strIP)
{
long[] ip = new long[4];
string[] s = strIP.Split('.');
ip[0] = long.Parse(s[0]);
ip[1] = long.Parse(s[1]);
ip[2] = long.Parse(s[2]);
ip[3] = long.Parse(s[3]);
return (ip[0] << 24) + (ip[1] << 16) + (ip[2] << 8) + ip[3];
}
/// <summary>
/// 长整形 转换 IP
/// </summary>
/// <param name="longIP"></param>
/// <returns></returns>
public static string Long2IP(long longIP)
{
StringBuilder sb = new StringBuilder("");
sb.Append(longIP >> 24);
sb.Append(".");
//将高8位置0，然后右移16为
sb.Append((longIP & 0x00FFFFFF) >> 16);
sb.Append(".");
sb.Append((longIP & 0x0000FFFF) >> 8);
sb.Append(".");
sb.Append((longIP & 0x000000FF));
return sb.ToString();
}
/// <summary>
/// 将8位日期型整型数据转换为日期字符串数据
/// </summary>
/// <param name="date">整型日期</param>
/// <param name="chnType">是否以中文年月日输出</param>
/// <returns></returns>
public static string FormatDate(int date, bool chnType)
{
string dateStr = date.ToString();
if (date <= 0 || dateStr.Length != 8)
return dateStr;
if (chnType)
return dateStr.Substring(0, 4) + "年" + dateStr.Substring(4, 2) + "月" + dateStr.Substring(6) + "日";
return dateStr.Substring(0, 4) + "-" + dateStr.Substring(4, 2) + "-" + dateStr.Substring(6);
}
/// <summary>
/// string型转换为bool型
/// </summary>
/// <param name="strValue">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的bool类型结果</returns>
public static bool StrToBool(object expression, bool defValue)
{
if (expression != null)
return StrToBool(expression, defValue);
return defValue;
}
/// <summary>
/// string型转换为bool型
/// </summary>
/// <param name="strValue">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的bool类型结果</returns>
public static bool StrToBool(string expression, bool defValue)
{
if (expression != null)
{
if (string.Compare(expression, "true", true) == 0)
return true;
else if (string.Compare(expression, "false", true) == 0)
return false;
}
return defValue;
}
/// <summary>
/// 将对象转换为Int32类型
/// </summary>
/// <param name="strValue">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的int类型结果</returns>
public static int ObjectToInt(object expression)
{
return ObjectToInt(expression, 0);
}
/// <summary>
/// 将对象转换为Int32类型
/// </summary>
/// <param name="strValue">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的int类型结果</returns>
public static int ObjectToInt(object expression, int defValue)
{
if (expression != null)
return StrToInt(expression.ToString(), defValue);
return defValue;
}
/// <summary>
/// 将对象转换为Int32类型,转换失败返回0
/// </summary>
/// <param name="str">要转换的字符串</param>
/// <returns>转换后的int类型结果</returns>
public static int StrToInt(string str)
{
return StrToInt(str, 0);
}
/// <summary>
/// 将对象转换为Int32类型
/// </summary>
/// <param name="str">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的int类型结果</returns>
public static int StrToInt(string str, int defValue)
{
if (string.IsNullOrEmpty(str) || str.Trim().Length >= 11 || !Regex.IsMatch(str.Trim(), @"^([-]|[0-9])[0-9]*(\.\w*)?$"))
return defValue;
int rv;
if (Int32.TryParse(str, out rv))
return rv;
return Convert.ToInt32(StrToFloat(str, defValue));
}
/// <summary>
/// string型转换为float型
/// </summary>
/// <param name="strValue">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的int类型结果</returns>
public static float StrToFloat(object strValue, float defValue)
{
if ((strValue == null))
return defValue;
return StrToFloat(strValue.ToString(), defValue);
}
/// <summary>
/// string型转换为float型
/// </summary>
/// <param name="strValue">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的int类型结果</returns>
public static float ObjectToFloat(object strValue, float defValue)
{
if ((strValue == null))
return defValue;
return StrToFloat(strValue.ToString(), defValue);
}
/// <summary>
/// string型转换为float型
/// </summary>
/// <param name="strValue">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的int类型结果</returns>
public static float ObjectToFloat(object strValue)
{
return ObjectToFloat(strValue.ToString(), 0);
}
/// <summary>
/// string型转换为float型
/// </summary>
/// <param name="strValue">要转换的字符串</param>
/// <returns>转换后的int类型结果</returns>
public static float StrToFloat(string strValue)
{
if ((strValue == null))
return 0;
return StrToFloat(strValue.ToString(), 0);
}
/// <summary>
/// string型转换为float型
/// </summary>
/// <param name="strValue">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的int类型结果</returns>
public static float StrToFloat(string strValue, float defValue)
{
if ((strValue == null) || (strValue.Length > 10))
return defValue;
float intValue = defValue;
if (strValue != null)
{
bool IsFloat = Regex.IsMatch(strValue, @"^([-]|[0-9])[0-9]*(\.\w*)?$");
if (IsFloat)
float.TryParse(strValue, out intValue);
}
return intValue;
}
/// <summary>
/// 将对象转换为日期时间类型
/// </summary>
/// <param name="str">要转换的字符串</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的int类型结果</returns>
public static DateTime StrToDateTime(string str, DateTime defValue)
{
if (!string.IsNullOrEmpty(str))
{
DateTime dateTime;
if (DateTime.TryParse(str, out dateTime))
return dateTime;
}
return defValue;
}
/// <summary>
/// 将对象转换为日期时间类型
/// </summary>
/// <param name="str">要转换的字符串</param>
/// <returns>转换后的int类型结果</returns>
public static DateTime StrToDateTime(string str)
{
return StrToDateTime(str, DateTime.Now);
}
/// <summary>
/// 将对象转换为日期时间类型
/// </summary>
/// <param name="obj">要转换的对象</param>
/// <returns>转换后的int类型结果</returns>
public static DateTime ObjectToDateTime(object obj)
{
return StrToDateTime(obj.ToString());
}
/// <summary>
/// 将对象转换为日期时间类型
/// </summary>
/// <param name="obj">要转换的对象</param>
/// <param name="defValue">缺省值</param>
/// <returns>转换后的int类型结果</returns>
public static DateTime ObjectToDateTime(object obj, DateTime defValue)
{
return StrToDateTime(obj.ToString(), defValue);
}
/// <summary>
/// 替换回车换行符为html换行符
/// </summary>
public static string StrFormat(string str)
{
string str2;
if (str == null)
{
str2 = "";
}
else
{
str = str.Replace("\r\n", "<br />");
str = str.Replace("\n", "<br />");
str2 = str;
}
return str2;
}
/// <summary>
/// 转换为简体中文
/// </summary>
public static string ToSChinese(string str)
{
return Strings.StrConv(str, VbStrConv.SimplifiedChinese, 0);
}
/// <summary>
/// 转换为繁体中文
/// </summary>
public static string ToTChinese(string str)
{
return Strings.StrConv(str, VbStrConv.TraditionalChinese, 0);
}
/// <summary>
/// 清除字符串数组中的重复项
/// </summary>
/// <param name="strArray">字符串数组</param>
/// <param name="maxElementLength">字符串数组中单个元素的最大长度</param>
/// <returns></returns>
public static string[] DistinctStringArray(string[] strArray, int maxElementLength)
{
Hashtable h = new Hashtable();
foreach (string s in strArray)
{
string k = s;
if (maxElementLength > 0 && k.Length > maxElementLength)
{
k = k.Substring(0, maxElementLength);
}
h[k.Trim()] = s;
}
string[] result = new string[h.Count];
h.Keys.CopyTo(result, 0);
return result;
}
/// <summary>
/// 清除字符串数组中的重复项
/// </summary>
/// <param name="strArray">字符串数组</param>
/// <returns></returns>
public static string[] DistinctStringArray(string[] strArray)
{
return DistinctStringArray(strArray, 0);
}
//读写INI
public class GF_INI
{
[DllImport("kernel32")]
private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);
[DllImport("kernel32")]
private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);
[DllImport("kernel32.dll")]
public static extern int Beep(int dwFreq, int dwDuration);
//读ini
public static void iniFile_SetVal(string in_filename, string Section, string Key, string Value)
{
WritePrivateProfileString(Section, Key, Value, in_filename);
}
//写INI
public static string iniFile_GetVal(string in_filename, string Section, string Key)
{
StringBuilder temp = new StringBuilder(255);
int i = GetPrivateProfileString(Section, Key, "", temp, 255, in_filename);
if (i == 0)
return "";
else
return temp.ToString();
}
}
//硬件信息
public class GF_Hardware
{
/// <summary>
/// cpu序列号
/// </summary>
/// <returns></returns>
public static string getID_CpuId()
{
string cpuInfo = "";//cpu序列号
ManagementClass cimobject = new ManagementClass("Win32_Processor");
ManagementObjectCollection moc = cimobject.GetInstances();
foreach (ManagementObject mo in moc)
{
cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
}
return cpuInfo;
}
/// <summary>
/// 硬盘ID号
/// </summary>
/// <returns></returns>
public static string getID_HardDiskId()
{
string HDid = "";
ManagementClass cimobject = new ManagementClass("Win32_DiskDrive");
ManagementObjectCollection moc = cimobject.GetInstances();
foreach (ManagementObject mo in moc)
{
HDid = (string)mo.Properties["Model"].Value;
}
return HDid;
}
/// <summary>
/// 获取网卡MacAddress
/// </summary>
/// <returns></returns>
public static string getID_NetCardId()
{
string NCid = "";
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
if ((bool)mo["IPEnabled"] == true)
NCid = mo["MacAddress"].ToString();
mo.Dispose();
}
return NCid;
}
}
//加密解密
public class GF_Encrypt
{
/// <summary>
/// DES加密
/// </summary>
/// <param name="pToEncrypt">加密字符串</param>
/// <param name="sKey">密钥</param>
/// <returns></returns>
public static string string_Encrypt(string pToEncrypt, string sKey)
{
if (pToEncrypt == "") return "";
if (sKey.Length < 8) sKey = sKey + "xuE29xWp";
if (sKey.Length > 8) sKey = sKey.Substring(0, 8);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
//把字符串放到byte数组中
//原来使用的UTF8编码，我改成Unicode编码了，不行
byte[] inputByteArray = Encoding.Default.GetBytes(pToEncrypt);
//建立加密对象的密钥和偏移量
//原文使用ASCIIEncoding.ASCII方法的GetBytes方法
//使得输入密码必须输入英文文本
des.Key = ASCIIEncoding.Default.GetBytes(sKey);
des.IV = ASCIIEncoding.Default.GetBytes(sKey);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
//Write the byte array into the crypto stream
//(It will end up in the memory stream)
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
//Get the data back from the memory stream, and into a string
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
//Format as hex
ret.AppendFormat("{0:X2}", b);
}
ret.ToString();
return ret.ToString();
}
/// <summary>
/// DES解密
/// </summary>
/// <param name="pToDecrypt">解密字符串</param>
/// <param name="sKey">解密密钥</param>
/// <param name="outstr">返回值</param>
/// <returns></returns>
public static bool string_Decrypt(string pToDecrypt, string sKey, out string outstr)
{
if (pToDecrypt == "")
{
outstr = "";
return true;
};
if (sKey.Length < 8) sKey = sKey + "xuE29xWp";
if (sKey.Length > 8) sKey = sKey.Substring(0, 8);
try
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
//Put the input string into the byte array
byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
for (int x = 0; x < pToDecrypt.Length / 2; x++)
{
int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
inputByteArray[x] = (byte)i;
}
//建立加密对象的密钥和偏移量，此值重要，不能修改
des.Key = ASCIIEncoding.Default.GetBytes(sKey);
des.IV = ASCIIEncoding.Default.GetBytes(sKey);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
//Flush the data through the crypto stream into the memory stream
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
//Get the decrypted data back from the memory stream
//建立StringBuild对象，CreateDecrypt使用的是流对象，必须把解密后的文本变成流对象
StringBuilder ret = new StringBuilder();
outstr = System.Text.Encoding.Default.GetString(ms.ToArray());
return true;
}
catch
{
outstr = "";
return false;
}
}
/// <summary>
/// 加密
/// </summary>
public class AES
{
//默认密钥向量
private static byte[] Keys = { 0x41, 0x72, 0x65, 0x79, 0x6F, 0x75, 0x6D, 0x79, 0x53, 0x6E, 0x6F, 0x77, 0x6D, 0x61, 0x6E, 0x3F };
public static string Encode(string encryptString, string encryptKey)
{
encryptKey = GF_GET.GetSubString(encryptKey, 32, "");
encryptKey = encryptKey.PadRight(32, ' ');
RijndaelManaged rijndaelProvider = new RijndaelManaged();
rijndaelProvider.Key = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 32));
rijndaelProvider.IV = Keys;
ICryptoTransform rijndaelEncrypt = rijndaelProvider.CreateEncryptor();
byte[] inputData = Encoding.UTF8.GetBytes(encryptString);
byte[] encryptedData = rijndaelEncrypt.TransformFinalBlock(inputData, 0, inputData.Length);
return Convert.ToBase64String(encryptedData);
}
public static string Decode(string decryptString, string decryptKey)
{
try
{
decryptKey = GF_GET.GetSubString(decryptKey, 32, "");
decryptKey = decryptKey.PadRight(32, ' ');
RijndaelManaged rijndaelProvider = new RijndaelManaged();
rijndaelProvider.Key = Encoding.UTF8.GetBytes(decryptKey);
rijndaelProvider.IV = Keys;
ICryptoTransform rijndaelDecrypt = rijndaelProvider.CreateDecryptor();
byte[] inputData = Convert.FromBase64String(decryptString);
byte[] decryptedData = rijndaelDecrypt.TransformFinalBlock(inputData, 0, inputData.Length);
return Encoding.UTF8.GetString(decryptedData);
}
catch
{
return "";
}
}
}
/// <summary>
/// 加密
/// </summary>
public class DES
{
//默认密钥向量
private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
/// <summary>
/// DES加密字符串
/// </summary>
/// <param name="encryptString">待加密的字符串</param>
/// <param name="encryptKey">加密密钥,要求为8位</param>
/// <returns>加密成功返回加密后的字符串,失败返回源串</returns>
public static string Encode(string encryptString, string encryptKey)
{
encryptKey = GF_GET.GetSubString(encryptKey, 8, "");
encryptKey = encryptKey.PadRight(8, ' ');
byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
byte[] rgbIV = Keys;
byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
}
/// <summary>
/// DES解密字符串
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
/// <returns>解密成功返回解密后的字符串,失败返源串</returns>
public static string Decode(string decryptString, string decryptKey)
{
try
{
decryptKey = GF_GET.GetSubString(decryptKey, 8, "");
decryptKey = decryptKey.PadRight(8, ' ');
byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
byte[] rgbIV = Keys;
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Encoding.UTF8.GetString(mStream.ToArray());
}
catch
{
return "";
}
}
}
/// <summary>
/// MD5函数
/// </summary>
/// <param name="str">原始字符串</param>
/// <returns>MD5结果</returns>
public static string MD5(string str)
{
byte[] b = Encoding.UTF8.GetBytes(str);
b = new MD5CryptoServiceProvider().ComputeHash(b);
string ret = "";
for (int i = 0; i < b.Length; i++)
ret += b[i].ToString("x").PadLeft(2, '0');
return ret;
}
/// <summary>
/// SHA256函数
/// </summary>
/// /// <param name="str">原始字符串</param>
/// <returns>SHA256结果</returns>
public static string SHA256(string str)
{
byte[] SHA256Data = Encoding.UTF8.GetBytes(str);
SHA256Managed Sha256 = new SHA256Managed();
byte[] Result = Sha256.ComputeHash(SHA256Data);
return Convert.ToBase64String(Result); //返回长度为44字节的字符串
}
}