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using System;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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using System.Data;
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using System.Data.SqlClient;
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using System.Threading;
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using System.Runtime.InteropServices;
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namespace NetLibrary.Safety
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{
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/**//// <summary>
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/// 私钥加密(对称加密)
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/// </summary>
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public class CryptoPrivate
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{
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private SymmetricAlgorithm mobjCryptoService;
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private string Key;
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/**//// <summary>
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/// 对称加密类的构造函数
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/// 密钥可以通过当前公司进行编码，以其编码为Key。
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/// </summary>
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/// <param name="key">密钥</param>
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public CryptoPrivate(string key)
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{
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mobjCryptoService = new RijndaelManaged();
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//mobjCryptoService.
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Key=key;
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}
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/// <summary>
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/// 获得密钥
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/// </summary>
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/// <returns>密钥</returns>
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private byte[] GetLegalKey()
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{
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string sTemp = Key;
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mobjCryptoService.GenerateKey();
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//生成随机密钥
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byte[] bytTemp = mobjCryptoService.Key; //取得密钥
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int KeyLength = bytTemp.Length; //密钥长度
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if (sTemp.Length > KeyLength) //如果<<公司标志>>长度大于密钥长度，返回长度等于密钥长度一样的字符串
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sTemp = sTemp.Substring(0, KeyLength);
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else if (sTemp.Length < KeyLength) //如果<<公司标志>>长度小于密钥长度用空格填充到密钥所需长度
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sTemp = sTemp.PadRight(KeyLength, ' ');
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return ASCIIEncoding.ASCII.GetBytes(sTemp); //返回密钥数组
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}
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/**//// <summary>
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/// 获得初始向量IV
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/// </summary>
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/// <returns>初试向量IV</returns>
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private byte[] GetLegalIV()
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{
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string sTemp = "E3ghj*Ghg7!rNIfb&95GUY86GfghUb#er57HBh(u%g6HJ($jhWk7&!hg4ui%$hjk";
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mobjCryptoService.GenerateIV();
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byte[] bytTemp = mobjCryptoService.IV;
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int IVLength = bytTemp.Length;
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if (sTemp.Length > IVLength)
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sTemp = sTemp.Substring(0, IVLength);
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else if (sTemp.Length < IVLength)
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sTemp = sTemp.PadRight(IVLength, ' ');
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return ASCIIEncoding.ASCII.GetBytes(sTemp);
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}
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/// <summary>
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/// 加密方法
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/// </summary>
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/// <param name="Source">待加密的串</param>
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/// <returns>经过加密的串</returns>
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public string Encrypto(string Source)
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{
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byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
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MemoryStream ms = new MemoryStream();
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mobjCryptoService.Key = GetLegalKey();
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mobjCryptoService.IV = GetLegalIV();
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ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
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CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
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cs.Write(bytIn, 0, bytIn.Length);
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cs.FlushFinalBlock();
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ms.Close();
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byte[] bytOut = ms.ToArray();
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return Convert.ToBase64String(bytOut);
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}
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/// <summary>
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/// 解密方法
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/// </summary>
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/// <param name="Source">待解密的串</param>
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/// <returns>经过解密的串</returns>
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public string Decrypto(string Source)
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{
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StreamReader sr;
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byte[] bytIn = Convert.FromBase64String(Source);
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MemoryStream ms = new MemoryStream(bytIn, 0, bytIn.Length);
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mobjCryptoService.Key = GetLegalKey();
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mobjCryptoService.IV = GetLegalIV();
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ICryptoTransform encrypto = mobjCryptoService.CreateDecryptor();
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CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
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sr = new StreamReader(cs);
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return sr.ReadToEnd();
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}
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public static string Encryp(string Source)
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{
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CryptoPrivate cp = new CryptoPrivate("formmatwizard54073");
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return cp.Encrypto(Source);
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}
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public static string Decryp(string Source)
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{
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CryptoPrivate cp = new CryptoPrivate("formmatwizard54073");
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return cp.Decrypto(Source);
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}
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}
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/// <summary>
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/// 公钥加密(不对称加密)
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/// </summary>
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public class CryptoPublic
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{
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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/// <summary>
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/// 返回私钥
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/// </summary>
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public string GetPrikey()
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{
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string pubkey = rsa.ToXmlString(false); //公钥
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return rsa.ToXmlString(true); //返回私钥
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}
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/// <summary>
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/// 返回公钥
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/// </summary>
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public string GetPubkey()
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{
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string pubkey = rsa.ToXmlString(false); //公钥
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return rsa.ToXmlString(false); //返回公钥
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}
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/// <summary>
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/// 加密方法(要加密的字符串byte不能超过117个字节)
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/// </summary>
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/// <param name="Source">待加密的串</param>
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/// <param name="pubkey">公钥</param>
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public string Encrypto(string Source,string pubkey)
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{
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byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
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rsa.FromXmlString(pubkey);
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byte[] bytOut=rsa.Encrypt(bytIn,false); //加密数据
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return Convert.ToBase64String(bytOut);
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}
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/// <summary>
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/// 解密方法
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/// </summary>
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/// <param name="Source">待解密的串</param>
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/// <pubkey>私钥</pubkey>
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public string Decrypto(string Source,string prikey)
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{
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byte[] bytIn = Convert.FromBase64String(Source);
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rsa.FromXmlString(prikey);
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byte[] d=rsa.Decrypt(bytIn,false); //解密数据
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return UTF8Encoding.UTF8.GetString(d);
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}
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/// <summary>
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/// 数字签名
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/// </summary>
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/// <param name="Source">要签名的字符串</param>
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/// <param name="prikey">私钥</param>
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public string RsaCreateSignature(string Source,string prikey)
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{
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rsa.FromXmlString(prikey);
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RSAPKCS1SignatureFormatter f = new RSAPKCS1SignatureFormatter(rsa);
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f.SetHashAlgorithm("MD5");
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byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
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MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
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byte[] result = md5.ComputeHash(bytIn);
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byte[] b = f.CreateSignature(result); //针对希哈值进行签名
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return Convert.ToBase64String(b); //取得签名后希哈值
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}
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/// <summary>
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/// 验证签名
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/// </summary>
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/// <param name="Source">要验证的字符串</param>
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/// <param name="pubkey">公钥</param>
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/// <param name="Hash">签名后的字符串</param>
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public bool RsaVerifySignature(string Source,string Hash,string pubkey)
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{
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rsa.FromXmlString(pubkey);
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RSAPKCS1SignatureDeformatter f = new RSAPKCS1SignatureDeformatter(rsa);
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f.SetHashAlgorithm("MD5");
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byte[] key = Convert.FromBase64String(Hash);
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MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
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byte[] name = md5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(Source));
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if (f.VerifySignature(name,key)==true){return true;}
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return false;
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}
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public static string GetHashPassword(string password)
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{
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MD5 md5 = MD5.Create();
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byte[] hash = md5.ComputeHash(Encoding.UTF8.GetBytes(password));
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < hash.Length; i++)
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{
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sb.Append(hash[i].ToString("X2"));
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}
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return sb.ToString();
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}
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public static string GetHashPassword(string password,int StartIndex,int Length)
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{
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MD5 md5 = MD5.Create();
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byte[] hash = md5.ComputeHash(Encoding.UTF8.GetBytes(password));
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < hash.Length; i++)
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{
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sb.Append(hash[i].ToString("X2"));
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}
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return sb.ToString().Substring(StartIndex,Length);
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}
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/**//// <summary>
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/// MD5 32位加密
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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 Md5For32(string str)
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{
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string cl = str;
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string pwd = "";
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MD5 md5 = MD5.Create();//实例化一个md5对像
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// 加密后是一个字节类型的数组，这里要注意编码UTF8/Unicode等的选择
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byte[] s = md5.ComputeHash(Encoding.UTF8.GetBytes(cl));
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// 通过使用循环，将字节类型的数组转换为字符串，此字符串是常规字符格式化所得
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for (int i = 0; i < s.Length; i++)
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{
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// 将得到的字符串使用十六进制类型格式。格式后的字符是小写的字母，如果使用大写（X）则格式后的字符是大写字符
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pwd = pwd + s[i].ToString("x2");
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}
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return pwd;
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}
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}
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/// <summary>
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/// U盘加密
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/// </summary>
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public class UCryptoPublic
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{
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[DllImport("HD_Security.dll")]
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private static extern int HD_VerifyPassword(StringBuilder password, int passwordlen);
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[DllImport("HD_Security.dll")]
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private static extern int HD_Initialize(StringBuilder password, int passwordlen);
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[DllImport("HD_Security.dll")]
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public static extern int HD_GetDeviceSn(StringBuilder szSn, ref int nSnLen);
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/// <summary>
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/// 验证密码'成功(9000)打开设备失败(0)认证密码不正确(2)密码长度不正确(3)'
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/// </summary>
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/// <param name="password">密码</param>
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/// <param name="passwordlen">密码长度</param>
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public static int VerifyPassword(StringBuilder password, int passwordlen)
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{
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return HD_VerifyPassword(password, passwordlen);
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}
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/// <summary>
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/// 初始化密码'成功(9000)打开设备失败(0)初始化设备失败(1)密码长度不正确(3)'
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/// </summary>
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/// <param name="password">密码</param>
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/// <param name="passwordlen">密码长度</param>
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public static int Initialize(StringBuilder password, int passwordlen)
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{
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return HD_Initialize(password, passwordlen);
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}
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/// <summary>
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/// 返回U盘序列号'成功(9000)打开设备失败(0)获得序列号失败(4)'
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/// </summary>
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/// <param name="szSn">输出序列号</param>
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/// <param name="nSnlen">输出序列号长度</param>
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public static int GetDeviceSn(out string szSn, out int nSnLen)
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{
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StringBuilder sb = new StringBuilder(60);
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int snlen = 0;
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int a = HD_GetDeviceSn(sb, ref snlen);
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szSn = sb.ToString();
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nSnLen = snlen;
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return a;
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}
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}
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}
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