C# 加密解密
using System; using System.Security.Cryptography; using System.Text; namespace DotNet.Utilities { /// <summary> /// Encrypt 的摘要说明。 /// </summary> public class DEncrypt { /// <summary> /// 构造方法 /// </summary> public DEncrypt() { } #region 使用 缺省密钥字符串 加密/解密string /// <summary> /// 使用缺省密钥字符串加密string /// </summary> /// <param name="original">明文</param> /// <returns>密文</returns> public static string Encrypt(string original) { return Encrypt(original,"MATICSOFT"); } /// <summary> /// 使用缺省密钥字符串解密string /// </summary> /// <param name="original">密文</param> /// <returns>明文</returns> public static string Decrypt(string original) { return Decrypt(original,"MATICSOFT",System.Text.Encoding.Default); } #endregion #region 使用 给定密钥字符串 加密/解密string /// <summary> /// 使用给定密钥字符串加密string /// </summary> /// <param name="original">原始文字</param> /// <param name="key">密钥</param> /// <param name="encoding">字符编码方案</param> /// <returns>密文</returns> public static string Encrypt(string original, string key) { byte[] buff = System.Text.Encoding.Default.GetBytes(original); byte[] kb = System.Text.Encoding.Default.GetBytes(key); return Convert.ToBase64String(Encrypt(buff,kb)); } /// <summary> /// 使用给定密钥字符串解密string /// </summary> /// <param name="original">密文</param> /// <param name="key">密钥</param> /// <returns>明文</returns> public static string Decrypt(string original, string key) { return Decrypt(original,key,System.Text.Encoding.Default); } /// <summary> /// 使用给定密钥字符串解密string,返回指定编码方式明文 /// </summary> /// <param name="encrypted">密文</param> /// <param name="key">密钥</param> /// <param name="encoding">字符编码方案</param> /// <returns>明文</returns> public static string Decrypt(string encrypted, string key,Encoding encoding) { byte[] buff = Convert.FromBase64String(encrypted); byte[] kb = System.Text.Encoding.Default.GetBytes(key); return encoding.GetString(Decrypt(buff,kb)); } #endregion #region 使用 缺省密钥字符串 加密/解密/byte[] /// <summary> /// 使用缺省密钥字符串解密byte[] /// </summary> /// <param name="encrypted">密文</param> /// <param name="key">密钥</param> /// <returns>明文</returns> public static byte[] Decrypt(byte[] encrypted) { byte[] key = System.Text.Encoding.Default.GetBytes("MATICSOFT"); return Decrypt(encrypted,key); } /// <summary> /// 使用缺省密钥字符串加密 /// </summary> /// <param name="original">原始数据</param> /// <param name="key">密钥</param> /// <returns>密文</returns> public static byte[] Encrypt(byte[] original) { byte[] key = System.Text.Encoding.Default.GetBytes("MATICSOFT"); return Encrypt(original,key); } #endregion #region 使用 给定密钥 加密/解密/byte[] /// <summary> /// 生成MD5摘要 /// </summary> /// <param name="original">数据源</param> /// <returns>摘要</returns> public static byte[] MakeMD5(byte[] original) { MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider(); byte[] keyhash = hashmd5.ComputeHash(original); hashmd5 = null; return keyhash; } /// <summary> /// 使用给定密钥加密 /// </summary> /// <param name="original">明文</param> /// <param name="key">密钥</param> /// <returns>密文</returns> public static byte[] Encrypt(byte[] original, byte[] key) { TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider(); des.Key = MakeMD5(key); des.Mode = CipherMode.ECB; return des.CreateEncryptor().TransformFinalBlock(original, 0, original.Length); } /// <summary> /// 使用给定密钥解密数据 /// </summary> /// <param name="encrypted">密文</param> /// <param name="key">密钥</param> /// <returns>明文</returns> public static byte[] Decrypt(byte[] encrypted, byte[] key) { TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider(); des.Key = MakeMD5(key); des.Mode = CipherMode.ECB; return des.CreateDecryptor().TransformFinalBlock(encrypted, 0, encrypted.Length); } #endregion } }
using System; using System.Security.Cryptography; using System.Text; namespace DotNet.Utilities { /// <summary> /// DES加密/解密类。 /// </summary> public class DESEncrypt { public DESEncrypt() { } #region ========加密======== /// <summary> /// 加密 /// </summary> /// <param name="Text"></param> /// <returns></returns> public static string Encrypt(string Text) { return Encrypt(Text,"MATICSOFT"); } /// <summary> /// 加密数据 /// </summary> /// <param name="Text"></param> /// <param name="sKey"></param> /// <returns></returns> public static string Encrypt(string Text,string sKey) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); byte[] inputByteArray; inputByteArray=Encoding.Default.GetBytes(Text); des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); System.IO.MemoryStream ms=new System.IO.MemoryStream(); CryptoStream cs=new CryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write); cs.Write(inputByteArray,0,inputByteArray.Length); cs.FlushFinalBlock(); StringBuilder ret=new StringBuilder(); foreach( byte b in ms.ToArray()) { ret.AppendFormat("{0:X2}",b); } return ret.ToString(); } #endregion #region ========解密======== /// <summary> /// 解密 /// </summary> /// <param name="Text"></param> /// <returns></returns> public static string Decrypt(string Text) { return Decrypt(Text,"MATICSOFT"); } /// <summary> /// 解密数据 /// </summary> /// <param name="Text"></param> /// <param name="sKey"></param> /// <returns></returns> public static string Decrypt(string Text,string sKey) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); int len; len=Text.Length/2; byte[] inputByteArray = new byte[len]; int x,i; for(x=0;x<len;x++) { i = Convert.ToInt32(Text.Substring(x * 2, 2), 16); inputByteArray[x]=(byte)i; } des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); System.IO.MemoryStream ms=new System.IO.MemoryStream(); CryptoStream cs=new CryptoStream(ms,des.CreateDecryptor(),CryptoStreamMode.Write); cs.Write(inputByteArray,0,inputByteArray.Length); cs.FlushFinalBlock(); return Encoding.Default.GetString(ms.ToArray()); } #endregion } }
using System; using System.Security.Cryptography; using System.IO; namespace DotNet.Utilities { /// <summary> /// 加密解密实用类。 /// </summary> public class Encrypt { //密钥 private static byte[] arrDESKey = new byte[] {42, 16, 93, 156, 78, 4, 218, 32}; private static byte[] arrDESIV = new byte[] {55, 103, 246, 79, 36, 99, 167, 3}; /// <summary> /// 加密。 /// </summary> /// <param name="m_Need_Encode_String"></param> /// <returns></returns> public static string Encode(string m_Need_Encode_String) { if (m_Need_Encode_String == null) { throw new Exception("Error: \n源字符串为空！！"); } DESCryptoServiceProvider objDES = new DESCryptoServiceProvider(); MemoryStream objMemoryStream = new MemoryStream(); CryptoStream objCryptoStream = new CryptoStream(objMemoryStream,objDES.CreateEncryptor(arrDESKey,arrDESIV),CryptoStreamMode.Write); StreamWriter objStreamWriter = new StreamWriter(objCryptoStream); objStreamWriter.Write(m_Need_Encode_String); objStreamWriter.Flush(); objCryptoStream.FlushFinalBlock(); objMemoryStream.Flush(); return Convert.ToBase64String(objMemoryStream.GetBuffer(), 0, (int)objMemoryStream.Length); } /// <summary> /// 解密。 /// </summary> /// <param name="m_Need_Encode_String"></param> /// <returns></returns> public static string Decode(string m_Need_Encode_String) { if (m_Need_Encode_String == null) { throw new Exception("Error: \n源字符串为空！！"); } DESCryptoServiceProvider objDES = new DESCryptoServiceProvider(); byte[] arrInput = Convert.FromBase64String(m_Need_Encode_String); MemoryStream objMemoryStream = new MemoryStream(arrInput); CryptoStream objCryptoStream = new CryptoStream(objMemoryStream,objDES.CreateDecryptor(arrDESKey,arrDESIV),CryptoStreamMode.Read); StreamReader objStreamReader = new StreamReader(objCryptoStream); return objStreamReader.ReadToEnd(); } /// <summary> /// md5 /// </summary> /// <param name="encypStr"></param> /// <returns></returns> public static string Md5(string encypStr) { string retStr; MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider(); byte[] inputBye; byte[] outputBye; inputBye = System.Text.Encoding.ASCII.GetBytes(encypStr); outputBye = m5.ComputeHash(inputBye); retStr = Convert.ToBase64String(outputBye); return (retStr); } } }
using System; using System.Text; using System.Security.Cryptography; namespace DotNet.Utilities { /// <summary> /// 得到随机安全码（哈希加密）。 /// </summary> public class HashEncode { public HashEncode() { // // TODO: 在此处添加构造函数逻辑 // } /// <summary> /// 得到随机哈希加密字符串 /// </summary> /// <returns></returns> public static string GetSecurity() { string Security = HashEncoding(GetRandomValue()); return Security; } /// <summary> /// 得到一个随机数值 /// </summary> /// <returns></returns> public static string GetRandomValue() { Random Seed = new Random(); string RandomVaule = Seed.Next(1, int.MaxValue).ToString(); return RandomVaule; } /// <summary> /// 哈希加密一个字符串 /// </summary> /// <param name="Security"></param> /// <returns></returns> public static string HashEncoding(string Security) { byte[] Value; UnicodeEncoding Code = new UnicodeEncoding(); byte[] Message = Code.GetBytes(Security); SHA512Managed Arithmetic = new SHA512Managed(); Value = Arithmetic.ComputeHash(Message); Security = ""; foreach(byte o in Value) { Security += (int) o + "O"; } return Security; } } }
using System; using System.Text; using System.Security.Cryptography; using System.IO; using System.Text.RegularExpressions; using System.Collections; namespace DotNet.Utilities { /// <summary> /// MySecurity(安全类) 的摘要说明。 /// </summary> public class MySecurity { /// <summary> /// 初始化安全类 /// </summary> public MySecurity() { ///默认密码 key = "0123456789"; } private string key; //默认密钥 private byte[] sKey; private byte[] sIV; #region 加密字符串 /// <summary> /// 加密字符串 /// </summary> /// <param name="inputStr">输入字符串</param> /// <param name="keyStr">密码，可以为“”</param> /// <returns>输出加密后字符串</returns> static public string SEncryptString(string inputStr, string keyStr) { MySecurity ws = new MySecurity(); return ws.EncryptString(inputStr, keyStr); } /// <summary> /// 加密字符串 /// </summary> /// <param name="inputStr">输入字符串</param> /// <param name="keyStr">密码，可以为“”</param> /// <returns>输出加密后字符串</returns> public string EncryptString(string inputStr, string keyStr) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); if (keyStr == "") keyStr = key; byte[] inputByteArray = Encoding.Default.GetBytes(inputStr); byte[] keyByteArray = Encoding.Default.GetBytes(keyStr); SHA1 ha = new SHA1Managed(); byte[] hb = ha.ComputeHash(keyByteArray); sKey = new byte[8]; sIV = new byte[8]; for (int i = 0; i < 8; i++) sKey[i] = hb[i]; for (int i = 8; i < 16; i++) sIV[i - 8] = hb[i]; des.Key = sKey; des.IV = sIV; MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); StringBuilder ret = new StringBuilder(); foreach (byte b in ms.ToArray()) { ret.AppendFormat("{0:X2}", b); } cs.Close(); ms.Close(); return ret.ToString(); } #endregion #region 加密字符串 密钥为系统默认 0123456789 /// <summary> /// 加密字符串 密钥为系统默认 /// </summary> /// <param name="inputStr">输入字符串</param> /// <returns>输出加密后字符串</returns> static public string SEncryptString(string inputStr) { MySecurity ws = new MySecurity(); return ws.EncryptString(inputStr, ""); } #endregion #region 加密文件 /// <summary> /// 加密文件 /// </summary> /// <param name="filePath">输入文件路径</param> /// <param name="savePath">加密后输出文件路径</param> /// <param name="keyStr">密码，可以为“”</param> /// <returns></returns> public bool EncryptFile(string filePath, string savePath, string keyStr) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); if (keyStr == "") keyStr = key; FileStream fs = File.OpenRead(filePath); byte[] inputByteArray = new byte[fs.Length]; fs.Read(inputByteArray, 0, (int)fs.Length); fs.Close(); byte[] keyByteArray = Encoding.Default.GetBytes(keyStr); SHA1 ha = new SHA1Managed(); byte[] hb = ha.ComputeHash(keyByteArray); sKey = new byte[8]; sIV = new byte[8]; for (int i = 0; i < 8; i++) sKey[i] = hb[i]; for (int i = 8; i < 16; i++) sIV[i - 8] = hb[i]; des.Key = sKey; des.IV = sIV; MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); fs = File.OpenWrite(savePath); foreach (byte b in ms.ToArray()) { fs.WriteByte(b); } fs.Close(); cs.Close(); ms.Close(); return true; } #endregion #region 解密字符串 /// <summary> /// 解密字符串 /// </summary> /// <param name="inputStr">要解密的字符串</param> /// <param name="keyStr">密钥</param> /// <returns>解密后的结果</returns> static public string SDecryptString(string inputStr, string keyStr) { MySecurity ws = new MySecurity(); return ws.DecryptString(inputStr, keyStr); } /// <summary> /// 解密字符串 密钥为系统默认 /// </summary> /// <param name="inputStr">要解密的字符串</param> /// <returns>解密后的结果</returns> static public string SDecryptString(string inputStr) { MySecurity ws = new MySecurity(); return ws.DecryptString(inputStr, ""); } /// <summary> /// 解密字符串 /// </summary> /// <param name="inputStr">要解密的字符串</param> /// <param name="keyStr">密钥</param> /// <returns>解密后的结果</returns> public string DecryptString(string inputStr, string keyStr) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); if (keyStr == "") keyStr = key; byte[] inputByteArray = new byte[inputStr.Length / 2]; for (int x = 0; x < inputStr.Length / 2; x++) { int i = (Convert.ToInt32(inputStr.Substring(x * 2, 2), 16)); inputByteArray[x] = (byte)i; } byte[] keyByteArray = Encoding.Default.GetBytes(keyStr); SHA1 ha = new SHA1Managed(); byte[] hb = ha.ComputeHash(keyByteArray); sKey = new byte[8]; sIV = new byte[8]; for (int i = 0; i < 8; i++) sKey[i] = hb[i]; for (int i = 8; i < 16; i++) sIV[i - 8] = hb[i]; des.Key = sKey; des.IV = sIV; MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); StringBuilder ret = new StringBuilder(); return System.Text.Encoding.Default.GetString(ms.ToArray()); } #endregion #region 解密文件 /// <summary> /// 解密文件 /// </summary> /// <param name="filePath">输入文件路径</param> /// <param name="savePath">解密后输出文件路径</param> /// <param name="keyStr">密码，可以为“”</param> /// <returns></returns> public bool DecryptFile(string filePath, string savePath, string keyStr) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); if (keyStr == "") keyStr = key; FileStream fs = File.OpenRead(filePath); byte[] inputByteArray = new byte[fs.Length]; fs.Read(inputByteArray, 0, (int)fs.Length); fs.Close(); byte[] keyByteArray = Encoding.Default.GetBytes(keyStr); SHA1 ha = new SHA1Managed(); byte[] hb = ha.ComputeHash(keyByteArray); sKey = new byte[8]; sIV = new byte[8]; for (int i = 0; i < 8; i++) sKey[i] = hb[i]; for (int i = 8; i < 16; i++) sIV[i - 8] = hb[i]; des.Key = sKey; des.IV = sIV; MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); fs = File.OpenWrite(savePath); foreach (byte b in ms.ToArray()) { fs.WriteByte(b); } fs.Close(); cs.Close(); ms.Close(); return true; } #endregion #region MD5加密 /// <summary> /// 128位MD5算法加密字符串 /// </summary> /// <param name="text">要加密的字符串</param> public static string MD5(string text) { //如果字符串为空，则返回 if (Tools.IsNullOrEmpty<string>(text)) { return ""; } //返回MD5值的字符串表示 return MD5(text); } /// <summary> /// 128位MD5算法加密Byte数组 /// </summary> /// <param name="data">要加密的Byte数组</param> public static string MD5(byte[] data) { //如果Byte数组为空，则返回 if (Tools.IsNullOrEmpty<byte[]>(data)) { return ""; } try { //创建MD5密码服务提供程序 MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); //计算传入的字节数组的哈希值 byte[] result = md5.ComputeHash(data); //释放资源 md5.Clear(); //返回MD5值的字符串表示 return Convert.ToBase64String(result); } catch { //LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message); return ""; } } #endregion #region Base64加密 /// <summary> /// Base64加密 /// </summary> /// <param name="text">要加密的字符串</param> /// <returns></returns> public static string EncodeBase64(string text) { //如果字符串为空，则返回 if (Tools.IsNullOrEmpty<string>(text)) { return ""; } try { char[] Base64Code = new char[]{'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T', 'U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n', 'o','p','q','r','s','t','u','v','w','x','y','z','0','1','2','3','4','5','6','7', '8','9','+','/','='}; byte empty = (byte)0; ArrayList byteMessage = new ArrayList(Encoding.Default.GetBytes(text)); StringBuilder outmessage; int messageLen = byteMessage.Count; int page = messageLen / 3; int use = 0; if ((use = messageLen % 3) > 0) { for (int i = 0; i < 3 - use; i++) byteMessage.Add(empty); page++; } outmessage = new System.Text.StringBuilder(page * 4); for (int i = 0; i < page; i++) { byte[] instr = new byte[3]; instr[0] = (byte)byteMessage[i * 3]; instr[1] = (byte)byteMessage[i * 3 + 1]; instr[2] = (byte)byteMessage[i * 3 + 2]; int[] outstr = new int[4]; outstr[0] = instr[0] >> 2; outstr[1] = ((instr[0] & 0x03) << 4) ^ (instr[1] >> 4); if (!instr[1].Equals(empty)) outstr[2] = ((instr[1] & 0x0f) << 2) ^ (instr[2] >> 6); else outstr[2] = 64; if (!instr[2].Equals(empty)) outstr[3] = (instr[2] & 0x3f); else outstr[3] = 64; outmessage.Append(Base64Code[outstr[0]]); outmessage.Append(Base64Code[outstr[1]]); outmessage.Append(Base64Code[outstr[2]]); outmessage.Append(Base64Code[outstr[3]]); } return outmessage.ToString(); } catch (Exception ex) { throw ex; } } #endregion #region Base64解密 /// <summary> /// Base64解密 /// </summary> /// <param name="text">要解密的字符串</param> public static string DecodeBase64(string text) { //如果字符串为空，则返回 if (Tools.IsNullOrEmpty<string>(text)) { return ""; } //将空格替换为加号 text = text.Replace(" ", "+"); try { if ((text.Length % 4) != 0) { return "包含不正确的BASE64编码"; } if (!Regex.IsMatch(text, "^[A-Z0-9/+=]*$", RegexOptions.IgnoreCase)) { return "包含不正确的BASE64编码"; } string Base64Code = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; int page = text.Length / 4; ArrayList outMessage = new ArrayList(page * 3); char[] message = text.ToCharArray(); for (int i = 0; i < page; i++) { byte[] instr = new byte[4]; instr[0] = (byte)Base64Code.IndexOf(message[i * 4]); instr[1] = (byte)Base64Code.IndexOf(message[i * 4 + 1]); instr[2] = (byte)Base64Code.IndexOf(message[i * 4 + 2]); instr[3] = (byte)Base64Code.IndexOf(message[i * 4 + 3]); byte[] outstr = new byte[3]; outstr[0] = (byte)((instr[0] << 2) ^ ((instr[1] & 0x30) >> 4)); if (instr[2] != 64) { outstr[1] = (byte)((instr[1] << 4) ^ ((instr[2] & 0x3c) >> 2)); } else { outstr[2] = 0; } if (instr[3] != 64) { outstr[2] = (byte)((instr[2] << 6) ^ instr[3]); } else { outstr[2] = 0; } outMessage.Add(outstr[0]); if (outstr[1] != 0) outMessage.Add(outstr[1]); if (outstr[2] != 0) outMessage.Add(outstr[2]); } byte[] outbyte = (byte[])outMessage.ToArray(Type.GetType("System.Byte")); return Encoding.Default.GetString(outbyte); } catch (Exception ex) { throw ex; } } #endregion } }
using System; using System.Text; using System.Security.Cryptography; namespace DotNet.Utilities { /// <summary> /// RSA加密解密及RSA签名和验证 /// </summary> public class RSACryption { public RSACryption() { } #region RSA 加密解密 #region RSA 的密钥产生 /// <summary> /// RSA 的密钥产生 产生私钥 和公钥 /// </summary> /// <param name="xmlKeys"></param> /// <param name="xmlPublicKey"></param> public void RSAKey(out string xmlKeys,out string xmlPublicKey) { System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider(); xmlKeys=rsa.ToXmlString(true); xmlPublicKey = rsa.ToXmlString(false); } #endregion #region RSA的加密函数 //############################################################################## //RSA 方式加密 //说明KEY必须是XML的行式,返回的是字符串 //在有一点需要说明！！该加密方式有 长度 限制的！！ //############################################################################## //RSA的加密函数 string public string RSAEncrypt(string xmlPublicKey,string m_strEncryptString ) { byte[] PlainTextBArray; byte[] CypherTextBArray; string Result; RSACryptoServiceProvider rsa=new RSACryptoServiceProvider(); rsa.FromXmlString(xmlPublicKey); PlainTextBArray = (new UnicodeEncoding()).GetBytes(m_strEncryptString); CypherTextBArray = rsa.Encrypt(PlainTextBArray, false); Result=Convert.ToBase64String(CypherTextBArray); return Result; } //RSA的加密函数 byte[] public string RSAEncrypt(string xmlPublicKey,byte[] EncryptString ) { byte[] CypherTextBArray; string Result; RSACryptoServiceProvider rsa=new RSACryptoServiceProvider(); rsa.FromXmlString(xmlPublicKey); CypherTextBArray = rsa.Encrypt(EncryptString, false); Result=Convert.ToBase64String(CypherTextBArray); return Result; } #endregion #region RSA的解密函数 //RSA的解密函数 string public string RSADecrypt(string xmlPrivateKey, string m_strDecryptString ) { byte[] PlainTextBArray; byte[] DypherTextBArray; string Result; System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider(); rsa.FromXmlString(xmlPrivateKey); PlainTextBArray =Convert.FromBase64String(m_strDecryptString); DypherTextBArray=rsa.Decrypt(PlainTextBArray, false); Result=(new UnicodeEncoding()).GetString(DypherTextBArray); return Result; } //RSA的解密函数 byte public string RSADecrypt(string xmlPrivateKey, byte[] DecryptString ) { byte[] DypherTextBArray; string Result; System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider(); rsa.FromXmlString(xmlPrivateKey); DypherTextBArray=rsa.Decrypt(DecryptString, false); Result=(new UnicodeEncoding()).GetString(DypherTextBArray); return Result; } #endregion #endregion #region RSA数字签名 #region 获取Hash描述表 //获取Hash描述表 public bool GetHash(string m_strSource, ref byte[] HashData) { //从字符串中取得Hash描述 byte[] Buffer; System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5"); Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource); HashData = MD5.ComputeHash(Buffer); return true; } //获取Hash描述表 public bool GetHash(string m_strSource, ref string strHashData) { //从字符串中取得Hash描述 byte[] Buffer; byte[] HashData; System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5"); Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource); HashData = MD5.ComputeHash(Buffer); strHashData = Convert.ToBase64String(HashData); return true; } //获取Hash描述表 public bool GetHash(System.IO.FileStream objFile, ref byte[] HashData) { //从文件中取得Hash描述 System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5"); HashData = MD5.ComputeHash(objFile); objFile.Close(); return true; } //获取Hash描述表 public bool GetHash(System.IO.FileStream objFile, ref string strHashData) { //从文件中取得Hash描述 byte[] HashData; System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5"); HashData = MD5.ComputeHash(objFile); objFile.Close(); strHashData = Convert.ToBase64String(HashData); return true; } #endregion #region RSA签名 //RSA签名 public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref byte[] EncryptedSignatureData) { System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPrivate); System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA); //设置签名的算法为MD5 RSAFormatter.SetHashAlgorithm("MD5"); //执行签名 EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); return true; } //RSA签名 public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref string m_strEncryptedSignatureData) { byte[] EncryptedSignatureData; System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPrivate); System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA); //设置签名的算法为MD5 RSAFormatter.SetHashAlgorithm("MD5"); //执行签名 EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData); return true; } //RSA签名 public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref byte[] EncryptedSignatureData) { byte[] HashbyteSignature; HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature); System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPrivate); System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA); //设置签名的算法为MD5 RSAFormatter.SetHashAlgorithm("MD5"); //执行签名 EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); return true; } //RSA签名 public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref string m_strEncryptedSignatureData) { byte[] HashbyteSignature; byte[] EncryptedSignatureData; HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature); System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPrivate); System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA); //设置签名的算法为MD5 RSAFormatter.SetHashAlgorithm("MD5"); //执行签名 EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData); return true; } #endregion #region RSA 签名验证 public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, byte[] DeformatterData) { System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPublic); System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA); //指定解密的时候HASH算法为MD5 RSADeformatter.SetHashAlgorithm("MD5"); if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)) { return true; } else { return false; } } public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, byte[] DeformatterData) { byte[] HashbyteDeformatter; HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter); System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPublic); System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA); //指定解密的时候HASH算法为MD5 RSADeformatter.SetHashAlgorithm("MD5"); if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)) { return true; } else { return false; } } public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, string p_strDeformatterData) { byte[] DeformatterData; System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPublic); System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA); //指定解密的时候HASH算法为MD5 RSADeformatter.SetHashAlgorithm("MD5"); DeformatterData =Convert.FromBase64String(p_strDeformatterData); if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)) { return true; } else { return false; } } public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, string p_strDeformatterData) { byte[] DeformatterData; byte[] HashbyteDeformatter; HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter); System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPublic); System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA); //指定解密的时候HASH算法为MD5 RSADeformatter.SetHashAlgorithm("MD5"); DeformatterData =Convert.FromBase64String(p_strDeformatterData); if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)) { return true; } else { return false; } } #endregion #endregion } }
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