今天小编就为大家带来一篇C#中的常见加密解密类的文章。小编觉得挺不错的,为此分享给大家做个参考。一起跟随小编过来看看吧。
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常见的加密方式分为可逆和不可逆两种方式
可逆:RSA,AES,DES等
不可逆:常见的MD5,SHAD等
常见的加密方式封装到一个Password类中
public class Password { /// <summary> /// 此代码示例通过创建哈希字符串适用于任何 MD5 哈希函数 (在任何平台) 上创建 32 个字符的十六进制格式哈希字符串 /// 官网案例改编 /// </summary> /// <param name="source"></param> /// <returns></returns> public static string Get32MD5One(string source) { using (System.Security.Cryptography.MD5 md5Hash = System.Security.Cryptography.MD5.Create()) { byte[] data = md5Hash.ComputeHash(System.Text.Encoding.UTF8.GetBytes(source)); System.Text.StringBuilder sBuilder = new System.Text.StringBuilder(); for (int i = 0; i < data.Length; i++) { sBuilder.Append(data[i].ToString("x2")); } string hash = sBuilder.ToString(); return hash.ToUpper(); } } /// <summary> /// 获取16位md5加密 /// </summary> /// <param name="source"></param> /// <returns></returns> public static string Get16MD5One(string source) { using (System.Security.Cryptography.MD5 md5Hash = System.Security.Cryptography.MD5.Create()) { byte[] data = md5Hash.ComputeHash(System.Text.Encoding.UTF8.GetBytes(source)); //转换成字符串,并取9到25位 string sBuilder = BitConverter.ToString(data, 4, 8); //BitConverter转换出来的字符串会在每个字符中间产生一个分隔符,需要去除掉 sBuilder = sBuilder.Replace("-", ""); return sBuilder.ToString().ToUpper(); } } //// <summary> /// </summary> /// <param name="strSource">需要加密的明文</param> /// <returns>返回32位加密结果,该结果取32位加密结果的第9位到25位</returns> public static string Get32MD5Two(string source) { System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider(); //获取密文字节数组 byte[] bytResult = md5.ComputeHash(System.Text.Encoding.Default.GetBytes(source)); //转换成字符串,32位 string strResult = BitConverter.ToString(bytResult); //BitConverter转换出来的字符串会在每个字符中间产生一个分隔符,需要去除掉 strResult = strResult.Replace("-", ""); return strResult.ToUpper(); } //// <summary> /// </summary> /// <param name="strSource">需要加密的明文</param> /// <returns>返回16位加密结果,该结果取32位加密结果的第9位到25位</returns> public static string Get16MD5Two(string source) { System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider(); //获取密文字节数组 byte[] bytResult = md5.ComputeHash(System.Text.Encoding.Default.GetBytes(source)); //转换成字符串,并取9到25位 string strResult = BitConverter.ToString(bytResult, 4, 8); //BitConverter转换出来的字符串会在每个字符中间产生一个分隔符,需要去除掉 strResult = strResult.Replace("-", ""); return strResult.ToUpper(); } //SHA为不可逆加密方式 public static string SHA1Encrypt(string normalTxt) { var bytes = System.Text.Encoding.Default.GetBytes(normalTxt); var SHA = new System.Security.Cryptography.SHA1CryptoServiceProvider(); var encryptbytes = SHA.ComputeHash(bytes); return Convert.ToBase64String(encryptbytes); } public static string SHA256Encrypt(string normalTxt) { var bytes = System.Text.Encoding.Default.GetBytes(normalTxt); var SHA256 = new System.Security.Cryptography.SHA256CryptoServiceProvider(); var encryptbytes = SHA256.ComputeHash(bytes); return Convert.ToBase64String(encryptbytes); } public static string SHA384Encrypt(string normalTxt) { var bytes = System.Text.Encoding.Default.GetBytes(normalTxt); var SHA384 = new System.Security.Cryptography.SHA384CryptoServiceProvider(); var encryptbytes = SHA384.ComputeHash(bytes); return Convert.ToBase64String(encryptbytes); } public string SHA512Encrypt(string normalTxt) { var bytes = System.Text.Encoding.Default.GetBytes(normalTxt); var SHA512 = new System.Security.Cryptography.SHA512CryptoServiceProvider(); var encryptbytes = SHA512.ComputeHash(bytes); return Convert.ToBase64String(encryptbytes); } /// <summary> /// 将base64格式,转换utf8 /// </summary> /// <param name="content">解密内容</param> /// <returns></returns> public static string Base64Decode(string content) { byte[] bytes = Convert.FromBase64String(content); return System.Text.Encoding.UTF8.GetString(bytes); } /// <summary> /// DES加密数据 /// </summary> /// <param name="Text"></param> /// <param name="sKey"></param> /// <returns></returns> public static string DESEncryption(string Text, string sKey=null) { sKey = sKey ?? "zhiqiang"; try { System.Security.Cryptography.DESCryptoServiceProvider des = new System.Security.Cryptography.DESCryptoServiceProvider(); byte[] inputByteArray; inputByteArray = System.Text.Encoding.Default.GetBytes(Text); string md5SKey = Get32MD5One(sKey).Substring(0, 8); des.Key = System.Text.ASCIIEncoding.ASCII.GetBytes(md5SKey); des.IV = System.Text.ASCIIEncoding.ASCII.GetBytes(md5SKey); System.IO.MemoryStream ms = new System.IO.MemoryStream(); System.Security.Cryptography.CryptoStream cs = new System.Security.Cryptography.CryptoStream(ms, des.CreateEncryptor(), System.Security.Cryptography.CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); System.Text.StringBuilder ret = new System.Text.StringBuilder(); foreach (byte b in ms.ToArray()) { ret.AppendFormat("{0:X2}", b); } return ret.ToString(); }catch { return "error"; } } /// <summary> /// DES解密数据 /// </summary> /// <param name="Text"></param> /// <param name="sKey"></param> /// <returns></returns> public static string DESDecrypt(string Text, string sKey=null) { sKey = sKey ?? "zhiqiang"; try { System.Security.Cryptography.DESCryptoServiceProvider des = new System.Security.Cryptography.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; } string md5SKey = Get32MD5One(sKey).Substring(0, 8); des.Key = System.Text.ASCIIEncoding.ASCII.GetBytes(md5SKey); des.IV = System.Text.ASCIIEncoding.ASCII.GetBytes(md5SKey); System.IO.MemoryStream ms = new System.IO.MemoryStream(); System.Security.Cryptography.CryptoStream cs = new System.Security.Cryptography.CryptoStream(ms, des.CreateDecryptor(), System.Security.Cryptography.CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); return System.Text.Encoding.Default.GetString(ms.ToArray()); }catch { return "error"; } } /// <summary> /// RSA加密数据 /// </summary> /// <param name="express"></param> /// <param name="sKey"></param> /// <returns></returns> public static string RSAEncryption(string express, string KeyContainerName = null) { System.Security.Cryptography.CspParameters param = new System.Security.Cryptography.CspParameters(); param.KeyContainerName = KeyContainerName ?? "zhiqiang"; //密匙容器的名称,保持加密解密一致才能解密成功 using (System.Security.Cryptography.RSACryptoServiceProvider rsa = new System.Security.Cryptography.RSACryptoServiceProvider(param)) { byte[] plaindata = System.Text.Encoding.Default.GetBytes(express);//将要加密的字符串转换为字节数组 byte[] encryptdata = rsa.Encrypt(plaindata, false);//将加密后的字节数据转换为新的加密字节数组 return Convert.ToBase64String(encryptdata);//将加密后的字节数组转换为字符串 } } /// <summary> /// RSA解密数据 /// </summary> /// <param name="express"></param> /// <param name="sKey"></param> /// <returns></returns> public static string RSADecrypt(string ciphertext, string KeyContainerName = null) { System.Security.Cryptography.CspParameters param = new System.Security.Cryptography.CspParameters(); param.KeyContainerName = KeyContainerName ?? "zhiqiang"; using (System.Security.Cryptography.RSACryptoServiceProvider rsa = new System.Security.Cryptography.RSACryptoServiceProvider(param)) { byte[] encryptdata = Convert.FromBase64String(ciphertext); byte[] decryptdata = rsa.Decrypt(encryptdata, false); return System.Text.Encoding.Default.GetString(decryptdata); } } }
以上就是C#中的常见加密解密类的具体内容,代码详细清楚,如果在日常工作遇到这个问题,希望你能通过这篇文章解决问题。如果想了解更多相关内容,欢迎关注创新互联行业资讯频道!
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