How to Encrypted Password and Decrypt password In Database

Question

I wanna try to make a login page. and it is very secure concepts so I thought for using encryption and decryption methods in asp.net.please give me a successfully run source code. thank you

Amit Mohanty · Answer

Hey try this #region Encrypt and Decrypt method. static string SecurityKey = "3pAc0j$_S7c9gS!" ; public static string Encrypt( string toEncrypt, bool useHashing) { byte [] keyArray; byte [] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt); string key = SecurityKey; //If hashing use get hashcode regards to your key if (useHashing) { MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider(); keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key)); //Always release the resources and flush data of the Cryptographic service provide. hashmd5.Clear(); } else keyArray = UTF8Encoding.UTF8.GetBytes(key); TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider(); //set the secret key for the tripleDES algorithm tdes.Key = keyArray; //mode of operation. there are other 4 modes. //We choose ECB(Electronic code Book) tdes.Mode = CipherMode.ECB; //padding mode(if any extra byte added) tdes.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = tdes.CreateEncryptor(); //transform the specified region of bytes array to resultArray byte [] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); //Release resources held by TripleDes Encryptor tdes.Clear(); //Return the encrypted data into unreadable string format return Convert.ToBase64String(resultArray, 0, resultArray.Length); } public static string Decrypt( string cipherString, bool useHashing) { try { byte [] keyArray; //get the byte code of the string byte [] toEncryptArray = Convert.FromBase64String(cipherString); string key = SecurityKey; if (useHashing) { //if hashing was used get the hash code with regards to your key MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider(); keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key)); //release any resource held by the MD5CryptoServiceProvider hashmd5.Clear(); } else { //if hashing was not implemented get the byte code of the key keyArray = UTF8Encoding.UTF8.GetBytes(key); } TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider(); //set the secret key for the tripleDES algorithm tdes.Key = keyArray; //mode of operation. there are other 4 modes. //We choose ECB(Electronic code Book) tdes.Mode = CipherMode.ECB; //padding mode(if any extra byte added) tdes.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = tdes.CreateDecryptor(); byte [] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); //Release resources held by TripleDes Encryptor tdes.Clear(); //return the Clear decrypted TEXT return UTF8Encoding.UTF8.GetString(resultArray); } catch { return "" ; } } #endregion

How to Encrypted Password and Decrypt password In Database

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