Encryption and decryption UserId(INT) and Password(text) in .net core

step 1. Install sympleCrypto from nuget then proceed as

pblic void Register(User user)
{
YourDbContext db = new YourDbContext();
User User = new User();
User.UserName = user.UserName;
var crypto = new SimpleCrypto.PBKDF2();
var EncryptedPassword = crypto.Compute(user.Password); // password includes salt , you will need this salt to compare psd in future.
var Salt = crypto.Salt; // this is the salt that has been used behind the scene.
User.Password = EncryptPassword;
User.Salt = Salt;
db.Users.Add(User);
db.SaveChanges();
// do save with Ado.Net
}
/* if you want to check the same password is being entered by user as in database to confirm password/recovery*/
public static bool IsValidPassword(string EnteredPassword)
{
var salt= /* fetch salt from database*/;
var PasswordInDb= /* fetch Password from database*/;
var crypto = new SimpleCrypto.PBKDF2();
string originalPassword = crypto.Compute(PasswordInDb,Salt);
return crypto.Compare(originalPassword,EnteredPassword); // it will return true/false;
}

2 Replies

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Sachin Singh5y ago
step 1. Install sympleCrypto from nuget then proceed as
pblic void Register(User user)
     {
         YourDbContext db = new YourDbContext();
         User User = new User();
         User.UserName = user.UserName;

         var crypto = new SimpleCrypto.PBKDF2();
         var EncryptedPassword = crypto.Compute(user.Password); // password includes salt , you will need this salt to compare psd in future.
         var Salt = crypto.Salt;  // this is the salt that has been used behind the scene.
         User.Password = EncryptPassword;
         User.Salt = Salt;

         db.Users.Add(User);
         db.SaveChanges();

       // do save with Ado.Net
     }


     /* if you want to check the same password is being entered by user as in database to confirm password/recovery*/
      public static bool IsValidPassword(string EnteredPassword)
     {
          var salt= /* fetch salt from database*/;
         var PasswordInDb=  /* fetch Password from database*/;
          var crypto = new SimpleCrypto.PBKDF2();
          string originalPassword = crypto.Compute(PasswordInDb,Salt);
        return crypto.Compare(originalPassword,EnteredPassword);  // it will return true/false;

     }
Amit Gupta5y ago
You can use many algorithm to achive this, here an example

https://www.c-sharpcorner.com/blogs/encrypt-and-decrypt-a-string-in-asp-net1