I would like to change the password encryption method in asp.net .core, I would like to use md5 to encrypt the password without losing all the advantages offered by the framework.
I have already created the methods of crypt and verification of the password but, in the application I have lost all the controls of authorization in the controllers and of verification of the authentication of the user, can someone help me?
MD5 is a hash algorithm!
Hash algorithms (like SHA256, SHA512, MD5) map binary strings of an arbitrary length to small binary strings of a fixed length.
Encryption is the method by which plaintext or any other type of data is converted from a readable form to an encoded version that can only be decoded by another entity if they have access to a decryption key.
Use MD5 only for compatibility with legacy applications and data, But still if you want to hash a plain text using md5 u can use below sample code:
using System;
using System.Text;
using System.Security.Cryptography;
public class Program
{
public static void Main()
{
string source = "Hello World!";
using (MD5 md5Hash = MD5.Create())
{
string hash = GetMd5Hash(md5Hash, source);
Console.WriteLine("The MD5 hash of " + source + " is: " + hash + ".");
}
}
static string GetMd5Hash(MD5 md5Hash, string input)
{
// Convert the input string to a byte array and compute the hash.
byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(input));
StringBuilder sBuilder = new StringBuilder();
for (int i = 0; i < data.Length; i++)
{
sBuilder.Append(data[i].ToString("x2"));
}
return sBuilder.ToString();
}
}
For complete understanding about this topic u can follow below link that I copy it from Microsoft docs: https://learn.microsoft.com/en-us/dotnet/api/system.security.cryptography.md5?view=netframework-4.8
Same as @Hamid but with extension
public static class StringExtension
{
public static string GetMd5Hash(this string input)
{
using MD5 md5Hash = MD5.Create();
byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(input));
StringBuilder sBuilder = new StringBuilder();
for (int i = 0; i < data.Length; i++)
{
sBuilder.Append(data[i].ToString("x2"));
}
return sBuilder.ToString();
}
}
So, you can use it like var encodedPassword = password.GetMd5Hash();
