Decrypt from SHA256

by

You cannot decrypt the result of a One Way Hash. What you should do instead is compare a hash of the entered password versus the stored hash in the database.

Example:

var password = "1234";
var hashedPassword = Sha256encrypt(password);

var allowLogin = hashedPassword == storedPassword; //storedPassword from Database, etc.

This is only the very basics though, when using hashing algorithms you should consider using a Salt too.

More Related Contents:

  1. Encrypt and decrypt a string in C#? [closed]
  2. Encrypting/Decrypting large files (.NET)
  3. Encrypt cookies in ASP.NET
  4. Password encryption/decryption code in .NET
  5. How to Generate Unique Public and Private Key via RSA
  6. CryptographicException “Key not valid for use in specified state.” while trying to export RSAParameters of a X509 private key
  7. How to implement Triple DES in C# (complete example)
  8. Encryption and Decryption I want the method that he used to encrypt
  9. C# version of OpenSSL EVP_BytesToKey method?
  10. How can I sign a file using RSA and SHA256 with .NET?
  11. Generate and Sign Certificate Request using pure .net Framework
  12. Which cryptographic hash function should I choose?
  13. C# RSA encryption/decryption with transmission
  14. How to store/retrieve RSA public/private key
  15. Converting image to base64
  16. how to use RSA to encrypt files (huge data) in C#
  17. Encrypting credentials in a WPF application
  18. OpenSSL encryption using .NET classes
  19. Why does a bad password cause “Padding is invalid and cannot be removed”?
  20. RSA Encryption, getting bad length
  21. Cross platform (php to C# .NET) encryption/decryption with Rijndael
  22. Programmatically encrypting a config-file in .NET
  23. C# Encryption to PHP Decryption
  24. Calculating HMACSHA256 using c# to match payment provider example
  25. Rijndael 256 Encrypt/decrypt between c# and php?
  26. What is the easiest way to encrypt a password when I save it to the registry?
  27. Calculate primes p and q from private exponent (d), public exponent (e) and the modulus (n)
  28. Error occurred while decoding OAEP padding
  29. SHA1 hashing in SQLite: how?
  30. Import a Public key from somewhere else to CngKey?

Leave a Comment