I’m trying to decrypt strings with aes using key and iv but when i use this code

public static string DecryptBS(string cipherTextGet, string keyGet, string ivGet)
        {
            byte[] ciphertext = Encoding.UTF8.GetBytes(cipherTextGet);
            byte[] key = Encoding.UTF8.GetBytes(keyGet);
            byte[] iv = Encoding.UTF8.GetBytes(ivGet);
            using (Aes aesAlg = Aes.Create())
            {
                aesAlg.Key = key;
                aesAlg.IV = iv;
               ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
               byte[] decryptedBytes;
               using (var msDecrypt = new System.IO.MemoryStream(ciphertext))
                {
                    using (var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
                    {
                        using (var msPlain = new System.IO.MemoryStream())
                        {
                            csDecrypt.CopyTo(msPlain);
                            decryptedBytes = msPlain.ToArray();
                        }
                    }
                }
               return Encoding.UTF8.GetString(decryptedBytes);
            }
        

it gives me “The input data is not a complete block.” error i tried so many ways to fix but nothing changed

I want this code to give me a string output but it just throws error in
plaintext = srDecrypt.ReadToEnd(); line.
I use CBC and I’m using keys and iv’s that has right lengths.

Unhandled exception. System.Security.Cryptography.CryptographicException: The input data is not a complete block.
   at System.Security.Cryptography.UniversalCryptoDecryptor.UncheckedTransformFinalBlock(ReadOnlySpan`1 inputBuffer, Span`1 outputBuffer)
   at System.Security.Cryptography.UniversalCryptoDecryptor.UncheckedTransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount)
   at System.Security.Cryptography.UniversalCryptoTransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount)
   at System.Security.Cryptography.CryptoStream.ReadAsyncCore(Memory`1 buffer, CancellationToken cancellationToken, Boolean useAsync)
   at System.Security.Cryptography.CryptoStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at System.Security.Cryptography.CryptoStream.CopyTo(Stream destination, Int32 bufferSize)
   at SKYFALL_V0002.EncryptionSystem.DecryptBS(String cipherTextGet, String keyGet, String ivGet) in /Users/serhan/Desktop/SKYFALL/SKYFALL DEMOS/SKYFALL_V0002/EncryptionSystem.cs:line 53

It gives me this