Rijndael.cs

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using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.Versioning;
using Internal.Cryptography;
 
namespace System.Security.Cryptography;
 
[Obsolete("The Rijndael and RijndaelManaged types are obsolete. Use Aes instead.", DiagnosticId = "SYSLIB0022", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")]
[EditorBrowsable(EditorBrowsableState.Never)]
[UnsupportedOSPlatform("browser")]
public abstract class Rijndael : SymmetricAlgorithm
{
    private static readonly KeySizes[] s_legalBlockSizes = new KeySizes[1]
    {
        new KeySizes(128, 256, 64)
    };
 
    private static readonly KeySizes[] s_legalKeySizes = new KeySizes[1]
    {
        new KeySizes(128, 256, 64)
    };
 
    public new static Rijndael Create()
    {
        return new RijndaelImplementation();
    }
 
    [RequiresUnreferencedCode("The default algorithm implementations might be removed, use strong type references like 'RSA.Create()' instead.")]
    public new static Rijndael? Create(string algName)
    {
        return (Rijndael)CryptoConfig.CreateFromName(algName);
    }
 
    protected Rijndael()
    {
        LegalBlockSizesValue = s_legalBlockSizes.CloneKeySizesArray();
        LegalKeySizesValue = s_legalKeySizes.CloneKeySizesArray();
        KeySizeValue = 256;
        BlockSizeValue = 128;
        FeedbackSizeValue = BlockSizeValue;
    }
}