Aes.cs

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using System.Diagnostics.CodeAnalysis;
using System.Runtime.Versioning;
using Internal.Cryptography;
 
namespace System.Security.Cryptography;
 
[UnsupportedOSPlatform("browser")]
public abstract class Aes : SymmetricAlgorithm
{
    private static readonly KeySizes[] s_legalBlockSizes = new KeySizes[1]
    {
        new KeySizes(128, 128, 0)
    };
 
    private static readonly KeySizes[] s_legalKeySizes = new KeySizes[1]
    {
        new KeySizes(128, 256, 64)
    };
 
    protected Aes()
    {
        LegalBlockSizesValue = s_legalBlockSizes.CloneKeySizesArray();
        LegalKeySizesValue = s_legalKeySizes.CloneKeySizesArray();
        BlockSizeValue = 128;
        FeedbackSizeValue = 8;
        KeySizeValue = 256;
        ModeValue = CipherMode.CBC;
    }
 
    public new static Aes Create()
    {
        return new AesImplementation();
    }
 
    [RequiresUnreferencedCode("The default algorithm implementations might be removed, use strong type references like 'RSA.Create()' instead.")]
    public new static Aes? Create(string algorithmName)
    {
        return (Aes)CryptoConfig.CreateFromName(algorithmName);
    }
}