RSAOAEPKeyExchangeDeformatter.cs

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using System.Runtime.Versioning;
 
namespace System.Security.Cryptography;
 
[UnsupportedOSPlatform("browser")]
public class RSAOAEPKeyExchangeDeformatter : AsymmetricKeyExchangeDeformatter
{
    private RSA _rsaKey;
 
    public override string? Parameters
    {
        get
        {
            return null;
        }
        set
        {
        }
    }
 
    public RSAOAEPKeyExchangeDeformatter()
    {
    }
 
    public RSAOAEPKeyExchangeDeformatter(AsymmetricAlgorithm key)
    {
        if (key == null)
        {
            throw new ArgumentNullException("key");
        }
        _rsaKey = (RSA)key;
    }
 
    public override byte[] DecryptKeyExchange(byte[] rgbData)
    {
        if (_rsaKey == null)
        {
            throw new CryptographicUnexpectedOperationException(System.SR.Cryptography_MissingKey);
        }
        return _rsaKey.Decrypt(rgbData, RSAEncryptionPadding.OaepSHA1);
    }
 
    public override void SetKey(AsymmetricAlgorithm key)
    {
        if (key == null)
        {
            throw new ArgumentNullException("key");
        }
        _rsaKey = (RSA)key;
    }
}