/
CmsRecipient.cs
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/
CmsRecipient.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Diagnostics;
using System.Security.Cryptography.X509Certificates;
namespace System.Security.Cryptography.Pkcs
{
public sealed class CmsRecipient
{
public CmsRecipient(X509Certificate2 certificate)
: this(SubjectIdentifierType.IssuerAndSerialNumber, certificate)
{
}
#if NETSTANDARD2_0
internal
#else
public
#endif
CmsRecipient(X509Certificate2 certificate, RSAEncryptionPadding rsaEncryptionPadding)
: this(certificate)
{
if (rsaEncryptionPadding is null)
{
throw new ArgumentNullException(nameof(rsaEncryptionPadding));
}
ValidateRSACertificate(certificate);
RSAEncryptionPadding = rsaEncryptionPadding;
}
#if NETSTANDARD2_0
internal
#else
public
#endif
CmsRecipient(SubjectIdentifierType recipientIdentifierType, X509Certificate2 certificate, RSAEncryptionPadding rsaEncryptionPadding)
: this(recipientIdentifierType, certificate)
{
if (rsaEncryptionPadding is null)
{
throw new ArgumentNullException(nameof(rsaEncryptionPadding));
}
ValidateRSACertificate(certificate);
RSAEncryptionPadding = rsaEncryptionPadding;
}
public CmsRecipient(SubjectIdentifierType recipientIdentifierType, X509Certificate2 certificate)
{
if (certificate is null)
{
throw new ArgumentNullException(nameof(certificate));
}
switch (recipientIdentifierType)
{
case SubjectIdentifierType.Unknown:
recipientIdentifierType = SubjectIdentifierType.IssuerAndSerialNumber;
break;
case SubjectIdentifierType.IssuerAndSerialNumber:
break;
case SubjectIdentifierType.SubjectKeyIdentifier:
break;
default:
throw new CryptographicException(SR.Format(SR.Cryptography_Cms_Invalid_Subject_Identifier_Type, recipientIdentifierType));
}
RecipientIdentifierType = recipientIdentifierType;
Certificate = certificate;
}
#if NETSTANDARD2_0
internal
#else
public
#endif
RSAEncryptionPadding? RSAEncryptionPadding { get; }
public SubjectIdentifierType RecipientIdentifierType { get; }
public X509Certificate2 Certificate { get; }
private static void ValidateRSACertificate(X509Certificate2 certificate)
{
switch (certificate.GetKeyAlgorithm())
{
case Oids.Rsa:
case Oids.RsaOaep:
break;
default:
throw new CryptographicException(SR.Cryptography_Cms_Recipient_RSARequired_RSAPaddingModeSupplied);
}
}
}
}