public byte[] Encode()
{
if (!_hasData)
{
throw new InvalidOperationException(SR.Cryptography_Cms_MessageNotSigned);
}
try
{
using (AsnWriter writer = new AsnWriter(AsnEncodingRules.DER))
{
_signedData.Encode(writer);
return(PkcsHelpers.EncodeContentInfo(writer.Encode(), Oids.Pkcs7Signed));
}
}
catch (CryptographicException) when(!Detached)
{
// If we can't write the contents back out then the most likely culprit is an
// indefinite length encoding in the content field. To preserve as much input data
// as possible while still maintaining our expectations of sorting any SET OF values,
// do the following:
// * Write the DER normalized version of the SignedData in detached mode.
// * BER-decode that structure
// * Copy the content field over
// * BER-write the modified structure.
SignedDataAsn copy = _signedData;
copy.EncapContentInfo.Content = null;
Debug.Assert(_signedData.EncapContentInfo.Content != null);
using (AsnWriter detachedWriter = new AsnWriter(AsnEncodingRules.DER))
{
copy.Encode(detachedWriter);
copy = SignedDataAsn.Decode(detachedWriter.Encode(), AsnEncodingRules.BER);
}
copy.EncapContentInfo.Content = _signedData.EncapContentInfo.Content;
using (AsnWriter attachedWriter = new AsnWriter(AsnEncodingRules.BER))
{
copy.Encode(attachedWriter);
return(PkcsHelpers.EncodeContentInfo(attachedWriter.Encode(), Oids.Pkcs7Signed));
}
}
}
public byte[] Encode()
{
if (!_hasData)
{
throw new InvalidOperationException(SR.Cryptography_Cms_MessageNotSigned);
}
using (AsnWriter writer = new AsnWriter(AsnEncodingRules.DER))
{
_signedData.Encode(writer);
return(PkcsHelpers.EncodeContentInfo(writer.Encode(), Oids.Pkcs7Signed));
}
}