/**
* generate a signed object that for a CMS Signed Data
* object - if encapsulate is true a copy
* of the message will be included in the signature. The content type
* is set according to the OID represented by the string signedContentType.
*/
public CmsSignedData Generate(
string signedContentType,
CmsProcessable content,
bool encapsulate)
{
Asn1EncodableVector digestAlgs = new Asn1EncodableVector();
Asn1EncodableVector signerInfos = new Asn1EncodableVector();
_digests.Clear(); // clear the current preserved digest state
//
// add the precalculated SignerInfo objects.
//
foreach (SignerInformation signer in _signers)
{
digestAlgs.Add(Helper.FixAlgID(signer.DigestAlgorithmID));
signerInfos.Add(signer.ToSignerInfo());
}
//
// add the SignerInfo objects
//
DerObjectIdentifier contentTypeOID;
bool isCounterSignature;
if (signedContentType != null)
{
contentTypeOID = new DerObjectIdentifier(signedContentType);
isCounterSignature = false;
}
else
{
contentTypeOID = CmsObjectIdentifiers.Data;
isCounterSignature = true;
}
foreach (SignerInf signer in signerInfs)
{
try
{
digestAlgs.Add(Helper.FixAlgID(signer.DigestAlgorithmID));
signerInfos.Add(signer.ToSignerInfo(contentTypeOID, content, rand, isCounterSignature));
}
catch (IOException e)
{
throw new CmsException("encoding error.", e);
}
catch (InvalidKeyException e)
{
throw new CmsException("key inappropriate for signature.", e);
}
catch (SignatureException e)
{
throw new CmsException("error creating signature.", e);
}
catch (CertificateEncodingException e)
{
throw new CmsException("error creating sid.", e);
}
}
Asn1Set certificates = null;
if (_certs.Count != 0)
{
certificates = CmsUtilities.CreateBerSetFromList(_certs);
}
Asn1Set certrevlist = null;
if (_crls.Count != 0)
{
certrevlist = CmsUtilities.CreateBerSetFromList(_crls);
}
Asn1OctetString octs = null;
if (encapsulate)
{
MemoryStream bOut = new MemoryStream();
try
{
content.Write(bOut);
}
catch (IOException e)
{
throw new CmsException("encapsulation error.", e);
}
octs = new BerOctetString(bOut.ToArray());
}
Asn1.Cms.ContentInfo encInfo = new Asn1.Cms.ContentInfo(contentTypeOID, octs);
Asn1.Cms.SignedData sd = new Asn1.Cms.SignedData(
new DerSet(digestAlgs),
encInfo,
certificates,
certrevlist,
new DerSet(signerInfos));
Asn1.Cms.ContentInfo contentInfo = new Asn1.Cms.ContentInfo(
PkcsObjectIdentifiers.SignedData, sd);
return(new CmsSignedData(content, contentInfo));
}
/**
* generate a signed object that for a CMS Signed Data
* object - if encapsulate is true a copy
* of the message will be included in the signature. The content type
* is set according to the OID represented by the string signedContentType.
*/
public CmsSignedData Generate(
string signedContentType,
CmsProcessable content,
bool encapsulate)
{
Asn1EncodableVector digestAlgs = new Asn1EncodableVector();
Asn1EncodableVector signerInfos = new Asn1EncodableVector();
_digests.Clear(); // clear the current preserved digest state
//
// add the precalculated SignerInfo objects.
//
foreach (SignerInformation signer in _signers)
{
digestAlgs.Add(Helper.FixAlgID(signer.DigestAlgorithmID));
signerInfos.Add(signer.ToSignerInfo());
}
//
// add the SignerInfo objects
//
DerObjectIdentifier contentTypeOID;
bool isCounterSignature;
if (signedContentType != null)
{
contentTypeOID = new DerObjectIdentifier(signedContentType);
isCounterSignature = false;
}
else
{
contentTypeOID = CmsObjectIdentifiers.Data;
isCounterSignature = true;
}
foreach (SignerInf signer in signerInfs)
{
try
{
digestAlgs.Add(Helper.FixAlgID(signer.DigestAlgorithmID));
signerInfos.Add(signer.ToSignerInfo(contentTypeOID, content, rand, isCounterSignature));
}
catch (IOException e)
{
throw new CmsException("encoding error.", e);
}
catch (InvalidKeyException e)
{
throw new CmsException("key inappropriate for signature.", e);
}
catch (SignatureException e)
{
throw new CmsException("error creating signature.", e);
}
catch (CertificateEncodingException e)
{
throw new CmsException("error creating sid.", e);
}
}
Asn1Set certificates = null;
if (_certs.Count != 0)
{
certificates = CmsUtilities.CreateBerSetFromList(_certs);
}
Asn1Set certrevlist = null;
if (_crls.Count != 0)
{
certrevlist = CmsUtilities.CreateBerSetFromList(_crls);
}
Asn1OctetString octs = null;
if (encapsulate)
{
MemoryStream bOut = new MemoryStream();
try
{
content.Write(bOut);
}
catch (IOException e)
{
throw new CmsException("encapsulation error.", e);
}
octs = new BerOctetString(bOut.ToArray());
}
Asn1.Cms.ContentInfo encInfo = new Asn1.Cms.ContentInfo(contentTypeOID, octs);
Asn1.Cms.SignedData sd = new Asn1.Cms.SignedData(
new DerSet(digestAlgs),
encInfo,
certificates,
certrevlist,
new DerSet(signerInfos));
Asn1.Cms.ContentInfo contentInfo = new Asn1.Cms.ContentInfo(
PkcsObjectIdentifiers.SignedData, sd);
return new CmsSignedData(content, contentInfo);
}
