public CmsEnvelopedDataParser(
Stream envelopedData)
: base(envelopedData)
{
this._attrNotRead = true;
this.envelopedData = new EnvelopedDataParser(
(Asn1SequenceParser)this.contentInfo.GetContent(Asn1Tags.Sequence));
// TODO Validate version?
//DerInteger version = this.envelopedData.Version;
//
// read the recipients
//
Asn1Set recipientInfos = Asn1Set.GetInstance(this.envelopedData.GetRecipientInfos().ToAsn1Object());
//
// read the encrypted content info
//
EncryptedContentInfoParser encInfo = this.envelopedData.GetEncryptedContentInfo();
this._encAlg = encInfo.ContentEncryptionAlgorithm;
CmsReadable readable = new CmsProcessableInputStream(
((Asn1OctetStringParser)encInfo.GetEncryptedContent(Asn1Tags.OctetString)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsEnvelopedSecureReadable(
this._encAlg, readable);
//
// build the RecipientInformationStore
//
this.recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(
recipientInfos, secureReadable);
}
public CmsEnvelopedDataParser(
Stream envelopedData)
: base(envelopedData)
{
this._attrNotRead = true;
this.envelopedData = new EnvelopedDataParser(
(Asn1SequenceParser)this.contentInfo.GetContent(Asn1Tags.Sequence));
// TODO Validate version?
//DerInteger version = this.envelopedData.Version;
//
// read the recipients
//
Asn1Set recipientInfos = Asn1Set.GetInstance(this.envelopedData.GetRecipientInfos().ToAsn1Object());
//
// read the encrypted content info
//
EncryptedContentInfoParser encInfo = this.envelopedData.GetEncryptedContentInfo();
this._encAlg = encInfo.ContentEncryptionAlgorithm;
CmsReadable readable = new CmsProcessableInputStream(
((Asn1OctetStringParser)encInfo.GetEncryptedContent(Asn1Tags.OctetString)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsEnvelopedSecureReadable(
this._encAlg, readable);
//
// build the RecipientInformationStore
//
this.recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(
recipientInfos, secureReadable);
}
public CmsAuthenticatedDataParser(
Stream envelopedData)
: base(envelopedData)
{
this.authAttrNotRead = true;
this.authData = new AuthenticatedDataParser(
(Asn1SequenceParser)contentInfo.GetContent(Asn1Tags.Sequence));
// TODO Validate version?
//DerInteger version = this.authData.getVersion();
//
// read the recipients
//
Asn1Set recipientInfos = Asn1Set.GetInstance(authData.GetRecipientInfos().ToAsn1Object());
this.macAlg = authData.GetMacAlgorithm();
//
// read the authenticated content info
//
ContentInfoParser data = authData.GetEnapsulatedContentInfo();
CmsReadable readable = new CmsProcessableInputStream(
((Asn1OctetStringParser)data.GetContent(Asn1Tags.OctetString)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsAuthenticatedSecureReadable(
this.macAlg, readable);
//
// build the RecipientInformationStore
//
this._recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(
recipientInfos, secureReadable);
}
public CmsReadable GetReadable(KeyParameter sKey)
{
string id = this.algorithm.ObjectID.Id;
try
{
this.mac = MacUtilities.GetMac(id);
this.mac.Init(sKey);
}
catch (SecurityUtilityException e)
{
throw new CmsException("couldn't create cipher.", e);
}
catch (InvalidKeyException e2)
{
throw new CmsException("key invalid in message.", e2);
}
catch (IOException e3)
{
throw new CmsException("error decoding algorithm parameters.", e3);
}
CmsReadable result;
try
{
result = new CmsProcessableInputStream(new TeeInputStream(this.readable.GetInputStream(), new MacOutputStream(this.mac)));
}
catch (IOException e4)
{
throw new CmsException("error reading content.", e4);
}
return(result);
}
public CmsEnvelopedDataParser(Stream envelopedData) : base(envelopedData)
{
this._attrNotRead = true;
this.envelopedData = new EnvelopedDataParser((Asn1SequenceParser)this.contentInfo.GetContent(16));
Asn1Set instance = Asn1Set.GetInstance(this.envelopedData.GetRecipientInfos().ToAsn1Object());
EncryptedContentInfoParser encryptedContentInfo = this.envelopedData.GetEncryptedContentInfo();
this._encAlg = encryptedContentInfo.ContentEncryptionAlgorithm;
CmsReadable readable = new CmsProcessableInputStream(((Asn1OctetStringParser)encryptedContentInfo.GetEncryptedContent(4)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsEnvelopedSecureReadable(this._encAlg, readable);
this.recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(instance, secureReadable);
}
} //IL_0003: Unknown result type (might be due to invalid IL or missing references)
//IL_000d: Expected O, but got Unknown
public CmsAuthenticatedDataParser(Stream envelopedData)
: base(envelopedData)
{
authAttrNotRead = true;
authData = new AuthenticatedDataParser((Asn1SequenceParser)contentInfo.GetContent(16));
Asn1Set instance = Asn1Set.GetInstance(authData.GetRecipientInfos().ToAsn1Object());
macAlg = authData.GetMacAlgorithm();
ContentInfoParser enapsulatedContentInfo = authData.GetEnapsulatedContentInfo();
CmsReadable readable = new CmsProcessableInputStream(((Asn1OctetStringParser)enapsulatedContentInfo.GetContent(4)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsAuthenticatedSecureReadable(macAlg, readable);
_recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(instance, secureReadable);
}
public CmsReadable GetReadable(KeyParameter sKey)
{
try
{
this.cipher = CipherUtilities.GetCipher(this.algorithm.ObjectID);
Asn1Encodable parameters = this.algorithm.Parameters;
Asn1Object asn1Object = (parameters == null) ? null : parameters.ToAsn1Object();
ICipherParameters cipherParameters = sKey;
if (asn1Object != null && !(asn1Object is Asn1Null))
{
cipherParameters = ParameterUtilities.GetCipherParameters(this.algorithm.ObjectID, cipherParameters, asn1Object);
}
else
{
string id = this.algorithm.ObjectID.Id;
if (id.Equals(CmsEnvelopedGenerator.DesEde3Cbc) || id.Equals("1.3.6.1.4.1.188.7.1.1.2") || id.Equals("1.2.840.113533.7.66.10"))
{
cipherParameters = new ParametersWithIV(cipherParameters, new byte[8]);
}
}
this.cipher.Init(false, cipherParameters);
}
catch (SecurityUtilityException e)
{
throw new CmsException("couldn't create cipher.", e);
}
catch (InvalidKeyException e2)
{
throw new CmsException("key invalid in message.", e2);
}
catch (IOException e3)
{
throw new CmsException("error decoding algorithm parameters.", e3);
}
CmsReadable result;
try
{
result = new CmsProcessableInputStream(new CipherStream(this.readable.GetInputStream(), this.cipher, null));
}
catch (IOException e4)
{
throw new CmsException("error reading content.", e4);
}
return(result);
}
Stream Envelope(CmsRecipientCollection recipients, Stream content)
{
var cms = new CmsEnvelopedDataGenerator ();
int count = 0;
foreach (var recipient in recipients) {
cms.AddKeyTransRecipient (recipient.Certificate);
count++;
}
if (count == 0)
throw new ArgumentException ("No recipients specified.", "recipients");
// FIXME: how to decide which algorithm to use?
var input = new CmsProcessableInputStream (content);
var envelopedData = cms.Generate (input, CmsEnvelopedGenerator.DesEde3Cbc);
return new MemoryStream (envelopedData.GetEncoded (), false);
}
/// <summary>
/// Compress the specified stream.
/// </summary>
/// <returns>A new <see cref="MimeKit.Cryptography.ApplicationPkcs7Mime"/> instance
/// containing the compressed content.</returns>
/// <param name="stream">The stream to compress.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="stream"/> is <c>null</c>.
/// </exception>
/// <exception cref="Org.BouncyCastle.Cms.CmsException">
/// An error occurred in the cryptographic message syntax subsystem.
/// </exception>
public ApplicationPkcs7Mime Compress(Stream stream)
{
if (stream == null)
throw new ArgumentNullException ("stream");
var compresser = new CmsCompressedDataGenerator ();
var processable = new CmsProcessableInputStream (stream);
var compressed = compresser.Generate (processable, CmsCompressedDataGenerator.ZLib);
var encoded = compressed.GetEncoded ();
return new ApplicationPkcs7Mime (SecureMimeType.CompressedData, new MemoryStream (encoded, false));
}
public CmsAuthenticatedDataParser(
Stream envelopedData)
: base(envelopedData)
{
this.authAttrNotRead = true;
this.authData = new AuthenticatedDataParser(
(Asn1SequenceParser)contentInfo.GetContent(Asn1Tags.Sequence));
// TODO Validate version?
//DerInteger version = this.authData.getVersion();
//
// read the recipients
//
Asn1Set recipientInfos = Asn1Set.GetInstance(authData.GetRecipientInfos().ToAsn1Object());
this.macAlg = authData.GetMacAlgorithm();
//
// read the authenticated content info
//
ContentInfoParser data = authData.GetEnapsulatedContentInfo();
CmsReadable readable = new CmsProcessableInputStream(
((Asn1OctetStringParser)data.GetContent(Asn1Tags.OctetString)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsAuthenticatedSecureReadable(
this.macAlg, readable);
//
// build the RecipientInformationStore
//
this._recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(
recipientInfos, secureReadable);
}
