| public ReadCertificates ( Stream inStream ) : ICollection | ||
| inStream | Stream | |
| return | ICollection | |
public void SetUp ()
{
using (var ctx = CreateContext ()) {
var dataDir = Path.Combine ("..", "..", "TestData", "smime");
string path;
CryptographyContext.Register (ctx.GetType ());
foreach (var filename in CertificateAuthorities) {
path = Path.Combine (dataDir, filename);
using (var file = File.OpenRead (path)) {
if (ctx is DefaultSecureMimeContext) {
((DefaultSecureMimeContext) ctx).Import (file, true);
} else {
var parser = new X509CertificateParser ();
foreach (X509Certificate certificate in parser.ReadCertificates (file))
ctx.Import (certificate);
}
}
}
path = Path.Combine (dataDir, "smime.p12");
using (var file = File.OpenRead (path))
ctx.Import (file, "no.secret");
}
}
/// <summary>
/// Imports the certificate(s) from the specified stream.
/// </summary>
/// <remarks>
/// Imports the certificate(s) from the specified stream.
/// </remarks>
/// <param name="stream">The stream to import.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="stream"/> is <c>null</c>.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An error occurred reading the stream.
/// </exception>
public void Import (Stream stream)
{
if (stream == null)
throw new ArgumentNullException ("stream");
var parser = new X509CertificateParser ();
foreach (X509Certificate certificate in parser.ReadCertificates (stream)) {
if (unique.Add (certificate))
certs.Add (certificate);
}
}
private void pkcs7Test()
{
Asn1Encodable rootCert = Asn1Object.FromByteArray(CertPathTest.rootCertBin);
Asn1Encodable rootCrl = Asn1Object.FromByteArray(CertPathTest.rootCrlBin);
X509CertificateParser certParser = new X509CertificateParser();
X509CrlParser crlParser = new X509CrlParser();
SignedData sigData = new SignedData(
DerSet.Empty,
new ContentInfo(CmsObjectIdentifiers.Data, null),
new DerSet(
rootCert,
new DerTaggedObject(false, 2, Asn1Object.FromByteArray(AttrCertTest.attrCert))),
new DerSet(rootCrl),
DerSet.Empty);
ContentInfo info = new ContentInfo(CmsObjectIdentifiers.SignedData, sigData);
X509Certificate cert = certParser.ReadCertificate(info.GetEncoded());
if (cert == null || !AreEqual(cert.GetEncoded(), rootCert.ToAsn1Object().GetEncoded()))
{
Fail("PKCS7 cert not read");
}
X509Crl crl = crlParser.ReadCrl(info.GetEncoded());
if (crl == null || !AreEqual(crl.GetEncoded(), rootCrl.ToAsn1Object().GetEncoded()))
{
Fail("PKCS7 crl not read");
}
ArrayList col = new ArrayList(certParser.ReadCertificates(info.GetEncoded()));
if (col.Count != 1 || !col.Contains(cert))
{
Fail("PKCS7 cert collection not right");
}
col = new ArrayList(crlParser.ReadCrls(info.GetEncoded()));
if (col.Count != 1 || !col.Contains(crl))
{
Fail("PKCS7 crl collection not right");
}
// data with no certificates or CRLs
sigData = new SignedData(DerSet.Empty, new ContentInfo(CmsObjectIdentifiers.Data, null), DerSet.Empty, DerSet.Empty, DerSet.Empty);
info = new ContentInfo(CmsObjectIdentifiers.SignedData, sigData);
cert = certParser.ReadCertificate(info.GetEncoded());
if (cert != null)
{
Fail("PKCS7 cert present");
}
crl = crlParser.ReadCrl(info.GetEncoded());
if (crl != null)
{
Fail("PKCS7 crl present");
}
// data with absent certificates and CRLS
sigData = new SignedData(DerSet.Empty, new ContentInfo(CmsObjectIdentifiers.Data, null), null, null, DerSet.Empty);
info = new ContentInfo(CmsObjectIdentifiers.SignedData, sigData);
cert = certParser.ReadCertificate(info.GetEncoded());
if (cert != null)
{
Fail("PKCS7 cert present");
}
crl = crlParser.ReadCrl(info.GetEncoded());
if (crl != null)
{
Fail("PKCS7 crl present");
}
//
// sample message
//
ICollection certCol = certParser.ReadCertificates(pkcs7CrlProblem);
ICollection crlCol = crlParser.ReadCrls(pkcs7CrlProblem);
if (crlCol.Count != 0)
{
Fail("wrong number of CRLs: " + crlCol.Count);
}
if (certCol.Count != 4)
{
Fail("wrong number of Certs: " + certCol.Count);
}
}
/**
* Verifies a signature using the sub-filter adbe.pkcs7.detached or
* adbe.pkcs7.sha1.
* @param contentsKey the /Contents key
* @param provider the provider or <code>null</code> for the default provider
* @throws SecurityException on error
* @throws CRLException on error
* @throws InvalidKeyException on error
* @throws CertificateException on error
* @throws NoSuchProviderException on error
* @throws NoSuchAlgorithmException on error
*/
public PdfPKCS7(byte[] contentsKey) {
Asn1InputStream din = new Asn1InputStream(new MemoryStream(contentsKey));
//
// Basic checks to make sure it's a PKCS#7 SignedData Object
//
Asn1Object pkcs;
try {
pkcs = din.ReadObject();
}
catch {
throw new ArgumentException("can't decode PKCS7SignedData object");
}
if (!(pkcs is Asn1Sequence)) {
throw new ArgumentException("Not a valid PKCS#7 object - not a sequence");
}
Asn1Sequence signedData = (Asn1Sequence)pkcs;
DerObjectIdentifier objId = (DerObjectIdentifier)signedData[0];
if (!objId.Id.Equals(ID_PKCS7_SIGNED_DATA))
throw new ArgumentException("Not a valid PKCS#7 object - not signed data");
Asn1Sequence content = (Asn1Sequence)((DerTaggedObject)signedData[1]).GetObject();
// the positions that we care are:
// 0 - version
// 1 - digestAlgorithms
// 2 - possible ID_PKCS7_DATA
// (the certificates and crls are taken out by other means)
// last - signerInfos
// the version
version = ((DerInteger)content[0]).Value.IntValue;
// the digestAlgorithms
digestalgos = new Hashtable();
IEnumerator e = ((Asn1Set)content[1]).GetEnumerator();
while (e.MoveNext())
{
Asn1Sequence s = (Asn1Sequence)e.Current;
DerObjectIdentifier o = (DerObjectIdentifier)s[0];
digestalgos[o.Id] = null;
}
// the certificates and crls
X509CertificateParser cf = new X509CertificateParser();
certs = new ArrayList();
foreach (X509Certificate cc in cf.ReadCertificates(contentsKey)) {
certs.Add(cc);
}
crls = new ArrayList();
// the possible ID_PKCS7_DATA
Asn1Sequence rsaData = (Asn1Sequence)content[2];
if (rsaData.Count > 1) {
DerOctetString rsaDataContent = (DerOctetString)((DerTaggedObject)rsaData[1]).GetObject();
RSAdata = rsaDataContent.GetOctets();
}
// the signerInfos
int next = 3;
while (content[next] is DerTaggedObject)
++next;
Asn1Set signerInfos = (Asn1Set)content[next];
if (signerInfos.Count != 1)
throw new ArgumentException("This PKCS#7 object has multiple SignerInfos - only one is supported at this time");
Asn1Sequence signerInfo = (Asn1Sequence)signerInfos[0];
// the positions that we care are
// 0 - version
// 1 - the signing certificate serial number
// 2 - the digest algorithm
// 3 or 4 - digestEncryptionAlgorithm
// 4 or 5 - encryptedDigest
signerversion = ((DerInteger)signerInfo[0]).Value.IntValue;
// Get the signing certificate
Asn1Sequence issuerAndSerialNumber = (Asn1Sequence)signerInfo[1];
BigInteger serialNumber = ((DerInteger)issuerAndSerialNumber[1]).Value;
foreach (X509Certificate cert in certs) {
if (serialNumber.Equals(cert.SerialNumber)) {
signCert = cert;
break;
}
}
if (signCert == null) {
throw new ArgumentException("Can't find signing certificate with serial " + serialNumber.ToString(16));
}
CalcSignCertificateChain();
digestAlgorithm = ((DerObjectIdentifier)((Asn1Sequence)signerInfo[2])[0]).Id;
next = 3;
if (signerInfo[next] is Asn1TaggedObject) {
Asn1TaggedObject tagsig = (Asn1TaggedObject)signerInfo[next];
Asn1Set sseq = Asn1Set.GetInstance(tagsig, false);
sigAttr = sseq.GetEncoded(Asn1Encodable.Der);
for (int k = 0; k < sseq.Count; ++k) {
Asn1Sequence seq2 = (Asn1Sequence)sseq[k];
if (((DerObjectIdentifier)seq2[0]).Id.Equals(ID_MESSAGE_DIGEST)) {
Asn1Set sset = (Asn1Set)seq2[1];
digestAttr = ((DerOctetString)sset[0]).GetOctets();
}
else if (((DerObjectIdentifier)seq2[0]).Id.Equals(ID_ADBE_REVOCATION)) {
Asn1Set setout = (Asn1Set)seq2[1];
Asn1Sequence seqout = (Asn1Sequence)setout[0];
for (int j = 0; j < seqout.Count; ++j) {
Asn1TaggedObject tg = (Asn1TaggedObject)seqout[j];
if (tg.TagNo != 1)
continue;
Asn1Sequence seqin = (Asn1Sequence)tg.GetObject();
FindOcsp(seqin);
}
}
}
if (digestAttr == null)
throw new ArgumentException("Authenticated attribute is missing the digest.");
++next;
}
digestEncryptionAlgorithm = ((DerObjectIdentifier)((Asn1Sequence)signerInfo[next++])[0]).Id;
digest = ((DerOctetString)signerInfo[next++]).GetOctets();
if (next < signerInfo.Count && (signerInfo[next] is DerTaggedObject)) {
DerTaggedObject taggedObject = (DerTaggedObject) signerInfo[next];
Asn1Set unat = Asn1Set.GetInstance(taggedObject, false);
Org.BouncyCastle.Asn1.Cms.AttributeTable attble = new Org.BouncyCastle.Asn1.Cms.AttributeTable(unat);
Org.BouncyCastle.Asn1.Cms.Attribute ts = attble[PkcsObjectIdentifiers.IdAASignatureTimeStampToken];
if (ts != null) {
Asn1Set attributeValues = ts.AttrValues;
Asn1Sequence tokenSequence = Asn1Sequence.GetInstance(attributeValues[0]);
Org.BouncyCastle.Asn1.Cms.ContentInfo contentInfo = Org.BouncyCastle.Asn1.Cms.ContentInfo.GetInstance(tokenSequence);
this.timeStampToken = new TimeStampToken(contentInfo);
}
}
if (RSAdata != null || digestAttr != null) {
messageDigest = GetHashClass();
}
sig = SignerUtilities.GetSigner(GetDigestAlgorithm());
sig.Init(false, signCert.GetPublicKey());
}
/**
* Verifies a signature using the sub-filter adbe.x509.rsa_sha1.
* @param contentsKey the /Contents key
* @param certsKey the /Cert key
* @param provider the provider or <code>null</code> for the default provider
*/
public PdfPKCS7(byte[] contentsKey, byte[] certsKey) {
X509CertificateParser cf = new X509CertificateParser();
certs = new ArrayList();
foreach (X509Certificate cc in cf.ReadCertificates(certsKey)) {
certs.Add(cc);
}
signCerts = certs;
signCert = (X509Certificate)certs[0];
crls = new ArrayList();
Asn1InputStream inp = new Asn1InputStream(new MemoryStream(contentsKey));
digest = ((DerOctetString)inp.ReadObject()).GetOctets();
sig = SignerUtilities.GetSigner("SHA1withRSA");
sig.Init(false, signCert.GetPublicKey());
}
/**
* Use this constructor if you want to verify a signature using
* the sub-filter adbe.pkcs7.detached or adbe.pkcs7.sha1.
* @param contentsKey the /Contents key
* @param tsp set to true if there's a PAdES LTV time stamp.
* @param provider the provider or <code>null</code> for the default provider
*/
public PdfPKCS7(byte[] contentsKey, bool tsp)
{
isTsp = tsp;
Asn1InputStream din = new Asn1InputStream(new MemoryStream(contentsKey));
//
// Basic checks to make sure it's a PKCS#7 SignedData Object
//
Asn1Object pkcs;
try {
pkcs = din.ReadObject();
}
catch {
throw new ArgumentException(MessageLocalization.GetComposedMessage("can.t.decode.pkcs7signeddata.object"));
}
if (!(pkcs is Asn1Sequence)) {
throw new ArgumentException(MessageLocalization.GetComposedMessage("not.a.valid.pkcs.7.object.not.a.sequence"));
}
Asn1Sequence signedData = (Asn1Sequence)pkcs;
DerObjectIdentifier objId = (DerObjectIdentifier)signedData[0];
if (!objId.Id.Equals(SecurityIDs.ID_PKCS7_SIGNED_DATA))
throw new ArgumentException(MessageLocalization.GetComposedMessage("not.a.valid.pkcs.7.object.not.signed.data"));
Asn1Sequence content = (Asn1Sequence)((Asn1TaggedObject)signedData[1]).GetObject();
// the positions that we care are:
// 0 - version
// 1 - digestAlgorithms
// 2 - possible ID_PKCS7_DATA
// (the certificates and crls are taken out by other means)
// last - signerInfos
// the version
version = ((DerInteger)content[0]).Value.IntValue;
// the digestAlgorithms
digestalgos = new Dictionary<string,object>();
IEnumerator e = ((Asn1Set)content[1]).GetEnumerator();
while (e.MoveNext())
{
Asn1Sequence s = (Asn1Sequence)e.Current;
DerObjectIdentifier o = (DerObjectIdentifier)s[0];
digestalgos[o.Id] = null;
}
// the certificates and crls
X509CertificateParser cf = new X509CertificateParser();
certs = new List<X509Certificate>();
foreach (X509Certificate cc in cf.ReadCertificates(contentsKey)) {
certs.Add(cc);
}
crls = new List<X509Crl>();
// the possible ID_PKCS7_DATA
Asn1Sequence rsaData = (Asn1Sequence)content[2];
if (rsaData.Count > 1) {
Asn1OctetString rsaDataContent = (Asn1OctetString)((Asn1TaggedObject)rsaData[1]).GetObject();
RSAdata = rsaDataContent.GetOctets();
}
// the signerInfos
int next = 3;
while (content[next] is Asn1TaggedObject)
++next;
Asn1Set signerInfos = (Asn1Set)content[next];
if (signerInfos.Count != 1)
throw new ArgumentException(MessageLocalization.GetComposedMessage("this.pkcs.7.object.has.multiple.signerinfos.only.one.is.supported.at.this.time"));
Asn1Sequence signerInfo = (Asn1Sequence)signerInfos[0];
// the positions that we care are
// 0 - version
// 1 - the signing certificate issuer and serial number
// 2 - the digest algorithm
// 3 or 4 - digestEncryptionAlgorithm
// 4 or 5 - encryptedDigest
signerversion = ((DerInteger)signerInfo[0]).Value.IntValue;
// Get the signing certificate
Asn1Sequence issuerAndSerialNumber = (Asn1Sequence)signerInfo[1];
Org.BouncyCastle.Asn1.X509.X509Name issuer = Org.BouncyCastle.Asn1.X509.X509Name.GetInstance(issuerAndSerialNumber[0]);
BigInteger serialNumber = ((DerInteger)issuerAndSerialNumber[1]).Value;
foreach (X509Certificate cert in certs) {
if (issuer.Equivalent(cert.IssuerDN) && serialNumber.Equals(cert.SerialNumber)) {
signCert = cert;
break;
}
}
if (signCert == null) {
throw new ArgumentException(MessageLocalization.GetComposedMessage("can.t.find.signing.certificate.with.serial.1",
issuer.ToString() + " / " + serialNumber.ToString(16)));
}
CalcSignCertificateChain();
digestAlgorithmOid = ((DerObjectIdentifier)((Asn1Sequence)signerInfo[2])[0]).Id;
next = 3;
if (signerInfo[next] is Asn1TaggedObject) {
Asn1TaggedObject tagsig = (Asn1TaggedObject)signerInfo[next];
Asn1Set sseq = Asn1Set.GetInstance(tagsig, false);
sigAttr = sseq.GetEncoded(Asn1Encodable.Der);
for (int k = 0; k < sseq.Count; ++k) {
Asn1Sequence seq2 = (Asn1Sequence)sseq[k];
if (((DerObjectIdentifier)seq2[0]).Id.Equals(SecurityIDs.ID_MESSAGE_DIGEST)) {
Asn1Set sset = (Asn1Set)seq2[1];
digestAttr = ((DerOctetString)sset[0]).GetOctets();
}
else if (((DerObjectIdentifier)seq2[0]).Id.Equals(SecurityIDs.ID_ADBE_REVOCATION)) {
Asn1Set setout = (Asn1Set)seq2[1];
Asn1Sequence seqout = (Asn1Sequence)setout[0];
for (int j = 0; j < seqout.Count; ++j) {
Asn1TaggedObject tg = (Asn1TaggedObject)seqout[j];
if (tg.TagNo == 1) {
Asn1Sequence seqin = (Asn1Sequence)tg.GetObject();
FindOcsp(seqin);
}
if (tg.TagNo == 0) {
Asn1Sequence seqin = (Asn1Sequence)tg.GetObject();
FindCRL(seqin);
}
}
}
}
if (digestAttr == null)
throw new ArgumentException(MessageLocalization.GetComposedMessage("authenticated.attribute.is.missing.the.digest"));
++next;
}
digestEncryptionAlgorithmOid = ((DerObjectIdentifier)((Asn1Sequence)signerInfo[next++])[0]).Id;
digest = ((Asn1OctetString)signerInfo[next++]).GetOctets();
if (next < signerInfo.Count && (signerInfo[next] is DerTaggedObject)) {
Asn1TaggedObject taggedObject = (Asn1TaggedObject) signerInfo[next];
Asn1Set unat = Asn1Set.GetInstance(taggedObject, false);
Org.BouncyCastle.Asn1.Cms.AttributeTable attble = new Org.BouncyCastle.Asn1.Cms.AttributeTable(unat);
Org.BouncyCastle.Asn1.Cms.Attribute ts = attble[PkcsObjectIdentifiers.IdAASignatureTimeStampToken];
if (ts != null && ts.AttrValues.Count > 0) {
Asn1Set attributeValues = ts.AttrValues;
Asn1Sequence tokenSequence = Asn1Sequence.GetInstance(attributeValues[0]);
Org.BouncyCastle.Asn1.Cms.ContentInfo contentInfo = Org.BouncyCastle.Asn1.Cms.ContentInfo.GetInstance(tokenSequence);
this.timeStampToken = new TimeStampToken(contentInfo);
}
}
if (isTsp) {
Org.BouncyCastle.Asn1.Cms.ContentInfo contentInfoTsp = Org.BouncyCastle.Asn1.Cms.ContentInfo.GetInstance(signedData);
this.timeStampToken = new TimeStampToken(contentInfoTsp);
TimeStampTokenInfo info = timeStampToken.TimeStampInfo;
String algOID = info.MessageImprintAlgOid;
messageDigest = DigestUtilities.GetDigest(algOID);
}
else {
if (RSAdata != null || digestAttr != null) {
messageDigest = GetHashClass();
encContDigest = GetHashClass();
}
sig = SignerUtilities.GetSigner(GetDigestAlgorithm());
sig.Init(false, signCert.GetPublicKey());
}
}
// Constructors for validating existing signatures
/**
* Use this constructor if you want to verify a signature using the sub-filter adbe.x509.rsa_sha1.
* @param contentsKey the /Contents key
* @param certsKey the /Cert key
*/
public PdfPKCS7(byte[] contentsKey, byte[] certsKey) {
X509CertificateParser cf = new X509CertificateParser();
certs = new List<X509Certificate>();
foreach (X509Certificate cc in cf.ReadCertificates(certsKey)) {
if (signCert != null)
signCert = cc;
certs.Add(cc);
}
signCerts = certs;
crls = new List<X509Crl>();
Asn1InputStream inp = new Asn1InputStream(new MemoryStream(contentsKey));
digest = ((Asn1OctetString)inp.ReadObject()).GetOctets();
sig = SignerUtilities.GetSigner("SHA1withRSA");
sig.Init(false, signCert.GetPublicKey());
// setting the oid to SHA1withRSA
digestAlgorithmOid = "1.2.840.10040.4.3";
digestEncryptionAlgorithmOid = "1.3.36.3.3.1.2";
}
/// <summary>
/// Herunterladen des Zertifikats
/// </summary>
/// <param name="orderId">ID des Auftrags</param>
/// <returns>Zertifikat von der OSTC (private Schlüssel fehlt hier!)</returns>
/// <remarks>Es wird eine Exception ausgelöst, wenn noch kein Schlüssel verfügbar ist.</remarks>
public async Task<IReadOnlyList<X509Certificate>> DownloadCertificateAsync(string orderId)
{
var query = new OstcSchluessel
{
Auftragsnummer = orderId,
ItemElementName = (OstcKeyType)Enum.Parse(typeof(OstcKeyType), Sender.SenderId.Type.ToString()),
Item = Sender.SenderId.Id,
};
var queryData = OstcUtils.Serialize(query, Iso88591);
ValidateData(queryData, OstcMessageType.KeyData);
var now = DateTime.Now;
var message = new TransportRequestType()
{
version = SupportedVersionsType.Item11,
profile = ExtraProfileOstc,
TransportHeader = CreateRequestHeader(now, OstcDataType.Key, ExtraScenario.RequestWithResponse),
TransportBody = new TransportRequestBodyType
{
Items = new object[]
{
new DataType
{
Item = new Base64CharSequenceType()
{
Value = queryData,
},
},
},
},
};
ValidateRequest(message, OstcMessageType.Key);
var messageData = OstcExtraSerializer.Iso88591.Serialize(message);
var request = CreateRequest(Network.Requests.KeyRequest);
using (var requestStream = await Task.Factory.FromAsync(request.BeginGetRequestStream, request.EndGetRequestStream, null))
{
requestStream.Write(messageData, 0, messageData.Length);
}
using (var response = await Task.Factory.FromAsync(request.BeginGetResponse, request.EndGetResponse, null))
{
var serializer = new XmlSerializer(typeof(TransportResponseType));
var responseData = (TransportResponseType)serializer.Deserialize(response.GetResponseStream());
var flags = responseData.TransportHeader.GetFlags().ToList();
if (flags.Any(x => x.weight == ExtraFlagWeight.Error))
throw new Ostc2Exception(flags);
var certData = ((Base64CharSequenceType)((DataType)responseData.TransportBody.Items[0]).Item).Value;
var parser = new X509CertificateParser();
var certs = parser.ReadCertificates(certData).Cast<X509Certificate>().ToList();
return certs;
}
}
/// <summary>
/// Imports a DER-encoded certificate stream.
/// </summary>
/// <remarks>
/// Imports all of the certificates in the DER-encoded stream.
/// </remarks>
/// <param name="stream">The raw certificate(s).</param>
/// <param name="trusted"><c>true</c> if the certificates are trusted.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="stream"/> is <c>null</c>.
/// </exception>
public void Import (Stream stream, bool trusted)
{
if (stream == null)
throw new ArgumentNullException ("stream");
var parser = new X509CertificateParser ();
foreach (X509Certificate certificate in parser.ReadCertificates (stream)) {
if (dbase.Find (certificate, X509CertificateRecordFields.Id) != null)
continue;
var record = new X509CertificateRecord (certificate);
record.IsTrusted = trusted;
dbase.Add (record);
}
}
public IList LoadCertificates()
{
if (!Directory.Exists(_source))
{
throw new DirectoryNotFoundException("Directory not found: " + _source);
}
List<X509Certificate> certList = new List<X509Certificate>();
string[] files = Directory.GetFiles(_source);
List<string> failures = new List<string>();
foreach (string file in files)
{
try
{
if (SkipResource(_ignore, file)) continue;
X509CertificateParser certParser = new X509CertificateParser();
using (Stream stream = new FileStream(file, FileMode.Open))
{
var certs = certParser.ReadCertificates(stream);
stream.Close();
foreach (var cert in certs)
{
certList.Add(cert as X509Certificate);
}
}
}
catch (Exception e)
{
failures.Add(string.Format("Failed loading file {0}\r\n{1}", file, e.Message));
}
}
if (failures.Count > 0)
{
string result = failures.Aggregate((current, f) => current + f + "\r\n");
throw new Exception(result);
}
return certList;
}
/**
* Verifies a signature using the sub-filter adbe.pkcs7.detached or
* adbe.pkcs7.sha1.
* @param contentsKey the /Contents key
* @param provider the provider or <code>null</code> for the default provider
* @throws SecurityException on error
* @throws CRLException on error
* @throws InvalidKeyException on error
* @throws CertificateException on error
* @throws NoSuchProviderException on error
* @throws NoSuchAlgorithmException on error
*/
public PdfPKCS7(byte[] contentsKey)
{
Asn1InputStream din = new Asn1InputStream(new MemoryStream(contentsKey));
//
// Basic checks to make sure it's a PKCS#7 SignedData Object
//
Asn1Object pkcs;
try {
pkcs = din.ReadObject();
}
catch {
throw new ArgumentException("can't decode PKCS7SignedData object");
}
if (!(pkcs is Asn1Sequence)) {
throw new ArgumentException("Not a valid PKCS#7 object - not a sequence");
}
Asn1Sequence signedData = (Asn1Sequence)pkcs;
DerObjectIdentifier objId = (DerObjectIdentifier)signedData[0];
if (!objId.Id.Equals(ID_PKCS7_SIGNED_DATA))
throw new ArgumentException("Not a valid PKCS#7 object - not signed data");
Asn1Sequence content = (Asn1Sequence)((DerTaggedObject)signedData[1]).GetObject();
// the positions that we care are:
// 0 - version
// 1 - digestAlgorithms
// 2 - possible ID_PKCS7_DATA
// (the certificates and crls are taken out by other means)
// last - signerInfos
// the version
version = ((DerInteger)content[0]).Value.IntValue;
// the digestAlgorithms
digestalgos = new Hashtable();
IEnumerator e = ((Asn1Set)content[1]).GetEnumerator();
while (e.MoveNext())
{
Asn1Sequence s = (Asn1Sequence)e.Current;
DerObjectIdentifier o = (DerObjectIdentifier)s[0];
digestalgos[o.Id] = null;
}
// the certificates and crls
X509CertificateParser cf = new X509CertificateParser();
certs = new ArrayList();
foreach (X509Certificate cc in cf.ReadCertificates(contentsKey)) {
certs.Add(cc);
}
crls = new ArrayList();
// the possible ID_PKCS7_DATA
Asn1Sequence rsaData = (Asn1Sequence)content[2];
if (rsaData.Count > 1) {
DerOctetString rsaDataContent = (DerOctetString)((DerTaggedObject)rsaData[1]).GetObject();
RSAdata = rsaDataContent.GetOctets();
}
// the signerInfos
int next = 3;
while (content[next] is DerTaggedObject)
++next;
Asn1Set signerInfos = (Asn1Set)content[next];
if (signerInfos.Count != 1)
throw new ArgumentException("This PKCS#7 object has multiple SignerInfos - only one is supported at this time");
Asn1Sequence signerInfo = (Asn1Sequence)signerInfos[0];
// the positions that we care are
// 0 - version
// 1 - the signing certificate serial number
// 2 - the digest algorithm
// 3 or 4 - digestEncryptionAlgorithm
// 4 or 5 - encryptedDigest
signerversion = ((DerInteger)signerInfo[0]).Value.IntValue;
// Get the signing certificate
Asn1Sequence issuerAndSerialNumber = (Asn1Sequence)signerInfo[1];
BigInteger serialNumber = ((DerInteger)issuerAndSerialNumber[1]).Value;
foreach (X509Certificate cert in certs) {
if (serialNumber.Equals(cert.SerialNumber)) {
signCert = cert;
break;
}
}
if (signCert == null) {
throw new ArgumentException("Can't find signing certificate with serial " + serialNumber.ToString(16));
}
digestAlgorithm = ((DerObjectIdentifier)((Asn1Sequence)signerInfo[2])[0]).Id;
next = 3;
if (signerInfo[next] is Asn1TaggedObject) {
Asn1TaggedObject tagsig = (Asn1TaggedObject)signerInfo[next];
Asn1Sequence sseq = (Asn1Sequence)tagsig.GetObject();
MemoryStream bOut = new MemoryStream();
Asn1OutputStream dout = new Asn1OutputStream(bOut);
try {
Asn1EncodableVector attribute = new Asn1EncodableVector();
for (int k = 0; k < sseq.Count; ++k) {
attribute.Add(sseq[k]);
}
dout.WriteObject(new DerSet(attribute));
dout.Close();
}
catch (IOException){}
sigAttr = bOut.ToArray();
for (int k = 0; k < sseq.Count; ++k) {
Asn1Sequence seq2 = (Asn1Sequence)sseq[k];
if (((DerObjectIdentifier)seq2[0]).Id.Equals(ID_MESSAGE_DIGEST)) {
Asn1Set sset = (Asn1Set)seq2[1];
digestAttr = ((DerOctetString)sset[0]).GetOctets();
break;
}
}
if (digestAttr == null)
throw new ArgumentException("Authenticated attribute is missing the digest.");
++next;
}
digestEncryptionAlgorithm = ((DerObjectIdentifier)((Asn1Sequence)signerInfo[next++])[0]).Id;
digest = ((DerOctetString)signerInfo[next]).GetOctets();
if (RSAdata != null || digestAttr != null) {
messageDigest = GetHashClass();
}
sig = SignerUtilities.GetSigner(GetDigestAlgorithm());
sig.Init(false, signCert.GetPublicKey());
}
/// <summary>
/// Zertifikat von einer URL herunterladen
/// </summary>
/// <param name="downloadUrl">Die URL von der das Zertifikat heruntergeladen werden soll</param>
/// <returns>Zertifikat (mit zusätzlichen Zertifikaten, damit eine vollständige Zertifikat-Kette erstellt werden kann)</returns>
/// <remarks>
/// Die URL wird von der Funktion <see cref="QueryOrderStatusAsync"/> zurückgeliefert, wenn der <see cref="OstcOrderStatus"/>
/// den Wert <see cref="OstcOrderStatus.Successful"/> hat.
/// </remarks>
public async Task<IReadOnlyList<X509Certificate>> DownloadCertificateAsync(Uri downloadUrl)
{
var request = new RestRequest(downloadUrl);
var response = await Client.Execute(request);
var certData = response.RawBytes;
var parser = new X509CertificateParser();
var certs = parser.ReadCertificates(certData).Cast<X509Certificate>().ToList();
return certs;
}