/** * Replace the signerinformation store associated with the passed * in message contained in the stream original with the new one passed in. * You would probably only want to do this if you wanted to change the unsigned * attributes associated with a signer, or perhaps delete one. * <p> * The output stream is returned unclosed. * </p> * @param original the signed data stream to be used as a base. * @param signerInformationStore the new signer information store to use. * @param out the stream to Write the new signed data object to. * @return out. */ public static Stream ReplaceSigners(Stream original, SignerInformationStore signerInformationStore, Stream outStr) { // NB: SecureRandom would be ignored since using existing signatures only var gen = new CmsSignedDataStreamGenerator(); var parser = new CmsSignedDataParser(original); // gen.AddDigests(parser.DigestOids); gen.AddSigners(signerInformationStore); CmsTypedStream signedContent = parser.GetSignedContent(); bool encapsulate = (signedContent != null); using (Stream contentOut = gen.Open(outStr, parser.SignedContentType.Id, encapsulate)) { if (encapsulate) { Streams.PipeAll(signedContent.ContentStream, contentOut); } gen.AddAttributeCertificates(parser.GetAttributeCertificates("Collection")); gen.AddCertificates(parser.GetCertificates("Collection")); gen.AddCrls(parser.GetCrls("Collection")); // gen.AddSigners(parser.GetSignerInfos()); } return(outStr); }
/** * return the collection of signers that are associated with the * signatures for the message. */ public SignerInformationStore GetSignerInfos() { if (signerInfoStore == null) { IList signerInfos = Platform.CreateArrayList(); Asn1Set s = signedData.SignerInfos; foreach (object obj in s) { SignerInfo info = SignerInfo.GetInstance(obj); DerObjectIdentifier contentType = signedData.EncapContentInfo.ContentType; if (hashes == null) { signerInfos.Add(new SignerInformation(info, contentType, signedContent, null)); } else { byte[] hash = (byte[])hashes[info.DigestAlgorithm.ObjectID.Id]; signerInfos.Add(new SignerInformation(info, contentType, null, new BaseDigestCalculator(hash))); } } signerInfoStore = new SignerInformationStore(signerInfos); } return(signerInfoStore); }
private CmsSignedData( CmsSignedData c) { this.signedData = c.signedData; this.contentInfo = c.contentInfo; this.signedContent = c.signedContent; this.signerInfoStore = c.signerInfoStore; }
private CmsSignedData( CmsSignedData c) { this.signedData = c.signedData; this.contentInfo = c.contentInfo; this.signedContent = c.signedContent; this.signerInfoStore = c.signerInfoStore; }
/** * Add a store of precalculated signers to the generator. * * @param signerStore store of signers */ public void AddSigners( SignerInformationStore signerStore) { foreach (SignerInformation o in signerStore.GetSigners()) { _signers.Add(o); AddSignerCallback(o); } }
/** * Replace the signerinformation store associated with this * CmsSignedData object with the new one passed in. You would * probably only want to do this if you wanted to change the unsigned * attributes associated with a signer, or perhaps delete one. * * @param signedData the signed data object to be used as a base. * @param signerInformationStore the new signer information store to use. * @return a new signed data object. */ public static CmsSignedData ReplaceSigners( CmsSignedData signedData, SignerInformationStore signerInformationStore) { // // copy // CmsSignedData cms = new CmsSignedData(signedData); // // replace the store // cms.signerInfoStore = signerInformationStore; // // replace the signers in the SignedData object // Asn1EncodableVector digestAlgs = new Asn1EncodableVector(); Asn1EncodableVector vec = new Asn1EncodableVector(); foreach (SignerInformation signer in signerInformationStore.GetSigners()) { digestAlgs.Add(Helper.FixAlgID(signer.DigestAlgorithmID)); vec.Add(signer.ToSignerInfo()); } Asn1Set digests = new DerSet(digestAlgs); Asn1Set signers = new DerSet(vec); Asn1Sequence sD = (Asn1Sequence)signedData.signedData.ToAsn1Object(); // // signers are the last item in the sequence. // vec = new Asn1EncodableVector( sD[0], // version digests); for (int i = 2; i != sD.Count - 1; i++) { vec.Add(sD[i]); } vec.Add(signers); cms.signedData = SignedData.GetInstance(new BerSequence(vec)); // // replace the contentInfo with the new one // cms.contentInfo = new ContentInfo(cms.contentInfo.ContentType, cms.signedData); return(cms); }
/** * Return a signer information object with passed in SignerInformationStore representing counter * signatures attached as an unsigned attribute. * * @param signerInformation the signerInfo to be used as the basis. * @param counterSigners signer info objects carrying counter signature. * @return a copy of the original SignerInformationObject with the changed attributes. */ public static SignerInformation AddCounterSigners( SignerInformation signerInformation, SignerInformationStore counterSigners) { // TODO Perform checks from RFC 3852 11.4 SignerInfo sInfo = signerInformation.info; Asn1.Cms.AttributeTable unsignedAttr = signerInformation.UnsignedAttributes; Asn1EncodableVector v; if (unsignedAttr != null) { v = unsignedAttr.ToAsn1EncodableVector(); } else { v = new Asn1EncodableVector(); } Asn1EncodableVector sigs = new Asn1EncodableVector(); foreach (SignerInformation sigInf in counterSigners.GetSigners()) { sigs.Add(sigInf.ToSignerInfo()); } v.Add(new Asn1.Cms.Attribute(CmsAttributes.CounterSignature, new DerSet(sigs))); return(new SignerInformation( new SignerInfo( sInfo.SignerID, sInfo.DigestAlgorithm, sInfo.AuthenticatedAttributes, sInfo.DigestEncryptionAlgorithm, sInfo.EncryptedDigest, new DerSet(v)), signerInformation.contentType, signerInformation.content, null)); }
/** * return the collection of signers that are associated with the * signatures for the message. * @throws CmsException */ public SignerInformationStore GetSignerInfos() { if (_signerInfoStore == null) { PopulateCertCrlSets(); IList signerInfos = Platform.CreateArrayList(); IDictionary hashes = Platform.CreateHashtable(); foreach (object digestKey in _digests.Keys) { hashes[digestKey] = DigestUtilities.DoFinal((IDigest)_digests[digestKey]); } try { Asn1SetParser s = _signedData.GetSignerInfos(); IAsn1Convertible o; while ((o = s.ReadObject()) != null) { SignerInfo info = SignerInfo.GetInstance(o.ToAsn1Object()); string digestName = Helper.GetDigestAlgName(info.DigestAlgorithm.ObjectID.Id); var hash = (byte[])hashes[digestName]; signerInfos.Add(new SignerInformation(info, _signedContentType, null, new BaseDigestCalculator(hash))); } } catch (IOException e) { throw new CmsException("io exception: " + e.Message, e); } _signerInfoStore = new SignerInformationStore(signerInfos); } return(_signerInfoStore); }
/** * Return a signer information object with passed in SignerInformationStore representing counter * signatures attached as an unsigned attribute. * * @param signerInformation the signerInfo to be used as the basis. * @param counterSigners signer info objects carrying counter signature. * @return a copy of the original SignerInformationObject with the changed attributes. */ public static SignerInformation AddCounterSigners( SignerInformation signerInformation, SignerInformationStore counterSigners) { // TODO Perform checks from RFC 3852 11.4 SignerInfo sInfo = signerInformation.info; Asn1.Cms.AttributeTable unsignedAttr = signerInformation.UnsignedAttributes; Asn1EncodableVector v; if (unsignedAttr != null) { v = unsignedAttr.ToAsn1EncodableVector(); } else { v = new Asn1EncodableVector(); } Asn1EncodableVector sigs = new Asn1EncodableVector(); foreach (SignerInformation sigInf in counterSigners.GetSigners()) { sigs.Add(sigInf.ToSignerInfo()); } v.Add(new Asn1.Cms.Attribute(CmsAttributes.CounterSignature, new DerSet(sigs))); return new SignerInformation( new SignerInfo( sInfo.SignerID, sInfo.DigestAlgorithm, sInfo.AuthenticatedAttributes, sInfo.DigestEncryptionAlgorithm, sInfo.EncryptedDigest, new DerSet(v)), signerInformation.contentType, signerInformation.content, null); }
/** * Replace the signerinformation store associated with the passed * in message contained in the stream original with the new one passed in. * You would probably only want to do this if you wanted to change the unsigned * attributes associated with a signer, or perhaps delete one. * <p> * The output stream is returned unclosed. * </p> * @param original the signed data stream to be used as a base. * @param signerInformationStore the new signer information store to use. * @param out the stream to Write the new signed data object to. * @return out. */ public static Stream ReplaceSigners(Stream original, SignerInformationStore signerInformationStore, Stream outStr) { // NB: SecureRandom would be ignored since using existing signatures only var gen = new CmsSignedDataStreamGenerator(); var parser = new CmsSignedDataParser(original); // gen.AddDigests(parser.DigestOids); gen.AddSigners(signerInformationStore); CmsTypedStream signedContent = parser.GetSignedContent(); bool encapsulate = (signedContent != null); using (Stream contentOut = gen.Open(outStr, parser.SignedContentType.Id, encapsulate)) { if (encapsulate) { Streams.PipeAll(signedContent.ContentStream, contentOut); } gen.AddAttributeCertificates(parser.GetAttributeCertificates("Collection")); gen.AddCertificates(parser.GetCertificates("Collection")); gen.AddCrls(parser.GetCrls("Collection")); // gen.AddSigners(parser.GetSignerInfos()); } return outStr; }
/** * return the collection of signers that are associated with the * signatures for the message. * @throws CmsException */ public SignerInformationStore GetSignerInfos() { if (_signerInfoStore == null) { PopulateCertCrlSets(); IList signerInfos = Platform.CreateArrayList(); IDictionary hashes = Platform.CreateHashtable(); foreach (object digestKey in _digests.Keys) { hashes[digestKey] = DigestUtilities.DoFinal((IDigest) _digests[digestKey]); } try { Asn1SetParser s = _signedData.GetSignerInfos(); IAsn1Convertible o; while ((o = s.ReadObject()) != null) { SignerInfo info = SignerInfo.GetInstance(o.ToAsn1Object()); string digestName = Helper.GetDigestAlgName(info.DigestAlgorithm.ObjectID.Id); var hash = (byte[]) hashes[digestName]; signerInfos.Add(new SignerInformation(info, _signedContentType, null, new BaseDigestCalculator(hash))); } } catch (IOException e) { throw new CmsException("io exception: " + e.Message, e); } _signerInfoStore = new SignerInformationStore(signerInfos); } return _signerInfoStore; }
/** * Add a store of precalculated signers to the generator. * * @param signerStore store of signers */ public void AddSigners( SignerInformationStore signerStore) { foreach (SignerInformation o in signerStore.GetSigners()) { _signers.Add(o); AddSignerCallback(o); } }
/** * Replace the signerinformation store associated with this * CmsSignedData object with the new one passed in. You would * probably only want to do this if you wanted to change the unsigned * attributes associated with a signer, or perhaps delete one. * * @param signedData the signed data object to be used as a base. * @param signerInformationStore the new signer information store to use. * @return a new signed data object. */ public static CmsSignedData ReplaceSigners( CmsSignedData signedData, SignerInformationStore signerInformationStore) { // // copy // CmsSignedData cms = new CmsSignedData(signedData); // // replace the store // cms.signerInfoStore = signerInformationStore; // // replace the signers in the SignedData object // Asn1EncodableVector digestAlgs = new Asn1EncodableVector(); Asn1EncodableVector vec = new Asn1EncodableVector(); foreach (SignerInformation signer in signerInformationStore.GetSigners()) { digestAlgs.Add(Helper.FixAlgID(signer.DigestAlgorithmID)); vec.Add(signer.ToSignerInfo()); } Asn1Set digests = new DerSet(digestAlgs); Asn1Set signers = new DerSet(vec); Asn1Sequence sD = (Asn1Sequence)signedData.signedData.ToAsn1Object(); // // signers are the last item in the sequence. // vec = new Asn1EncodableVector( sD[0], // version digests); for (int i = 2; i != sD.Count - 1; i++) { vec.Add(sD[i]); } vec.Add(signers); cms.signedData = SignedData.GetInstance(new BerSequence(vec)); // // replace the contentInfo with the new one // cms.contentInfo = new ContentInfo(cms.contentInfo.ContentType, cms.signedData); return cms; }
/** * return the collection of signers that are associated with the * signatures for the message. */ public SignerInformationStore GetSignerInfos() { if (signerInfoStore == null) { IList signerInfos = Platform.CreateArrayList(); Asn1Set s = signedData.SignerInfos; foreach (object obj in s) { SignerInfo info = SignerInfo.GetInstance(obj); DerObjectIdentifier contentType = signedData.EncapContentInfo.ContentType; if (hashes == null) { signerInfos.Add(new SignerInformation(info, contentType, signedContent, null)); } else { byte[] hash = (byte[]) hashes[info.DigestAlgorithm.ObjectID.Id]; signerInfos.Add(new SignerInformation(info, contentType, null, new BaseDigestCalculator(hash))); } } signerInfoStore = new SignerInformationStore(signerInfos); } return signerInfoStore; }