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using System;
using System.Collections.Generic;
using System.IO;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Cms;
using Org.BouncyCastle.Asn1.Ocsp;
using Org.BouncyCastle.Asn1.Sec;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Asn1.X9;
using Org.BouncyCastle.Utilities.Collections;
using Org.BouncyCastle.Utilities.IO;
using Org.BouncyCastle.X509;
namespace Org.BouncyCastle.Cms
{
internal static class CmsUtilities
{
// TODO Is there a .NET equivalent to this?
// private static readonly Runtime RUNTIME = Runtime.getRuntime();
internal static int MaximumMemory
{
get
{
// TODO Is there a .NET equivalent to this?
long maxMem = int.MaxValue;//RUNTIME.maxMemory();
if (maxMem > int.MaxValue)
{
return int.MaxValue;
}
return (int)maxMem;
}
}
internal static ContentInfo ReadContentInfo(byte[] input)
{
using (var asn1In = new Asn1InputStream(input))
{
return ReadContentInfo(asn1In);
}
}
internal static ContentInfo ReadContentInfo(Stream input)
{
using (var asn1In = new Asn1InputStream(input, MaximumMemory, leaveOpen: true))
{
return ReadContentInfo(asn1In);
}
}
private static ContentInfo ReadContentInfo(Asn1InputStream asn1In)
{
try
{
return ContentInfo.GetInstance(asn1In.ReadObject());
}
catch (IOException e)
{
throw new CmsException("IOException reading content.", e);
}
catch (InvalidCastException e)
{
throw new CmsException("Malformed content.", e);
}
catch (ArgumentException e)
{
throw new CmsException("Malformed content.", e);
}
}
internal static byte[] StreamToByteArray(Stream inStream) => Streams.ReadAll(inStream);
internal static byte[] StreamToByteArray(Stream inStream, int limit) => Streams.ReadAllLimited(inStream, limit);
internal static List<Asn1TaggedObject> GetAttributeCertificatesFromStore(
IStore<X509V2AttributeCertificate> attrCertStore)
{
var result = new List<Asn1TaggedObject>();
if (attrCertStore != null)
{
foreach (var attrCert in attrCertStore.EnumerateMatches(null))
{
result.Add(new DerTaggedObject(false, 2, attrCert.AttributeCertificate));
}
}
return result;
}
internal static List<X509CertificateStructure> GetCertificatesFromStore(IStore<X509Certificate> certStore)
{
var result = new List<X509CertificateStructure>();
if (certStore != null)
{
foreach (var cert in certStore.EnumerateMatches(null))
{
result.Add(cert.CertificateStructure);
}
}
return result;
}
internal static List<CertificateList> GetCrlsFromStore(IStore<X509Crl> crlStore)
{
var result = new List<CertificateList>();
if (crlStore != null)
{
foreach (var crl in crlStore.EnumerateMatches(null))
{
result.Add(crl.CertificateList);
}
}
return result;
}
internal static List<Asn1TaggedObject> GetOtherRevocationInfosFromStore(
IStore<OtherRevocationInfoFormat> otherRevocationInfoStore)
{
var result = new List<Asn1TaggedObject>();
if (otherRevocationInfoStore != null)
{
foreach (var otherRevocationInfo in otherRevocationInfoStore.EnumerateMatches(null))
{
ValidateOtherRevocationInfo(otherRevocationInfo);
result.Add(new DerTaggedObject(false, 1, otherRevocationInfo));
}
}
return result;
}
internal static List<DerTaggedObject> GetOtherRevocationInfosFromStore(IStore<Asn1Encodable> otherRevInfoStore,
DerObjectIdentifier otherRevInfoFormat)
{
var result = new List<DerTaggedObject>();
if (otherRevInfoStore != null && otherRevInfoFormat != null)
{
foreach (var otherRevInfo in otherRevInfoStore.EnumerateMatches(null))
{
var otherRevocationInfo = new OtherRevocationInfoFormat(otherRevInfoFormat, otherRevInfo);
ValidateOtherRevocationInfo(otherRevocationInfo);
result.Add(new DerTaggedObject(false, 1, otherRevocationInfo));
}
}
return result;
}
// TODO Clean up this method (which is not present in bc-java)
internal static void AddDigestAlgs(Asn1EncodableVector digestAlgs, SignerInformation signer,
DefaultDigestAlgorithmIdentifierFinder dgstAlgFinder)
{
var helper = CmsSignedHelper.Instance;
digestAlgs.Add(helper.FixDigestAlgID(signer.DigestAlgorithmID, dgstAlgFinder));
SignerInformationStore counterSignaturesStore = signer.GetCounterSignatures();
foreach (var counterSigner in counterSignaturesStore)
{
digestAlgs.Add(helper.FixDigestAlgID(counterSigner.DigestAlgorithmID, dgstAlgFinder));
}
}
internal static void AddDigestAlgs(ISet<AlgorithmIdentifier> digestAlgs, SignerInformation signer,
DefaultDigestAlgorithmIdentifierFinder dgstAlgFinder)
{
var helper = CmsSignedHelper.Instance;
digestAlgs.Add(helper.FixDigestAlgID(signer.DigestAlgorithmID, dgstAlgFinder));
SignerInformationStore counterSignaturesStore = signer.GetCounterSignatures();
foreach (var counterSigner in counterSignaturesStore)
{
digestAlgs.Add(helper.FixDigestAlgID(counterSigner.DigestAlgorithmID, dgstAlgFinder));
}
}
internal static Asn1Set ConvertToDLSet(ISet<AlgorithmIdentifier> digestAlgs)
{
Asn1EncodableVector v = new Asn1EncodableVector(digestAlgs.Count);
foreach (var digestAlg in digestAlgs)
{
v.Add(digestAlg);
}
return DLSet.FromVector(v);
}
internal static Asn1Set CreateBerSetFromList(IEnumerable<Asn1Encodable> elements)
{
Asn1EncodableVector v = new Asn1EncodableVector();
foreach (Asn1Encodable element in elements)
{
v.Add(element);
}
return BerSet.FromVector(v);
}
internal static Asn1Set CreateDerSetFromList(IEnumerable<Asn1Encodable> elements)
{
Asn1EncodableVector v = new Asn1EncodableVector();
foreach (Asn1Encodable element in elements)
{
v.Add(element);
}
return DerSet.FromVector(v);
}
internal static TbsCertificateStructure GetTbsCertificateStructure(X509Certificate cert) =>
cert.CertificateStructure.TbsCertificate;
internal static IssuerAndSerialNumber GetIssuerAndSerialNumber(X509Certificate cert)
{
TbsCertificateStructure tbsCert = GetTbsCertificateStructure(cert);
return new IssuerAndSerialNumber(tbsCert.Issuer, tbsCert.SerialNumber);
}
internal static Asn1.Cms.AttributeTable ParseAttributeTable(Asn1SetParser parser)
{
Asn1EncodableVector v = new Asn1EncodableVector();
IAsn1Convertible o;
while ((o = parser.ReadObject()) != null)
{
Asn1SequenceParser seq = (Asn1SequenceParser)o;
v.Add(seq.ToAsn1Object());
}
return new Asn1.Cms.AttributeTable(DerSet.FromVector(v));
}
internal static void ValidateOtherRevocationInfo(OtherRevocationInfoFormat otherRevocationInfo)
{
if (CmsObjectIdentifiers.id_ri_ocsp_response.Equals(otherRevocationInfo.InfoFormat))
{
OcspResponse ocspResponse = OcspResponse.GetInstance(otherRevocationInfo.Info);
if (OcspResponseStatus.Successful != ocspResponse.ResponseStatus.IntValueExact)
throw new ArgumentException("cannot add unsuccessful OCSP response to CMS SignedData");
}
}
internal static bool IsMqv(DerObjectIdentifier oid) =>
X9ObjectIdentifiers.MqvSinglePassSha1KdfScheme.Equals(oid) ||
SecObjectIdentifiers.mqvSinglePass_sha224kdf_scheme.Equals(oid) ||
SecObjectIdentifiers.mqvSinglePass_sha256kdf_scheme.Equals(oid) ||
SecObjectIdentifiers.mqvSinglePass_sha384kdf_scheme.Equals(oid) ||
SecObjectIdentifiers.mqvSinglePass_sha512kdf_scheme.Equals(oid);
}
}
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