X509Utilities
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.CryptoPro;
using Org.BouncyCastle.Asn1.Nist;
using Org.BouncyCastle.Asn1.Oiw;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.TeleTrust;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Asn1.X9;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Operators;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.Collections;
using System;
using System.Collections.Generic;
using System.IO;
namespace Org.BouncyCastle.X509
{
internal static class X509Utilities
{
private static readonly Dictionary<string, DerObjectIdentifier> m_algorithms;
private static readonly Dictionary<string, Asn1Encodable> m_exParams;
private static readonly HashSet<DerObjectIdentifier> m_noParams;
static X509Utilities()
{
m_algorithms = new Dictionary<string, DerObjectIdentifier>(StringComparer.OrdinalIgnoreCase);
m_exParams = new Dictionary<string, Asn1Encodable>(StringComparer.OrdinalIgnoreCase);
m_noParams = new HashSet<DerObjectIdentifier>();
m_algorithms.Add("MD2WITHRSAENCRYPTION", PkcsObjectIdentifiers.MD2WithRsaEncryption);
m_algorithms.Add("MD2WITHRSA", PkcsObjectIdentifiers.MD2WithRsaEncryption);
m_algorithms.Add("MD5WITHRSAENCRYPTION", PkcsObjectIdentifiers.MD5WithRsaEncryption);
m_algorithms.Add("MD5WITHRSA", PkcsObjectIdentifiers.MD5WithRsaEncryption);
m_algorithms.Add("SHA1WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha1WithRsaEncryption);
m_algorithms.Add("SHA-1WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha1WithRsaEncryption);
m_algorithms.Add("SHA1WITHRSA", PkcsObjectIdentifiers.Sha1WithRsaEncryption);
m_algorithms.Add("SHA-1WITHRSA", PkcsObjectIdentifiers.Sha1WithRsaEncryption);
m_algorithms.Add("SHA224WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha224WithRsaEncryption);
m_algorithms.Add("SHA-224WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha224WithRsaEncryption);
m_algorithms.Add("SHA224WITHRSA", PkcsObjectIdentifiers.Sha224WithRsaEncryption);
m_algorithms.Add("SHA-224WITHRSA", PkcsObjectIdentifiers.Sha224WithRsaEncryption);
m_algorithms.Add("SHA256WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha256WithRsaEncryption);
m_algorithms.Add("SHA-256WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha256WithRsaEncryption);
m_algorithms.Add("SHA256WITHRSA", PkcsObjectIdentifiers.Sha256WithRsaEncryption);
m_algorithms.Add("SHA-256WITHRSA", PkcsObjectIdentifiers.Sha256WithRsaEncryption);
m_algorithms.Add("SHA384WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha384WithRsaEncryption);
m_algorithms.Add("SHA-384WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha384WithRsaEncryption);
m_algorithms.Add("SHA384WITHRSA", PkcsObjectIdentifiers.Sha384WithRsaEncryption);
m_algorithms.Add("SHA-384WITHRSA", PkcsObjectIdentifiers.Sha384WithRsaEncryption);
m_algorithms.Add("SHA512WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha512WithRsaEncryption);
m_algorithms.Add("SHA-512WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha512WithRsaEncryption);
m_algorithms.Add("SHA512WITHRSA", PkcsObjectIdentifiers.Sha512WithRsaEncryption);
m_algorithms.Add("SHA-512WITHRSA", PkcsObjectIdentifiers.Sha512WithRsaEncryption);
m_algorithms.Add("SHA512(224)WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha512_224WithRSAEncryption);
m_algorithms.Add("SHA-512(224)WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha512_224WithRSAEncryption);
m_algorithms.Add("SHA512(224)WITHRSA", PkcsObjectIdentifiers.Sha512_224WithRSAEncryption);
m_algorithms.Add("SHA-512(224)WITHRSA", PkcsObjectIdentifiers.Sha512_224WithRSAEncryption);
m_algorithms.Add("SHA512(256)WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha512_256WithRSAEncryption);
m_algorithms.Add("SHA-512(256)WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha512_256WithRSAEncryption);
m_algorithms.Add("SHA512(256)WITHRSA", PkcsObjectIdentifiers.Sha512_256WithRSAEncryption);
m_algorithms.Add("SHA-512(256)WITHRSA", PkcsObjectIdentifiers.Sha512_256WithRSAEncryption);
m_algorithms.Add("SHA1WITHRSAANDMGF1", PkcsObjectIdentifiers.IdRsassaPss);
m_algorithms.Add("SHA224WITHRSAANDMGF1", PkcsObjectIdentifiers.IdRsassaPss);
m_algorithms.Add("SHA256WITHRSAANDMGF1", PkcsObjectIdentifiers.IdRsassaPss);
m_algorithms.Add("SHA384WITHRSAANDMGF1", PkcsObjectIdentifiers.IdRsassaPss);
m_algorithms.Add("SHA512WITHRSAANDMGF1", PkcsObjectIdentifiers.IdRsassaPss);
m_algorithms.Add("RIPEMD160WITHRSAENCRYPTION", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD160);
m_algorithms.Add("RIPEMD160WITHRSA", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD160);
m_algorithms.Add("RIPEMD128WITHRSAENCRYPTION", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD128);
m_algorithms.Add("RIPEMD128WITHRSA", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD128);
m_algorithms.Add("RIPEMD256WITHRSAENCRYPTION", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD256);
m_algorithms.Add("RIPEMD256WITHRSA", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD256);
m_algorithms.Add("SHA1WITHDSA", X9ObjectIdentifiers.IdDsaWithSha1);
m_algorithms.Add("DSAWITHSHA1", X9ObjectIdentifiers.IdDsaWithSha1);
m_algorithms.Add("SHA224WITHDSA", NistObjectIdentifiers.DsaWithSha224);
m_algorithms.Add("SHA256WITHDSA", NistObjectIdentifiers.DsaWithSha256);
m_algorithms.Add("SHA384WITHDSA", NistObjectIdentifiers.DsaWithSha384);
m_algorithms.Add("SHA512WITHDSA", NistObjectIdentifiers.DsaWithSha512);
m_algorithms.Add("SHA1WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha1);
m_algorithms.Add("ECDSAWITHSHA1", X9ObjectIdentifiers.ECDsaWithSha1);
m_algorithms.Add("SHA224WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha224);
m_algorithms.Add("SHA256WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha256);
m_algorithms.Add("SHA384WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha384);
m_algorithms.Add("SHA512WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha512);
m_algorithms.Add("GOST3411WITHGOST3410", CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x94);
m_algorithms.Add("GOST3411WITHGOST3410-94", CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x94);
m_algorithms.Add("GOST3411WITHECGOST3410", CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x2001);
m_algorithms.Add("GOST3411WITHECGOST3410-2001", CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x2001);
m_algorithms.Add("GOST3411WITHGOST3410-2001", CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x2001);
m_noParams.Add(X9ObjectIdentifiers.ECDsaWithSha1);
m_noParams.Add(X9ObjectIdentifiers.ECDsaWithSha224);
m_noParams.Add(X9ObjectIdentifiers.ECDsaWithSha256);
m_noParams.Add(X9ObjectIdentifiers.ECDsaWithSha384);
m_noParams.Add(X9ObjectIdentifiers.ECDsaWithSha512);
m_noParams.Add(X9ObjectIdentifiers.IdDsaWithSha1);
m_noParams.Add(OiwObjectIdentifiers.DsaWithSha1);
m_noParams.Add(NistObjectIdentifiers.DsaWithSha224);
m_noParams.Add(NistObjectIdentifiers.DsaWithSha256);
m_noParams.Add(NistObjectIdentifiers.DsaWithSha384);
m_noParams.Add(NistObjectIdentifiers.DsaWithSha512);
m_noParams.Add(CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x94);
m_noParams.Add(CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x2001);
AlgorithmIdentifier hashAlgId = new AlgorithmIdentifier(OiwObjectIdentifiers.IdSha1, DerNull.Instance);
m_exParams.Add("SHA1WITHRSAANDMGF1", CreatePssParams(hashAlgId, 20));
AlgorithmIdentifier hashAlgId2 = new AlgorithmIdentifier(NistObjectIdentifiers.IdSha224, DerNull.Instance);
m_exParams.Add("SHA224WITHRSAANDMGF1", CreatePssParams(hashAlgId2, 28));
AlgorithmIdentifier hashAlgId3 = new AlgorithmIdentifier(NistObjectIdentifiers.IdSha256, DerNull.Instance);
m_exParams.Add("SHA256WITHRSAANDMGF1", CreatePssParams(hashAlgId3, 32));
AlgorithmIdentifier hashAlgId4 = new AlgorithmIdentifier(NistObjectIdentifiers.IdSha384, DerNull.Instance);
m_exParams.Add("SHA384WITHRSAANDMGF1", CreatePssParams(hashAlgId4, 48));
AlgorithmIdentifier hashAlgId5 = new AlgorithmIdentifier(NistObjectIdentifiers.IdSha512, DerNull.Instance);
m_exParams.Add("SHA512WITHRSAANDMGF1", CreatePssParams(hashAlgId5, 64));
}
internal static byte[] CalculateDigest(AlgorithmIdentifier digestAlgorithm, Asn1Encodable asn1Encodable)
{
return CalculateResult(new DefaultDigestCalculator(DigestUtilities.GetDigest(digestAlgorithm.Algorithm)), asn1Encodable).Collect();
}
internal static byte[] CalculateDigest(IDigestFactory digestFactory, byte[] buf, int off, int len)
{
return CalculateResult(digestFactory.CreateCalculator(), buf, off, len).Collect();
}
internal static byte[] CalculateDigest(IDigestFactory digestFactory, ReadOnlySpan<byte> buf)
{
return CalculateResult(digestFactory.CreateCalculator(), buf).Collect();
}
internal static byte[] CalculateDigest(IDigestFactory digestFactory, Asn1Encodable asn1Encodable)
{
return CalculateResult(digestFactory.CreateCalculator(), asn1Encodable).Collect();
}
internal static TResult CalculateResult<TResult>(IStreamCalculator<TResult> streamCalculator, byte[] buf, int off, int len)
{
using (Stream stream = streamCalculator.Stream)
stream.Write(buf, off, len);
return streamCalculator.GetResult();
}
internal static TResult CalculateResult<TResult>(IStreamCalculator<TResult> streamCalculator, ReadOnlySpan<byte> buf)
{
using (Stream stream = streamCalculator.Stream)
stream.Write(buf);
return streamCalculator.GetResult();
}
internal static TResult CalculateResult<TResult>(IStreamCalculator<TResult> streamCalculator, Asn1Encodable asn1Encodable)
{
using (Stream output = streamCalculator.Stream)
asn1Encodable.EncodeTo(output, "DER");
return streamCalculator.GetResult();
}
private static RsassaPssParameters CreatePssParams(AlgorithmIdentifier hashAlgId, int saltSize)
{
return new RsassaPssParameters(hashAlgId, new AlgorithmIdentifier(PkcsObjectIdentifiers.IdMgf1, hashAlgId), new DerInteger(saltSize), new DerInteger(1));
}
internal unsafe static DerBitString CollectDerBitString(IBlockResult result)
{
int maxResultLength = result.GetMaxResultLength();
Span<byte> span;
if (maxResultLength <= 512) {
int num = maxResultLength;
span = new Span<byte>(stackalloc byte[(int)(uint)num], num);
} else
span = new byte[maxResultLength];
Span<byte> span2 = span;
int length = result.Collect(span2);
span2 = span2.Slice(0, length);
return new DerBitString(span2);
}
internal static DerObjectIdentifier GetAlgorithmOid(string algorithmName)
{
if (m_algorithms.TryGetValue(algorithmName, out DerObjectIdentifier value))
return value;
return new DerObjectIdentifier(algorithmName);
}
internal static AlgorithmIdentifier GetSigAlgID(DerObjectIdentifier sigOid, string algorithmName)
{
if (m_noParams.Contains(sigOid))
return new AlgorithmIdentifier(sigOid);
if (m_exParams.TryGetValue(algorithmName, out Asn1Encodable value))
return new AlgorithmIdentifier(sigOid, value);
return new AlgorithmIdentifier(sigOid, DerNull.Instance);
}
internal static IEnumerable<string> GetAlgNames()
{
return CollectionUtilities.Proxy(m_algorithms.Keys);
}
internal static DerBitString GenerateBitString(IStreamCalculator<IBlockResult> streamCalculator, Asn1Encodable asn1Encodable)
{
return CollectDerBitString(CalculateResult(streamCalculator, asn1Encodable));
}
internal static DerBitString GenerateDigest(IDigestFactory digestFactory, Asn1Encodable asn1Encodable)
{
return GenerateBitString(digestFactory.CreateCalculator(), asn1Encodable);
}
internal static DerBitString GenerateMac(IMacFactory macFactory, Asn1Encodable asn1Encodable)
{
return GenerateBitString(macFactory.CreateCalculator(), asn1Encodable);
}
internal static DerBitString GenerateSignature(ISignatureFactory signatureFactory, Asn1Encodable asn1Encodable)
{
return GenerateBitString(signatureFactory.CreateCalculator(), asn1Encodable);
}
internal static bool VerifyMac(IMacFactory macFactory, Asn1Encodable asn1Encodable, DerBitString expected)
{
return Arrays.FixedTimeEquals(CalculateResult(macFactory.CreateCalculator(), asn1Encodable).Collect(), expected.GetOctets());
}
internal static bool VerifySignature(IVerifierFactory verifierFactory, Asn1Encodable asn1Encodable, DerBitString signature)
{
return CalculateResult(verifierFactory.CreateCalculator(), asn1Encodable).IsVerified(signature.GetOctets());
}
internal static Asn1TaggedObject TrimExtensions(int tagNo, X509Extensions exts)
{
Asn1Sequence instance = Asn1Sequence.GetInstance(exts.ToAsn1Object());
Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector();
foreach (Asn1Encodable item in instance) {
Asn1Sequence instance2 = Asn1Sequence.GetInstance(item);
if (!X509Extensions.AltSignatureValue.Equals(instance2[0]))
asn1EncodableVector.Add(instance2);
}
return new DerTaggedObject(true, tagNo, new DerSequence(asn1EncodableVector));
}
}
}