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-rw-r--r--crypto/src/ocsp/OCSPUtil.cs133
1 files changed, 133 insertions, 0 deletions
diff --git a/crypto/src/ocsp/OCSPUtil.cs b/crypto/src/ocsp/OCSPUtil.cs
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+++ b/crypto/src/ocsp/OCSPUtil.cs
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+using System;
+using System.Collections;
+using System.Globalization;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Asn1.CryptoPro;
+using Org.BouncyCastle.Asn1.Nist;
+using Org.BouncyCastle.Asn1.Pkcs;
+using Org.BouncyCastle.Asn1.TeleTrust;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Asn1.X9;
+using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Collections;
+
+namespace Org.BouncyCastle.Ocsp
+{
+	class OcspUtilities
+	{
+		private static readonly IDictionary algorithms = Platform.CreateHashtable();
+        private static readonly IDictionary oids = Platform.CreateHashtable();
+		private static readonly ISet noParams = new HashSet();
+
+		static OcspUtilities()
+		{
+			algorithms.Add("MD2WITHRSAENCRYPTION", PkcsObjectIdentifiers.MD2WithRsaEncryption);
+			algorithms.Add("MD2WITHRSA", PkcsObjectIdentifiers.MD2WithRsaEncryption);
+			algorithms.Add("MD5WITHRSAENCRYPTION", PkcsObjectIdentifiers.MD5WithRsaEncryption);
+			algorithms.Add("MD5WITHRSA", PkcsObjectIdentifiers.MD5WithRsaEncryption);
+			algorithms.Add("SHA1WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha1WithRsaEncryption);
+			algorithms.Add("SHA1WITHRSA", PkcsObjectIdentifiers.Sha1WithRsaEncryption);
+			algorithms.Add("SHA224WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha224WithRsaEncryption);
+			algorithms.Add("SHA224WITHRSA", PkcsObjectIdentifiers.Sha224WithRsaEncryption);
+			algorithms.Add("SHA256WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha256WithRsaEncryption);
+			algorithms.Add("SHA256WITHRSA", PkcsObjectIdentifiers.Sha256WithRsaEncryption);
+			algorithms.Add("SHA384WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha384WithRsaEncryption);
+			algorithms.Add("SHA384WITHRSA", PkcsObjectIdentifiers.Sha384WithRsaEncryption);
+			algorithms.Add("SHA512WITHRSAENCRYPTION", PkcsObjectIdentifiers.Sha512WithRsaEncryption);
+			algorithms.Add("SHA512WITHRSA", PkcsObjectIdentifiers.Sha512WithRsaEncryption);
+			algorithms.Add("RIPEMD160WITHRSAENCRYPTION", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD160);
+			algorithms.Add("RIPEMD160WITHRSA", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD160);
+			algorithms.Add("RIPEMD128WITHRSAENCRYPTION", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD128);
+			algorithms.Add("RIPEMD128WITHRSA", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD128);
+			algorithms.Add("RIPEMD256WITHRSAENCRYPTION", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD256);
+			algorithms.Add("RIPEMD256WITHRSA", TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD256);
+			algorithms.Add("SHA1WITHDSA", X9ObjectIdentifiers.IdDsaWithSha1);
+			algorithms.Add("DSAWITHSHA1", X9ObjectIdentifiers.IdDsaWithSha1);
+			algorithms.Add("SHA224WITHDSA", NistObjectIdentifiers.DsaWithSha224);
+			algorithms.Add("SHA256WITHDSA", NistObjectIdentifiers.DsaWithSha256);
+			algorithms.Add("SHA1WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha1);
+			algorithms.Add("ECDSAWITHSHA1", X9ObjectIdentifiers.ECDsaWithSha1);
+			algorithms.Add("SHA224WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha224);
+			algorithms.Add("SHA256WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha256);
+			algorithms.Add("SHA384WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha384);
+			algorithms.Add("SHA512WITHECDSA", X9ObjectIdentifiers.ECDsaWithSha512);
+			algorithms.Add("GOST3411WITHGOST3410", CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x94);
+			algorithms.Add("GOST3411WITHGOST3410-94", CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x94);
+
+			oids.Add(PkcsObjectIdentifiers.MD2WithRsaEncryption, "MD2WITHRSA");
+			oids.Add(PkcsObjectIdentifiers.MD5WithRsaEncryption, "MD5WITHRSA");
+			oids.Add(PkcsObjectIdentifiers.Sha1WithRsaEncryption, "SHA1WITHRSA");
+			oids.Add(PkcsObjectIdentifiers.Sha224WithRsaEncryption, "SHA224WITHRSA");
+			oids.Add(PkcsObjectIdentifiers.Sha256WithRsaEncryption, "SHA256WITHRSA");
+			oids.Add(PkcsObjectIdentifiers.Sha384WithRsaEncryption, "SHA384WITHRSA");
+			oids.Add(PkcsObjectIdentifiers.Sha512WithRsaEncryption, "SHA512WITHRSA");
+			oids.Add(TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD160, "RIPEMD160WITHRSA");
+			oids.Add(TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD128, "RIPEMD128WITHRSA");
+			oids.Add(TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD256, "RIPEMD256WITHRSA");
+			oids.Add(X9ObjectIdentifiers.IdDsaWithSha1, "SHA1WITHDSA");
+			oids.Add(NistObjectIdentifiers.DsaWithSha224, "SHA224WITHDSA");
+			oids.Add(NistObjectIdentifiers.DsaWithSha256, "SHA256WITHDSA");
+			oids.Add(X9ObjectIdentifiers.ECDsaWithSha1, "SHA1WITHECDSA");
+			oids.Add(X9ObjectIdentifiers.ECDsaWithSha224, "SHA224WITHECDSA");
+			oids.Add(X9ObjectIdentifiers.ECDsaWithSha256, "SHA256WITHECDSA");
+			oids.Add(X9ObjectIdentifiers.ECDsaWithSha384, "SHA384WITHECDSA");
+			oids.Add(X9ObjectIdentifiers.ECDsaWithSha512, "SHA512WITHECDSA");
+			oids.Add(CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x94, "GOST3411WITHGOST3410");
+
+			//
+			// According to RFC 3279, the ASN.1 encoding SHALL (id-dsa-with-sha1) or MUST (ecdsa-with-SHA*) omit the parameters field.
+			// The parameters field SHALL be NULL for RSA based signature algorithms.
+			//
+			noParams.Add(X9ObjectIdentifiers.ECDsaWithSha1);
+			noParams.Add(X9ObjectIdentifiers.ECDsaWithSha224);
+			noParams.Add(X9ObjectIdentifiers.ECDsaWithSha256);
+			noParams.Add(X9ObjectIdentifiers.ECDsaWithSha384);
+			noParams.Add(X9ObjectIdentifiers.ECDsaWithSha512);
+			noParams.Add(X9ObjectIdentifiers.IdDsaWithSha1);
+			noParams.Add(NistObjectIdentifiers.DsaWithSha224);
+			noParams.Add(NistObjectIdentifiers.DsaWithSha256);
+		}
+
+		internal static DerObjectIdentifier GetAlgorithmOid(
+			string algorithmName)
+		{
+			algorithmName = algorithmName.ToUpperInvariant();
+
+			if (algorithms.Contains(algorithmName))
+			{
+				return (DerObjectIdentifier)algorithms[algorithmName];
+			}
+
+			return new DerObjectIdentifier(algorithmName);
+		}
+
+
+		internal static string GetAlgorithmName(
+			DerObjectIdentifier oid)
+		{
+			if (oids.Contains(oid))
+			{
+				return (string)oids[oid];
+			}
+
+			return oid.Id;
+		}
+
+		internal static AlgorithmIdentifier GetSigAlgID(
+			DerObjectIdentifier sigOid)
+		{
+			if (noParams.Contains(sigOid))
+			{
+				return new AlgorithmIdentifier(sigOid);
+			}
+
+			return new AlgorithmIdentifier(sigOid, DerNull.Instance);
+		}
+
+		internal static IEnumerable AlgNames
+		{
+			get { return new EnumerableProxy(algorithms.Keys); }
+		}
+	}
+}