C# X509.AlgorithmIdentifier类代码示例

//        private new AlgorithmIdentifier   _encAlg;

		public KeyTransRecipientInformation(
            KeyTransRecipientInfo	info,
            AlgorithmIdentifier		encAlg,
            Stream					data)
            : base(encAlg, AlgorithmIdentifier.GetInstance(info.KeyEncryptionAlgorithm), data)
        {
            this._info = info;
//            this._encAlg = encAlg;
            this._rid = new RecipientID();

			RecipientIdentifier r = info.RecipientIdentifier;

			try
            {
                if (r.IsTagged)
                {
                    Asn1OctetString octs = Asn1OctetString.GetInstance(r.ID);

					_rid.SubjectKeyIdentifier = octs.GetOctets();
                }
                else
                {
                    IssuerAndSerialNumber iAnds = IssuerAndSerialNumber.GetInstance(r.ID);

					_rid.Issuer = iAnds.Name;
                    _rid.SerialNumber = iAnds.SerialNumber.Value;
                }
            }
            catch (IOException)
            {
                throw new ArgumentException("invalid rid in KeyTransRecipientInformation");
            }
        }

 /**
  * Creates a new PKMACValue.
  * @param aid CMPObjectIdentifiers.passwordBasedMAC, with PBMParameter
  * @param value MAC of the DER-encoded SubjectPublicKeyInfo
  */
 public PKMacValue(
     AlgorithmIdentifier algID,
     DerBitString        macValue)
 {
     this.algID = algID;
     this.macValue = macValue;
 }

		internal RecipientInformation(
			AlgorithmIdentifier	keyEncAlg,
			CmsSecureReadable	secureReadable)
		{
			this.keyEncAlg = keyEncAlg;
			this.secureReadable = secureReadable;
		}

		public SubjectPublicKeyInfo(
            AlgorithmIdentifier	algID,
            byte[]				publicKey)
        {
            this.keyData = new DerBitString(publicKey);
            this.algID = algID;
        }

		public AuthenticatedData(
			OriginatorInfo		originatorInfo,
			Asn1Set				recipientInfos,
			AlgorithmIdentifier	macAlgorithm,
			AlgorithmIdentifier	digestAlgorithm,
			ContentInfo			encapsulatedContent,
			Asn1Set				authAttrs,
			Asn1OctetString		mac,
			Asn1Set				unauthAttrs)
		{
			if (digestAlgorithm != null || authAttrs != null)
			{
				if (digestAlgorithm == null || authAttrs == null)
				{
					throw new ArgumentException("digestAlgorithm and authAttrs must be set together");
				}
			}

			version = new DerInteger(CalculateVersion(originatorInfo));

			this.originatorInfo = originatorInfo;
			this.macAlgorithm = macAlgorithm;
			this.digestAlgorithm = digestAlgorithm;
			this.recipientInfos = recipientInfos;
			this.encapsulatedContentInfo = encapsulatedContent;
			this.authAttrs = authAttrs;
			this.mac = mac;
			this.unauthAttrs = unauthAttrs;
		}

		public RsaesOaepParameters(
			Asn1Sequence seq)
		{
			hashAlgorithm = DefaultHashAlgorithm;
			maskGenAlgorithm = DefaultMaskGenFunction;
			pSourceAlgorithm = DefaultPSourceAlgorithm;

			for (int i = 0; i != seq.Count; i++)
			{
				Asn1TaggedObject o = (Asn1TaggedObject)seq[i];

				switch (o.TagNo)
				{
					case 0:
						hashAlgorithm = AlgorithmIdentifier.GetInstance(o, true);
						break;
					case 1:
						maskGenAlgorithm = AlgorithmIdentifier.GetInstance(o, true);
						break;
					case 2:
						pSourceAlgorithm = AlgorithmIdentifier.GetInstance(o, true);
						break;
					default:
						throw new ArgumentException("unknown tag");
				}
			}
		}

        public RsassaPssParameters(
			Asn1Sequence seq)
        {
            hashAlgorithm = DefaultHashAlgorithm;
            maskGenAlgorithm = DefaultMaskGenFunction;
            saltLength = DefaultSaltLength;
            trailerField = DefaultTrailerField;

            for (int i = 0; i != seq.Count; i++)
            {
                Asn1TaggedObject o = (Asn1TaggedObject)seq[i];

                switch (o.TagNo)
                {
                    case 0:
                        hashAlgorithm = AlgorithmIdentifier.GetInstance(o, true);
                        break;
                    case 1:
                        maskGenAlgorithm = AlgorithmIdentifier.GetInstance(o, true);
                        break;
                    case 2:
                        saltLength = DerInteger.GetInstance(o, true);
                        break;
                    case 3:
                        trailerField = DerInteger.GetInstance(o, true);
                        break;
                    default:
                        throw new ArgumentException("unknown tag");
                }
            }
        }

		public TimeStampRequest Generate(
			string		digestAlgorithmOid,
			byte[]		digest,
			BigInteger	nonce)
		{
			if (digestAlgorithmOid == null)
			{
				throw new ArgumentException("No digest algorithm specified");
			}

			DerObjectIdentifier digestAlgOid = new DerObjectIdentifier(digestAlgorithmOid);

			AlgorithmIdentifier algID = new AlgorithmIdentifier(digestAlgOid, DerNull.Instance);
			MessageImprint messageImprint = new MessageImprint(algID, digest);

			X509Extensions  ext = null;

			if (extOrdering.Count != 0)
			{
				ext = new X509Extensions(extOrdering, extensions);
			}

			DerInteger derNonce = nonce == null
				?	null
				:	new DerInteger(nonce);

			return new TimeStampRequest(
				new TimeStampReq(messageImprint, reqPolicy, derNonce, certReq, ext));
		}

		private EssCertIDv2(
			Asn1Sequence seq)
		{
			if (seq.Count != 2 && seq.Count != 3)
				throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");

			int count = 0;

			if (seq[0] is Asn1OctetString)
			{
				// Default value
				this.hashAlgorithm = DefaultAlgID;
			}
			else
			{
				this.hashAlgorithm = AlgorithmIdentifier.GetInstance(seq[count++].ToAsn1Object());
			}

			this.certHash = Asn1OctetString.GetInstance(seq[count++].ToAsn1Object()).GetOctets();

			if (seq.Count > count)
			{
				this.issuerSerial = IssuerSerial.GetInstance(
					Asn1Sequence.GetInstance(seq[count].ToAsn1Object()));
			}
		}

        private PrivateKeyInfo(
            Asn1Sequence seq)
        {
            IEnumerator e = seq.GetEnumerator();

            e.MoveNext();
            IBigInteger version = ((DerInteger) e.Current).Value;
            if (version.IntValue != 0)
            {
                throw new ArgumentException("wrong version for private key info");
            }

            e.MoveNext();
            algID = AlgorithmIdentifier.GetInstance(e.Current);

            try
            {
                e.MoveNext();
                Asn1OctetString data = (Asn1OctetString) e.Current;

                privKey = Asn1Object.FromByteArray(data.GetOctets());
            }
            catch (IOException)
            {
                throw new ArgumentException("Error recoverying private key from sequence");
            }

            if (e.MoveNext())
            {
                attributes = Asn1Set.GetInstance((Asn1TaggedObject) e.Current, false);
            }
        }

		private LdsSecurityObject(
			Asn1Sequence seq)
		{
			if (seq == null || seq.Count == 0)
				throw new ArgumentException("null or empty sequence passed.");

			IEnumerator e = seq.GetEnumerator();

			// version
			e.MoveNext();
			version = DerInteger.GetInstance(e.Current);
			// digestAlgorithmIdentifier
			e.MoveNext();
			digestAlgorithmIdentifier = AlgorithmIdentifier.GetInstance(e.Current);

			e.MoveNext();
			Asn1Sequence datagroupHashSeq = Asn1Sequence.GetInstance(e.Current);

			if (version.Value.Equals(BigInteger.One))
			{
				e.MoveNext();
				versionInfo = LdsVersionInfo.GetInstance(e.Current);
			}

			CheckDatagroupHashSeqSize(datagroupHashSeq.Count);

			datagroupHash = new DataGroupHash[datagroupHashSeq.Count];
			for (int i= 0; i< datagroupHashSeq.Count; i++)
			{
				datagroupHash[i] = DataGroupHash.GetInstance(datagroupHashSeq[i]);
			}
		}

		public RsaDigestSigner(
			IDigest digest)
        {
            this.digest = digest;

			algId = new AlgorithmIdentifier( (DerObjectIdentifier)oidMap[digest.AlgorithmName] , DerNull.Instance);
        }

 private PbmParameter(Asn1Sequence seq)
 {
     salt = Asn1OctetString.GetInstance(seq[0]);
     owf = AlgorithmIdentifier.GetInstance(seq[1]);
     iterationCount = DerInteger.GetInstance(seq[2]);
     mac = AlgorithmIdentifier.GetInstance(seq[3]);
 }

		public override void PerformTest()
		{
			AlgorithmIdentifier algId = new AlgorithmIdentifier(new DerObjectIdentifier("1.2.2.3"));
			byte[] digest = new byte[20];
			OtherHash otherHash = new OtherHash(
				new OtherHashAlgAndValue(algId, digest));
			OtherCertID otherCertID = new OtherCertID(otherHash);

			OtherSigningCertificate otherCert = new OtherSigningCertificate(otherCertID);

			checkConstruction(otherCert, otherCertID);

			otherCert = OtherSigningCertificate.GetInstance(null);

			if (otherCert != null)
			{
				Fail("null GetInstance() failed.");
			}

			try
			{
				OtherCertID.GetInstance(new Object());

				Fail("GetInstance() failed to detect bad object.");
			}
			catch (ArgumentException)
			{
				// expected
			}
		}

		public RecipientInfo Generate(KeyParameter contentEncryptionKey, SecureRandom random)
		{
			byte[] keyBytes = contentEncryptionKey.GetKey();

			string rfc3211WrapperName = Helper.GetRfc3211WrapperName(keyEncryptionKeyOID);
			IWrapper keyWrapper = Helper.CreateWrapper(rfc3211WrapperName);

			// Note: In Java build, the IV is automatically generated in JCE layer
			int ivLength = Platform.StartsWith(rfc3211WrapperName, "DESEDE") ? 8 : 16;
			byte[] iv = new byte[ivLength];
			random.NextBytes(iv);

			ICipherParameters parameters = new ParametersWithIV(keyEncryptionKey, iv);
			keyWrapper.Init(true, new ParametersWithRandom(parameters, random));
        	Asn1OctetString encryptedKey = new DerOctetString(
				keyWrapper.Wrap(keyBytes, 0, keyBytes.Length));

			DerSequence seq = new DerSequence(
				new DerObjectIdentifier(keyEncryptionKeyOID),
				new DerOctetString(iv));

			AlgorithmIdentifier keyEncryptionAlgorithm = new AlgorithmIdentifier(
				PkcsObjectIdentifiers.IdAlgPwriKek, seq);

			return new RecipientInfo(new PasswordRecipientInfo(
				keyDerivationAlgorithm, keyEncryptionAlgorithm, encryptedKey));
		}