Exemplo n.º 1
0
 public KeyTransRecipientInfo(
     Asn1Sequence seq)
 {
     this.version = (DerInteger)seq[0];
     this.rid     = RecipientIdentifier.GetInstance(seq[1]);
     this.keyEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(seq[2]);
     this.encryptedKey           = (Asn1OctetString)seq[3];
 }
		public KeyTransRecipientInfo(
            Asn1Sequence seq)
        {
            this.version = (DerInteger) seq[0];
            this.rid = RecipientIdentifier.GetInstance(seq[1]);
            this.keyEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(seq[2]);
            this.encryptedKey = (Asn1OctetString) seq[3];
        }
Exemplo n.º 3
0
        public KeyTransRecipientInfo(
            RecipientIdentifier rid,
            AlgorithmIdentifier keyEncryptionAlgorithm,
            Asn1OctetString encryptedKey)
        {
            if (rid.ToAsn1Object() is Asn1TaggedObject)
            {
                this.version = new DerInteger(2);
            }
            else
            {
                this.version = new DerInteger(0);
            }

            this.rid = rid;
            this.keyEncryptionAlgorithm = keyEncryptionAlgorithm;
            this.encryptedKey           = encryptedKey;
        }
		public KeyTransRecipientInfo(
            RecipientIdentifier rid,
            AlgorithmIdentifier keyEncryptionAlgorithm,
            Asn1OctetString     encryptedKey)
        {
            if (rid.ToAsn1Object() is Asn1TaggedObject)
            {
                this.version = new DerInteger(2);
            }
            else
            {
                this.version = new DerInteger(0);
            }

			this.rid = rid;
            this.keyEncryptionAlgorithm = keyEncryptionAlgorithm;
            this.encryptedKey = encryptedKey;
        }
		public RecipientInfo Generate(KeyParameter contentEncryptionKey, SecureRandom random)
		{
			byte[] keyBytes = contentEncryptionKey.GetKey();
			AlgorithmIdentifier keyEncryptionAlgorithm = info.AlgorithmID;

			IWrapper keyWrapper = Helper.CreateWrapper(keyEncryptionAlgorithm.ObjectID.Id);
			keyWrapper.Init(true, new ParametersWithRandom(recipientPublicKey, random));
			byte[] encryptedKeyBytes = keyWrapper.Wrap(keyBytes, 0, keyBytes.Length);

			RecipientIdentifier recipId;
			if (recipientTbsCert != null)
			{
				IssuerAndSerialNumber issuerAndSerial = new IssuerAndSerialNumber(
					recipientTbsCert.Issuer, recipientTbsCert.SerialNumber.Value);
				recipId = new RecipientIdentifier(issuerAndSerial);
			}
			else
			{
				recipId = new RecipientIdentifier(subjectKeyIdentifier);
			}

			return new RecipientInfo(new KeyTransRecipientInfo(recipId, keyEncryptionAlgorithm,
				new DerOctetString(encryptedKeyBytes)));
		}