Package org.bouncycastle2.crypto.params

Examples of org.bouncycastle2.crypto.params.ParametersWithIV

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            macSize = macSizeBits / 8;
            keyParam = param.getKey();
        }
        else if (params instanceof ParametersWithIV)
        {
            ParametersWithIV param = (ParametersWithIV)params;

            nonce = param.getIV();
            A = null;
            macSize = 16;
            keyParam = (KeyParameter)param.getParameters();
        }
        else
        {
            throw new IllegalArgumentException("invalid parameters passed to GCM");
        }
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        CipherParameters    params)
        throws IllegalArgumentException
    {
        if (params instanceof ParametersWithIV)
        {
          ParametersWithIV ivParam = (ParametersWithIV)params;
          byte[]           iv      = ivParam.getIV();
          System.arraycopy(iv, 0, IV, 0, IV.length);

          reset();
          cipher.init(true, ivParam.getParameters());
        }
        else
        {
            throw new IllegalArgumentException("SIC mode requires ParametersWithIV");
        }
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    {
        this.encrypting = encrypting;
       
        if (params instanceof ParametersWithIV)
        {
                ParametersWithIV ivParam = (ParametersWithIV)params;
                byte[]      iv = ivParam.getIV();

                if (iv.length != blockSize)
                {
                    throw new IllegalArgumentException("initialisation vector must be the same length as block size");
                }

                System.arraycopy(iv, 0, IV, 0, iv.length);

                reset();

                cipher.init(encrypting, ivParam.getParameters());
        }
        else
        {
                reset();
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            macSize = param.getMacSize() / 8;
            keyParam = param.getKey();
        }
        else if (params instanceof ParametersWithIV)
        {
            ParametersWithIV param = (ParametersWithIV)params;

            nonce = param.getIV();
            associatedText = null;
            macSize = macBlock.length / 2;
            keyParam = param.getParameters();
        }
        else
        {
            throw new IllegalArgumentException("invalid parameters passed to CCM");
        }
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        iv[0] = (byte)(((15 - nonce.length) - 1) & 0x7);
       
        System.arraycopy(nonce, 0, iv, 1, nonce.length);
       
        ctrCipher.init(forEncryption, new ParametersWithIV(keyParam, iv));
       
        if (forEncryption)
        {
            int index = inOff;
            int outOff = 0;
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        {
            param = new KeyParameter(key.getEncoded());
        }
        else if (params instanceof IvParameterSpec)
        {
            param = new ParametersWithIV(new KeyParameter(key.getEncoded()), ((IvParameterSpec)params).getIV());
            ivParam = (ParametersWithIV)param;
        }
        else
        {
            throw new IllegalArgumentException("unknown parameter type.");
        }

        if ((ivLength != 0) && !(param instanceof ParametersWithIV))
        {
            SecureRandom    ivRandom = random;

            if (ivRandom == null)
            {
                ivRandom = new SecureRandom();
            }

            if ((opmode == Cipher.ENCRYPT_MODE) || (opmode == Cipher.WRAP_MODE))
            {
                byte[]  iv = new byte[ivLength];

                ivRandom.nextBytes(iv);
                param = new ParametersWithIV(param, iv);
                ivParam = (ParametersWithIV)param;
            }
            else
            {
                throw new InvalidAlgorithmParameterException("no IV set when one expected");
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        CipherParameters    params)
        throws IllegalArgumentException
    {
        if (params instanceof ParametersWithIV)
        {
                ParametersWithIV ivParam = (ParametersWithIV)params;
                byte[]      iv = ivParam.getIV();

                if (iv.length < IV.length)
                {
                    System.arraycopy(iv, 0, IV, IV.length - iv.length, iv.length);
                }
                else
                {
                    System.arraycopy(iv, 0, IV, 0, IV.length);
                }

                reset();

                cipher.init(true, ivParam.getParameters());
        }
        else
        {
                reset();
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        {
            throw new IllegalArgumentException(
                "VMPC-MAC Init parameters must include an IV");
        }

        ParametersWithIV ivParams = (ParametersWithIV) params;
        KeyParameter key = (KeyParameter) ivParams.getParameters();

        if (!(ivParams.getParameters() instanceof KeyParameter))
        {
            throw new IllegalArgumentException(
                "VMPC-MAC Init parameters must include a key");
        }

        this.workingIV = ivParams.getIV();

        if (workingIV == null || workingIV.length < 1 || workingIV.length > 768)
        {
            throw new IllegalArgumentException(
                "VMPC-MAC requires 1 to 768 bytes of IV");
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        keySize = keySize / 8;
        ivSize = ivSize / 8;

        byte[]  dKey = generateDerivedKey(keySize + ivSize);

        return new ParametersWithIV(new KeyParameter(dKey, 0, keySize), dKey, keySize, ivSize);
    }
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        keySize = keySize / 8;
        ivSize = ivSize / 8;

        byte[]  dKey = generateDerivedKey(keySize + ivSize);

        return new ParametersWithIV(new KeyParameter(dKey, 0, keySize), dKey, keySize, ivSize);
    }
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Related Classes of org.bouncycastle2.crypto.params.ParametersWithIV

  • org.bouncycastle2.asn1.ASN1InputStream
  • org.bouncycastle2.asn1.ASN1Sequence
  • org.bouncycastle2.asn1.cryptopro.GOST3410PublicKeyAlgParameters
  • org.bouncycastle2.asn1.DERObjectIdentifier
  • org.bouncycastle2.asn1.DEROctetString
  • org.bouncycastle2.asn1.pkcs.RSAPrivateKeyStructure
  • org.bouncycastle2.asn1.x509.RSAPublicKeyStructure
  • org.bouncycastle2.crypto.BufferedBlockCipher
  • org.bouncycastle2.crypto.CipherParameters
  • org.bouncycastle2.crypto.digests.SHA1Digest
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