Package org.bouncycastle2.crypto.params

Examples of org.bouncycastle2.crypto.params.ParametersWithIV

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        {
            throw new IllegalArgumentException(
                "Grain v1 Init parameters must include an IV");
        }

        ParametersWithIV ivParams = (ParametersWithIV)params;

        byte[] iv = ivParams.getIV();

        if (iv == null || iv.length != 8)
        {
            throw new IllegalArgumentException(
                "Grain v1 requires exactly 8 bytes of IV");
        }

        if (!(ivParams.getParameters() instanceof KeyParameter))
        {
            throw new IllegalArgumentException(
                "Grain v1 Init parameters must include a key");
        }

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

        /**
         * Initialize variables.
         */
        workingIV = new byte[key.getKey().length];
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                // well, then we have to create our own IV.
                this.iv = new byte[8];

                sr.nextBytes(iv);

                this.paramPlusIV = new ParametersWithIV(this.param, this.iv);
            }
        }

   }
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        // Encrypt TEMP3 in CBC mode using the KEK and an initialization vector
        // of 0x 4a dd a2 2c 79 e8 21 05. The resulting cipher text is the
        // desired
        // result. It is 40 octets long if a 168 bit key is being wrapped.
        ParametersWithIV param2 = new ParametersWithIV(this.param, IV2);

        this.engine.init(true, param2);

        for (int i = 0; i < noOfBlocks + 1; i++)
        {
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         */

        // Decrypt the cipher text with TRIPLedeS in CBC mode using the KEK
        // and an initialization vector (IV) of 0x4adda22c79e82105. Call the
        // output TEMP3.
        ParametersWithIV param2 = new ParametersWithIV(this.param, IV2);

        this.engine.init(false, param2);

        byte TEMP3[] = new byte[inLen];

        System.arraycopy(in, inOff, TEMP3, 0, inLen);

        for (int i = 0; i < (TEMP3.length / engine.getBlockSize()); i++)
        {
            int currentBytePos = i * engine.getBlockSize();

            engine.processBlock(TEMP3, currentBytePos, TEMP3, currentBytePos);
        }

        // Reverse the order of the octets in TEMP3 and call the result TEMP2.
        byte[] TEMP2 = new byte[TEMP3.length];

        for (int i = 0; i < TEMP3.length; i++)
        {
            TEMP2[i] = TEMP3[TEMP3.length - (i + 1)];
        }

        // Decompose TEMP2 into IV, the first 8 octets, and TEMP1, the remaining
        // octets.
        this.iv = new byte[8];

        byte[] TEMP1 = new byte[TEMP2.length - 8];

        System.arraycopy(TEMP2, 0, this.iv, 0, 8);
        System.arraycopy(TEMP2, 8, TEMP1, 0, TEMP2.length - 8);

        // Decrypt TEMP1 using TRIPLedeS in CBC mode using the KEK and the IV
        // found in the previous step. Call the result WKCKS.
        this.paramPlusIV = new ParametersWithIV(this.param, this.iv);

        this.engine.init(false, this.paramPlusIV);

        byte[] LCEKPADICV = new byte[TEMP1.length];

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                if (p.getIV().length != ivLength && !isAEADModeName(modeName))
                {
                    throw new InvalidAlgorithmParameterException("IV must be " + ivLength + " bytes long.");
                }

                param = new ParametersWithIV(new KeyParameter(key.getEncoded()), p.getIV());
                ivParam = (ParametersWithIV)param;
            }
            else
            {
                if (modeName != null && modeName.equals("ECB"))
                {
                    throw new InvalidAlgorithmParameterException("ECB mode does not use an IV");
                }
               
                param = new KeyParameter(key.getEncoded());
            }
        }
        else if (params instanceof GOST28147ParameterSpec)
        {
            GOST28147ParameterSpec    gost28147Param = (GOST28147ParameterSpec)params;

            param = new ParametersWithSBox(
                       new KeyParameter(key.getEncoded()), ((GOST28147ParameterSpec)params).getSbox());

            if (gost28147Param.getIV() != null && ivLength != 0)
            {
                param = new ParametersWithIV(param, gost28147Param.getIV());
                ivParam = (ParametersWithIV)param;
            }
        }
        else if (params instanceof RC2ParameterSpec)
        {
            RC2ParameterSpec    rc2Param = (RC2ParameterSpec)params;

            param = new RC2Parameters(key.getEncoded(), ((RC2ParameterSpec)params).getEffectiveKeyBits());

            if (rc2Param.getIV() != null && ivLength != 0)
            {
                param = new ParametersWithIV(param, rc2Param.getIV());
                ivParam = (ParametersWithIV)param;
            }
        }
        else if (params instanceof RC5ParameterSpec)
        {
            RC5ParameterSpec    rc5Param = (RC5ParameterSpec)params;

            param = new RC5Parameters(key.getEncoded(), ((RC5ParameterSpec)params).getRounds());
            if (baseEngine.getAlgorithmName().startsWith("RC5"))
            {
                if (baseEngine.getAlgorithmName().equals("RC5-32"))
                {
                    if (rc5Param.getWordSize() != 32)
                    {
                        throw new InvalidAlgorithmParameterException("RC5 already set up for a word size of 32 not " + rc5Param.getWordSize() + ".");
                    }
                }
                else if (baseEngine.getAlgorithmName().equals("RC5-64"))
                {
                    if (rc5Param.getWordSize() != 64)
                    {
                        throw new InvalidAlgorithmParameterException("RC5 already set up for a word size of 64 not " + rc5Param.getWordSize() + ".");
                    }
                }
            }
            else
            {
                throw new InvalidAlgorithmParameterException("RC5 parameters passed to a cipher that is not RC5.");
            }
            if ((rc5Param.getIV() != null) && (ivLength != 0))
            {
                param = new ParametersWithIV(param, rc5Param.getIV());
                ivParam = (ParametersWithIV)param;
            }
        }
        else
        {
            throw new InvalidAlgorithmParameterException("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 if (cipher.getUnderlyingCipher().getAlgorithmName().indexOf("PGPCFB") < 0)
            {
                throw new InvalidAlgorithmParameterException("no IV set when one expected");
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    {
        this.encrypting = encrypting;
       
        if (params instanceof ParametersWithIV)
        {
                ParametersWithIV ivParam = (ParametersWithIV)params;
                byte[]      iv = ivParam.getIV();

                if (iv.length < IV.length)
                {
                    // prepend the supplied IV with zeros (per FIPS PUB 81)
                    System.arraycopy(iv, 0, IV, IV.length - iv.length, iv.length);
                    for (int i = 0; i < IV.length - iv.length; i++)
                    {
                        IV[i] = 0;
                    }
                }
                else
                {
                    System.arraycopy(iv, 0, IV, 0, IV.length);
                }

                reset();

                cipher.init(true, ivParam.getParameters());
        }
        else
        {
                reset();
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        N3 = 0;
        N4 = 0;

        if (params instanceof ParametersWithIV)
        {
                ParametersWithIV ivParam = (ParametersWithIV)params;
                byte[]      iv = ivParam.getIV();

                if (iv.length < IV.length)
                {
                    // prepend the supplied IV with zeros (per FIPS PUB 81)
                    System.arraycopy(iv, 0, IV, IV.length - iv.length, iv.length);
                    for (int i = 0; i < IV.length - iv.length; i++)
                    {
                        IV[i] = 0;
                    }
                }
                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 init parameters must include an IV");
        }

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

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

        this.workingIV = ivParams.getIV();

        if (workingIV == null || workingIV.length < 1 || workingIV.length > 768)
        {
            throw new IllegalArgumentException("VMPC requires 1 to 768 bytes of IV");
        }
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                // Hm, we have no IV but we want to wrap ?!?
                // well, then we have to create our own IV.
                this.iv = new byte[8];
                sr.nextBytes(iv);

                this.paramPlusIV = new ParametersWithIV(this.param, this.iv);
            }
        }
        else if (param instanceof ParametersWithIV)
        {
            this.paramPlusIV = (ParametersWithIV)param;
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      byte[] TEMP3 = reverse(TEMP2);

      // Encrypt TEMP3 in CBC mode using the KEK and an initialization vector
      // of 0x 4a dd a2 2c 79 e8 21 05. The resulting cipher text is the desired
      // result. It is 40 octets long if a 168 bit key is being wrapped.
      ParametersWithIV param2 = new ParametersWithIV(this.param, IV2);

      this.engine.init(true, param2);

      for (int currentBytePos = 0; currentBytePos != TEMP3.length; currentBytePos += blockSize)
      {
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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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