Package org.bouncycastle2.crypto.params

Examples of org.bouncycastle2.crypto.params.ParametersWithIV

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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];

      for (int currentBytePos = 0; currentBytePos != inLen; currentBytePos += blockSize)
      {
         engine.processBlock(in, inOff + currentBytePos, TEMP3, currentBytePos);
      }

      // Reverse the order of the octets in TEMP3 and call the result TEMP2.
      byte[] TEMP2 = reverse(TEMP3);

      // 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[] WKCKS = new byte[TEMP1.length];

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    {
        this.forEncryption = forEncryption;
    
        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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        if (!(params instanceof ParametersWithIV))
        {
            throw new IllegalArgumentException("Salsa20 Init parameters must include an IV");
        }

        ParametersWithIV ivParams = (ParametersWithIV) params;

        byte[] iv = ivParams.getIV();

        if (iv == null || iv.length != 8)
        {
            throw new IllegalArgumentException("Salsa20 requires exactly 8 bytes of IV");
        }

        if (!(ivParams.getParameters() instanceof KeyParameter))
        {
            throw new IllegalArgumentException("Salsa20 Init parameters must include a key");
        }

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

        workingKey = key.getKey();
        workingIV = iv;

        setKey(workingKey, workingIV);
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        byte[] iv = new byte[blockSize];

        System.arraycopy(in, inOff, cekBlock, 0, inLen);
        System.arraycopy(in, inOff, iv, 0, iv.length);
       
        engine.init(false, new ParametersWithIV(param.getParameters(), iv));

        for (int i = blockSize; i < cekBlock.length; i += blockSize)
        {
            engine.processBlock(cekBlock, i, cekBlock, i);   
        }

        System.arraycopy(cekBlock, cekBlock.length - iv.length, iv, 0, iv.length);

        engine.init(false, new ParametersWithIV(param.getParameters(), iv));

        engine.processBlock(cekBlock, 0, cekBlock, 0);

        engine.init(false, param);
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        {
            throw new IllegalArgumentException(
                "Grain-128 Init parameters must include an IV");
        }

        ParametersWithIV ivParams = (ParametersWithIV)params;

        byte[] iv = ivParams.getIV();

        if (iv == null || iv.length != 12)
        {
            throw new IllegalArgumentException(
                "Grain-128  requires exactly 12 bytes of IV");
        }

        if (!(ivParams.getParameters() instanceof KeyParameter))
        {
            throw new IllegalArgumentException(
                "Grain-128 Init parameters must include a key");
        }

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

        /**
         * Initialize variables.
         */
        workingIV = new byte[key.getKey().length];
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        }

        if (params instanceof javax.crypto.spec.IvParameterSpec)
        {
            IvParameterSpec iv = (IvParameterSpec) params;
            param = new ParametersWithIV(param, iv.getIV());
        }

        if (param instanceof KeyParameter && ivSize != 0)
        {
            iv = new byte[ivSize];
            random.nextBytes(iv);
            param = new ParametersWithIV(param, iv);
        }

        switch (opmode)
        {
        case Cipher.WRAP_MODE:
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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)
                {
                    // 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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            macSize = param.getMacSize() / 8;
            keyParam = param.getKey();
        }
        else if (params instanceof ParametersWithIV)
        {
            ParametersWithIV param = (ParametersWithIV)params;

            nonce = param.getIV();
            associatedText = new byte[0];
            macSize = mac.getMacSize() / 2;
            keyParam = param.getParameters();
        }
        else
        {
            throw new IllegalArgumentException("invalid parameters passed to EAX");
        }

        byte[] tag = new byte[blockSize];

        mac.init(keyParam);
        tag[blockSize - 1] = hTAG;
        mac.update(tag, 0, blockSize);
        mac.update(associatedText, 0, associatedText.length);
        mac.doFinal(associatedTextMac, 0);

        tag[blockSize - 1] = nTAG;
        mac.update(tag, 0, blockSize);
        mac.update(nonce, 0, nonce.length);
        mac.doFinal(nonceMac, 0);

        tag[blockSize - 1] = cTAG;
        mac.update(tag, 0, blockSize);

        cipher.init(true, new ParametersWithIV(keyParam, nonceMac));
    }
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        byte[]  dKey = generateDerivedKey(KEY_MATERIAL, keySize);

        byte[]  iv = generateDerivedKey(IV_MATERIAL, ivSize);

        return new ParametersWithIV(new KeyParameter(dKey, 0, keySize), iv, 0, ivSize);
    }
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                   "Can't generate a derived key " + (keySize + ivSize) + " bytes long.");
        }

        byte[]  dKey = generateDerivedKey();

        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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