Examples of javax.crypto.Cipher.unwrap()

javax.crypto.Cipher.unwrap()
@com.intel.drl.spec_ref

          kmBytes[i] = (byte)(i + 1);
        SecretKeySpec km = new SecretKeySpec(kmBytes, "TripleDES");
        byte[] cipherText = kwa.wrap(km);


        kwa.init(Cipher.UNWRAP_MODE, kek);
        Key k = kwa.unwrap(cipherText, "TripleDES", Cipher.SECRET_KEY);
        // key-unwrap ALWAYS returns a parity-adjusted (proper!) key
        TripleDES.adjustParity(kmBytes, 0);
        SecretKeySpec kmpa = new SecretKeySpec(kmBytes, "TripleDES");
        harness.check(kmpa.equals(k),
                      "Unwrapped and original key-material MUST match");

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    Key ret;


    try {    
      c.init(Cipher.UNWRAP_MODE, _key);
      ret = c.unwrap(encryptedBytes, jceKeyAlgorithm, Cipher.SECRET_KEY);
      
    } catch (InvalidKeyException ike) {
      throw new XMLEncryptionException("empty", ike);
    } catch (NoSuchAlgorithmException nsae) {
      throw new XMLEncryptionException("empty", nsae);

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        byte[] encryptedEphemeralKey = null;
        byte[] decryptedBytes = null;
        try {
            encryptedEphemeralKey = getDecodedBase64EncodedData(xencCipherValue);
            String keyAlgorithm = JCEMapper.translateURItoJCEID(encryptedKeyTransportMethod);
            decryptedBytes = cipher.unwrap(encryptedEphemeralKey, keyAlgorithm, Cipher.SECRET_KEY).getEncoded();
        } catch (IllegalStateException ex) {
            throw new WSSecurityException(WSSecurityException.ErrorCode.FAILED_CHECK, ex);
        } catch (Exception ex) {
            decryptedBytes = getRandomKey(dataRefURIs, elem.getOwnerDocument(), wsDocInfo);
        }

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            if (oaepParameters == null) {
                c.init(Cipher.UNWRAP_MODE, key);
            } else {
                c.init(Cipher.UNWRAP_MODE, key, oaepParameters);
            }
            ret = c.unwrap(encryptedBytes, jceKeyAlgorithm, Cipher.SECRET_KEY);
        } catch (InvalidKeyException ike) {
            throw new XMLEncryptionException("empty", ike);
        } catch (NoSuchAlgorithmException nsae) {
            throw new XMLEncryptionException("empty", nsae);
        } catch (InvalidAlgorithmParameterException e) {

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                            generateDigest(encryptedKeyType.getCipherData().getCipherValue());
                        String sha1Identifier = Base64.encode(sha1Bytes);
                        super.setSha1Identifier(sha1Identifier);
                        
                        try {
                            Key key = cipher.unwrap(encryptedKeyType.getCipherData().getCipherValue(),
                                    jceName,
                                    Cipher.SECRET_KEY);
                            return this.decryptedKey = key.getEncoded();
                        } catch (IllegalStateException e) {
                            throw new XMLSecurityException(e);

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            if (oaepParameters == null) {
                c.init(Cipher.UNWRAP_MODE, key);
            } else {
                c.init(Cipher.UNWRAP_MODE, key, oaepParameters);
            }
            ret = c.unwrap(encryptedBytes, jceKeyAlgorithm, Cipher.SECRET_KEY);
        } catch (InvalidKeyException ike) {
            throw new XMLEncryptionException("empty", ike);
        } catch (NoSuchAlgorithmException nsae) {
            throw new XMLEncryptionException("empty", nsae);
        } catch (InvalidAlgorithmParameterException e) {

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        byte[] encryptedEphemeralKey = null;
        byte[] decryptedBytes = null;
        try {
            encryptedEphemeralKey = getDecodedBase64EncodedData(xencCipherValue);
            String keyAlgorithm = JCEMapper.translateURItoJCEID(encryptedKeyTransportMethod);
            decryptedBytes = cipher.unwrap(encryptedEphemeralKey, keyAlgorithm, Cipher.SECRET_KEY).getEncoded();
        } catch (IllegalStateException ex) {
            throw new WSSecurityException(WSSecurityException.ErrorCode.FAILED_CHECK, ex);
        } catch (Exception ex) {
            decryptedBytes = getRandomKey(dataRefURIs, elem.getOwnerDocument(), wsDocInfo);
        }

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            Cipher cipher = Cipher.getInstance(algorithm, bcProvider);


            cipher.init(Cipher.UNWRAP_MODE, k, defParams);


            // we pass "" as the key algorithm type as it is unknown at this point
            out = (PrivateKey)cipher.unwrap(data, "", Cipher.PRIVATE_KEY);
        }
        catch (Exception e)
        {
            throw new IOException("exception unwrapping private key - " + e.toString());
        }

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            .getAlgorithm().getId())) {
          final Cipher dataCipher;
          try {
            Cipher unwrapper = Cipher.getInstance("RSA");
            unwrapper.init(Cipher.UNWRAP_MODE, priKey);
            Key encKey = unwrapper.unwrap(encryptedContentEncryptionKey, "DES", Cipher.SECRET_KEY);
            ASN1Encodable sParams = contentEncryptionAlgorithm.getParameters();
            
            dataCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
            dataCipher.init(Cipher.DECRYPT_MODE, encKey, new IvParameterSpec(
                                ASN1OctetString.getInstance(sParams).getOctets()));

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        wrapper.init(Cipher.UNWRAP_MODE, new SecretKeySpec(kek, "AES"));


        try
        {
            Key  pText = wrapper.unwrap(out, "AES", Cipher.SECRET_KEY);
            if (!areEqual(pText.getEncoded(), in))
            {
                fail("failed unwrap test " + id  + " expected " + new String(Hex.encode(in)) + " got " + new String(Hex.encode(pText.getEncoded())));
            }
        }

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