Package javax.crypto

Examples of javax.crypto.Cipher.unwrap()

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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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            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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        String cekAlg = cekDesc.getContentEncryptionKeyAlgorithm();

        try
        {
            return cipher.unwrap(encryptedKey, cekAlg, Cipher.SECRET_KEY);
        }
        catch (Exception e)
        {
            if (log.isDebugEnabled())
            {
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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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            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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                                            String wrappedKeyAlgo,
                                            Key unwrapperKey,
                                            KeyProperties keyProps)  throws SecurityException {
        try {
            Cipher c = initCipher(unwrapperKey, keyProps, Cipher.UNWRAP_MODE);
            return (SecretKey)c.unwrap(wrappedBytes, wrappedKeyAlgo, Cipher.SECRET_KEY);
        } catch (Exception ex) {
            throw new SecurityException(ex);
        }   
    }
   
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                                            Key unwrapperKey,
                                            KeyProperties keyProps,
                                            int wrappedKeyType)  throws SecurityException {
        try {
            Cipher c = initCipher(unwrapperKey, keyProps, Cipher.UNWRAP_MODE);
            return c.unwrap(wrappedBytes, wrappedKeyAlgo, wrappedKeyType);
        } catch (Exception ex) {
            throw new SecurityException(ex);
        }   
    }
   
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    assert(wrappedKey.length == randomKey.length);

   
    Cipher keyUnwrapCipher = Cipher.getInstance("AES/ECB/NoPadding");
    keyUnwrapCipher.init(Cipher.UNWRAP_MODE, new SecretKeySpec(kek, "AES"));
    Key unwrappedKey = keyUnwrapCipher.unwrap(wrappedKey, "AES", Cipher.SECRET_KEY);
   
    byte[] unwrappedKeyBytes = unwrappedKey.getEncoded();
    assert(Arrays.equals(unwrappedKeyBytes, randomKey));
   
  }
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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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