Examples with FPEParameters com.github.zhenwei.core.crypto.params.FPEParameters used on opensource projects

Example 1 with FPEParameters

use of com.github.zhenwei.core.crypto.params.FPEParameters in project LinLong-Java by zhenwei1108.

the class BaseBlockCipher method engineInit.

protected void engineInit(int opmode, Key key, final AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException {
    CipherParameters param;
    this.pbeSpec = null;
    this.pbeAlgorithm = null;
    this.engineParams = null;
    this.aeadParams = null;
    // 
    if (!(key instanceof SecretKey)) {
        throw new InvalidKeyException("Key for algorithm " + ((key != null) ? key.getAlgorithm() : null) + " not suitable for symmetric enryption.");
    }
    // 
    if (params == null && (baseEngine != null && baseEngine.getAlgorithmName().startsWith("RC5-64"))) {
        throw new InvalidAlgorithmParameterException("RC5 requires an RC5ParametersSpec to be passed in.");
    }
    // 
    if (scheme == PKCS12 || key instanceof PKCS12Key) {
        SecretKey k;
        try {
            k = (SecretKey) key;
        } catch (Exception e) {
            throw new InvalidKeyException("PKCS12 requires a SecretKey/PBEKey");
        }
        if (params instanceof PBEParameterSpec) {
            pbeSpec = (PBEParameterSpec) params;
        }
        if (k instanceof PBEKey && pbeSpec == null) {
            PBEKey pbeKey = (PBEKey) k;
            if (pbeKey.getSalt() == null) {
                throw new InvalidAlgorithmParameterException("PBEKey requires parameters to specify salt");
            }
            pbeSpec = new PBEParameterSpec(pbeKey.getSalt(), pbeKey.getIterationCount());
        }
        if (pbeSpec == null && !(k instanceof PBEKey)) {
            throw new InvalidKeyException("Algorithm requires a PBE key");
        }
        if (key instanceof BCPBEKey) {
            // PKCS#12 sets an IV, if we get a key that doesn't have ParametersWithIV we need to reject it. If the
            // key has no parameters it means it's an old-school JCE PBE Key - we use getEncoded() on it.
            CipherParameters pbeKeyParam = ((BCPBEKey) key).getParam();
            if (pbeKeyParam instanceof ParametersWithIV) {
                param = pbeKeyParam;
            } else if (pbeKeyParam == null) {
                param = Util.makePBEParameters(k.getEncoded(), PKCS12, digest, keySizeInBits, ivLength * 8, pbeSpec, cipher.getAlgorithmName());
            } else {
                throw new InvalidKeyException("Algorithm requires a PBE key suitable for PKCS12");
            }
        } else {
            param = Util.makePBEParameters(k.getEncoded(), PKCS12, digest, keySizeInBits, ivLength * 8, pbeSpec, cipher.getAlgorithmName());
        }
        if (param instanceof ParametersWithIV) {
            ivParam = (ParametersWithIV) param;
        }
    } else if (key instanceof PBKDF1Key) {
        PBKDF1Key k = (PBKDF1Key) key;
        if (params instanceof PBEParameterSpec) {
            pbeSpec = (PBEParameterSpec) params;
        }
        if (k instanceof PBKDF1KeyWithParameters && pbeSpec == null) {
            pbeSpec = new PBEParameterSpec(((PBKDF1KeyWithParameters) k).getSalt(), ((PBKDF1KeyWithParameters) k).getIterationCount());
        }
        param = Util.makePBEParameters(k.getEncoded(), PKCS5S1, digest, keySizeInBits, ivLength * 8, pbeSpec, cipher.getAlgorithmName());
        if (param instanceof ParametersWithIV) {
            ivParam = (ParametersWithIV) param;
        }
    } else if (key instanceof BCPBEKey) {
        BCPBEKey k = (BCPBEKey) key;
        if (k.getOID() != null) {
            pbeAlgorithm = k.getOID().getId();
        } else {
            pbeAlgorithm = k.getAlgorithm();
        }
        if (k.getParam() != null) {
            param = adjustParameters(params, k.getParam());
        } else if (params instanceof PBEParameterSpec) {
            pbeSpec = (PBEParameterSpec) params;
            param = Util.makePBEParameters(k, params, cipher.getUnderlyingCipher().getAlgorithmName());
        } else {
            throw new InvalidAlgorithmParameterException("PBE requires PBE parameters to be set.");
        }
        if (param instanceof ParametersWithIV) {
            ivParam = (ParametersWithIV) param;
        }
    } else if (key instanceof PBEKey) {
        PBEKey k = (PBEKey) key;
        pbeSpec = (PBEParameterSpec) params;
        if (k instanceof PKCS12KeyWithParameters && pbeSpec == null) {
            pbeSpec = new PBEParameterSpec(k.getSalt(), k.getIterationCount());
        }
        param = Util.makePBEParameters(k.getEncoded(), scheme, digest, keySizeInBits, ivLength * 8, pbeSpec, cipher.getAlgorithmName());
        if (param instanceof ParametersWithIV) {
            ivParam = (ParametersWithIV) param;
        }
    } else if (!(key instanceof RepeatedSecretKeySpec)) {
        if (scheme == PKCS5S1 || scheme == PKCS5S1_UTF8 || scheme == PKCS5S2 || scheme == PKCS5S2_UTF8) {
            throw new InvalidKeyException("Algorithm requires a PBE key");
        }
        param = new KeyParameter(key.getEncoded());
    } else {
        param = null;
    }
    if (params instanceof AEADParameterSpec) {
        if (!isAEADModeName(modeName) && !(cipher instanceof AEADGenericBlockCipher)) {
            throw new InvalidAlgorithmParameterException("AEADParameterSpec can only be used with AEAD modes.");
        }
        AEADParameterSpec aeadSpec = (AEADParameterSpec) params;
        KeyParameter keyParam;
        if (param instanceof ParametersWithIV) {
            keyParam = (KeyParameter) ((ParametersWithIV) param).getParameters();
        } else {
            keyParam = (KeyParameter) param;
        }
        param = aeadParams = new AEADParameters(keyParam, aeadSpec.getMacSizeInBits(), aeadSpec.getNonce(), aeadSpec.getAssociatedData());
    } else if (params instanceof IvParameterSpec) {
        if (ivLength != 0) {
            IvParameterSpec p = (IvParameterSpec) params;
            if (p.getIV().length != ivLength && !(cipher instanceof AEADGenericBlockCipher) && fixedIv) {
                throw new InvalidAlgorithmParameterException("IV must be " + ivLength + " bytes long.");
            }
            if (param instanceof ParametersWithIV) {
                param = new ParametersWithIV(((ParametersWithIV) param).getParameters(), p.getIV());
            } else {
                param = new ParametersWithIV(param, p.getIV());
            }
            ivParam = (ParametersWithIV) param;
        } else {
            if (modeName != null && modeName.equals("ECB")) {
                throw new InvalidAlgorithmParameterException("ECB mode does not use an IV");
            }
        }
    } 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) {
            if (param instanceof ParametersWithIV) {
                param = new ParametersWithIV(((ParametersWithIV) param).getParameters(), gost28147Param.getIV());
            } else {
                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) {
            if (param instanceof ParametersWithIV) {
                param = new ParametersWithIV(((ParametersWithIV) param).getParameters(), rc2Param.getIV());
            } else {
                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)) {
            if (param instanceof ParametersWithIV) {
                param = new ParametersWithIV(((ParametersWithIV) param).getParameters(), rc5Param.getIV());
            } else {
                param = new ParametersWithIV(param, rc5Param.getIV());
            }
            ivParam = (ParametersWithIV) param;
        }
    } else if (params instanceof FPEParameterSpec) {
        FPEParameterSpec spec = (FPEParameterSpec) params;
        param = new FPEParameters((KeyParameter) param, spec.getRadix(), spec.getTweak(), spec.isUsingInverseFunction());
    } else if (gcmSpecClass != null && gcmSpecClass.isInstance(params)) {
        if (!isAEADModeName(modeName) && !(cipher instanceof AEADGenericBlockCipher)) {
            throw new InvalidAlgorithmParameterException("GCMParameterSpec can only be used with AEAD modes.");
        }
        final KeyParameter keyParam;
        if (param instanceof ParametersWithIV) {
            keyParam = (KeyParameter) ((ParametersWithIV) param).getParameters();
        } else {
            keyParam = (KeyParameter) param;
        }
        param = aeadParams = GcmSpecUtil.extractAeadParameters(keyParam, params);
    } else if (params != null && !(params instanceof PBEParameterSpec)) {
        throw new InvalidAlgorithmParameterException("unknown parameter type.");
    }
    if ((ivLength != 0) && !(param instanceof ParametersWithIV) && !(param instanceof AEADParameters)) {
        SecureRandom ivRandom = random;
        if (ivRandom == null) {
            ivRandom = CryptoServicesRegistrar.getSecureRandom();
        }
        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");
        }
    }
    if (random != null && padded) {
        param = new ParametersWithRandom(param, random);
    }
    try {
        switch(opmode) {
            case Cipher.ENCRYPT_MODE:
            case Cipher.WRAP_MODE:
                cipher.init(true, param);
                break;
            case Cipher.DECRYPT_MODE:
            case Cipher.UNWRAP_MODE:
                cipher.init(false, param);
                break;
            default:
                throw new InvalidParameterException("unknown opmode " + opmode + " passed");
        }
        if (cipher instanceof AEADGenericBlockCipher && aeadParams == null) {
            AEADCipher aeadCipher = ((AEADGenericBlockCipher) cipher).cipher;
            aeadParams = new AEADParameters((KeyParameter) ivParam.getParameters(), aeadCipher.getMac().length * 8, ivParam.getIV());
        }
    } catch (IllegalArgumentException e) {
        throw new InvalidAlgorithmParameterException(e.getMessage(), e);
    } catch (Exception e) {
        throw new InvalidKeyOrParametersException(e.getMessage(), e);
    }
}