Examples with PwDbOutputException com.keepassdroid.database.exception.PwDbOutputException used on opensource projects

Example 6 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class PwDbV4Output method attachStreamEncryptor.

private CipherOutputStream attachStreamEncryptor(PwDbHeaderV4 header, OutputStream os) throws PwDbOutputException {
    Cipher cipher;
    try {
        // mPM.makeFinalKey(header.masterSeed, mPM.kdfParameters);
        cipher = engine.getCipher(Cipher.ENCRYPT_MODE, mPM.finalKey, header.encryptionIV);
    } catch (Exception e) {
        throw new PwDbOutputException("Invalid algorithm.", e);
    }
    CipherOutputStream cos = new CipherOutputStream(os, cipher);
    return cos;
}

Example 7 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class PwDbV4Output method outputHeader.

@Override
public PwDbHeader outputHeader(OutputStream os) throws PwDbOutputException {
    PwDbHeaderV4 header = new PwDbHeaderV4(mPM);
    setIVs(header);
    PwDbHeaderOutputV4 pho = new PwDbHeaderOutputV4(mPM, header, os);
    try {
        pho.output();
    } catch (IOException e) {
        throw new PwDbOutputException("Failed to output the header.", e);
    }
    hashOfHeader = pho.getHashOfHeader();
    headerHmac = pho.headerHmac;
    return header;
}

Example 8 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class PwDbV4Output method setIVs.

@Override
protected SecureRandom setIVs(PwDbHeader header) throws PwDbOutputException {
    SecureRandom random = super.setIVs(header);
    PwDbHeaderV4 h = (PwDbHeaderV4) header;
    random.nextBytes(h.masterSeed);
    int ivLength = engine.ivLength();
    if (ivLength != h.encryptionIV.length) {
        h.encryptionIV = new byte[ivLength];
    }
    random.nextBytes(h.encryptionIV);
    UUID kdfUUID = mPM.kdfParameters.kdfUUID;
    KdfEngine kdf = KdfFactory.get(kdfUUID);
    kdf.randomize(mPM.kdfParameters);
    if (h.version < PwDbHeaderV4.FILE_VERSION_32_4) {
        h.innerRandomStream = CrsAlgorithm.Salsa20;
        h.innerRandomStreamKey = new byte[32];
    } else {
        h.innerRandomStream = CrsAlgorithm.ChaCha20;
        h.innerRandomStreamKey = new byte[64];
    }
    random.nextBytes(h.innerRandomStreamKey);
    randomStream = PwStreamCipherFactory.getInstance(h.innerRandomStream, h.innerRandomStreamKey);
    if (randomStream == null) {
        throw new PwDbOutputException("Invalid random cipher");
    }
    if (h.version < PwDbHeaderV4.FILE_VERSION_32_4) {
        random.nextBytes(h.streamStartBytes);
    }
    return random;
}

Example 9 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class PwDbV3Output method output.

@Override
public void output() throws PwDbOutputException {
    prepForOutput();
    PwDbHeader header = outputHeader(mOS);
    byte[] finalKey = getFinalKey(header);
    Cipher cipher;
    try {
        if (mPM.algorithm == PwEncryptionAlgorithm.Rjindal) {
            cipher = CipherFactory.getInstance("AES/CBC/PKCS5Padding");
        } else if (mPM.algorithm == PwEncryptionAlgorithm.Twofish) {
            cipher = CipherFactory.getInstance("Twofish/CBC/PKCS7PADDING");
        } else {
            throw new Exception();
        }
    } catch (Exception e) {
        throw new PwDbOutputException("Algorithm not supported.");
    }
    try {
        cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(finalKey, "AES"), new IvParameterSpec(header.encryptionIV));
        CipherOutputStream cos = new CipherOutputStream(mOS, cipher);
        BufferedOutputStream bos = new BufferedOutputStream(cos);
        outputPlanGroupAndEntries(bos);
        bos.flush();
        bos.close();
    } catch (InvalidKeyException e) {
        throw new PwDbOutputException("Invalid key");
    } catch (InvalidAlgorithmParameterException e) {
        throw new PwDbOutputException("Invalid algorithm parameter.");
    } catch (IOException e) {
        throw new PwDbOutputException("Failed to output final encrypted part.");
    }
}

Example 10 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class PwDbV3Output method getFinalKey.

public byte[] getFinalKey(PwDbHeader header) throws PwDbOutputException {
    try {
        PwDbHeaderV3 h3 = (PwDbHeaderV3) header;
        mPM.makeFinalKey(h3.masterSeed, h3.transformSeed, mPM.numKeyEncRounds);
        return mPM.finalKey;
    } catch (IOException e) {
        throw new PwDbOutputException("Key creation failed: " + e.getMessage());
    }
}