Examples with SecureFileOutputStream net.i2p.util.SecureFileOutputStream used on opensource projects

Example 21 with SecureFileOutputStream

use of net.i2p.util.SecureFileOutputStream in project i2p.i2p-bote by i2p.

the class KademliaDHT method writePeers.

private void writePeers(List<KademliaPeer> peers, File file) {
    BufferedWriter writer = null;
    try {
        writer = new BufferedWriter(new OutputStreamWriter(new SecureFileOutputStream(file.getAbsolutePath())));
        writer.write("# Each line is one Base64-encoded I2P destination.");
        writer.newLine();
        writer.write("# Do not edit while I2P-Bote is running as it will be overwritten.");
        writer.newLine();
        for (KademliaPeer peer : peers) {
            writer.write(peer.toBase64());
            writer.newLine();
        }
    } catch (IOException e) {
        log.error("Can't write peers to file <" + file.getAbsolutePath() + ">", e);
    } finally {
        if (writer != null)
            try {
                writer.close();
            } catch (IOException e) {
                log.error("Can't close BufferedWriter for file <" + file.getAbsolutePath() + ">", e);
            }
    }
}

Example 22 with SecureFileOutputStream

use of net.i2p.util.SecureFileOutputStream in project i2p.i2p-bote by i2p.

the class I2PBote method saveLocalDestinationKeys.

/**
 * Writes private + public keys for the local destination out to a file.
 * @param keyFile
 * @param localDestinationArray
 * @throws DataFormatException
 * @throws IOException
 */
private void saveLocalDestinationKeys(File keyFile, byte[] localDestinationArray) throws DataFormatException, IOException {
    keyFile = new SecureFile(keyFile.getAbsolutePath());
    if (keyFile.exists()) {
        File oldKeyFile = new File(keyFile.getPath() + "_backup");
        if (!keyFile.renameTo(oldKeyFile))
            log.error("Cannot rename destination key file <" + keyFile.getAbsolutePath() + "> to <" + oldKeyFile.getAbsolutePath() + ">");
    } else if (!keyFile.createNewFile())
        log.error("Cannot create destination key file: <" + keyFile.getAbsolutePath() + ">");
    BufferedWriter fileWriter = new BufferedWriter(new OutputStreamWriter(new SecureFileOutputStream(keyFile)));
    try {
        fileWriter.write(Base64.encode(localDestinationArray));
    } finally {
        fileWriter.close();
    }
}

Example 23 with SecureFileOutputStream

use of net.i2p.util.SecureFileOutputStream in project i2p.i2p-bote by i2p.

the class AddressBook method save.

public void save() throws IOException, PasswordException, GeneralSecurityException {
    initializeIfNeeded();
    OutputStream encryptedStream = new EncryptedOutputStream(new SecureFileOutputStream(addressFile), passwordHolder);
    try {
        Properties properties = saveToProperties();
        properties.store(new OutputStreamWriter(encryptedStream, "UTF-8"), null);
    } catch (IOException e) {
        log.error("Can't save email identities to file <" + addressFile.getAbsolutePath() + ">.", e);
        throw e;
    } finally {
        encryptedStream.close();
    }
}

Example 24 with SecureFileOutputStream

use of net.i2p.util.SecureFileOutputStream in project i2p.i2p-bote by i2p.

the class PasswordCache method createDerivedKey.

/**
 * Reads salt and <code>scrypt</code> parameters from the cache file, or chooses
 * a new salt array if the file doesn't exist. The encryption key is then computed
 * and the variable <code>derivedKey</code> is populated.
 * @throws IOException
 * @throws GeneralSecurityException
 */
private void createDerivedKey() throws IOException, GeneralSecurityException {
    byte[] salt = null;
    derivedKey = null;
    // read salt + scrypt parameters from file if available
    File derivParamFile = configuration.getKeyDerivationParametersFile();
    if (derivParamFile.exists())
        derivedKey = FileEncryptionUtil.getEncryptionKey(password, derivParamFile);
    // if necessary, create a new salt and key and write the derivation parameters to the cache file
    if (derivedKey == null || !derivedKey.scryptParams.equals(KDF_PARAMETERS)) {
        I2PAppContext appContext = I2PAppContext.getGlobalContext();
        salt = new byte[SALT_LENGTH];
        appContext.random().nextBytes(salt);
        DataOutputStream outputStream = null;
        try {
            byte[] key = FileEncryptionUtil.getEncryptionKey(password, salt, KDF_PARAMETERS);
            derivedKey = new DerivedKey(salt, KDF_PARAMETERS, key);
            outputStream = new DataOutputStream(new SecureFileOutputStream(derivParamFile));
            KDF_PARAMETERS.writeTo(outputStream);
            outputStream.write(salt);
        } finally {
            if (outputStream != null)
                outputStream.close();
        }
    }
}

Example 25 with SecureFileOutputStream

use of net.i2p.util.SecureFileOutputStream in project i2p.i2p by i2p.

the class PersistNews method store.

/**
 *  Store each entry.
 *  Old entries are always overwritten, as they may change even without the updated date changing.
 *
 *  @param entries each one should be "entry" at the root
 *  @return success
 */
public static boolean store(I2PAppContext ctx, List<Node> entries) {
    Log log = ctx.logManager().getLog(PersistNews.class);
    File dir = new SecureDirectory(ctx.getConfigDir(), DIR);
    if (!dir.exists())
        dir.mkdirs();
    StringBuilder buf = new StringBuilder();
    boolean rv = true;
    for (Node entry : entries) {
        Node nid = entry.getNode("id");
        if (nid == null) {
            if (log.shouldWarn())
                log.warn("entry without UUID");
            continue;
        }
        String id = nid.getValue();
        if (id == null) {
            if (log.shouldWarn())
                log.warn("entry without UUID");
            continue;
        }
        String name = idToName(ctx, id);
        File file = new File(dir, name);
        Writer out = null;
        try {
            out = new OutputStreamWriter(new GZIPOutputStream(new SecureFileOutputStream(file)));
            out.write(XML_START);
            XMLParser.toString(buf, entry);
            out.write(buf.toString());
            buf.setLength(0);
        } catch (IOException ioe) {
            if (log.shouldWarn())
                log.warn("failed store to " + file, ioe);
            rv = false;
        } finally {
            if (out != null)
                try {
                    out.close();
                } catch (IOException ioe) {
                }
        }
    }
    return rv;
}