static void write()

in microprofile-extensions/microprofile-extensions-config/secured-string-converter/src/main/java/org/apache/geronimo/microprofile/extensions/config/converter/secure/MasterKey.java [40:66]

• 25 lines of code
• 4 McCabe index (conditional complexity)

    static void write(final String location, final String masterKey) {
        final byte[] key = masterKey.getBytes(StandardCharsets.UTF_8);

        try (final DataOutputStream stream =
                new DataOutputStream(new BufferedOutputStream(Files.newOutputStream(Paths.get(location))))) {
            final int[] indices = new int[key.length];
            final byte[] data = new byte[SIZE];

            final SecureRandom secureRandom = new SecureRandom();
            new Random(System.currentTimeMillis()).nextBytes(data);
            for (int i = 0; i < key.length; i++) {
                final int index = secureRandom.nextInt(SIZE);
                indices[i] = index;
                data[index] = key[i];
            }
            stream.writeInt(key.length);
            for (final int keyByte : indices) {
                stream.writeInt(keyByte);
            }
            stream.write(data);
            final byte[] footer = new byte[secureRandom.nextInt(key.length)];
            secureRandom.nextBytes(footer);
            stream.write(footer);
        } catch (final IOException e) {
            throw new IllegalArgumentException(e);
        }
    }