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Dave
2014-12-16 01:01:48 +02:00
commit 38c2d0de5d
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70
src/nodash/core/NoConfig.java Normal file
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package nodash.core;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.nio.file.Files;
import java.nio.file.StandardOpenOption;
import java.security.NoSuchAlgorithmException;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import nodash.exceptions.NoDashFatalException;
public class NoConfig implements Serializable {
private static final long serialVersionUID = -8498303909736017075L;
public static final String CONFIG_FILENAME = "noconfig.cfg";
public SecretKey secretKey;
public boolean saveDatabase = true;
public String databaseFilename = "nodatabase.hash";
public boolean saveByteSets = false;
public String byteSetFilename = "";
public NoConfig() {
try {
KeyGenerator keyGenerator = KeyGenerator.getInstance(NoUtil.CIPHER_KEY_SPEC);
keyGenerator.init(NoUtil.AES_STRENGTH);
this.secretKey = keyGenerator.generateKey();
} catch (NoSuchAlgorithmException e) {
throw new NoDashFatalException("Value for CIPHER_KEY_SPEC not valid.");
}
}
public void saveNoConfigToFile(File file) {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(this);
byte[] data = baos.toByteArray();
Files.write(file.toPath(), data, StandardOpenOption.CREATE_NEW);
} catch (IOException e) {
throw new NoDashFatalException("Unable to save config, including generated secret key.");
}
}
public static NoConfig getNoConfigFromFile(File file) {
try {
byte[] data = Files.readAllBytes(file.toPath());
ByteArrayInputStream bais = new ByteArrayInputStream(data);
ObjectInputStream ois = new ObjectInputStream(bais);
NoConfig noConfig;
try {
noConfig = (NoConfig) ois.readObject();
} catch (ClassNotFoundException e) {
throw new NoDashFatalException("Given bytestream does not compile into a configuration object.");
}
return noConfig;
} catch (IOException e) {
throw new NoDashFatalException("Instructed to read config from file but unable to do so.");
}
}
}

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src/nodash/core/NoCore.java Normal file
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package nodash.core;
import java.io.File;
import java.security.PublicKey;
import nodash.core.spheres.NoByteSetSphere;
import nodash.core.spheres.NoHashSphere;
import nodash.core.spheres.NoSessionSphere;
import nodash.exceptions.NoDashSessionBadUUID;
import nodash.exceptions.NoSessionAlreadyAwaitingConfirmationException;
import nodash.exceptions.NoSessionConfirmedException;
import nodash.exceptions.NoSessionExpiredException;
import nodash.exceptions.NoSessionNotAwaitingConfirmationException;
import nodash.exceptions.NoSessionNotChangedException;
import nodash.exceptions.NoUserAlreadyOnlineException;
import nodash.exceptions.NoUserNotValidException;
import nodash.models.NoByteSet;
import nodash.models.NoUser;
import nodash.models.NoSession.NoState;
public final class NoCore {
public static NoConfig config;
public static void setup() {
File configFile = new File(NoConfig.CONFIG_FILENAME);
if (configFile.exists()) {
config = NoConfig.getNoConfigFromFile(configFile);
} else {
config = new NoConfig();
config.saveNoConfigToFile(configFile);
}
NoHashSphere.setup();
}
public static byte[] login(byte[] data, char[] password) throws NoUserNotValidException, NoUserAlreadyOnlineException, NoSessionExpiredException {
/* steps 1 through to pre-3 */
return NoSessionSphere.login(data, password);
}
public static NoRegister register(NoUser user, char[] password) {
/* Straight to step 4 */
return NoSessionSphere.registerUser(user, password);
}
public static NoUser getUser(byte[] cookie) throws NoSessionExpiredException, NoSessionConfirmedException, NoDashSessionBadUUID {
/* Facilitates step 3
* allow website-side modifications to the NoUser or NoUser inheritant */
return NoSessionSphere.getUser(cookie);
}
public static NoState getSessionState(byte[] cookie) throws NoSessionExpiredException, NoSessionConfirmedException, NoDashSessionBadUUID {
/* Facilitates step 3
* allow front-side to keep track of session state */
return NoSessionSphere.getState(cookie);
}
public static byte[] requestSave(byte[] cookie, char[] password) throws NoSessionExpiredException, NoSessionConfirmedException, NoSessionNotChangedException, NoSessionAlreadyAwaitingConfirmationException, NoDashSessionBadUUID {
/* Step 4. Provides a user with the new binary file */
return NoSessionSphere.save(cookie, password);
}
public static void confirm(byte[] cookie, char[] password, byte[] data) throws NoSessionExpiredException, NoSessionConfirmedException, NoSessionNotAwaitingConfirmationException, NoUserNotValidException, NoDashSessionBadUUID {
/* Step 5. Assumes the user has re-uploaded the file along with providing the same password.
* Further attempts of getUser or getSessionState will fail with a NoSessionExpiredException*/
NoSessionSphere.confirm(cookie, password, data);
}
public static void addByteSet(NoByteSet byteSet, PublicKey publicKey) {
NoByteSetSphere.add(byteSet, publicKey);
}
public static void shred(byte[] cookie) {
/* 3.2 Hot pull */
NoSessionSphere.shred(cookie);
}
public static void triggerPrune() {
NoSessionSphere.prune();
}
}

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src/nodash/core/NoRegister.java Normal file
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package nodash.core;
public final class NoRegister {
public byte[] cookie;
public byte[] data;
}

191
src/nodash/core/NoUtil.java Normal file
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package nodash.core;
import java.security.InvalidKeyException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.SecretKeySpec;
import nodash.exceptions.NoDashFatalException;
public final class NoUtil {
public static final String CIPHER_TYPE = "AES/ECB/PKCS5PADDING";
public static final String CIPHER_KEY_SPEC = "AES";
public static final String DIGEST_TYPE = "SHA-512";
public static final String PBE_TYPE = "PBKDF2WithHmacSHA1";
public static final String CIPHER_RSA_TYPE = "RSA/ECB/PKCS1PADDING";
public static final String KEYPAIR_ALGORITHM = "RSA";
public static final String SECURERANDOM_ALGORITHM = "SHA1PRNG";
public static final String SECURERANDOM_PROVIDER = "SUN";
public static final int RSA_STRENGTH = 4096;
public static final int AES_STRENGTH = 256;
public static final byte BLANK_BYTE = 'A';
public static char[] bytesToChars(byte[] array) {
char[] result = new char[array.length];
for (int x=0; x<array.length; x++) {
result[x] = (char) array[x];
}
return result;
}
public static byte[] charToBytes(char[] array) {
byte[] result = new byte[array.length];
for (int x=0; x<array.length; x++) {
result[x] = (byte) array[x];
}
return result;
}
public static void wipeBytes(byte[] array) {
for (int x=0; x<array.length; x++) {
array[x] = NoUtil.BLANK_BYTE;
}
}
public static void wipeChars(char[] array) {
for (int x=0; x<array.length; x++) {
array[x] = NoUtil.BLANK_BYTE;
}
}
public static byte[] getPBEKeyFromPassword(char[] password) {
SecretKeyFactory skf;
try {
skf = SecretKeyFactory.getInstance(NoUtil.PBE_TYPE);
} catch (NoSuchAlgorithmException e) {
throw new NoDashFatalException("Value for PBE_TYPE is not valid.");
}
KeySpec spec = new PBEKeySpec(password, NoCore.config.secretKey.getEncoded(), 65536, 256);
SecretKey key;
try {
key = skf.generateSecret(spec);
} catch (InvalidKeySpecException e) {
throw new NoDashFatalException("PBE manager unable to derive key from password.");
}
NoUtil.wipeChars(password);
return key.getEncoded();
}
public static byte[] getHashFromByteArray(byte[] bytes) {
try {
MessageDigest messageDigest = MessageDigest.getInstance(NoUtil.DIGEST_TYPE);
return messageDigest.digest(bytes);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return null;
}
public static byte[] decryptByteArray(byte[] data, char[] password) throws IllegalBlockSizeException, BadPaddingException {
byte[] passwordByte = NoUtil.getPBEKeyFromPassword(password);
byte[] response = NoUtil.decrypt(NoUtil.decrypt(data), passwordByte);
NoUtil.wipeBytes(passwordByte);
return response;
}
public static byte[] encryptByteArray(byte[] data, char[] password) {
byte[] passwordByte = NoUtil.getPBEKeyFromPassword(password);
byte[] response = NoUtil.encrypt(NoUtil.encrypt(data, passwordByte));
NoUtil.wipeBytes(passwordByte);
return response;
}
public static byte[] encrypt(byte[] data, byte[] key) {
Cipher cipher;
try {
cipher = Cipher.getInstance(NoUtil.CIPHER_TYPE);
} catch (NoSuchAlgorithmException e) {
throw new NoDashFatalException("Value for CIPHER_TYPE is not valid (no such algorithm).");
} catch (NoSuchPaddingException e) {
throw new NoDashFatalException("Value for CIPHER_TYPE is not valid (no such padding).");
}
SecretKeySpec secretKey = new SecretKeySpec(key, NoUtil.CIPHER_KEY_SPEC);
try {
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
} catch (InvalidKeyException e) {
throw new NoDashFatalException("Secret key is invalid.");
}
try {
return cipher.doFinal(data);
} catch (IllegalBlockSizeException e) {
throw new NoDashFatalException("Block size exception encountered during encryption.");
} catch (BadPaddingException e) {
throw new NoDashFatalException("Bad padding exception encountered during encryption.");
}
}
public static byte[] encrypt(byte[] data) {
return NoUtil.encrypt(data, NoCore.config.secretKey.getEncoded());
}
public static byte[] decrypt(byte[] data, byte[] key) throws IllegalBlockSizeException, BadPaddingException {
Cipher cipher;
try {
cipher = Cipher.getInstance(NoUtil.CIPHER_TYPE);
} catch (NoSuchAlgorithmException e) {
throw new NoDashFatalException("Value for CIPHER_TYPE is not valid (no such algorithm).");
} catch (NoSuchPaddingException e) {
throw new NoDashFatalException("Value for CIPHER_TYPE is not valid (no such padding).");
}
SecretKeySpec secretKey = new SecretKeySpec(key, NoUtil.CIPHER_KEY_SPEC);
try {
cipher.init(Cipher.DECRYPT_MODE, secretKey);
} catch (InvalidKeyException e) {
throw new NoDashFatalException("Secret key is invalid.");
}
return cipher.doFinal(data);
}
public static byte[] decrypt(byte[] data) throws IllegalBlockSizeException, BadPaddingException {
return NoUtil.decrypt(data, NoCore.config.secretKey.getEncoded());
}
public static byte[] encryptRSA(byte[] data, PublicKey publicKey) {
Cipher cipher;
try {
cipher = Cipher.getInstance(NoUtil.CIPHER_RSA_TYPE);
} catch (NoSuchAlgorithmException e) {
throw new NoDashFatalException("Value for CIPHER_RSA_TYPE is not valid (no such algorithm).");
} catch (NoSuchPaddingException e) {
throw new NoDashFatalException("Value for CIPHER_RSA_TYPE is not valid (no such padding).");
}
try {
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
return cipher.doFinal(data);
} catch (InvalidKeyException e){
throw new NoDashFatalException("Public key invalid.");
} catch (IllegalBlockSizeException e) {
throw new NoDashFatalException("Unable to encrypt data stream with public key.");
} catch (BadPaddingException e) {
throw new NoDashFatalException("Unable to encrypt data stream with public key.");
}
}
public static byte[] decryptRSA(byte[] data, PrivateKey privateKey) throws InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
Cipher cipher;
try {
cipher = Cipher.getInstance(NoUtil.CIPHER_RSA_TYPE);
} catch (NoSuchAlgorithmException e) {
throw new NoDashFatalException("Value for CIPHER_RSA_TYPE is not valid (no such algorithm).");
} catch (NoSuchPaddingException e) {
throw new NoDashFatalException("Value for CIPHER_RSA_TYPE is not valid (no such padding).");
}
cipher.init(Cipher.DECRYPT_MODE, privateKey);
return cipher.doFinal(data);
}
}

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src/nodash/core/spheres/NoByteSetSphere.java Normal file
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package nodash.core.spheres;
import java.security.PublicKey;
import java.util.ArrayList;
import java.util.concurrent.ConcurrentHashMap;
import nodash.models.NoByteSet;
import nodash.models.NoUser;
public final class NoByteSetSphere {
private static final ArrayList<NoByteSet> EMPTY_BYTESET_LIST = new ArrayList<NoByteSet>(0);
private static ConcurrentHashMap<PublicKey, ArrayList<NoByteSet>> byteSets = new ConcurrentHashMap<PublicKey, ArrayList<NoByteSet>>();
public static void add(NoByteSet byteSet, PublicKey publicKey) {
if (!NoByteSetSphere.byteSets.containsKey(publicKey)) {
NoByteSetSphere.byteSets.put(publicKey, new ArrayList<NoByteSet>());
}
NoByteSetSphere.byteSets.get(publicKey).add(byteSet);
}
public static void addList(ArrayList<NoByteSet> byteSetList, PublicKey publicKey) {
if (!NoByteSetSphere.byteSets.containsKey(publicKey)) {
NoByteSetSphere.byteSets.put(publicKey, new ArrayList<NoByteSet>());
}
NoByteSetSphere.byteSets.get(publicKey).addAll(byteSetList);
}
public static ArrayList<NoByteSet> consume(NoUser user) {
if (NoByteSetSphere.byteSets.containsKey(user.getRSAPublicKey())) {
ArrayList<NoByteSet> result = NoByteSetSphere.byteSets.get(user.getRSAPublicKey());
NoByteSetSphere.byteSets.remove(user.getRSAPublicKey());
return result;
} else {
return NoByteSetSphere.EMPTY_BYTESET_LIST;
}
}
}

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src/nodash/core/spheres/NoHashSphere.java Normal file
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package nodash.core.spheres;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.nio.file.Files;
import java.nio.file.StandardOpenOption;
import java.util.Collections;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import nodash.core.NoCore;
import nodash.exceptions.NoDashFatalException;
import nodash.models.NoUser;
public final class NoHashSphere {
private static Set<String> database = Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>());
@SuppressWarnings("unchecked")
public static void setup() {
if (NoCore.config.saveDatabase) {
File file = new File(NoCore.config.databaseFilename);
if (file.exists()) {
try {
byte[] data = Files.readAllBytes(file.toPath());
ByteArrayInputStream bais = new ByteArrayInputStream(data);
ObjectInputStream ois = new ObjectInputStream(bais);
NoHashSphere.database = (Set<String>) ois.readObject();
ois.close();
bais.close();
} catch (IOException e){
throw new NoDashFatalException("Unable to load up given database file.");
} catch (ClassNotFoundException e) {
throw new NoDashFatalException("Database file not in a verifiable format.");
}
}
}
}
public static synchronized void saveToFile() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(NoHashSphere.database);
byte[] data = baos.toByteArray();
oos.close();
baos.close();
File file = new File(NoCore.config.databaseFilename);
Files.write(file.toPath(), data, StandardOpenOption.CREATE);
}
public static synchronized void addNewNoUser(NoUser user) throws IOException {
String hash = user.createHashString();
NoHashSphere.database.add(hash);
NoHashSphere.saveToFile();
}
public static synchronized void insertHash(String hash) throws IOException {
NoHashSphere.database.add(hash);
NoHashSphere.saveToFile();
}
public static synchronized void removeHash(String hash) throws IOException {
NoHashSphere.database.remove(hash);
NoHashSphere.saveToFile();
}
public static synchronized boolean checkHash(String hash) {
return NoHashSphere.database.contains(hash);
}
public static synchronized int size() {
return NoHashSphere.database.size();
}
}

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src/nodash/core/spheres/NoSessionSphere.java Normal file
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package nodash.core.spheres;
import java.util.Collections;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import nodash.core.NoRegister;
import nodash.exceptions.NoByteSetBadDecryptionException;
import nodash.exceptions.NoDashFatalException;
import nodash.exceptions.NoDashSessionBadUUID;
import nodash.exceptions.NoSessionAlreadyAwaitingConfirmationException;
import nodash.exceptions.NoSessionConfirmedException;
import nodash.exceptions.NoSessionExpiredException;
import nodash.exceptions.NoSessionNotAwaitingConfirmationException;
import nodash.exceptions.NoSessionNotChangedException;
import nodash.exceptions.NoUserAlreadyOnlineException;
import nodash.exceptions.NoUserNotValidException;
import nodash.models.NoByteSet;
import nodash.models.NoSession;
import nodash.models.NoUser;
import nodash.models.NoSession.NoState;
public final class NoSessionSphere {
private static ConcurrentHashMap<UUID, NoSession> sessions = new ConcurrentHashMap<UUID, NoSession>();
private static Set<byte[]> originalHashesOnline = Collections.newSetFromMap(new ConcurrentHashMap<byte[], Boolean>());
public static synchronized void prune() {
for (UUID uuid : NoSessionSphere.sessions.keySet()) {
pruneSingle(uuid);
}
}
public static void shred(byte[] encryptedUUID) {
try {
UUID uuid = NoSession.decryptUUID(encryptedUUID);
if (NoSessionSphere.sessions.containsKey(uuid)) {
NoSession session = NoSessionSphere.sessions.get(uuid);
NoByteSetSphere.addList(session.incoming, session.current.getRSAPublicKey());
NoSessionSphere.originalHashesOnline.remove(session.getOriginalHash());
NoSessionSphere.sessions.remove(uuid);
session = null;
}
} catch (NoDashSessionBadUUID e) {
// Suppress, doesn't matter
}
}
public static synchronized void pruneSingle(UUID uuid) {
NoSession session = NoSessionSphere.sessions.get(uuid);
try {
session.check();
} catch (NoSessionExpiredException e) {
/* Resultant from 3.1 and 3.2 */
NoByteSetSphere.addList(session.incoming, session.current.getRSAPublicKey());
NoSessionSphere.originalHashesOnline.remove(session.getOriginalHash());
NoSessionSphere.sessions.remove(uuid);
session = null;
} catch (NoSessionConfirmedException e) {
/* Should be cleaned up at 5.2 */
}
}
public static synchronized byte[] login(byte[] data, char[] password) throws NoUserNotValidException, NoUserAlreadyOnlineException, NoSessionExpiredException {
/* 1. Login with byte[] data and byte[] password */
NoSession session = new NoSession(data, password);
/* 1.1. User currently has an online session, must wait for it to expire. */
if (originalHashesOnline.contains(session.getOriginalHash())) {
throw new NoUserAlreadyOnlineException();
}
/* 1.2. User successfully logged in: set up session records. */
NoSessionSphere.originalHashesOnline.add(session.getOriginalHash());
NoSessionSphere.sessions.put(session.uuid, session);
/* 2. Check NoByteSetSphere for incoming Influences */
session.incoming = NoByteSetSphere.consume(session.current);
for (NoByteSet nbs : session.incoming) {
/* 2.1 Decrypt NoInfluence from NoByteSet, let the current user consume them */
try {
session.consume(nbs);
} catch (NoByteSetBadDecryptionException e) {
e.printStackTrace();
}
} /* 2.2 Alternatively, no NoByteSets to consume */
try {
session.check();
} catch (NoSessionConfirmedException e) {
/* Should be impossible to reach */
throw new NoDashFatalException(e);
}
/* Will set to 2.1[MODIFIED] or 2.2[IDLE] */
/* Precursor to 3.; allow website to associate user session with a cookie. */
return session.getEncryptedUUID();
}
public static NoUser getUser(byte[] encryptedUUID) throws NoDashSessionBadUUID, NoSessionExpiredException, NoSessionConfirmedException {
UUID uuid = NoSession.decryptUUID(encryptedUUID);
if (NoSessionSphere.sessions.containsKey(uuid)) {
NoSessionSphere.pruneSingle(uuid);
return NoSessionSphere.sessions.get(uuid).getNoUser();
}
throw new NoSessionExpiredException();
}
public static NoState getState(byte[] encryptedUUID) throws NoDashSessionBadUUID, NoSessionExpiredException, NoSessionConfirmedException {
UUID uuid = NoSession.decryptUUID(encryptedUUID);
if (NoSessionSphere.sessions.containsKey(uuid)) {
NoSessionSphere.pruneSingle(uuid);
NoSession session = NoSessionSphere.sessions.get(uuid);
return session.getNoState();
}
throw new NoSessionExpiredException();
}
public static synchronized byte[] save(byte[] encryptedUUID, char[] password) throws NoDashSessionBadUUID, NoSessionExpiredException, NoSessionConfirmedException, NoSessionNotChangedException, NoSessionAlreadyAwaitingConfirmationException {
UUID uuid = NoSession.decryptUUID(encryptedUUID);
if (NoSessionSphere.sessions.containsKey(uuid)) {
NoSessionSphere.pruneSingle(uuid);
NoSession session = NoSessionSphere.sessions.get(uuid);
if (session.getNoState().equals(NoState.IDLE)) {
throw new NoSessionNotChangedException();
} else if (session.getNoState().equals(NoState.AWAITING_CONFIRMATION)) {
throw new NoSessionAlreadyAwaitingConfirmationException();
}
return session.initiateSaveAttempt(password);
}
throw new NoSessionExpiredException();
}
public static synchronized void confirm(byte[] encryptedUUID, char[] password, byte[] data) throws NoDashSessionBadUUID, NoSessionExpiredException, NoSessionConfirmedException, NoSessionNotAwaitingConfirmationException, NoUserNotValidException {
UUID uuid = NoSession.decryptUUID(encryptedUUID);
if (NoSessionSphere.sessions.containsKey(uuid)) {
NoSessionSphere.pruneSingle(uuid);
NoSession session = NoSessionSphere.sessions.get(uuid);
session.confirmSave(data, password);
return;
}
throw new NoSessionExpiredException();
}
public static synchronized NoRegister registerUser(NoUser user, char[] password) {
NoRegister result = new NoRegister();
NoSession session = new NoSession(user);
NoSessionSphere.sessions.put(session.uuid, session);
result.cookie = session.getEncryptedUUID();
try {
result.data = NoSessionSphere.save(result.cookie, password);
} catch (NoDashSessionBadUUID e) {
throw new NoDashFatalException("Immediately generated cookie throwing bad cookie error.");
} catch (NoSessionExpiredException e) {
throw new NoDashFatalException("Session expired before it was even returned to client.");
} catch (NoSessionConfirmedException e) {
throw new NoDashFatalException("Session is in confirmed state before it was returned to client.");
} catch (NoSessionNotChangedException e) {
throw new NoDashFatalException("Session claims to be unchanged but user is newly registered.");
} catch (NoSessionAlreadyAwaitingConfirmationException e) {
throw new NoDashFatalException("Session claims to be awaiting confirmation before returning data to the user.");
}
return result;
}
}