/**
* Generates a random secret key using the algorithm specified in the first DataReference URI
*
* @param dataRefURIs
* @param doc
* @param wsDocInfo
* @return
* @throws WSSecurityException
*/
private static byte[] getRandomKey(List<String> dataRefURIs, Document doc, WSDocInfo wsDocInfo)
throws WSSecurityException {
try {
String alg = "AES";
int size = 16;
if (!dataRefURIs.isEmpty()) {
String uri = dataRefURIs.iterator().next();
Element ee = ReferenceListProcessor.findEncryptedDataElement(doc, uri);
String algorithmURI = X509Util.getEncAlgo(ee);
alg = JCEMapper.getJCEKeyAlgorithmFromURI(algorithmURI);
size = WSSecurityUtil.getKeyLength(algorithmURI);
}
KeyGenerator kgen = KeyGenerator.getInstance(alg);
kgen.init(size * 8);
SecretKey k = kgen.generateKey();
return k.getEncoded();
} catch (Throwable ex) {
// Fallback to just using AES to avoid attacks on EncryptedData algorithms
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128);
SecretKey k = kgen.generateKey();
return k.getEncoded();
} catch (NoSuchAlgorithmException e) {
throw new WSSecurityException(WSSecurityException.FAILED_CHECK, null, null, e);
}
}
}
public boolean shareAESkey() {
try {
Envelope message = null, e = null;
// Generate AES key
KeyGenerator keyGen = KeyGenerator.getInstance("AES");
AESkey = keyGen.generateKey();
keyGen = KeyGenerator.getInstance("HmacSHA1");
HMACkey = keyGen.generateKey();
byte[] keyBytes = AESkey.getEncoded();
byte[] hashBytes = HMACkey.getEncoded();
System.out.println("AES key generated");
System.out.println("HMAC key generated");
System.out.println("Begin Encryption...");
// Encrypt message w/ provided public key
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(Cipher.ENCRYPT_MODE, pubKey);
byte[] cipherBytes = cipher.doFinal(keyBytes);
byte[] cipherBytes1 = cipher.doFinal(hashBytes);
System.out.println("Encryption Complete");
message = new Envelope("SKEY");
message.addObject(cipherBytes); // Add AESkey to message
message.addObject(cipherBytes1);
message.addObject(nonce);
nonce++;
byte[] messageBytes = Envelope.toByteArray(message);
output.writeObject(messageBytes);
byte[] inCipherBytes = (byte[]) input.readObject();
// Decrypt response
cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, AESkey);
byte[] responseBytes = cipher.doFinal(inCipherBytes);
Envelope response = Envelope.getEnvelopefromBytes(responseBytes);
// If server indicates success, return the member list
if (response.getMessage().equals("OK")
&& (Integer) response.getObjContents().get(0) == nonce) {
return true;
} else {
return false;
}
} catch (Exception e) {
System.err.println("Error: " + e.getMessage());
e.printStackTrace(System.err);
return false;
}
}
/** Generate the AES file key for encrypting files */
private void genAESFileKey() {
try {
// randomly generate a 64-bit string, used for generating the AES key
char[] chars = "abcdefghijklmnopqrstuvwxyz0123456789".toCharArray();
StringBuilder sb = new StringBuilder();
Random randomString = new Random();
for (int i = 0; i < 64; i++) {
char c = chars[randomString.nextInt(chars.length)];
sb.append(c);
}
aesFileString = sb.toString();
// System.out.println("AES file String: " + aesFileString);
KeyGenerator keygen = KeyGenerator.getInstance("AES");
SecureRandom random = new SecureRandom(aesFileString.getBytes());
keygen.init(256, random);
aesFileKey = keygen.generateKey();
// System.out.println("AES file key: " + aesFileKey);
} catch (Exception e) {
System.out.println("Failed to generate DES key for encrypting files!\n" + e.toString());
}
}
private static void _initKeys() {
ClassLoader classLoader = ClassLoaderUtil.getPortalClassLoader();
if ((classLoader == null) || (_encryptedSymmetricKey != null)) {
return;
}
try {
URL url = classLoader.getResource("com/liferay/portal/license/public.key");
byte[] bytes = IOUtils.toByteArray(url.openStream());
X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(bytes);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
keyGenerator.init(128, new SecureRandom());
_symmetricKey = keyGenerator.generateKey();
byte[] encryptedSymmetricKey =
Encryptor.encryptUnencoded(publicKey, _symmetricKey.getEncoded());
_encryptedSymmetricKey = Base64.objectToString(encryptedSymmetricKey);
} catch (Exception e) {
_log.error(e, e);
}
}
/**
* Generate a new MWK
*
* @return Hex String of the new encrypted MWK ready for transmission to ValueLink
*/
public byte[] generateMwk() {
KeyGenerator keyGen = null;
try {
keyGen = KeyGenerator.getInstance("DES");
} catch (NoSuchAlgorithmException e) {
Debug.logError(e, module);
}
// generate the DES key 1
SecretKey des1 = keyGen.generateKey();
SecretKey des2 = keyGen.generateKey();
if (des1 != null && des2 != null) {
byte[] desByte1 = des1.getEncoded();
byte[] desByte2 = des2.getEncoded();
byte[] desByte3 = des1.getEncoded();
// check for weak keys
try {
if (DESKeySpec.isWeak(des1.getEncoded(), 0) || DESKeySpec.isWeak(des2.getEncoded(), 0)) {
return generateMwk();
}
} catch (Exception e) {
Debug.logError(e, module);
}
byte[] des3 = copyBytes(desByte1, copyBytes(desByte2, desByte3, 0), 0);
return generateMwk(des3);
} else {
Debug.logInfo("Null DES keys returned", module);
}
return null;
}
public void readConfig() throws Exception {
// debugging aspect
if (ds().getProperty("debug", "false").equalsIgnoreCase("true")) {
LOG.debug_on();
LOG.info("working directory = " + System.getProperty("user.dir"));
}
Iterator<String> it = ds().iterator();
while (it.hasNext()) {
String key = it.next();
String value = ds().getProperty(key);
LOG.info(key + "=" + value);
}
name = ds().getProperty("name", "anonymous");
// each agent has its own symmetric key cipher
// TODO: test with other algo than AES
KeyGenerator keyGen = KeyGenerator.getInstance(this.ds().getProperty("cypher.algo", "AES"));
keyGen.init(Integer.parseInt(this.ds().getProperty("cipher.keysize", "128")));
secretKey = keyGen.generateKey();
cipher = Cipher.getInstance(this.ds().getProperty("cipher.algo", "AES"));
// user cipher
byte[] salt = {1, 1, 1, 2, 2, 2, 3, 3};
int count = 20;
userParamSpec = new PBEParameterSpec(salt, count);
}
private static byte[] getRawKey(byte[] seed) throws Exception {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
sr.setSeed(seed);
kgen.init(128, sr); // 192 and 256 bits may not be available
return kgen.generateKey().getEncoded();
}
/**
* This method broadcasts a payload onto the given topic.
*
* @param topic the topic to broadcast onto
* @param visibility the visibility of the message
* @param payload the payload of the message
*/
public void broadcast(String topic, Visibility visibility, byte[] payload) throws IOException {
byte[] payloadToSend = payload;
SecureMessage message = new SecureMessage();
message.setVisibility(visibility);
if (isProduction) {
try {
// Generate a new symmetric key and encrypt the message
Cipher cipher = Cipher.getInstance(ALGO);
KeyGenerator gen = KeyGenerator.getInstance(ALGO);
gen.init(256);
SecretKey key = gen.generateKey();
cipher.init(Cipher.ENCRYPT_MODE, key);
payloadToSend = cipher.doFinal(payload);
// Get topic crypto object, encrypt the key and embed it into the message
RSAKeyCrypto crypto = topicKeys.get(topic);
message.setKey(crypto.encrypt(key.getEncoded()));
} catch (Exception e) {
log.error("Could not encrypt message for topic [{}].", topic, e);
throw new RuntimeException(e);
}
}
message.setContent(payloadToSend);
byte[] serializedMessage;
try {
serializedMessage = ThriftUtils.serialize(message);
} catch (TException e) {
throw new IOException("Could not serialize message", e);
}
broadcastImpl(topic, serializedMessage);
}
private void testCipherNameWithWrap(String name, String simpleName) throws Exception {
KeyGenerator kg = KeyGenerator.getInstance("AES");
kg.init(new SecureRandom());
SecretKey key = kg.generateKey();
byte[] salt = {
(byte) 0xc7, (byte) 0x73, (byte) 0x21, (byte) 0x8c,
(byte) 0x7e, (byte) 0xc8, (byte) 0xee, (byte) 0x99
};
char[] password = {'p', 'a', 's', 's', 'w', 'o', 'r', 'd'};
PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20);
PBEKeySpec pbeKeySpec = new PBEKeySpec(password);
SecretKeyFactory keyFac = SecretKeyFactory.getInstance(name);
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
Cipher pbeEncryptCipher = Cipher.getInstance(name, "SC");
pbeEncryptCipher.init(Cipher.WRAP_MODE, pbeKey, pbeParamSpec);
byte[] symKeyBytes = pbeEncryptCipher.wrap(key);
Cipher simpleCipher = Cipher.getInstance(simpleName, "SC");
simpleCipher.init(Cipher.UNWRAP_MODE, pbeKey, pbeParamSpec);
SecretKey unwrappedKey = (SecretKey) simpleCipher.unwrap(symKeyBytes, "AES", Cipher.SECRET_KEY);
if (!Arrays.areEqual(unwrappedKey.getEncoded(), key.getEncoded())) {
fail("key mismatch on unwrapping");
}
}
private static byte[] key(final byte[] key) throws Exception {
final KeyGenerator gen = KeyGenerator.getInstance(ALGORITHM);
final SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
sr.setSeed(key);
gen.init(128, sr);
return gen.generateKey().getEncoded();
}
/** Generates secret key. Initializes MAC(s). */
private void setupKeyAndMac() {
/*
* Lets see if an encoded key was given to the application, if so use
* it and skip the code to generate it.
*/
try {
InitialContext context = new InitialContext();
String encodedKeyArray = (String) context.lookup("java:comp/env/jsf/ClientSideSecretKey");
byte[] keyArray = DatatypeConverter.parseBase64Binary(encodedKeyArray);
sk = new SecretKeySpec(keyArray, KEY_ALGORITHM);
} catch (NamingException exception) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.log(Level.FINEST, "Unable to find the encoded key.", exception);
}
}
if (sk == null) {
try {
KeyGenerator kg = KeyGenerator.getInstance(KEY_ALGORITHM);
kg.init(KEY_LENGTH); // 256 if you're using the Unlimited Policy Files
sk = kg.generateKey();
// System.out.print("SecretKey: " +
// DatatypeConverter.printBase64Binary(sk.getEncoded()));
} catch (Exception e) {
throw new FacesException(e);
}
}
}
/**
* 加密
*
* @param content 需要加密的内容
* @param password 加密密码
* @return
*/
public static byte[] encryptAES(String content, String password) {
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(password.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES"); // 创建密码器
byte[] byteContent = content.getBytes("utf-8");
cipher.init(Cipher.ENCRYPT_MODE, key); // 初始化
byte[] result = cipher.doFinal(byteContent);
return result; // 加密
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
public static void main(String[] args) throws Exception {
//
// check args and get plaintext
if (args.length != 1) {
System.err.println("Usage: java MessageAuthenticationCodeExample text");
System.exit(1);
}
byte[] plainText = args[0].getBytes("UTF8");
//
// get a key for the HmacMD5 algorithm
System.out.println("\nStart generating key");
KeyGenerator keyGen = KeyGenerator.getInstance("HmacMD5");
SecretKey MD5key = keyGen.generateKey();
System.out.println("Finish generating key");
//
// get a MAC object and update it with the plaintext
Mac mac = Mac.getInstance("HmacMD5");
mac.init(MD5key);
mac.update(plainText);
//
// print out the provider used and the MAC
System.out.println("\n" + mac.getProvider().getInfo());
System.out.println("\nMAC: ");
System.out.println(new String(mac.doFinal(), "UTF8"));
}
private DERObject createDERForRecipient(byte[] in, X509Certificate cert)
throws IOException, GeneralSecurityException {
String s = "1.2.840.113549.3.2";
AlgorithmParameterGenerator algorithmparametergenerator =
AlgorithmParameterGenerator.getInstance(s);
AlgorithmParameters algorithmparameters = algorithmparametergenerator.generateParameters();
ByteArrayInputStream bytearrayinputstream =
new ByteArrayInputStream(algorithmparameters.getEncoded("ASN.1"));
ASN1InputStream asn1inputstream = new ASN1InputStream(bytearrayinputstream);
DERObject derobject = asn1inputstream.readObject();
KeyGenerator keygenerator = KeyGenerator.getInstance(s);
keygenerator.init(128);
SecretKey secretkey = keygenerator.generateKey();
Cipher cipher = Cipher.getInstance(s);
cipher.init(1, secretkey, algorithmparameters);
byte[] abyte1 = cipher.doFinal(in);
DEROctetString deroctetstring = new DEROctetString(abyte1);
KeyTransRecipientInfo keytransrecipientinfo =
computeRecipientInfo(cert, secretkey.getEncoded());
DERSet derset = new DERSet(new RecipientInfo(keytransrecipientinfo));
AlgorithmIdentifier algorithmidentifier =
new AlgorithmIdentifier(new DERObjectIdentifier(s), derobject);
EncryptedContentInfo encryptedcontentinfo =
new EncryptedContentInfo(PKCSObjectIdentifiers.data, algorithmidentifier, deroctetstring);
EnvelopedData env = new EnvelopedData(null, derset, encryptedcontentinfo, null);
ContentInfo contentinfo = new ContentInfo(PKCSObjectIdentifiers.envelopedData, env);
return contentinfo.getDERObject();
}
private void oidTest() {
String[] oids = {
CryptoProObjectIdentifiers.gostR28147_gcfb.getId(),
};
String[] names = {"GOST28147/GCFB/NoPadding"};
try {
byte[] data = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
IvParameterSpec ivSpec = new IvParameterSpec(new byte[8]);
for (int i = 0; i != oids.length; i++) {
Cipher c1 = Cipher.getInstance(oids[i], "BC");
Cipher c2 = Cipher.getInstance(names[i], "BC");
KeyGenerator kg = KeyGenerator.getInstance(oids[i], "BC");
SecretKey k = kg.generateKey();
c1.init(Cipher.ENCRYPT_MODE, k, ivSpec);
c2.init(Cipher.DECRYPT_MODE, k, ivSpec);
byte[] result = c2.doFinal(c1.doFinal(data));
if (!areEqual(data, result)) {
fail("failed OID test");
}
}
} catch (Exception ex) {
fail("failed exception " + ex.toString(), ex);
}
}
public static Message encrypt(PublicKey pubKey, byte[] input) throws CryptoException {
Message message = new Message();
message.pubKey = pubKey.getEncoded();
KeyGenerator keyGen;
try {
keyGen = KeyGenerator.getInstance("AES");
} catch (NoSuchAlgorithmException e) {
throw new CryptoException(e);
}
keyGen.init(128);
SecretKey secretKey = keyGen.generateKey();
try {
Cipher rsaCipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
rsaCipher.init(Cipher.ENCRYPT_MODE, pubKey);
message.sessionKey = rsaCipher.doFinal(secretKey.getEncoded());
Cipher aesCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
aesCipher.init(Cipher.ENCRYPT_MODE, secretKey);
AlgorithmParameters params = aesCipher.getParameters();
message.iv = params.getParameterSpec(IvParameterSpec.class).getIV();
message.ciphertext = aesCipher.doFinal(input);
} catch (NoSuchAlgorithmException
| NoSuchPaddingException
| InvalidKeyException
| IllegalBlockSizeException
| BadPaddingException
| InvalidParameterSpecException e) {
throw new CryptoException(e);
}
return message;
}
protected String decrypt(String content, String key) {
if (content.length() < 1) return null;
byte[] byteRresult = new byte[content.length() / 2];
for (int i = 0; i < content.length() / 2; i++) {
int high = Integer.parseInt(content.substring(i * 2, i * 2 + 1), 16);
int low = Integer.parseInt(content.substring(i * 2 + 1, i * 2 + 2), 16);
byteRresult[i] = (byte) (high * 16 + low);
}
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(key.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
byte[] result = cipher.doFinal(byteRresult);
return new String(result);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
protected String encrypt(String content, String key) {
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(key.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");
byte[] byteContent = content.getBytes("utf-8");
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
byte[] byteRresult = cipher.doFinal(byteContent);
StringBuffer sb = new StringBuffer();
for (int i = 0; i < byteRresult.length; i++) {
String hex = Integer.toHexString(byteRresult[i] & 0xFF);
if (hex.length() == 1) {
hex = '0' + hex;
}
sb.append(hex.toUpperCase());
}
return sb.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
/**
* Generate key encryption key.
*
* @return the secret key
* @throws Exception the exception
*/
public static SecretKey generateKeyEncryptionKey() throws Exception {
String jceAlgorithmName = "DESede";
KeyGenerator keyGenerator = KeyGenerator.getInstance(jceAlgorithmName);
SecretKey kek = keyGenerator.generateKey();
return kek;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Bitmap bm = null;
bm.compress(Bitmap.CompressFormat.PNG, 100, baos); // bm is the bitmap object
byte[] b = baos.toByteArray();
byte[] keyStart = "this is a key".getBytes();
KeyGenerator kgen;
try {
kgen = KeyGenerator.getInstance("AES");
SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
sr.setSeed(keyStart);
kgen.init(128, sr); // 192 and 256 bits may not be available
SecretKey skey = kgen.generateKey();
byte[] key = skey.getEncoded();
// encrypt
byte[] encryptedData = encrypt(key, b);
// decrypt
byte[] decryptedData = decrypt(key, encryptedData);
} catch (NoSuchAlgorithmException e) {
// TODO 自動產生的 catch 區塊
e.printStackTrace();
} catch (Exception e) {
// TODO 自動產生的 catch 區塊
e.printStackTrace();
}
}
private static byte[] doAes(int mode, byte[] input, String password) {
try {
KeyGenerator keygen = KeyGenerator.getInstance(AES_ALGORITHM_NAME);
keygen.init(128, new SecureRandom(password.getBytes()));
SecretKey secretKey = keygen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, AES_ALGORITHM_NAME);
Cipher cipher = Cipher.getInstance(AES_ALGORITHM_NAME);
cipher.init(Cipher.DECRYPT_MODE, key);
return cipher.doFinal(input);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
/** @see de.freese.base.security.codec.pbe.AbstractCryptoCodecPBE#createKey(int) */
@Override
public Key createKey(final int keySize) throws GeneralSecurityException {
KeyGenerator keyGenerator = KeyGenerator.getInstance("AES", getProviderKey());
keyGenerator.init(keySize);
Key key = keyGenerator.generateKey();
return key;
}
private byte[] genKey() {
if (!isInited) {
init();
}
// 首先 生成一个密钥(SecretKey),
// 然后,通过这个秘钥,返回基本编码格式的密钥，如果此密钥不支持编码，则返回 null。
return keyGen.generateKey().getEncoded();
}
public String createKey() throws NoSuchAlgorithmException, NoSuchProviderException {
KeyGenerator keygen = KeyGenerator.getInstance("AES", "BC");
keygen.init(256);
Key key = keygen.generateKey();
return Base64.encodeBase64String(key.getEncoded());
}
// Generate Random Key
static Key makeKey(int keyBit) throws NoSuchAlgorithmException {
KeyGenerator kg = KeyGenerator.getInstance("AES");
SecureRandom rd = SecureRandom.getInstance("SHA1PRNG");
kg.init(keyBit, rd);
Key key = kg.generateKey();
return key;
} // makeKey
public static void setKeyCode() {
try {
KeyGenerator keygen = KeyGenerator.getInstance("DES");
SecretKey deskey = keygen.generateKey();
keyCode = baseEncode(deskey.getEncoded());
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
// Gen Key
KeyGenerator keyGenerator = KeyGenerator.getInstance("DES");
SecretKey key = keyGenerator.generateKey();
bytesKey = key.getEncoded();
jdkDES();
bcDES();
}
static {
try {
KeyGenerator generator = KeyGenerator.getInstance("AES");
key = generator.generateKey();
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private byte[] getRawKey(byte[] seed) throws NoSuchAlgorithmException {
KeyGenerator kgen = KeyGenerator.getInstance(PASS_ALGO);
SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
sr.setSeed(seed);
kgen.init(128, sr);
SecretKey skey = kgen.generateKey();
byte[] raw = skey.getEncoded();
return raw;
}
static {
try {
KeyGenerator kg = KeyGenerator.getInstance(algorithm);
kg.init(keyLen, new SecureRandom());
cipherKey = kg.generateKey();
} catch (Exception e) {
fail("No key " + e);
}
}