Example usage for java.security SecureRandom nextBytes

Introduction

In this page you can find the example usage for java.security SecureRandom nextBytes.

Prototype

@Override
public void nextBytes(byte[] bytes) 

Source Link

Document

Generates a user-specified number of random bytes.

Usage

From source file:com.azaptree.services.security.domain.config.impl.HashServiceConfig.java

@Override
public HashService getHashService() {
    if (hashService != null) {
        return hashService;
    }//from   w  w  w .  jav  a2  s .  c om
    final DefaultHashService service = new DefaultHashService();
    service.setGeneratePublicSalt(true);
    service.setPrivateSalt(ByteSource.Util.bytes(privateSalt));
    service.setHashAlgorithmName(hashAlgorithmName);
    service.setHashIterations(hashIterations);

    final SecureRandomNumberGenerator rng = new SecureRandomNumberGenerator();
    rng.setDefaultNextBytesSize(secureRandomNumberGeneratorNextBytesSize);
    final SecureRandom random = new SecureRandom();
    final byte rngSeed[] = new byte[20];
    random.nextBytes(rngSeed);
    rng.setSeed(rngSeed);

    service.setRandomNumberGenerator(rng);
    hashService = service;
    return service;
}

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From source file:plbtw.klmpk.barang.hilang.controller.DeveloperController.java

@RequestMapping(method = RequestMethod.PUT, produces = "application/json")
public CustomResponseMessage updateDeveloper(@RequestBody DeveloperRequest developerRequest) {
    try {//w  w  w  .  ja  v  a2 s  .  c o  m
        Developer developerUpdate = developerService.getDeveloper(developerRequest.getIdDeveloper());
        SecureRandom random = new SecureRandom();
        byte bytes[] = new byte[20];
        random.nextBytes(bytes);
        String token = bytes.toString();
        developerUpdate.setToken(token);
        developerUpdate.setEmail(developerRequest.getEmail());
        developerUpdate.setPassword(developerRequest.getPassword());
        developerService.updateDeveloper(developerUpdate);
        return new CustomResponseMessage(HttpStatus.CREATED, "Update Developer successfuly");
    } catch (Exception ex) {
        return new CustomResponseMessage(HttpStatus.BAD_REQUEST, ex.toString());
    }
}

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From source file:com.cfs.util.AESCriptografia.java

public String gerarSalt() {
    /* Tamanho do buffer do Salt */
    final int SALT_LENGTH = 16;
    /* Criao do buffer do Salt */
    byte[] salt = new byte[SALT_LENGTH];
    /* Criao do gerador de Salt */
    SecureRandom aleatorio = new SecureRandom();
    /* Gerao de um Salt aleatrio */
    aleatorio.nextBytes(salt);
    /* Encoda o salt gerado */
    String retorno = Base64.encodeBase64String(salt);
    /* Retorna o salt gerado */
    return retorno;
}

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From source file:org.gluu.com.ox_push2.u2f.v2.cert.KeyPairGeneratorImpl.java

@Override
public byte[] generateKeyHandle() {
    SecureRandom random = new SecureRandom();
    byte[] keyHandle = new byte[64];
    random.nextBytes(keyHandle);

    return keyHandle;
}

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From source file:ubicrypt.core.UtilsTest.java

@Test
public void readIs() throws Exception {
    final SecureRandom rnd = new SecureRandom();
    rnd.setSeed(System.currentTimeMillis());
    final byte[] key = new byte[3 * (1 << 16)];
    rnd.nextBytes(key);

    final Path path = Files.createTempFile(TestUtils.tmp, "a", "b");
    Utils.write(path, new ByteArrayInputStream(key)).toBlocking().last();

    final byte[] bytes = IOUtils.toByteArray(Utils.readIs(path));
    final byte[] bytes2 = IOUtils.toByteArray(Files.newInputStream(path));
    assertThat(bytes.length).isEqualTo(bytes2.length);
    for (int i = 0; i < bytes.length; i++) {
        assertThat(bytes[i]).isEqualTo(bytes2[i]);
    }//w  ww .j av a 2  s .  co m
}

---

From source file:org.wso2.carbon.identity.sso.saml.builders.ArtifactMessageBuilder.java

/**
 * Build the SAML V2.0 Artifact type of Type Code 0x0004
 * Artifact length : 44 bytes//  w w  w  .ja  v a  2s  .  c  o  m
 *
 * SAML V2.0 defines an artifact type of type code 0x0004
 * Identification:urn:oasis:names:tc:SAML:2.0:artifact-04
 *
 * SAML_artifact := B64(TypeCode EndpointIndex RemainingArtifact)
 * TypeCode := Byte1Byte2
 * EndpointIndex := Byte1Byte2
 *
 * TypeCode := 0x0004
 * RemainingArtifact := SourceID MessageHandle
 * SourceID := 20-byte_sequence
 * MessageHandle := 20-byte_sequence
 *
 * @return SAML V2.0 Artifact type of Type Code 0x0004
 */
// TODO use Interface type as the return type

public SAML2ArtifactType0004 buildArtifact() throws IdentityException {

    try {
        String issuerID = SAMLSSOUtil.getIssuer().getValue();
        int assertionConsumerServiceIndex = 0x0000;

        byte[] endpointIndex = DatatypeHelper.intToByteArray(assertionConsumerServiceIndex);
        byte[] trimmedIndex = new byte[2];
        trimmedIndex[0] = endpointIndex[2];
        trimmedIndex[1] = endpointIndex[3];

        MessageDigest sha1Digester = MessageDigest.getInstance("SHA-1");
        byte[] sourceID = sha1Digester.digest(issuerID.getBytes());
        // TODO trim/pad as necessary to make sourceID 20 bytes

        SecureRandom handleGenerator = SecureRandom.getInstance("SHA1PRNG");
        byte[] messageHandle;
        messageHandle = new byte[20];
        handleGenerator.nextBytes(messageHandle);

        return new SAML2ArtifactType0004(trimmedIndex, sourceID, messageHandle);
    } catch (NoSuchAlgorithmException e) {
        log.error("JVM does not support required cryptography algorithms: SHA-1/SHA1PRNG.", e);
        throw new InternalError("JVM does not support required cryptography algorithms: SHA-1/SHA1PRNG.");
    }
}

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From source file:com.github.mrstampy.gameboot.security.SecurityConfiguration.java

/**
 * Secure random./*from w w  w  . ja v a2s  .  c  om*/
 *
 * @return the secure random
 * @throws Exception
 *           the exception
 */
@Bean(name = GAME_BOOT_SECURE_RANDOM)
public SecureRandom secureRandom() throws Exception {
    SecureRandom random = isEmpty(algorithm) ? SecureRandom.getInstanceStrong()
            : SecureRandom.getInstance(algorithm);

    byte[] seed = new byte[seedSize];
    random.nextBytes(seed);

    return random;
}

---

From source file:com.fegor.alfresco.security.crypto.Crypto.java

/**
 * Encryption configuration// w w w.j  ava  2 s. c o  m
 * 
 * @throws NoSuchAlgorithmException
 * @throws InvalidKeySpecException
 * @throws NoSuchPaddingException
 * @throws InvalidParameterSpecException
 * @throws IllegalBlockSizeException
 * @throws BadPaddingException
 * @throws UnsupportedEncodingException
 * @throws InvalidKeyException
 */
public void configEncrypt() throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException,
        InvalidParameterSpecException, IllegalBlockSizeException, BadPaddingException,
        UnsupportedEncodingException, InvalidKeyException {
    SecretKeyFactory factory = null;
    SecretKey tmp = null;

    salt_pos = new byte[SALT_LEN];
    SecureRandom rnd = new SecureRandom();
    rnd.nextBytes(salt_pos);

    if (logger.isDebugEnabled())
        logger.debug(this.getClass().getName() + ": [salt: " + (new String(Hex.encodeHex(salt_pos))) + "]");

    factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");

    /*
     * http://www.javamex.com/tutorials/cryptography/unrestricted_policy_files
     * .shtml
     */
    KeySpec spec = new PBEKeySpec(password.toCharArray(), salt_pos, ITERATIONS, KEYLEN_BITS);
    tmp = factory.generateSecret(spec);
    SecretKey secret = new SecretKeySpec(tmp.getEncoded(), "AES");

    eCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    eCipher.init(Cipher.ENCRYPT_MODE, secret);
    AlgorithmParameters params = eCipher.getParameters();

    vector_init = params.getParameterSpec(IvParameterSpec.class).getIV();

    if (logger.isDebugEnabled())
        logger.debug(
                this.getClass().getName() + ": [vector ini: " + (new String(Hex.encodeHex(vector_init))) + "]");
}

---

From source file:org.apache.geronimo.crypto.ConfiguredEncryption.java

public ConfiguredEncryption(String location) throws IOException {
    File keyFile = new File(location);
    ObjectInputStream oin = null;
    if (keyFile != null) {
        if (keyFile.exists()) {
            FileInputStream fi = new FileInputStream(keyFile);
            try {
                oin = new ObjectInputStream(fi);
                spec = (SecretKeySpec) oin.readObject();
            } catch (ClassNotFoundException e) {
                log.error("Unable to read object or class not found: ", e);
            } finally {
                if (oin != null)
                    oin.close();//from   w ww  .  j a v a 2s  .c om
                if (fi != null)
                    fi.close();
            }
        } else {
            SecureRandom random = new SecureRandom();
            random.setSeed(System.currentTimeMillis());
            byte[] bytes = new byte[16];
            random.nextBytes(bytes);
            spec = new SecretKeySpec(bytes, "AES");
            File dir = keyFile.getParentFile();
            if (!dir.exists()) {
                dir.mkdirs();
            }
            if (!dir.exists() || !dir.isDirectory()) {
                throw new IllegalStateException("Could not create directory for secret key spec: " + dir);
            }
            FileOutputStream out = new FileOutputStream(keyFile);
            try {
                ObjectOutputStream oout = new ObjectOutputStream(out);
                try {
                    oout.writeObject(spec);
                    oout.flush();
                } finally {
                    oout.close();
                }
            } finally {
                out.close();
            }
            log.info("Generate a new configured encryption password: " + spec.getEncoded().toString());
        }
    }
}

---

From source file:plbtw.klmpk.barang.hilang.controller.DeveloperController.java

@RequestMapping(method = RequestMethod.POST, produces = "application/json")
public CustomResponseMessage addDeveloper(@RequestBody DeveloperRequest developerRequest) {
    try {//from  ww w.  j  a  va2  s .  co  m

        if (developerService.checkDeveloperExist(developerRequest.getEmail()) != null) {
            return new CustomResponseMessage(HttpStatus.METHOD_NOT_ALLOWED, "Email Already Used");
        }

        Developer developer = new Developer();
        developer.setRole(roleService.getRole(developerRequest.getIdrole()));
        SecureRandom random = new SecureRandom();
        byte bytes[] = new byte[20];
        random.nextBytes(bytes);
        String token = bytes.toString();
        developer.setToken(token);
        developer.setSecretKey(token);
        developer.setEmail(developerRequest.getEmail());
        developer.setPassword(developerRequest.getPassword());
        developerService.addDeveloper(developer);
        List<Developer> result = new ArrayList<>();
        result.add(developer);
        return new CustomResponseMessage(HttpStatus.CREATED, "Developer Has Been Created", result);
    } catch (Exception ex) {
        return new CustomResponseMessage(HttpStatus.BAD_REQUEST, ex.getLocalizedMessage());
    }
}

---

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