Example usage for java.security Signature getInstance

Introduction

In this page you can find the example usage for java.security Signature getInstance.

Prototype

public static Signature getInstance(String algorithm) throws NoSuchAlgorithmException 

Source Link

Document

Returns a Signature object that implements the specified signature algorithm.

Usage

From source file:com.alvexcore.share.jscript.JSShareExtensionRegistry.java

@SuppressWarnings("serial")
public String removeSignature(String data) {
    if (data == null)
        return null;
    int idx = data.indexOf("\n");
    if (idx <= 20)
        return null;
    String s = data.substring(0, idx);
    if (!s.startsWith("SIGNATURE:"))
        return null;
    s = s.substring(10);/*from   ww  w .  j  av  a 2s  . c  o  m*/
    Signature sig;
    try {
        sig = Signature.getInstance("SHA1withRSA");
        sig.initVerify(new PublicKey() {

            @Override
            public String getAlgorithm() {
                return "RSA";
            }

            @Override
            public String getFormat() {
                return "X.509";
            }

            @Override
            public byte[] getEncoded() {
                return new byte[] { 48, -126, 1, 34, 48, 13, 6, 9, 42, -122, 72, -122, -9, 13, 1, 1, 1, 5, 0, 3,
                        -126, 1, 15, 0, 48, -126, 1, 10, 2, -126, 1, 1, 0, -115, 117, -12, -114, -121, -128, 76,
                        99, -114, -37, 107, -44, 108, 36, 38, 99, 13, -93, -73, -62, 44, 10, 120, -22, -31, -25,
                        -109, 45, 24, -47, 59, -87, -39, -29, -35, -96, 13, -117, 31, -98, 107, 80, -104, -72,
                        5, -32, 79, -115, 59, -87, 109, -121, 104, 36, -14, 123, -113, 87, -50, 40, -52, -59,
                        -52, -7, -13, -34, 17, -29, -39, 63, -62, -44, 51, 68, -98, -115, -13, 10, -7, -101, 81,
                        -72, 81, 91, -94, 91, -94, 6, 65, 84, 35, -121, 14, -103, 38, 6, 59, 115, -110, 4, -63,
                        -89, -22, 27, 126, -96, -32, 97, 105, -108, 14, -23, -62, -89, -41, 30, -126, -114, 121,
                        17, 125, 18, 124, -114, 0, -13, 85, -11, 92, 87, -16, 3, 30, 23, -126, -33, 122, 126,
                        -72, -95, 29, 73, -24, -34, -27, -41, 109, -77, -108, -34, 91, -36, -3, 112, 13, 30,
                        111, 9, -105, 7, 8, -70, 95, -128, -82, -13, -4, 127, -58, 68, -114, 89, 69, 101, -106,
                        -123, -36, -90, -110, -44, 45, 25, 107, 52, 6, 69, -35, 89, 7, -59, 96, 4, 97, 29, 24,
                        -50, -59, -40, 104, 70, 68, -28, 77, 94, -57, -38, 91, -99, 37, -89, 105, -126, 52, 80,
                        111, 107, -69, 22, 39, -70, -5, 87, -33, -77, -79, -64, 76, -12, -58, -37, 56, 102, 17,
                        59, 11, -73, -68, -96, -108, -47, 13, -113, -77, 60, 88, -128, 19, -42, 12, 49, 89, 7,
                        -11, -11, -87, 37, 2, 3, 1, 0, 1 };
            }
        });
        String d = data.substring(idx + 1);
        sig.update(d.getBytes());
        if (sig.verify(Base64.decodeBase64(s)))
            return d;
        else
            return null;
    } catch (Exception e) {
        return null;
    }
}

---

From source file:org.carewebframework.api.security.CipherUtil.java

/**
 * Returns the digital signature for the specified content.
 * /*from   ww  w  .j  a va 2s . co m*/
 * @param key The private key to sign the content.
 * @param content The content to sign.
 * @return The digital signature.
 * @throws Exception Unspecified exception.
 */
public static String sign(PrivateKey key, String content) throws Exception {
    Signature signature = Signature.getInstance(SIGN_ALGORITHM);
    signature.initSign(key);
    signature.update(content.getBytes());
    return Base64.encodeBase64String(signature.sign());
}

---

From source file:org.jvnet.hudson.update_center.Signing.java

/**
 * Generates a canonicalized JSON format of the given object, and put the signature in it.
 * Because it mutates the signed object itself, validating the signature needs a bit of work,
 * but this enables a signature to be added transparently.
 *///from w  ww.j a va  2  s. c  om
public void sign(JSONObject o) throws GeneralSecurityException, IOException {
    JSONObject sign = new JSONObject();

    List<X509Certificate> certs = getCertificateChain();
    X509Certificate signer = certs.get(0); // the first one is the signer, and the rest is the chain to a root CA.

    // this is for computing a digest
    MessageDigest sha1 = MessageDigest.getInstance("SHA1");
    DigestOutputStream dos = new DigestOutputStream(new NullOutputStream(), sha1);

    // this is for computing a signature
    PrivateKey key = ((KeyPair) new PEMReader(new FileReader(privateKey)).readObject()).getPrivate();
    Signature sig = Signature.getInstance("SHA1withRSA");
    sig.initSign(key);
    SignatureOutputStream sos = new SignatureOutputStream(sig);

    // this is for verifying that signature validates
    Signature verifier = Signature.getInstance("SHA1withRSA");
    verifier.initVerify(signer.getPublicKey());
    SignatureOutputStream vos = new SignatureOutputStream(verifier);

    o.writeCanonical(new OutputStreamWriter(new TeeOutputStream(new TeeOutputStream(dos, sos), vos), "UTF-8"));

    // digest
    byte[] digest = sha1.digest();
    sign.put("digest", new String(Base64.encodeBase64(digest)));

    // signature
    byte[] s = sig.sign();
    sign.put("signature", new String(Base64.encodeBase64(s)));

    // and certificate chain
    JSONArray a = new JSONArray();
    for (X509Certificate cert : certs)
        a.add(new String(Base64.encodeBase64(cert.getEncoded())));
    sign.put("certificates", a);

    // did the signature validate?
    if (!verifier.verify(s))
        throw new GeneralSecurityException(
                "Signature failed to validate. Either the certificate and the private key weren't matching, or a bug in the program.");

    o.put("signature", sign);
}

---

From source file:GCS_Auth.java

public GCS_Auth(String client_id, String key) {
    String SCOPE = "https://www.googleapis.com/auth/shoppingapi";
    SCOPE = SCOPE + " " + "https://www.googleapis.com/auth/structuredcontent";
    try {//from w ww . j  a va  2  s  .  co m
        String jwt_header = "{\"alg\":\"RS256\",\"typ\":\"JWT\"}";

        long now = System.currentTimeMillis() / 1000L;
        long exp = now + 3600;
        String iss = client_id;
        String claim = "{\"iss\":\"" + iss + "\",\"scope\":\"" + SCOPE
                + "\",\"aud\":\"https://accounts.google.com/o/oauth2/token\",\"exp\":" + exp + ",\"iat\":" + now
                + "}";

        String jwt = Base64.encodeBase64URLSafeString(jwt_header.getBytes()) + "."
                + Base64.encodeBase64URLSafeString(claim.getBytes("UTF-8"));

        byte[] jwt_data = jwt.getBytes("UTF8");

        Signature sig = Signature.getInstance("SHA256WithRSA");

        KeyStore ks = java.security.KeyStore.getInstance("PKCS12");
        ks.load(new FileInputStream(key), "notasecret".toCharArray());

        sig.initSign((PrivateKey) ks.getKey("privatekey", "notasecret".toCharArray()));
        sig.update(jwt_data);
        byte[] signatureBytes = sig.sign();
        String b64sig = Base64.encodeBase64URLSafeString(signatureBytes);

        String assertion = jwt + "." + b64sig;

        //System.out.println("Assertion: " + assertion);

        String data = "grant_type=assertion";
        data += "&" + "assertion_type" + "="
                + URLEncoder.encode("http://oauth.net/grant_type/jwt/1.0/bearer", "UTF-8");
        data += "&" + "assertion=" + URLEncoder.encode(assertion, "UTF-8");

        URLConnection conn = null;
        try {
            URL url = new URL("https://accounts.google.com/o/oauth2/token");
            conn = url.openConnection();
            conn.setDoOutput(true);
            OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
            wr.write(data);
            wr.flush();

            BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = rd.readLine()) != null) {
                if (line.split(":").length > 0)
                    if (line.split(":")[0].trim().equals("\"access_token\""))
                        access_token = line.split(":")[1].trim().replace("\"", "").replace(",", "");
                System.out.println(line);
            }
            wr.close();
            rd.close();
        } catch (Exception ex) {
            InputStream error = ((HttpURLConnection) conn).getErrorStream();
            BufferedReader br = new BufferedReader(new InputStreamReader(error));
            StringBuilder sb = new StringBuilder();
            String line;
            while ((line = br.readLine()) != null) {
                sb.append(line);
            }
            System.out.println("Error: " + ex + "\n " + sb.toString());
        }
        //System.out.println(access_token);
    } catch (Exception ex) {
        System.out.println("Error: " + ex);
    }
}

---

From source file:com.streamsets.lib.security.util.DataSignature.java

public Verifier getVerifier(final PublicKey publicKey) {
    return new Verifier() {
        @Override/*from  ww  w .  ja v a 2  s  .  c  om*/
        public boolean verify(byte[] data, byte[] signature) throws GeneralSecurityException {
            Signature signer = Signature.getInstance("SHA1withDSA");
            signer.initVerify(publicKey);
            signer.update(data);
            return signer.verify(signature);
        }
    };
}

---

From source file:eu.europa.esig.dss.extension.AbstractTestExtension.java

protected SignatureValue sign(SignatureAlgorithm algo, MockPrivateKeyEntry privateKey, ToBeSigned bytesToSign)
        throws GeneralSecurityException {
    final Signature signature = Signature.getInstance(algo.getJCEId());
    signature.initSign(privateKey.getPrivateKey());
    signature.update(bytesToSign.getBytes());
    final byte[] signatureValue = signature.sign();
    return new SignatureValue(algo, signatureValue);
}

---

From source file:test.be.fedict.eid.applet.model.AuthenticationSignatureServiceBean.java

public PreSignResult preSign(List<X509Certificate> authnCertificateChain,
        AuthenticationSignatureContext authenticationSignatureContext) {
    LOG.debug("preSign");
    LOG.debug("authn cert chain size: " + authnCertificateChain.size());

    KeyStore proxyKeyStore;/*  w w w  .  ja v a2 s  . com*/
    final ProxyPrivateKey proxyPrivateKey;
    try {
        proxyKeyStore = KeyStore.getInstance("ProxyBeID");
        proxyKeyStore.load(null);
        proxyPrivateKey = (ProxyPrivateKey) proxyKeyStore.getKey("Signature", null);
    } catch (Exception e) {
        throw new RuntimeException("error loading ProxyBeID keystore");
    }

    FutureTask<String> signTask = new FutureTask<String>(new Callable<String>() {
        public String call() throws Exception {
            final Signature signature = Signature.getInstance("SHA256withRSA");
            signature.initSign(proxyPrivateKey);

            final byte[] toBeSigned = "hello world".getBytes();
            signature.update(toBeSigned);
            final byte[] signatureValue = signature.sign();
            LOG.debug("received signature value");
            return "signature result";
        }

    });
    final ExecutorService executor = Executors.newFixedThreadPool(1);
    executor.execute(signTask);

    authenticationSignatureContext.store("key", proxyPrivateKey);
    authenticationSignatureContext.store("signTask", signTask);

    byte[] digestValue;
    try {
        digestValue = proxyPrivateKey.getDigestInfo().getDigestValue();
    } catch (InterruptedException e) {
        throw new RuntimeException("signature error: " + e.getMessage(), e);
    }
    DigestInfo digestInfo = new DigestInfo(digestValue, "SHA-256", "WS-Security message");
    PreSignResult preSignResult = new PreSignResult(digestInfo, true);
    return preSignResult;
}

---

From source file:me.disconnect.mobile.billing.Security.java

/**
 * Verifies that the signature from the server matches the computed
 * signature on the data.  Returns true if the data is correctly signed.
 *
 * @param publicKey public key associated with the developer account
 * @param signedData signed data from server
 * @param signature server signature//from w  w w .ja v  a 2 s. c  o  m
 * @return true if the data and signature match
 */
public static boolean verify(PublicKey publicKey, String signedData, String signature) {
    Signature sig;
    try {
        sig = Signature.getInstance(SIGNATURE_ALGORITHM);
        sig.initVerify(publicKey);
        sig.update(signedData.getBytes());
        if (!sig.verify(Base64.decode(signature))) {
            Log.e(TAG, "Signature verification failed.");
            return false;
        }
        return true;
    } catch (NoSuchAlgorithmException e) {
        Log.e(TAG, "NoSuchAlgorithmException.");
    } catch (InvalidKeyException e) {
        Log.e(TAG, "Invalid key specification.");
    } catch (SignatureException e) {
        Log.e(TAG, "Signature exception.");
    } catch (Base64DecoderException e) {
        Log.e(TAG, "Base64 decoding failed.");
    } catch (RuntimeException e) {
        Log.e(TAG, "RuntimeException in Security.verify():");
        e.printStackTrace();
    }
    return false;
}

---

From source file:com.dev.cty.utils.googleplay.Security.java

/**
 * Verifies that the signature from the server matches the computed
 * signature on the data.  Returns true if the data is correctly signed.
 *
 * @param publicKey public key associated with the developer account
 * @param signedData signed data from server
 * @param signature server signature//from   ww  w . j av a2  s . c om
 * @return true if the data and signature match
 */
public static boolean verify(PublicKey publicKey, String signedData, String signature) {
    Signature sig;
    try {
        sig = Signature.getInstance(SIGNATURE_ALGORITHM);
        sig.initVerify(publicKey);
        sig.update(signedData.getBytes());
        if (!sig.verify(Base64.decode(signature))) {
            logger.info("Signature verification failed.");
            return false;
        }
        return true;
    } catch (NoSuchAlgorithmException e) {
        logger.info("NoSuchAlgorithmException.");
    } catch (InvalidKeyException e) {
        logger.info("Invalid key specification.");
    } catch (SignatureException e) {
        logger.info("Signature exception.");
    } catch (Base64DecoderException e) {
        logger.info("Base64 decoding failed.");
    }
    return false;
}

---

From source file:org.apache.abdera2.common.security.HashHelper.java

public static String sig(PrivateKey key, String alg, byte[] mat) {
    try {// w w w . j  a  va 2 s . c o  m
        Signature sig = Signature.getInstance(alg);
        sig.initSign((PrivateKey) key);
        sig.update(mat);
        byte[] dat = sig.sign();
        return Base64.encodeBase64URLSafeString(dat);
    } catch (Throwable t) {
        throw ExceptionHelper.propogate(t);
    }
}

---

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