Example usage for java.security Signature update

Introduction

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

Prototype

public final void update(ByteBuffer data) throws SignatureException 

Source Link

Document

Updates the data to be signed or verified using the specified ByteBuffer.

Usage

From source file:com.glaf.core.security.SecurityUtils.java

/**
 * ???//  w  w w .jav a2s  .c o m
 * 
 * @param ctx
 *            
 * @param source
 *            
 * @param signed
 *            ???
 * @param pubKey
 *            
 * @return boolean
 */
public static boolean verify(SecurityContext ctx, byte[] source, byte[] signed, PublicKey publicKey) {
    try {
        boolean verify = false;
        Signature sign = Signature.getInstance(ctx.getSignatureAlgorithm(), ctx.getJceProvider());
        sign.initVerify(publicKey);
        sign.update(source);
        verify = sign.verify(signed);
        return verify;
    } catch (Exception ex) {
        throw new SecurityException(ex);
    }
}

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From source file:org.umit.icm.mobile.utils.RSACrypto.java

/**
 * Returns an RSA KeyPair generated using 
 * {@link KeyPairGenerator#generateKeyPair()}. 
 * //from   w  w  w. ja  v a2 s .  com
 *    
                             
@return {@link KeyPair}                             
 *
                                    
@see         KeyPairGenerator
 */

public static byte[] Sign(PrivateKey privateKey, byte[] data) throws Exception {
    if (Constants.DEBUG_MODE)
        System.out.println("Signing the key inside RSACrypto#Sign");
    Signature dsa = Signature.getInstance("SHA1withRSA");

    dsa.initSign(privateKey);
    dsa.update(data);
    return dsa.sign();
}

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From source file:de.ub0r.android.lib.DonationHelper.java

/**
 * Check for signature updates.// w  w w .j  a  v a 2s  .  c o  m
 * 
 * @param context
 *            {@link Context}
 * @param s
 *            signature
 * @param h
 *            hash
 * @return true if ads should be hidden
 */
public static boolean checkSig(final Context context, final String s, final String h) {
    Log.d(TAG, "checkSig(ctx, " + s + ", " + h + ")");
    boolean ret = false;
    try {
        final byte[] publicKey = Base64Coder.decode(KEY);
        final KeyFactory keyFactory = KeyFactory.getInstance(ALGO);
        PublicKey pk = keyFactory.generatePublic(new X509EncodedKeySpec(publicKey));
        Log.d(TAG, "hash: " + h);
        final String cs = s.replaceAll(" |\n|\t", "");
        Log.d(TAG, "read sig: " + cs);
        try {
            byte[] signature = Base64Coder.decode(cs);
            Signature sig = Signature.getInstance(SIGALGO);
            sig.initVerify(pk);
            sig.update(h.getBytes());
            ret = sig.verify(signature);
            Log.d(TAG, "ret: " + ret);
        } catch (IllegalArgumentException e) {
            Log.w(TAG, "error reading signature", e);
        }
    } catch (Exception e) {
        Log.e(TAG, "error reading signatures", e);
    }
    if (!ret) {
        Log.i(TAG, "sig: " + s);
    }
    return ret;
}

---

From source file:com.eucalyptus.blockstorage.HttpTransfer.java

/**
 * Calculates and sets the Authorization header value for the request using the EucaRSA-V2 signing algorithm
 * Algorithm Overview:/*  ww w  .  j  a v a  2  s .co m*/
 * 
 * 1. Generate the canonical Request
 *  a.) CanonicalRequest =
 *          HTTPRequestMethod + '\n' +
 *          CanonicalURI + '\n' +
 *          CanonicalQueryString + '\n' +
 *          CanonicalHeaders + '\n' +
 *          SignedHeaders
 *    b.) Where CanonicalURI = 
 *    c.) Where CanonicalQueryString = 
 *   d.) Where CanonicalHeaders =  sorted (by lowercased header name) ';' delimited list of <lowercase(headername)>:<value> items
 *   e.) Where SignedHeaders = sorted, ';' delimited list of headers in CanonicalHeaders
 * 
 * 2. Signature = RSA(privkey, SHA256(CanonicalRequest))
 * 
 * 3. Add an Authorization HTTP header to the request that contains the following strings, separated by spaces:
 * EUCA2-RSA-SHA256
 * The lower-case hexadecimal encoding of the component's X.509 certificate's md5 fingerprint
 * The SignedHeaders list calculated in Task 1
 * The Base64 encoding of the Signature calculated in Task 2
 * 
 * @param httpBaseRequest -- the request, the 'Authorization' header will be added to the request
 */
public static void signEucaInternal(HttpMethodBase httpBaseRequest) {
    StringBuilder canonicalRequest = new StringBuilder();
    String canonicalURI = null;
    String verb = httpBaseRequest.getName();
    canonicalURI = httpBaseRequest.getPath();

    String canonicalQuery = calcCanonicalQuery(httpBaseRequest);
    String[] processedHeaders = getCanonicalAndSignedHeaders(httpBaseRequest);
    String canonicalHeaders = processedHeaders[0];
    String signedHeaders = processedHeaders[1];

    canonicalRequest.append(verb).append('\n');
    canonicalRequest.append(canonicalURI).append('\n');
    canonicalRequest.append(canonicalQuery).append('\n');
    canonicalRequest.append(canonicalHeaders).append('\n');
    canonicalRequest.append(signedHeaders);

    StringBuilder authHeader = new StringBuilder(EUCA2_AUTH_ID);
    String signature = null;
    String fingerprint = null;
    try {
        Credentials ccCreds = SystemCredentials.lookup(Storage.class);
        PrivateKey ccPrivateKey = ccCreds.getPrivateKey();
        fingerprint = ccCreds.getCertFingerprint();
        Signature sign = Signature.getInstance("SHA256withRSA");
        sign.initSign(ccPrivateKey);
        LOG.debug("Signing canonical request: " + canonicalRequest.toString());
        sign.update(canonicalRequest.toString().getBytes());
        byte[] sig = sign.sign();
        signature = new String(Base64.encode(sig));
    } catch (Exception ex) {
        LOG.error("Signing error while signing request", ex);
    }

    authHeader.append(" ").append(fingerprint.toLowerCase()).append(" ").append(signedHeaders.toString())
            .append(" ").append(signature);
    httpBaseRequest.addRequestHeader(EUCA2_AUTH_HEADER_NAME, authHeader.toString());
}

---

From source file:com.glaf.core.security.SecurityUtils.java

/**
 * ?????????//from  ww w  .  j av a2  s. co m
 * 
 * @param ctx
 *            
 * @param content
 *            ??
 * @param privateKey
 *            ?
 * @return byte[] ???
 */
public static byte[] sign(SecurityContext ctx, byte[] content, Key privateKey) {
    try {
        Signature sign = Signature.getInstance(ctx.getSignatureAlgorithm(), ctx.getJceProvider());
        PrivateKey pk = (PrivateKey) privateKey;
        sign.initSign(pk);
        sign.update(content);
        byte[] signed = sign.sign();
        return signed;
    } catch (Exception ex) {
        throw new SecurityException(ex);
    }
}

---

From source file:ai.susi.tools.JsonSignature.java

public static boolean verify(Map<String, byte[]> obj, PublicKey key)
        throws SignatureException, InvalidKeyException {

    if (!obj.containsKey(signatureString))
        throw new SignatureException("No signature supplied");

    Signature signature;
    try {/*from   www .  j  a  v  a 2 s .  co m*/
        signature = Signature.getInstance("SHA256withRSA");
    } catch (NoSuchAlgorithmException e) {
        return false; //does not happen
    }

    byte[] sigString = obj.get(signatureString);
    byte[] sig = Base64.getDecoder().decode(sigString);
    obj.remove(signatureString);

    signature.initVerify(key);
    signature.update(obj.toString().getBytes(StandardCharsets.UTF_8));
    boolean res = signature.verify(sig);

    obj.put(signatureString, sigString);

    return res;
}

---

From source file:gemlite.core.util.RSAUtils.java

/**
 * <p>/* w w w  .j  a  v a2 s .  c o  m*/
 * ?????
 * </p>
 * 
 * @param data
 *          ?
 * @param privateKey
 *          ?(BASE64?)
 * 
 * @return
 * @throws Exception
 */
public static String sign(byte[] data, String privateKey) throws Exception {
    byte[] keyBytes = Base64Utils.decode(privateKey);
    PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);
    KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
    PrivateKey privateK = keyFactory.generatePrivate(pkcs8KeySpec);
    Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM);
    signature.initSign(privateK);
    signature.update(data);
    return Base64Utils.encode(signature.sign());
}

---

From source file:gemlite.core.util.RSAUtils.java

/**
 * <p>//from   www.jav  a  2s.c  o  m
 * ??
 * </p>
 * 
 * @param data
 *          ?
 * @param publicKey
 *          (BASE64?)
 * @param sign
 *          ??
 * 
 * @return
 * @throws Exception
 * 
 */
public static boolean verify(byte[] data, String publicKey, String sign) throws Exception {
    byte[] keyBytes = Base64Utils.decode(publicKey);
    X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes);
    KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
    PublicKey publicK = keyFactory.generatePublic(keySpec);
    Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM);
    signature.initVerify(publicK);
    signature.update(data);
    return signature.verify(Base64Utils.decode(sign));
}

---

From source file:ai.susi.tools.JsonSignature.java

/**
 * Verfies if the signature of a JSONObject is valid
 * @param obj the JSONObject/*from  w w  w.  ja va  2 s . c  o m*/
 * @param key the public key of the signature issuer
 * @return true if the signature is valid
 * @throws SignatureException if the JSONObject does not have a signature or something with the JSONObject is bogus
 * @throws InvalidKeyException if the key is not valid (for example not RSA)
 */
public static boolean verify(JSONObject obj, PublicKey key) throws SignatureException, InvalidKeyException {

    if (!obj.has(signatureString))
        throw new SignatureException("No signature supplied");

    Signature signature;
    try {
        signature = Signature.getInstance("SHA256withRSA");
    } catch (NoSuchAlgorithmException e) {
        return false; //does not happen
    }

    String sigString = obj.getString(signatureString);
    byte[] sig = Base64.getDecoder().decode(sigString);
    obj.remove(signatureString);

    signature.initVerify(key);
    signature.update(obj.toString().getBytes(StandardCharsets.UTF_8));
    boolean res = signature.verify(sig);

    obj.put(signatureString, sigString);

    return res;
}

---

From source file:org.jets3t.service.security.EncryptionUtil.java

/**
 * Generate an RSA SHA1 signature of the given data using the given private
 * key DER certificate./*from ww  w . j av  a 2  s  . c om*/
 *
 * Based on example code from:
 * http://www.java2s.com/Tutorial/Java/0490__Security/RSASignatureGeneration.htm
 * http://forums.sun.com/thread.jspa?threadID=5175986
 *
 * @throws NoSuchAlgorithmException
 * @throws InvalidKeyException
 * @throws SignatureException
 * @throws InvalidKeySpecException
 * @throws NoSuchProviderException
 */
public static byte[] signWithRsaSha1(byte[] derPrivateKeyBytes, byte[] dataToSign)
        throws NoSuchAlgorithmException, InvalidKeyException, SignatureException, InvalidKeySpecException,
        NoSuchProviderException {
    // Build an RSA private key from private key data
    PKCS8EncodedKeySpec privSpec = new PKCS8EncodedKeySpec(derPrivateKeyBytes);
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    RSAPrivateKey privateKey = (RSAPrivateKey) keyFactory.generatePrivate(privSpec);

    // Sign data
    Signature signature = Signature.getInstance("SHA1withRSA", "BC");
    signature.initSign(privateKey, new SecureRandom());
    signature.update(dataToSign);

    byte[] signatureBytes = signature.sign();
    return signatureBytes;
}

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