Example usage for javax.crypto SecretKey getAlgorithm

Introduction

In this page you can find the example usage for javax.crypto SecretKey getAlgorithm.

Prototype

public String getAlgorithm();

Source Link

Document

Returns the standard algorithm name for this key.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    KeyGenerator keyGen = KeyGenerator.getInstance("HmacMD5");
    SecretKey key = keyGen.generateKey();

    Mac mac = Mac.getInstance(key.getAlgorithm());
    mac.init(key);// ww  w  .j  a  va  2  s . c o m

    String str = "This message will be digested";

    byte[] utf8 = str.getBytes("UTF8");
    byte[] digest = mac.doFinal(utf8);

    String digestB64 = new sun.misc.BASE64Encoder().encode(digest);
    System.out.println(digestB64);
}

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From source file:Main.java

public static String getBytesMacEncrypt(byte[] bytes, SecretKey key) {
    String algorithm = key.getAlgorithm();
    if (algorithm.equals(HmacMD5) || algorithm.equals(HmacSHA1) || algorithm.equals(HmacSHA256)
            || algorithm.equals(HmacSHA384) || algorithm.equals(HmacSHA512)) {
        Mac mac = null;// www  . j a  v a  2 s . com
        try {
            mac = Mac.getInstance(algorithm);
            mac.init(key);
            return bytes2String(mac.doFinal(bytes));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        }
    }
    return null;
}

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From source file:Main.java

private static Cipher getCipherFromPassphrase(String passphrase, byte[] salt, int opMode)
        throws GeneralSecurityException {
    SecretKey key = getKeyFromPassphrase(passphrase, salt);
    Cipher cipher = Cipher.getInstance(key.getAlgorithm());
    cipher.init(opMode, key, new PBEParameterSpec(salt, 100));

    return cipher;
}

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From source file:Main.java

public static String getFileMacEncrypt(File file, SecretKey key) throws IOException {
    String algorithm = key.getAlgorithm();
    Mac mac = null;//from w  w w.  ja v  a  2  s. c  om
    try {
        mac = Mac.getInstance(algorithm);
        mac.init(key);
        FileInputStream in = new FileInputStream(file);
        byte[] buffer = new byte[1024 * 1024];
        int len = 0;
        while ((len = in.read(buffer)) > 0) {
            mac.update(buffer, 0, len);
        }
        in.close();
        return bytes2String(mac.doFinal());
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:Main.java

private static byte[] encryptHMAC(String data, String secret) throws IOException {
    byte[] bytes = null;
    try {//from w ww  .  ja  v a2  s . c  o  m
        SecretKey secretKey = new SecretKeySpec(secret.getBytes("UTF-8"), "HmacMD5");
        Mac mac = Mac.getInstance(secretKey.getAlgorithm());
        mac.init(secretKey);
        bytes = mac.doFinal(data.getBytes("UTF-8"));
    } catch (GeneralSecurityException gse) {
        String msg = getStringFromException(gse);
        throw new IOException(msg);
    }
    return bytes;
}

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From source file:Main.java

private static Cipher getCipherFromPassphrase(String passphrase, byte[] salt, int iterations, int opMode)
        throws GeneralSecurityException {
    SecretKey key = getKeyFromPassphrase(passphrase, salt, iterations);
    Cipher cipher = Cipher.getInstance(key.getAlgorithm());
    cipher.init(opMode, key, new PBEParameterSpec(salt, iterations));

    return cipher;
}

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From source file:com.konakart.bl.modules.payment.barclaycardsmartpayhosted.BarclaycardSmartPayHostedHMACTools.java

/**
 * Get a HMAC signature using the specified secret 
 * @param secret/* w w w  .  j  av a 2 s  .  co  m*/
 * @param signingData
 * @return a Base64 encoded signature
 */
public static String getBase64EncodedSignature(String secret, String signingData) {
    SecretKey key = getMacKey(secret);
    try {
        Mac mac = Mac.getInstance(key.getAlgorithm());
        mac.init(getMacKey(secret));
        byte[] digest = mac.doFinal(signingData.getBytes("UTF8"));
        return new String(Base64.encodeBase64(digest), "ASCII");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:com.konakart.bl.modules.payment.barclaycardsmartpayhosted.BarclaycardSmartPayHostedHMACTools.java

/**
 * Verify the signature/* w  w w.  jav a2 s  .co  m*/
 * @param secret
 * @param sig
 * @param signedData
 * @return true if the signature is verified
 */
public static boolean verifyBase64EncodedSignature(String secret, String sig, String signedData) {
    if (secret == null || sig == null || signedData == null)
        return false;

    SecretKey key = getMacKey(secret);
    try {
        Mac mac = Mac.getInstance(key.getAlgorithm());
        mac.init(getMacKey(secret));
        byte[] digest = mac.doFinal(signedData.getBytes("UTF8"));
        return sig.equals(new String(Base64.encodeBase64(digest), "ASCII"));
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    }
    return false;
}

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From source file:com.janrain.backplane.common.HmacHashUtils.java

private static String hmacSign(SecretKey key, String password)
        throws NoSuchAlgorithmException, InvalidKeyException, UnsupportedEncodingException {
    Mac mac = Mac.getInstance(key.getAlgorithm());
    mac.init(key);//from  www  .j a va  2 s .c  o m
    return new String(Base64.encodeBase64(mac.doFinal(password.getBytes())), UTF8_STRING_ENCODING);
}

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From source file:com.tesora.dve.common.PECryptoUtils.java

private static Cipher createCrypter(int mode) throws Exception {
    // Create the key
    KeySpec keySpec = new PBEKeySpec(settings.getPassword().toCharArray(), settings.getSalt(),
            settings.getIterations());//from w  w w .  ja  v a  2s  .c  om
    SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);

    Cipher cipher = Cipher.getInstance(key.getAlgorithm());

    cipher.init(mode, key, new PBEParameterSpec(settings.getSalt(), settings.getIterations()));

    return cipher;
}

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