Example usage for java.math BigInteger toString

Introduction

In this page you can find the example usage for java.math BigInteger toString.

Prototype

public String toString(int radix)

Source Link

Document

Returns the String representation of this BigInteger in the given radix.

Usage

From source file:org.sipfoundry.sipxbridge.SipXauthIdentity.java

static private String encodeIdentity(String identity, String callId, String fromTag, long timestamp) {
    // calculate timestamp
    Long seconds = timestamp / 1000;
    String stamp = Long.toHexString(seconds).toUpperCase();
    String strSignature = stamp + SignatureFieldSeparator;

    // signature-hash=MD5(<timestamp><secret><from-tag><call-id><identity>)
    try {//from   ww w .  j a v  a  2 s  .c  om
        MessageDigest digest = MessageDigest.getInstance("MD5");
        digest.update(stamp.getBytes());
        digest.update(sSignatureSecretDecoded);
        digest.update(fromTag.getBytes());
        digest.update(callId.getBytes());
        digest.update(identity.getBytes());
        // create md5 hash of token
        byte md5hash[] = digest.digest();
        BigInteger number = new BigInteger(1, md5hash);
        strSignature += number.toString(16);
    } catch (Exception ex) {
        logger.error("Failed to generate signature", ex);
    }

    String encodedUrl = "<sip:" + identity + ";signature=" + strSignature + ">";
    return encodedUrl;
}

From source file:org.wso2.carbon.apimgt.gateway.utils.APIMgtGoogleAnalyticsUtils.java

/**
 * Generates a 32 character length random number for cacheBusterId
 *
 * @return cacheBusterId/*from   w  w w. j  ava  2s .  co m*/
 * @throws NoSuchAlgorithmException
 * @throws UnsupportedEncodingException
 */
public static String getCacheBusterId() throws NoSuchAlgorithmException, UnsupportedEncodingException {
    String message = getRandomNumber() + UUID.randomUUID().toString();
    MessageDigest m = MessageDigest.getInstance("MD5");
    m.update(message.getBytes("UTF-8"), 0, message.length());
    byte[] sum = m.digest();
    BigInteger messageAsNumber = new BigInteger(1, sum);
    String md5String = messageAsNumber.toString(16);

    // Pad to make sure id is 32 characters long.
    while (md5String.length() < 32) {
        md5String = "0" + md5String;
    }
    return "0x" + md5String.substring(0, 16);
}

From source file:util.Support.java

public static String encryptMD5(String pw) {
    try {//from  w ww.  j a  v  a2 s.com
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] messageDigest = md.digest(pw.getBytes());
        BigInteger number = new BigInteger(1, messageDigest);
        String hashText = number.toString(16);
        while (hashText.length() < 32) {
            hashText = "0" + hashText;
        }
        return hashText;
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException();
    }
}

From source file:com.vmware.identity.idm.CommonUtil.java

public static String Computesha256Hash(File secretFile) throws IOException, NoSuchAlgorithmException {
    FileInputStream fs = null;/* www.j ava 2  s. c  om*/
    try {
        fs = new FileInputStream(secretFile);
        MessageDigest md = MessageDigest.getInstance("SHA-256");
        DigestInputStream dis = new DigestInputStream(fs, md);
        while ((dis.read()) != -1)
            ;
        BigInteger bi = new BigInteger(md.digest());
        return bi.toString(64);
    } finally {
        if (fs != null) {
            fs.close();
        }
    }
}

From source file:org.opendaylight.openflowplugin.openflow.md.util.InventoryDataServiceUtil.java

/**
 * @param dataPathId datapath id in big interger value
 * @return string of size 16, padded with '0'
 *//*from   ww  w .  ja v  a2  s  . c o  m*/
public static String bigIntegerToPaddedHex(final BigInteger dataPathId) {
    return StringUtils.leftPad(dataPathId.toString(16), 16, "0");
}

From source file:edu.hm.muse.controller.Logincontroller.java

public static String calculateSHA256(InputStream is) {
    String output;//from w  w  w  .ja  va2  s  .  c om
    int read;
    byte[] buffer = new byte[8192];
    try {
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        while ((read = is.read(buffer)) > 0) {
            digest.update(buffer, 0, read);
        }
        byte[] hash = digest.digest();
        BigInteger bigInt = new BigInteger(1, hash);
        output = bigInt.toString(16);
    } catch (Exception e) {
        e.printStackTrace(System.err);
        return "0";
    }
    return output;
}

From source file:net.sf.keystore_explorer.utilities.io.HexUtil.java

/**
 * Get hex string for the supplied big integer: "0x<hex string>" where hex
 * string is outputted in groups of exactly four characters sub-divided by
 * spaces.//from  w w w . j  a  v a2s  .c  o  m
 *
 * @param bigInt
 *            Big integer
 * @return Hex string
 */
public static String getHexString(BigInteger bigInt) {
    // Convert number to hex string
    String hex = bigInt.toString(16).toUpperCase();

    // Get number padding bytes
    int padding = (4 - (hex.length() % 4));

    // Insert any required padding to get groups of exactly 4 characters
    if ((padding > 0) && (padding < 4)) {
        StringBuffer sb = new StringBuffer(hex);

        for (int i = 0; i < padding; i++) {
            sb.insert(0, '0');
        }

        hex = sb.toString();
    }

    // Output with leading "0x" and spaces to form groups
    StringBuffer strBuff = new StringBuffer();

    strBuff.append("0x");

    for (int i = 0; i < hex.length(); i++) {
        strBuff.append(hex.charAt(i));

        if ((((i + 1) % 4) == 0) && ((i + 1) != hex.length())) {
            strBuff.append(' ');
        }
    }

    return strBuff.toString();
}

From source file:com.sixsq.slipstream.cookie.CryptoUtils.java

/**
 * Sign the given data and return a String representation of the signature.
 * The argument may not be null.//from   ww  w.  ja  v  a 2 s .com
 *
 * @param data
 *            information to sign
 *
 * @return String representation of the signature.
 */
public static String sign(String data) {

    try {

        Signature signature = Signature.getInstance(signatureAlgorithm);
        signature.initSign(privateKey);

        signature.update(data.getBytes());
        BigInteger biSignature = new BigInteger(signature.sign());
        return biSignature.toString(radix);

    } catch (NoSuchAlgorithmException nsae) {
        return null;
    } catch (InvalidKeyException ike) {
        return null;
    } catch (SignatureException se) {
        return null;
    }
}

From source file:org.apache.accumulo.server.master.tableOps.Utils.java

static String getNextTableId(String tableName, Instance instance) throws ThriftTableOperationException {

    String tableId = null;/*  www .  j av a  2 s  .c om*/
    try {
        IZooReaderWriter zoo = ZooReaderWriter.getRetryingInstance();
        final String ntp = ZooUtil.getRoot(instance) + Constants.ZTABLES;
        byte[] nid = zoo.mutate(ntp, "0".getBytes(), ZooUtil.PUBLIC, new Mutator() {
            @Override
            public byte[] mutate(byte[] currentValue) throws Exception {
                BigInteger nextId = new BigInteger(new String(currentValue), Character.MAX_RADIX);
                nextId = nextId.add(BigInteger.ONE);
                return nextId.toString(Character.MAX_RADIX).getBytes();
            }
        });
        return new String(nid);
    } catch (Exception e1) {
        Logger.getLogger(CreateTable.class).error("Failed to assign tableId to " + tableName, e1);
        throw new ThriftTableOperationException(tableId, tableName, TableOperation.CREATE,
                TableOperationExceptionType.OTHER, e1.getMessage());
    }
}

From source file:Pusher.java

/**
 * Converts a byte array to a string representation
 * @param data// w  w w . j  ava 2s  . c  o  m
 * @return
 */
private static String byteArrayToString(byte[] data) {
    BigInteger bigInteger = new BigInteger(1, data);
    String hash = bigInteger.toString(16);
    // Zero pad it
    while (hash.length() < 32) {
        hash = "0" + hash;
    }
    return hash;
}