Crypt Class Reference

Static Public Member Functions
static String	base64encode (String text)
static String	base64decode (String text)
static String	SHA1 (String text) throws NoSuchAlgorithmException, UnsupportedEncodingException
static String	MD5 (String text) throws NoSuchAlgorithmException, UnsupportedEncodingException
static String	generateHash () throws NoSuchAlgorithmException, UnsupportedEncodingException

Static Private Member Functions
static String	convertToHex (byte[] data)

Member Function Documentation

base64decode()

static String base64decode ( String  text )

static

                                                   {
        try {
            String rez = new String(Base64.decodeBase64(text.getBytes("UTF-8")));
            return rez;
        } catch (IOException e) {
            return null;
        }
    }

base64encode()

static String base64encode ( String  text )

static

                                                   {
        try {
            String rez = new String(Base64.encodeBase64(text.getBytes("UTF-8")));
            return rez;
        } catch (UnsupportedEncodingException e) {
            return null;
        }
    }

convertToHex()

static String convertToHex ( byte[]  data )

staticprivate

                                                    {
        StringBuffer buf = new StringBuffer();
        for (int i = 0; i < data.length; i++) {
            int halfbyte = (data[i] >>> 4) & 0x0F;
            int two_halfs = 0;
            do {
                if ((0 <= halfbyte) && (halfbyte <= 9)) {
                    buf.append((char) ('0' + halfbyte));
                } else {
                    buf.append((char) ('a' + (halfbyte - 10)));
                }
                halfbyte = data[i] & 0x0F;
            } while (two_halfs++ < 1);
        }
        return buf.toString();
    }

Referenced by Crypt.SHA1().

generateHash()

static String generateHash ( ) throws NoSuchAlgorithmException, UnsupportedEncodingException

static

                                                                                                      {
        UUID newUUID = UUID.randomUUID();
        String pwd = MD5(newUUID.toString());
        pwd = pwd.substring(0, 25);
        return pwd;
    }

References Crypt.MD5().

Referenced by AuthResource.getHash(), and SQlite.insertUser().

MD5()

static String MD5 ( String  text ) throws NoSuchAlgorithmException, UnsupportedEncodingException

static

                                                                                                        {
        MessageDigest md;
        md = MessageDigest.getInstance("MD5");
        md.update(text.getBytes());
        byte byteData[] = md.digest();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < byteData.length; i++) {
            sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
        }
        return sb.toString();
    }

Referenced by Crypt.generateHash().

SHA1()

static String SHA1 ( String  text ) throws NoSuchAlgorithmException, UnsupportedEncodingException

static

                                                                                                         {
        MessageDigest md;
        md = MessageDigest.getInstance("SHA-1");
        byte[] sha1hash = new byte[40];
        md.update(text.getBytes("iso-8859-1"), 0, text.length());
        sha1hash = md.digest();
        return convertToHex(sha1hash);
    }

References Crypt.convertToHex().

Referenced by AuthResource.getHash(), SQlite.getUserInfoAndCheckPassword(), and SQlite.insertUser().