主要问题是：
Tool.java:508: <identifier> expected
static private Vector<Integer> getCode(String data, int len) {
^
Tool.java:698: ';' expected
static private Vector<Integer> getCode(String data, int len) {
Vector<Integer> v = new Vector<Integer>();
if (len >= data.length()) {
v.add(new Integer(-1));
v.add(new Integer(len));
return v;
}
int c = (int)hex2dec(data.charAt(len++), data.charAt(len++)); int code;
if(bitsLeftOver) {
code = (leftOver<<8)+c;
} else {
int d = (int)hex2dec(data.charAt(len++), data.charAt(len++));
code = (c<<4)+(d>>4);
leftOver = d&15;
}
bitsLeftOver = !bitsLeftOver;
v.add(new Integer(code));
v.add(new Integer(len));
return v;
} static public String LZW2base(String data) {
int codeUsed = 256;
int[] s = new int[4096];
Element[] h = new Element[4096];
String result = "";
int len = 0; bitsLeftOver = false;
leftOver = 0;
Vector<Integer> v = getCode(data, len);
int pcode = v.get(0).intValue();
len = v.get(1).intValue();
int ccode;
if(pcode>=0){
s[0] = pcode;
result += (char)(s[0]);
int size = 0; do{
v = getCode(data, len);
ccode = v.get(0).intValue();
len = v.get(1).intValue();
if(ccode<0)break;
if(ccode<codeUsed){
int code = ccode;
size = -1;
while(code>=256){
s[++size]=h[code].suffix;
code = h[code].prefix;
}
s[++size]=code;
for(int i=size; i>=0; i--)
result += (char)s[i];
if(codeUsed<4096) {
h[codeUsed++] = new Element(pcode, s[size]);
}
}
else{
h[codeUsed++] = new Element(pcode, s[size]); int code = ccode;
size = -1;
while(code>=256){
s[++size]=h[code].suffix;
code = h[code].prefix;
}
s[++size]=code;
for(int i=size; i>=0; i--)
result += (char)s[i];
}
pcode = ccode;
}while(true);
}
return result;
}
static public String base2string(String data) {
int remainder = 0, i, a, b, c, d;
String result; while (data.length() % 4 > 0) {
data = 'A' + data;
} if (data.charAt(data.length() - 2) == '=') {
remainder = 1;
data = data.substring(0, data.length() - 2) + (char) (0)
+ (char) (0);
} else if (data.charAt(data.length() - 1) == '=') {
remainder = 2;
data = data.substring(0, data.length() - 1) + (char) (0);
} result = "";
for (i = 0; i < data.length() / 4; i++) {
a = Tool.indexOfBase(data.charAt(i * 4));
b = Tool.indexOfBase(data.charAt(i * 4 + 1));
c = Tool.indexOfBase(data.charAt(i * 4 + 2));
d = Tool.indexOfBase(data.charAt(i * 4 + 3)); result = result + (char) ((a << 2 & 0xfc) | (b >> 4 & 0x03));
result = result + (char) ((b << 4 & 0xf0) | (c >> 2 & 0x0f));
result = result + (char) ((c << 6 & 0xc0) | (d & 0x3f));
} if (remainder == 1) {
result = result.substring(0, result.length() - 2);
} else if (remainder == 2) {
result = result.substring(0, result.length() - 1);
} return result;
}
static public BigInteger genSeed(int length) {
char[] charset = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
int l = (length + 3) / 4;
BigInteger base = new BigInteger("2").pow(length);
String result = "";
for (int i = 0; i < l; i++) {
int index = (int)(Math.random() * 16);
result = result + charset[index];
}
return new BigInteger(result, 16).mod(base);
}
static public BigInteger genLess(BigInteger max) {
BigInteger result = genSeed(max.bitLength());
for (int i = max.bitLength(); i >= 0; i--)
if (Math.random() * 2 >= 1) {
result.clearBit(i);
break;
}
return result;
}
static public BigInteger sha(BigInteger message) {
MessageDigest md;
try {
byte[] mb = message.toByteArray();
byte[] data = new byte[mb.length - 1];
for (int i = 1; i < mb.length; i++)
data[i - 1] = mb[i]; md = MessageDigest.getInstance("SHA-1");
md.update(data);
byte[] digest = md.digest();
String result = "";
for (int i = 0; i < digest.length; i++)
result = result + dec2hex(digest[i]); return new BigInteger(result, 16);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
}
} static public String saperateString(String data, int step) {
String result = "";
for (int t = 0, i = data.length() - 1; i >= 0; i--, t++) {
if (t == step) {
result = " " + result;
t = 0;
}
result = data.charAt(i) + result;
}
return result;
}}
这只是从508行开始的代码
Tool.java:508: <identifier> expected
static private Vector<Integer> getCode(String data, int len) {
^
Tool.java:698: ';' expected
static private Vector<Integer> getCode(String data, int len) {
Vector<Integer> v = new Vector<Integer>();
if (len >= data.length()) {
v.add(new Integer(-1));
v.add(new Integer(len));
return v;
}
int c = (int)hex2dec(data.charAt(len++), data.charAt(len++)); int code;
if(bitsLeftOver) {
code = (leftOver<<8)+c;
} else {
int d = (int)hex2dec(data.charAt(len++), data.charAt(len++));
code = (c<<4)+(d>>4);
leftOver = d&15;
}
bitsLeftOver = !bitsLeftOver;
v.add(new Integer(code));
v.add(new Integer(len));
return v;
} static public String LZW2base(String data) {
int codeUsed = 256;
int[] s = new int[4096];
Element[] h = new Element[4096];
String result = "";
int len = 0; bitsLeftOver = false;
leftOver = 0;
Vector<Integer> v = getCode(data, len);
int pcode = v.get(0).intValue();
len = v.get(1).intValue();
int ccode;
if(pcode>=0){
s[0] = pcode;
result += (char)(s[0]);
int size = 0; do{
v = getCode(data, len);
ccode = v.get(0).intValue();
len = v.get(1).intValue();
if(ccode<0)break;
if(ccode<codeUsed){
int code = ccode;
size = -1;
while(code>=256){
s[++size]=h[code].suffix;
code = h[code].prefix;
}
s[++size]=code;
for(int i=size; i>=0; i--)
result += (char)s[i];
if(codeUsed<4096) {
h[codeUsed++] = new Element(pcode, s[size]);
}
}
else{
h[codeUsed++] = new Element(pcode, s[size]); int code = ccode;
size = -1;
while(code>=256){
s[++size]=h[code].suffix;
code = h[code].prefix;
}
s[++size]=code;
for(int i=size; i>=0; i--)
result += (char)s[i];
}
pcode = ccode;
}while(true);
}
return result;
}
static public String base2string(String data) {
int remainder = 0, i, a, b, c, d;
String result; while (data.length() % 4 > 0) {
data = 'A' + data;
} if (data.charAt(data.length() - 2) == '=') {
remainder = 1;
data = data.substring(0, data.length() - 2) + (char) (0)
+ (char) (0);
} else if (data.charAt(data.length() - 1) == '=') {
remainder = 2;
data = data.substring(0, data.length() - 1) + (char) (0);
} result = "";
for (i = 0; i < data.length() / 4; i++) {
a = Tool.indexOfBase(data.charAt(i * 4));
b = Tool.indexOfBase(data.charAt(i * 4 + 1));
c = Tool.indexOfBase(data.charAt(i * 4 + 2));
d = Tool.indexOfBase(data.charAt(i * 4 + 3)); result = result + (char) ((a << 2 & 0xfc) | (b >> 4 & 0x03));
result = result + (char) ((b << 4 & 0xf0) | (c >> 2 & 0x0f));
result = result + (char) ((c << 6 & 0xc0) | (d & 0x3f));
} if (remainder == 1) {
result = result.substring(0, result.length() - 2);
} else if (remainder == 2) {
result = result.substring(0, result.length() - 1);
} return result;
}
static public BigInteger genSeed(int length) {
char[] charset = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
int l = (length + 3) / 4;
BigInteger base = new BigInteger("2").pow(length);
String result = "";
for (int i = 0; i < l; i++) {
int index = (int)(Math.random() * 16);
result = result + charset[index];
}
return new BigInteger(result, 16).mod(base);
}
static public BigInteger genLess(BigInteger max) {
BigInteger result = genSeed(max.bitLength());
for (int i = max.bitLength(); i >= 0; i--)
if (Math.random() * 2 >= 1) {
result.clearBit(i);
break;
}
return result;
}
static public BigInteger sha(BigInteger message) {
MessageDigest md;
try {
byte[] mb = message.toByteArray();
byte[] data = new byte[mb.length - 1];
for (int i = 1; i < mb.length; i++)
data[i - 1] = mb[i]; md = MessageDigest.getInstance("SHA-1");
md.update(data);
byte[] digest = md.digest();
String result = "";
for (int i = 0; i < digest.length; i++)
result = result + dec2hex(digest[i]); return new BigInteger(result, 16);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
}
} static public String saperateString(String data, int step) {
String result = "";
for (int t = 0, i = data.length() - 1; i >= 0; i--, t++) {
if (t == step) {
result = " " + result;
t = 0;
}
result = data.charAt(i) + result;
}
return result;
}}
这只是从508行开始的代码
//package src;import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Hashtable;
import java.util.Random;
import java.util.Vector;import javax.swing.BorderFactory;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.border.TitledBorder;class Element{
int prefix;
int suffix; public Element(int prefix, int suffix){
this.prefix = prefix;
this.suffix = suffix;
}
}public class Tool {
static public Dimension buttonSize = new Dimension(100, 28);
static public Dimension buttonSize2 = new Dimension(130, 28);
static private int leftOver = 0;
static private boolean bitsLeftOver = false;
static public char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8',
'9', 'A', 'B', 'C', 'D', 'E', 'F' }; static public char base64[] = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U',
'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', '+', '/' }; static public String dec2hex(int data) {
int a, b, c, d; if (data > 0xff) {
return null;
}// a = (data >> 12) & 0x000f;
// b = (data >> 8) & 0x000f;
c = (data >> 4) & 0x000f;
d = data & 0x000f;
//return "" + hex[a] + hex[b] + hex[c] + hex[d];
return "" + hex[c] + hex[d];
}// static public int hex2dec(char a, char b, char c, char d) {
// int ra, rb, rc, rd = 0;
// if ((a >= 'A') && (a <= 'F')) {
// ra = (int) (a - 'A' + 10);
// } else {
// ra = (int) (a - '0');
// }
// if ((b >= 'A') && (b <= 'F')) {
// rb = (int) (b - 'A' + 10);
// } else {
// rb = (int) (b - '0');
// }
// if ((c >= 'A') && (c <= 'F')) {
// rc = (int) (c - 'A' + 10);
// } else {
// rc = (int) (c - '0');
// }
// if ((d >= 'A') && (d <= 'F')) {
// rd = (int) (d - 'A' + 10);
// } else {
// rd = (int) (d - '0');
// }
// return ((ra << 12) | (rb << 8) | (rc << 4) | rd);
// }
// static public String dec2hex(byte data) {
// byte a, b;
// a = (byte) (data >> 4 & 0x0f);
// b = (byte) (data & 0x0f);
// return "" + hex[a] + hex[b];
// } static public int hex2dec(char a, char b) {
int ra, rb;
if ((a >= 'A') && (a <= 'F')) {
ra = (byte) (a - 'A' + 10);
} else {
ra = (byte) (a - '0');
}
if ((b >= 'A') && (b <= 'F')) {
rb = (byte) (b - 'A' + 10);
} else {
rb = (byte) (b - '0');
}
return ((ra << 4) | rb);
} static public int indexOfBase(char ch) {
if ((ch >= 'A') && (ch <= 'Z')) {
return (int) (ch - 'A');
} else if ((ch >= 'a') && (ch <= 'z')) {
return (int) (ch - 'a' + 26);
} else if ((ch >= '0') && (ch <= '9')) {
return (int) (ch - '0' + 26 + 26);
} else if (ch == '+') {
return 62;
} else if (ch == '/') {
return 63;
}
return 0;
} static public void add2bag(JPanel pane, Component com, int gx, int gy,
int gw, int gh, int pos, int fill) {
GridBagConstraints gbc = new GridBagConstraints();
gbc.weightx = gbc.weighty = 100;
gbc.gridx = gx;
gbc.gridy = gy;
gbc.gridwidth = gw;
gbc.gridheight = gh;
gbc.anchor = pos;
gbc.fill = fill;
pane.add(com, gbc);
} static public File selectFile(Component parent, String ext, String des,
boolean isOpen) {
JFileChooser fc = new JFileChooser();
fc.setCurrentDirectory(new File("."));
fc.setFileFilter(new KeyFilter(ext, des));
int re;
if (isOpen) {
re = fc.showOpenDialog(parent);
} else {
re = fc.showSaveDialog(parent);
}
if (re == JFileChooser.APPROVE_OPTION) {
return fc.getSelectedFile();
} else {
return null;
}
} static public String readFile(Component parent, File file) {
if (file == null) {
return null;
}
try {
FileInputStream in = new FileInputStream(file.getPath());
byte[] data = new byte[in.available()];
in.read(data);
in.close();
return new String(data);
} catch (Exception e) {
JOptionPane.showMessageDialog(parent, "文件读取失败");
return null;
}
} static public void writeFile(Component parent, File file, String str) {
if (file == null) {
return;
}
try {
FileOutputStream out = new FileOutputStream(file.getPath());
byte[] data = str.getBytes();
out.write(data);
out.close();
} catch (Exception e) {
JOptionPane.showMessageDialog(parent, "文件写入失败");
}
} static public BigInteger string2big(String data) {
String result = "";
for (int i = 0; i < data.length(); i++) {
byte bs = (byte) data.charAt(i);
if ((bs & 0x80) > 0)
result = result + "1";
else
result = result + "0";
if ((bs & 0x40) > 0)
result = result + "1";
else
result = result + "0";
if ((bs & 0x20) > 0)
result = result + "1";
else
result = result + "0";
if ((bs & 0x10) > 0)
result = result + "1";
else
result = result + "0";
if ((bs & 0x08) > 0)
result = result + "1";
else
result = result + "0";
if ((bs & 0x04) > 0)
result = result + "1";
else
result = result + "0";
if ((bs & 0x02) > 0)
result = result + "1";
else
result = result + "0";
if ((bs & 0x01) > 0)
result = result + "1";
else
result = result + "0";
}
return new BigInteger(result, 2);
} static public String big2string(BigInteger data) {
String result = "";
byte[] bs = data.toByteArray();
result = new String(bs);
return result;
}
static public String string2hex(String data) {
String result = "";
String charset = "0123456789ABCDEF";
int i, t, j, k;
for (i = t = 0; i < data.length(); i++) {
t = (int) data.charAt(i);
j = (t & 0x0F);
k = (t & 0xF0) >> 4;
result += charset.charAt(k);
result += charset.charAt(j);
}
return result;
} static public String hex2string(String data) {
String result = "";
int i, t, j, k;
char ch1, ch2;
for (i = 0; i < data.length() / 2; i++) {
ch1 = data.charAt(i + i);
ch2 = data.charAt(i + i + 1);
if ((ch1 >= '0') && (ch1 <= '9'))
j = (int)(ch1 - '0');
else
j = (int)(ch1 - 'A') + 10;
if ((ch2 >= '0') && (ch2 <= '9'))
k = (int)(ch2 - '0');
else
k = (int)(ch2 - 'A') + 10;
t = (j << 4) + k; result += (char)t;
}
return result;
} static public String string2base(String data) {
int i, t, j, k;
String st = data, result = ""; if (remainder == 2) {
st = st + (char) (0);
} else if (remainder == 1) {
st = st + (char) (0) + (char) (0);
} for (i = t = 0; i < st.length() / 3; i++) {
t = (int) st.charAt(i * 3);
j = (int) st.charAt(i * 3 + 1);
k = (int) st.charAt(i * 3 + 2); result += Tool.base64[(t >> 2) & 0x3f];
result += Tool.base64[((t & 0x03) << 4) | ((j & 0xf0) >> 4)];
result += Tool.base64[((j & 0x0f) << 2) | ((k & 0xc0) >> 6)];
result += Tool.base64[k & 0x3f];
} if (remainder == 1) {
result = result.substring(0, result.length() - 2) + "==";
} else if (remainder == 2) {
result = result.substring(0, result.length() - 1) + "=";
}
return result;
} static public String big2base(BigInteger data) {
String result = "";
String st = data.toString(2);
String temp; while (st.length() % 24 > 0) {
st = "0" + st;
} while (st.length() > 0) {
temp = "00" + st.substring(0, 6); st = st.substring(6);
BigInteger val = new BigInteger(temp, 2);
result = result + base64[val.intValue()];
}
return result;
} static public BigInteger base2big(String data) {
String temp, result = "";
int i, t; for (i = 0; i < data.length(); i++) {
char ch = data.charAt(i);
for (t = 0; t < base64.length; t++) {
if (base64[t] == ch) {
break;
}
}
if (t == base64.length) {
t = 0;
}
temp = Integer.toBinaryString(t);
while (temp.length() < 8) {
temp = "0" + temp;
}
result = result + temp.substring(2);
}
return new BigInteger(result, 2);
} static public BigInteger genRandom(BigInteger minNumber,
BigInteger maxNumber) {
Random ran = new Random();
BigInteger min = minNumber;
BigInteger max = maxNumber; while (min.compareTo(max) < 0) {
if (ran.nextInt() > 0) {
max = min.add(max).divide(new BigInteger("2"));
} else {
min = min.add(max).divide(new BigInteger("2")).add(
BigInteger.ONE);
}
}
return min;
} static public JPanel addSpace(Component com) {
JPanel p = new JPanel(new BorderLayout());
p.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
p.add(com);
return p;
} static public JPanel addTitle(Component com, String title) {
JPanel p = new JPanel(new BorderLayout());
p.add(com);
p.setBorder(new TitledBorder(title));
return p;
} static public String bytes2string(byte[] data) {
String result = "";
for (int i = 0; i < data.length; i++) {
if ((data[i] & 0x80) > 0) {
result = result + "1";
} else {
result = result + "0";
}
if ((data[i] & 0x40) > 0) {
result = result + "1";
} else {
result = result + "0";
}
if ((data[i] & 0x20) > 0) {
result = result + "1";
} else {
result = result + "0";
}
if ((data[i] & 0x10) > 0) {
result = result + "1";
} else {
result = result + "0";
}
if ((data[i] & 0x08) > 0) {
result = result + "1";
} else {
result = result + "0";
}
if ((data[i] & 0x04) > 0) {
result = result + "1";
} else {
result = result + "0";
}
if ((data[i] & 0x02) > 0) {
result = result + "1";
} else {
result = result + "0";
}
if ((data[i] & 0x01) > 0) {
result = result + "1";
} else {
result = result + "0";
}
}
return result;
} static public byte[] string2bytes(String data) {
String st = data, temp;
while (st.length() % 8 > 0) {
st = "0" + st;
}
byte[] result = new byte[st.length() / 8];
for (int i = 0; i < result.length; i++) {
temp = st.substring(0, 8);
st = st.substring(8);
int j = 0;
for (int t = 0; t < 8; t++) {
j = j << 1;
if (temp.charAt(t) == '1') {
j = j | 1;
}
}
result[i] = (byte) j;
}
return result;
} static public String base2LZW(Component parent, String data) {
Hashtable table = new Hashtable();
for(int i=0; i< 256; i++)
table.put(new Integer(i), new Integer(i)); leftOver = 0;
bitsLeftOver = false;
int codeUsed = 256; int len = 0;
String result = "";
if(len < data.length()){
int c = (int)data.charAt(len++);
int pcode = c;
while(len < data.length()){
c = (int)data.charAt(len++);
int k = (pcode<<8)+c;
Integer e = (Integer)table.get(new Integer(k));
if(e==null){
String temp = Tool.genCode(pcode);
result += temp;
if(codeUsed<4096) {
table.put(new Integer((pcode<<8)+c), new Integer(codeUsed++));
}
pcode = c;
} else {
pcode = e.intValue();
}
} String temp = Tool.genCode(pcode);
result += temp;
if(bitsLeftOver)
result += dec2hex(leftOver << 4);
}
return result;
}
static public String genCode(int data) {
int c,d;
if(bitsLeftOver){
d = data & 255;
c = (leftOver << 4)+(data >> 8);
bitsLeftOver = false;
return dec2hex(c) + "" + dec2hex(d);
}
else{
leftOver = data & 15;
c = data >> 4;
bitsLeftOver = true;
return dec2hex(c);
}
}
Vector<Integer> v = new Vector<Integer>();
if (len >= data.length()) {
v.add(new Integer(-1));
v.add(new Integer(len));
return v;
}
int c = (int)hex2dec(data.charAt(len++), data.charAt(len++)); int code;
if(bitsLeftOver) {
code = (leftOver<<8)+c;
} else {
int d = (int)hex2dec(data.charAt(len++), data.charAt(len++));
code = (c<<4)+(d>>4);
leftOver = d&15;
}
bitsLeftOver = !bitsLeftOver;
v.add(new Integer(code));
v.add(new Integer(len));
return v;
} static public String LZW2base(String data) {
int codeUsed = 256;
int[] s = new int[4096];
Element[] h = new Element[4096];
String result = "";
int len = 0; bitsLeftOver = false;
leftOver = 0;
Vector<Integer> v = getCode(data, len);
int pcode = v.get(0).intValue();
len = v.get(1).intValue();
int ccode;
if(pcode>=0){
s[0] = pcode;
result += (char)(s[0]);
int size = 0; do{
v = getCode(data, len);
ccode = v.get(0).intValue();
len = v.get(1).intValue();
if(ccode<0)break;
if(ccode<codeUsed){
int code = ccode;
size = -1;
while(code>=256){
s[++size]=h[code].suffix;
code = h[code].prefix;
}
s[++size]=code;
for(int i=size; i>=0; i--)
result += (char)s[i];
if(codeUsed<4096) {
h[codeUsed++] = new Element(pcode, s[size]);
}
}
else{
h[codeUsed++] = new Element(pcode, s[size]); int code = ccode;
size = -1;
while(code>=256){
s[++size]=h[code].suffix;
code = h[code].prefix;
}
s[++size]=code;
for(int i=size; i>=0; i--)
result += (char)s[i];
}
pcode = ccode;
}while(true);
}
return result;
}
static public String base2string(String data) {
int remainder = 0, i, a, b, c, d;
String result; while (data.length() % 4 > 0) {
data = 'A' + data;
} if (data.charAt(data.length() - 2) == '=') {
remainder = 1;
data = data.substring(0, data.length() - 2) + (char) (0)
+ (char) (0);
} else if (data.charAt(data.length() - 1) == '=') {
remainder = 2;
data = data.substring(0, data.length() - 1) + (char) (0);
} result = "";
for (i = 0; i < data.length() / 4; i++) {
a = Tool.indexOfBase(data.charAt(i * 4));
b = Tool.indexOfBase(data.charAt(i * 4 + 1));
c = Tool.indexOfBase(data.charAt(i * 4 + 2));
d = Tool.indexOfBase(data.charAt(i * 4 + 3)); result = result + (char) ((a << 2 & 0xfc) | (b >> 4 & 0x03));
result = result + (char) ((b << 4 & 0xf0) | (c >> 2 & 0x0f));
result = result + (char) ((c << 6 & 0xc0) | (d & 0x3f));
} if (remainder == 1) {
result = result.substring(0, result.length() - 2);
} else if (remainder == 2) {
result = result.substring(0, result.length() - 1);
} return result;
}
static public BigInteger genSeed(int length) {
char[] charset = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
int l = (length + 3) / 4;
BigInteger base = new BigInteger("2").pow(length);
String result = "";
for (int i = 0; i < l; i++) {
int index = (int)(Math.random() * 16);
result = result + charset[index];
}
return new BigInteger(result, 16).mod(base);
}
static public BigInteger genLess(BigInteger max) {
BigInteger result = genSeed(max.bitLength());
for (int i = max.bitLength(); i >= 0; i--)
if (Math.random() * 2 >= 1) {
result.clearBit(i);
break;
}
return result;
}
static public BigInteger sha(BigInteger message) {
MessageDigest md;
try {
byte[] mb = message.toByteArray();
byte[] data = new byte[mb.length - 1];
for (int i = 1; i < mb.length; i++)
data[i - 1] = mb[i]; md = MessageDigest.getInstance("SHA-1");
md.update(data);
byte[] digest = md.digest();
String result = "";
for (int i = 0; i < digest.length; i++)
result = result + dec2hex(digest[i]); return new BigInteger(result, 16);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
}
} static public String saperateString(String data, int step) {
String result = "";
for (int t = 0, i = data.length() - 1; i >= 0; i--, t++) {
if (t == step) {
result = " " + result;
t = 0;
}
result = data.charAt(i) + result;
}
return result;
}}