AES等算法的代码

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 remainder = data.length() % 3; 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,