[URGENT]SHA Encryption System...need urgent helps

Hello, everyone

is there anyone can help me with my project??I'm developing a SHA Encryption System using java. But, I'm facing problems on how to develop it...

I need helps...

The system will show SHA Encryption steps by steps...:confused:
it's a little bit like what is show in this address: My SHA-1 Example

can anyone help me??PLEASE!!!This is very urgent!!

Urgent? On a Sunday? You must be kidding ...

kind regards,

Jos

it's very urgent...i try so hard b4 to develop it but end up with nothing..

need to submit the system this wednesday...:(

Quote:

---

Originally Posted by java_idiot

The system will show SHA Encryption steps by steps...:confused: it's a little bit like what is show in this address: My SHA-1 Example

---

opening the link and then looking at the source code of the html page you can see the javascript code that have been used for the SHA-1 example. do you have problems translating the code from javascript to java? and can you please post the java code you have till now. there is no "little bit like": either your code act equals like SHA-1 or you specify what you want.

Quote:

---

do you have problems translating the code from javascript to java?

---

yes...i have the problems translating the code frm js to java...

but, there is a little error in this page also...

I need to develop SHA Encryption System that shows the steps of encrypting the data using SHA algorithm...the pseudocode can be found in this address: http://sammisoft.net/mboard/mboard/m...&order_da=desc

I don't know how to do these parts:

• append the bit '1' to the message
• append 0 ≤ k < 512 bits '0', so that the resulting message length (in bits) is congruent to 448 ≡ −64 (mod 512)
• append length of message (before pre-processing), in bits, as 64-bit big-endian integer
• break message into 512-bit chunks
• for each chunk:
  break chunk into sixteen 32-bit big-endian words w[i], 0 ≤ i ≤ 15
• Extend the sixteen 32-bit words into eighty 32-bit words:
  for i from 16 to 79
  w[i] = (w[i-3] xor w[i-8] xor w[i-14] xor w[i-16]) leftrotate 1

I use netbeans ide 6.8 to develop this system
I will show my coding in next post...

Look at RhinoScript. It's a plugin available to run JavaScript as Java using the JS code as a string and parsing it into a .java file

I don't know y i can't get the output same as the output in this address: My SHA-1 Example

:confused:

my coding is as follow:

• ChoicesAndMessage.java

import javax.swing.JOptionPane;
import SHA1.InitialHash;
import SHA1.Words;
import SHA1.calcHash;

public class ChoicesAndMessage extends javax.swing.JFrame {
shaEncrypt sha = new shaEncrypt();
Result shaOutput = new Result();
calcHash sha1Hash = new calcHash();
sha256calcHash s2Hash = new sha256calcHash();
String hex2, bin2;
String padBin, padHex, padHex2;
int count0,m_Len;
String padHexArray[];
long words[] = new long[80];
long s2Words[] = new long[64];
long s5Words[] = new long[80];
long s2K[] = new long [64];
long sha1HV[] = new long[80];
String shaWords[] = new String[80];
String s2w[] = new String[64];
String s5w[] = new String[80];
long a[] = new long[80];
long b[] = new long[80];
long c[] = new long[80];
long d[] = new long[80];
long e[] = new long[80];
String Hash[] = new String[80];

/** Creates new form ChoicesAndMessage */
public ChoicesAndMessage() {
initComponents();
}

/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() {

cbSelection = new javax.swing.JComboBox();
jLabel1 = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
txtMessage = new javax.swing.JTextPane();
btnEncrypt = new javax.swing.JButton();
btnClear = new javax.swing.JButton();

setDefaultCloseOperation(javax.swing.WindowConstan ts.EXIT_ON_CLOSE);
setTitle("SHA Encryption System_Choices and Message");
setName("Choices and Message"); // NOI18N

cbSelection.setFont(new java.awt.Font("Tahoma", 0, 12));
cbSelection.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Please select a SHA Algorithm", "SHA-1", "SHA-256", "SHA-512" }));
cbSelection.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cbSelectionActionPerformed(evt);
}
});

jLabel1.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel1.setText("Message to be encrypted:");

txtMessage.setEnabled(false);
jScrollPane1.setViewportView(txtMessage);

btnEncrypt.setFont(new java.awt.Font("Tahoma", 0, 12));
btnEncrypt.setText("Encrypt");
btnEncrypt.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnEncryptActionPerformed(evt);
}
});

btnClear.setFont(new java.awt.Font("Tahoma", 0, 12));
btnClear.setText("Clear");
btnClear.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnClearActionPerformed(evt);
}
});

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout .Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(105, 105, 105)
.addComponent(cbSelection, javax.swing.GroupLayout.PREFERRED_SIZE, 200, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 409, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)))
.addContainerGap())
.addGroup(layout.createSequentialGroup()
.addGap(123, 123, 123)
.addComponent(btnEncrypt)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.UNRELATED)
.addComponent(btnClear, javax.swing.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
.addGap(154, 154, 154))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout .Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(31, 31, 31)
.addComponent(cbSelection, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(23, 23, 23)
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 180, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.BASELINE)
.addComponent(btnEncrypt)
.addComponent(btnClear))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_S IZE, Short.MAX_VALUE))
);

pack();
}// </editor-fold>//GEN-END:initComponents

private void btnClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnClearActionPerformed
// TODO add your handling code here:
txtMessage.setText("");
}//GEN-LAST:event_btnClearActionPerformed

private void cbSelectionActionPerformed(java.awt.event.ActionEv ent evt) {//GEN-FIRST:event_cbSelectionActionPerformed
// TODO add your handling code here:
if (cbSelection.getSelectedIndex()== 0)
{
txtMessage.setEnabled(false);
}
else
{
txtMessage.setEnabled(true);
}
}//GEN-LAST:event_cbSelectionActionPerformed

private void btnEncryptActionPerformed(java.awt.event.ActionEve nt evt) {//GEN-FIRST:event_btnEncryptActionPerformed
// TODO add your handling code here:

String message = txtMessage.getText();


if (cbSelection.getSelectedIndex() == 0)
{
JOptionPane.showMessageDialog(null, "Please select a SHA Algorithm","No Selection Made",JOptionPane.WARNING_MESSAGE);
}
else if (cbSelection.getSelectedIndex() == 1)
{
Words sha1Words = new Words();
shaOutput.txtResults.append("<<< Initialize variables >>>\n");
shaOutput.txtResults.append("H0: "+Integer.toHexString(InitialHash.h0).toUpperCase( ));
shaOutput.txtResults.append("\nH1: "+Integer.toHexString(InitialHash.h1).toUpperCase( ));
shaOutput.txtResults.append("\nH2: "+Integer.toHexString(InitialHash.h2).toUpperCase( ));
shaOutput.txtResults.append("\nH3: "+Integer.toHexString(InitialHash.h3).toUpperCase( ));
shaOutput.txtResults.append("\nH4: "+Integer.toHexString(InitialHash.h4).toUpperCase( )+ "\n\n");
shaOutput.txtResults.append("<<< Message Padding >>>\n");
shaOutput.txtResults.append("-->Append '1' to message\n");
shaOutput.txtResults.append("-->Append 0<=k<=512 '0's to message\n");
shaOutput.txtResults.append("-->Append length of message in bits\n");

if(message.length()== 0)
{
int reply = JOptionPane.showConfirmDialog(null, "The message field is left blank.\nThe system will continue with Message Padding process ! ! !\nClick Yes if you wish to continue, No to stay remain on this page...", "Message Field Left Blank", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE);

if(reply == JOptionPane.YES_OPTION){
//sha.setMessage(message);
shaOutput.txtM_Hex.setText("No message to be encrypted...");
shaOutput.txtM_Bin.setText("No message to be encrypted...");
padBin = "1";
bin2 = padBin;
while (bin2.length()!=512)
{
padBin = "0";
bin2 = bin2+padBin;
count0 += padBin.replaceAll("[^0]","").length();
}
shaOutput.txtResults.append("No of '0's padded: "+Integer.toString(count0));

shaOutput.txtResults.append("\nPadded Message (in Binary): \n");

char afterPaddingBin [] = new char[bin2.length()];

afterPaddingBin = bin2.toCharArray();
int count = 1;
for(int i=0; i<bin2.length(); i++){
shaOutput.txtResults.append(""+afterPaddingBin[i]);
if(count%8==0){
shaOutput.txtResults.append(" ");
}
count++;
}
String sub;
String isub;
int sub2;
shaOutput.txtResults.append("\n\nPadded Message (in Hexadecimal): \n");

for (int i=0; i<bin2.length(); i+=8)
{
sub = bin2.substring(i,i+8);
sub2 = Integer.parseInt(sub,2);
isub = Integer.toHexString(sub2);
if (isub.length() == 1)
{
isub = "0"+isub;
}
padHex += isub;
padHex = padHex.replaceAll("null", "");
}

char afterPaddingHex [] = new char[padHex.length()];
afterPaddingHex = padHex.toCharArray();
for(int i=0; i<padHex.length(); i++){

padHex2 += afterPaddingHex[i];
if(count%8==0){
padHex2 = padHex2+" ";
}
count++;
padHex2 = padHex2.replaceAll("null", "");
}
shaOutput.txtResults.append(padHex2);
words = sha.getWords();
shaOutput.txtResults.append("\n<<< Words >>>");
for (int i=0; i<80; i++)
{
words = sha1Words.words(padHex2);

shaWords[i] = Long.toHexString(words[i]).toUpperCase();
while (shaWords[i].length()<8)
{
shaWords[i]="0"+shaWords[i];
}
if(shaWords[i].length()>8){
int xtra = shaWords[i].length() - 8;
shaWords[i]=shaWords[i].substring(xtra, shaWords[i].length());
}
shaOutput.txtResults.append("\nWord["+i+"]:"+shaWords[i]);
Hash = sha1Hash.doHash(words);
shaOutput.setVisible(true);
setVisible(false);


}


}else{
if(message.length()==0){
txtMessage.requestFocusInWindow();
}
}
}

else if (message.length()>55)
{
JOptionPane.showMessageDialog(null, "Message entered is too long","Message exceeds limit length",JOptionPane.WARNING_MESSAGE);
txtMessage.requestFocusInWindow();
txtMessage.selectAll();
}

else
{
shaOutput.txtM_Hex.setText("");
for (int i=0; i< message.length(); i++)
{
char c = message.charAt(i);
int j = (int)c;
String hex = Integer.toHexString(j);
String bin = Integer.toBinaryString(j);
hex2 += hex + " ";
hex2 = hex2.replaceAll("null", "");
while (bin.length()<8)
{
bin = "0" + bin;
bin2 += bin;
}
bin2 = bin2 + " ";
bin2 = bin2.replaceAll("null", "");
shaOutput.txtM_Hex.setText(hex2);
shaOutput.txtM_Bin.setText(bin2);
m_Len = message.length()*8;
shaOutput.txtM_Len.setText(Integer.toString(m_Len) );
}
bin2 = bin2.replaceAll(" ", "");
bin2 = bin2 +"1";
while (bin2.length()<(448))
{
padBin = "0";
bin2 = bin2+padBin;
count0 += padBin.replaceAll("[^0]","").length();
}
shaOutput.txtResults.append("\nNo of '0's padded: "+Integer.toString(count0));
String mLenBin = Integer.toBinaryString(m_Len);
while (mLenBin.length()<64)
{
mLenBin = "0"+mLenBin;
}
bin2 = bin2+mLenBin;
shaOutput.txtResults.append("\nPadded Message (in Binary): \n");
char afterPaddingBin [] = new char[bin2.length()];

afterPaddingBin = bin2.toCharArray();
int count = 1;
for(int i=0; i<bin2.length(); i++){
shaOutput.txtResults.append(""+afterPaddingBin[i]);
if(count%8==0){
shaOutput.txtResults.append(" ");
}
count++;
}
String sub;
String isub;
int sub2;
shaOutput.txtResults.append("\n\nPadded Message (in Hexadecimal): \n");

for (int i=0; i<bin2.length(); i+=8)
{
sub = bin2.substring(i,i+8);
sub2 = Integer.parseInt(sub,2);
isub = Integer.toHexString(sub2);
if (isub.length() == 1)
{
isub = "0"+isub;
}
padHex += isub;
padHex = padHex.replaceAll("null", "");
}

char afterPaddingHex [] = new char[padHex.length()];
afterPaddingHex = padHex.toCharArray();
for(int i=0; i<padHex.length(); i++){

padHex2 += afterPaddingHex[i];
if(count%8==0){
padHex2 = padHex2+" ";
}
count++;
padHex2 = padHex2.replaceAll("null", "");
}
shaOutput.txtResults.append(padHex2);
words = sha.getWords();



for (int i=0; i<80; i++)
{
words = sha1Words.words(padHex2);
Hash = sha1Hash.doHash(words);
shaWords[i] = Long.toHexString(words[i]).toUpperCase();
while (shaWords[i].length()<8)
{
shaWords[i]="0"+shaWords[i];
}
if(shaWords[i].length()>8){
int xtra = shaWords[i].length() - 8;
shaWords[i]=shaWords[i].substring(xtra, shaWords[i].length());
}
shaOutput.txtResults.append("\nWord["+i+"]:"+shaWords[i]);


}
shaOutput.setVisible(true);
}
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new ChoicesAndMessage().setVisible(true);
}
});
}

// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton btnClear;
public javax.swing.JButton btnEncrypt;
public javax.swing.JComboBox cbSelection;
private javax.swing.JLabel jLabel1;
private javax.swing.JScrollPane jScrollPane1;
public javax.swing.JTextPane txtMessage;
// End of variables declaration//GEN-END:variables

}

• InitialHash.java

public class InitialHash {

public static int h0 = 0x67452301;
public static int h1 = 0xefcdab89;
public static int h2 = 0x98badcfe;
public static int h3 = 0x10325476;
public static int h4 = 0xc3d2e1f0;

}

• Words.java

import Main.shaEncrypt;

public class Words {

long words1[]= new long[64];
long words2[] = new long[64];
long words[] = new long[80];
String sha1Words[] = new String[80];
public String[] msg;
long msg1[] = new long[16];
String w[];
shaEncrypt sha = new shaEncrypt();
public long[] words(String padHex2)
{
msg = padHex2.split(" ");
for (String a: msg)
{
System.out.println(a);
}

for (int i=0; i<80; i++)
{
if(i < 16)
{
msg1[i] = Long.parseLong(msg[i],16);
words[i] = msg1[i];
sha1Words[i] = Long.toHexString(words[i]);
while (sha1Words[i].length()<8)
{
sha1Words[i]="0"+sha1Words[i];
}
System.out.println("w["+i+"]: " +sha1Words[i]);
}


else if (i >= 16 && i<80)
{
int count = 0;
words1[count]= words[i-3]^words[i-8]^words[i-14]^words[i-16];
String binWords = Long.toBinaryString(words1[count]);
while (binWords.length()< 32)
{
binWords = "0" + binWords;
}
if (binWords.length()>32)
{
int xtra = binWords.length()-32;
binWords = binWords.substring(xtra, binWords.length());
}

words1[count] = Long.parseLong(binWords,2);
words2[count]= words1[count]<<1|words1[count]>>>31;

words[i] = words2[count];
sha1Words[i] = Long.toHexString(words[i]);
while (sha1Words[i].length()<8)
{
sha1Words[i]="0"+sha1Words[i];
}
if(sha1Words[i].length()>8){
int j = sha1Words[i].length() - 8;
sha1Words[i]=sha1Words[i].substring(j, sha1Words[i].length());

}

System.out.println("w["+i+"]: " +sha1Words[i]);

count++;

}
}

sha.setWords(words);


return words;
}

}

• calcHash.java

public class calcHash {


Functions funcs = new Functions();
shaEncrypt sha = new shaEncrypt();
long temp[] = new long[81];
int i;
long h0,h1,h2,h3,h4;
String hashV[] = new String[80];
String digest;
long a[] = new long[81];
long b[] = new long[81];
long c[] = new long[81];
long d[] = new long[81];
long e[] = new long[81];
//long w[] = new long[80];
long func[] = new long[81];
String wordHex[] = new String[80];


public String[] doHash(long []w)
{

a[0]=InitialHash.h0;
b[0]=InitialHash.h1;
c[0]=InitialHash.h2;
d[0]=InitialHash.h3;
e[0]=InitialHash.h4;
for (i=0; i<80; i++)
{
if (i<20)
{


func[i] = (b[i]&c[i])|((~b[i])&d[i]);
int K = 1518500249;

temp[i+1] = (a[i]<<5|a[i]>>>27)+func[i]+e[i]+w[i]+K;
e[i+1]=d[i];
d[i+1]=c[i];
c[i+1]=((b[i]<< 30)|(b[i]>>> 32));
b[i+1]=a[i];
a[i+1]=temp[i+1];

System.out.println("func============="+Long.toHexS tring(func[i]));
hashV[i] = "A = ["+i+"]:"+Long.toHexString(a[i+1])+"\tB = "+Long.toHexString(b[i+1])+"\tC = "+Long.toHexString(c[i+1])+"\tD = "+Long.toHexString(d[i+1])+"\tE = "+Long.toHexString(e[i+1]);
System.out.println(hashV[i]);

}

else if (i >= 20 &&i<40)
{
func[i] = b[i]^c[i]^d[i];
int K = 1859775393;
temp[i+1] = (a[i]<<5|a[i]>>>27)+func[i]+e[i]+w[i]+K;
e[i+1]=d[i];
d[i+1]=c[i];
c[i+1]=(b[i]<< 30);
b[i+1]=a[i];
a[i+1]=temp[i+1];

System.out.println("func============="+func[i]);
hashV[i] = "A = "+Long.toHexString(a[i+1])+"B = "+Long.toHexString(b[i+1])+"C = "+Long.toHexString(c[i+1])+"D = "+Long.toHexString(d[i+1])+"E = "+Long.toHexString(e[i+1]);
System.out.println(hashV[i]);
}

else if (i >= 40&& i<60)
{
func[i] = (b[i]&c[i])|(b[i]&d[i])|(c[i]&d[i]);
int K = -1894007588;
temp[i+1] = (a[i]<<5|a[i]>>>27)+func[i]+e[i]+w[i]+K;
e[i+1]=d[i];
d[i+1]=c[i];
c[i+1]=(b[i]<< 30);
b[i+1]=a[i];
a[i+1]=temp[i+1];

System.out.println("func============="+func[i]);

hashV[i+1] = "A = "+Long.toHexString(a[i+1])+"B = "+Long.toHexString(b[i+1])+"C = "+Long.toHexString(c[i+1])+"D = "+Long.toHexString(d[i+1])+"E = "+Long.toHexString(e[i+1]);
System.out.println(hashV[i]);
}

else if (i >= 60&& i<80)
{
func[i] = b[i]^c[i]^d[i];
int K = -899497514;
temp[i+1] = (a[i]<<5|a[i]>>>27)+func[i]+e[i]+w[i]+K;
e[i+1]=d[i];
d[i+1]=c[i];
c[i+1]=(b[i]<< 30);
b[i+1]=a[i];
a[i+1]=temp[i+1];

System.out.println("func============="+func[i]);
hashV[i] = "A = ["+i+"]:"+Long.toHexString(a[i+1])+"B = "+Long.toHexString(b[i+1])+"C = "+Long.toHexString(c[i+1])+"D = "+Long.toHexString(d[i+1])+"E = "+Long.toHexString(e[i+1]);
System.out.println(hashV[i]);
}

h0=InitialHash.h0;
h1=InitialHash.h1;
h2=InitialHash.h2;
h3=InitialHash.h3;
h4=InitialHash.h4;
h0 += a[79];
h1 += b[79];
h2 += c[79];
h3 += d[79];
h4 += e[79];
}

//System.out.println(Long.toHexString(h0)+" "+h1+" "+h2+" "+h3+" "+h4);

sha.setH0(h0);
sha.setH1(h1);
sha.setH2(h2);
sha.setH3(h3);
sha.setH4(h4);

digest = Long.toHexString(h0) + " "+Long.toHexString(h1)+" "+Long.toHexString(h2)+" "+Long.toHexString(h3)+" "+Long.toHexString(h4);
sha.setDigest(digest);
System.out.println("Message digest: "+digest);
return hashV;
}

}


**I think the problems are at calcHash.java
But, I don't know what are wrong...the Hash values are not the same as in My SHA-1 Example :(