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| /*
*
* SignVerifyDoc.java
*
* This program
*
* - sign and verify with digital certificate which in PEM format, and
* private key in PKCS8, DER format, no matter certificate is validated
* or has been expired... if you don't use Java KeyStore
*
* Original: <http://www.comu.de/docs/tomcat_ssl/comu/ImportKey.java>
*
* Tip: openssl pkcs8 -topk8 -nocrypt -in U.KEY -out U.KEY.der -outform DER
*
* Date: July 2006
*
* Author: Terrence Miao <terrence.miao@xxxxxxxxx>
*
* Version: 1.0
*/
package asic;
import java.io.*;
import java.security.*;
import java.security.spec.*;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.util.Collection;
import java.util.Iterator;
import asic.util.Base64;
public class SignVerifyDoc {
/*
* Creates an InputStream from a file, and fills it with the complete
* file. Thus, available () on the returned InputStream will return the
* full number of bytes the file contains
*
* @param fname The filename
* @return The filled InputStream
* @exception IOException, if the Streams couldn't be created.
*/
private static InputStream fullStream (String fname) throws IOException {
FileInputStream fis = new FileInputStream (fname);
DataInputStream dis = new DataInputStream (fis);
byte[] bytes = new byte[dis.available ()];
dis.readFully (bytes);
ByteArrayInputStream bais = new ByteArrayInputStream (bytes);
return bais;
}
public static void main(String[] args) throws Exception {
if (args.length != 5) {
System.out.println(
"Usage: SignVerifyDoc -s|-v CertificateFile PrivateKeyFile "
+ "messagefile signaturefile");
return;
}
String options = args[0];
String certfile = args[1];
String keyfile = args[2];
String messagefile = args[3];
String signaturefile = args[4];
/*
try {
// loading private key file
InputStream infile = fullStream (keyfile);
byte[] key = new byte[infile.available ()];
infile.read (key, 0, infile.available ());
infile.close ();
} catch (Exception ex) {
ex.printStackTrace ();
}
*/
// KeyStore keystore = KeyStore.getInstance (KeyStore.getDefaultType ());
// keystore.load (new FileInputStream (keystorefile),
storepass.toCharArray ());
// Signature signature = Signature.getInstance("MD5withRSA");
// Signature signature = Signature.getInstance("DSA");
// Signature signature = Signature.getInstance("SHA1withRSA");
// ASIC use MD5 signature
Signature signature = Signature.getInstance("MD5withRSA");
if (options.indexOf("s") != -1) {
// KeyStore.PrivateKeyEntry pkEntry = (KeyStore.PrivateKeyEntry)
keystore.getEntry (alias, new KeyStore.PasswordProtection
(storepass.toCharArray ()));
// PrivateKey myPrivateKey = pkEntry.getPrivateKey ();
// PrivateKey myPrivateKey = (PrivateKey) keystore.getKey
(alias, storepass.toCharArray ());
// loading key
FileInputStream infile = new FileInputStream (keyfile);
int infilelength = infile.available ();
byte[] key = new byte[infilelength];
infile.read (key);
infile.close ();
String keyString = new String (key);
// System.out.println ("File lenght is: " + infilelength);
// System.out.println ("File content is:");
// System.out.println (keyString);
PKCS8EncodedKeySpec keyspec = new PKCS8EncodedKeySpec (key);
// System.out.println (keyspec.getFormat ());
KeyFactory kf = KeyFactory.getInstance ("RSA");
PrivateKey myPrivateKey = kf.generatePrivate (keyspec);
signature.initSign (myPrivateKey);
}
else {
// signature.initVerify (keystore.getCertificate(alias).getPublicKey());
// loading certificate chain
FileInputStream fis = new FileInputStream (certfile);
BufferedInputStream bis = new BufferedInputStream (fis);
CertificateFactory cf = CertificateFactory.getInstance ("X.509");
/*
Collection c = cf.generateCertificates (fis);
Iterator i = c.iterator ();
while (i.hasNext ()) {
Certificate cert = (Certificate) i.next();
}
*/
while (bis.available () > 0) {
Certificate cert = cf.generateCertificate (bis);
// System.out.println (cert.toString ());
signature.initVerify (cert.getPublicKey ());
}
}
FileInputStream in = new FileInputStream (messagefile);
byte[] buffer = new byte[8192];
int length;
while ((length = in.read (buffer)) != -1)
signature.update (buffer, 0, length);
in.close ();
if (options.indexOf ("s") != -1) {
FileOutputStream out = new FileOutputStream (signaturefile);
byte[] raw = signature.sign ();
// out.write(raw);
// out.write (Base64.encode (raw).getBytes ());
String signatureInPEM = new String (Base64.encode (raw));
for (int i = 1; i <= signatureInPEM.length (); i++) {
if ((i % 64) == 0) {
System.out.println (signatureInPEM.charAt (i-1));
out.write (signatureInPEM.charAt (i-1));
out.write ('\n');
}
else {
System.out.print (signatureInPEM.charAt (i-1));
out.write (signatureInPEM.charAt (i-1));
}
}
if ((signatureInPEM.length () % 64 ) != 0) {
System.out.println ();
out.write ('\n');
}
out.close();
}
else {
FileInputStream sigIn = new FileInputStream (signaturefile);
byte[] raw = new byte[sigIn.available ()];
sigIn.read (raw);
sigIn.close ();
String rawInString = new String (raw);
System.out.println ("The signature is:");
System.out.println (rawInString.replaceAll ("\n", ""));
// if (signature.verify(raw))
if (signature.verify (Base64.decode (rawInString.replaceAll ("\n", ""))))
System.out.println("The signature is good.");
else
System.out.println("The signature is bad.");
}
}
}
*/ |
