package com.drighetto.essai.bouncycastle;
import com.drighetto.essai.bouncycastle.asn1.Token;
import com.drighetto.essai.bouncycastle.cipher.SymmetricKeyCipher;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.util.ASN1Dump;
import org.bouncycastle.util.encoders.Base64;
import org.bouncycastle.util.encoders.Hex;
import java.util.Date;
/**
* Launch Class
*
* @author Dominique RIGHETTO<br>
* 11 mars 07<br>
*/
public class Sample01 {
/**
* Sample Entry point
*
* @author Dominique RIGHETTO<br>
* 11 mars 07<br>
* @param args
*/
@SuppressWarnings("boxing")
public static void main(String[] args) {
Token token1 = null;
Token token2 = null;
byte[] userId = "Dominique_Dominique".getBytes();
byte[] tempEncrypt = null;
byte[] tempDecrypt = null;
byte[] msgToCrypt = null;
byte[] tempEncodedBase64 = null;
byte[] tempDecodedBase64 = null;
byte[] tempBytes = null;
byte[] myBytes = new byte[15];
Date creationDate = new Date();
ASN1Sequence sequenceASN1 = null;
ASN1InputStream inASN1 = null;
SymmetricKeyCipher symmetricKeyCipher = null;
int i = 0;
int myInt = 30;
/*
* Sample : Creating a ASN1 structure, Encrypt and decrypt it with
* symmetric key algorithm (check equality before and after), Encode and
* decode it in Base64 (check equality before and after).
*/
System.out.println("---[Bouncy Castle Sample]---");
try {
/* ASN1 Sample */
myBytes[0] = 1;
myBytes[1] = 2;
myBytes[2] = 4;
myBytes[8] = -3;
System.out.println("[ASN1 Sample]");
System.out
.println("**Sample 1 : Conctructor with direct java object**");
token1 = new Token(userId, myBytes, myInt, creationDate);
inASN1 = new ASN1InputStream(token1.getEncoded());
System.out.println("DumpAsString on Java Object");
System.out.println(ASN1Dump.dumpAsString(token1));
System.out.println("DumpAsString on Object from ASN1InputStream");
System.out.println(ASN1Dump.dumpAsString(inASN1.readObject()));
// -
System.out.println("**Sample 2 : Conctructor with ASN1 sequence**");
sequenceASN1 = ASN1Sequence.getInstance(token1.toASN1Object());
token2 = new Token(sequenceASN1);
inASN1 = new ASN1InputStream(token2.getEncoded());
System.out.println("DumpAsString on Java Object");
System.out.println(ASN1Dump.dumpAsString(token2));
System.out.println("DumpAsString on Object from ASN1InputStream");
System.out.println(ASN1Dump.dumpAsString(inASN1.readObject()));
System.out.println("--");
System.out.println("------");
System.out.println("--\n");
/* $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ */
/* Cipher Sample */
System.out.println("[Cipher Sample]");
symmetricKeyCipher = new SymmetricKeyCipher();
token1 = new Token(userId, myBytes, myInt, creationDate);
msgToCrypt = token1.getEncoded();
System.out.println("Token As String before encryption : ");
System.out.println(ASN1Dump.dumpAsString(token1));
System.out.println("**Sample 1 : Encryption**");
System.out.println("Original bytes : ");
System.out.print("[");
for (i = 0; i < msgToCrypt.length; i++) {
System.out.print(msgToCrypt[i]);
System.out.print(";");
}
System.out.println("]");
tempEncrypt = symmetricKeyCipher.encrypt(msgToCrypt);
System.out.println("Encrypted bytes : ");
System.out.print("[");
for (i = 0; i < tempEncrypt.length; i++) {
System.out.print(tempEncrypt[i]);
System.out.print(";");
}
System.out.println("]");
System.out.println("Encrypted bytes in HEX :");
System.out.println(new String(Hex.encode(tempEncrypt)));
System.out.println("**Sample 2 : Decryption**");
tempDecrypt = symmetricKeyCipher.decrypt(tempEncrypt);
System.out.println("Decrypted bytes : ");
System.out.print("[");
for (i = 0; i < tempDecrypt.length; i++) {
System.out.print(tempDecrypt[i]);
System.out.print(";");
}
System.out.println("]\n");
System.out.println("Token As String after decryption : ");
sequenceASN1 = ASN1Sequence.getInstance(ASN1Object
.fromByteArray(tempDecrypt));
token2 = new Token(sequenceASN1);
System.out.println(ASN1Dump.dumpAsString(token2));
if (ASN1Dump.dumpAsString(token1).equals(
ASN1Dump.dumpAsString(token2))) {
System.out
.println("OK - Token is equal before and after encryption/decryption !");
} else {
System.err
.println("KO - Token isn't equal before and after encryption/decryption !");
}
System.out.println("\n--");
System.out.println("------");
System.out.println("--\n");
/* $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ */
/* Base64 Sample */
System.out.println("[Base64 Sample]");
tempBytes = token2.getEncoded();
System.out.println("Original bytes : ");
System.out.print("[");
for (i = 0; i < tempBytes.length; i++) {
System.out.print(tempBytes[i]);
System.out.print(";");
}
System.out.println("]");
tempEncodedBase64 = Base64.encode(tempBytes);
System.out.println("Base 64 encoded bytes : ");
System.out.print("[");
for (i = 0; i < tempEncodedBase64.length; i++) {
System.out.print(tempEncodedBase64[i]);
System.out.print(";");
}
System.out.println("]");
tempDecodedBase64 = Base64.decode(tempEncodedBase64);
System.out.println("Base 64 decoded bytes : ");
System.out.print("[");
for (i = 0; i < tempDecodedBase64.length; i++) {
System.out.print(tempDecodedBase64[i]);
System.out.print(";");
}
System.out.println("]");
System.out.println("Token As String after decoding : ");
sequenceASN1 = ASN1Sequence.getInstance(ASN1Object
.fromByteArray(tempDecodedBase64));
token2 = new Token(sequenceASN1);
System.out.println(ASN1Dump.dumpAsString(token2));
System.out.println("\n--");
System.out.println("------");
System.out.println("--\n");
/* $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ */
/* DER Objects Access */
System.out.printf("USER ID : {%s}\n", new String(token2
.getUserId().getOctets()));
System.out.printf("DER APP SPEC[%s] : {", token2.getDerAppSpec()
.getContents().length);
for (byte b : token2.getDerAppSpec().getContents()) {
System.out.printf(" %s ", b);
}
System.out.println("}");
System.out.printf("DER INTEGER : {%s}\n", token2
.getDerInteger().getValue());
System.out.printf("CREATION DATE : {%s}\n", token2
.getCreationDate().getDate());
System.out.println("\n\n");
System.out.println(".:ALL IS OK:.");
} catch (Exception exp) {
exp.printStackTrace();
} finally {
System.out.println("----------------------------");
}
}
}