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| ///formulaire de paiement
f2 = new Form("Formulaire de paiement");
f2.setTicker(ticker);
montant = new TextField("Montant à payer(TND):", "", 16,
TextField.ANY);
num_Carte = new TextField("Numéro de carte bancaire:", "", 16,
TextField.PHONENUMBER);
sti = new StringItem(null, "Date d'expiration");
date_expjour = new TextField("Jour: ", "", 2,
TextField.PHONENUMBER);
date_expmois = new TextField("Mois: ", "", 2,
TextField.PHONENUMBER);
date_expannee = new TextField("Année: ", "", 4,
TextField.PHONENUMBER);
code_Secret = new TextField("Code secret:", "", 4,
TextField.PHONENUMBER);
trois_chiff = new TextField("Trois derniers chiffres:", "", 3,
TextField.PHONENUMBER);
f2.append(montant);
f2.append(num_Carte);
f2.append(sti);
f2.append(date_expjour);
f2.append(date_expmois);
f2.append(date_expannee);
f2.append(code_Secret);
f2.append(trois_chiff);
display.setCurrent(f2);
f2.addCommand(backCommand);
f2.addCommand(send);
f2.setCommandListener(this);
//construction de la clé et cryptage
String modulus="AM8sVwRf8AnUjVpImOQuB5lKYDtzlHJMcQ0aRi2zFh2Jd+V0J8UhpIU1OnIBCj5SW1+L34hWqLmibFwv34XNxC0=";
String publicExp="AQAB"
String s1 = montant.getString();
String s2 = num_Carte.getString();
String s3 = date_expjour.getString();
String s4 = date_expmois.getString();
String s5 = date_expannee.getString();
String s6 = code_Secret.getString();
String s7 = trois_chiff.getString();
String date_exp = s3 + s4 + s5;
String messageClair = s1 + ":" + s2 + ":" + date_exp + ":"+s6+ ":" + s7;
System.out.println("message à chiffrer " + messageClair);
BigInteger modulus1 = new BigInteger(1,Base64.decode(modulus));
BigInteger pubExp1 = new BigInteger(1,Base64.decode(publicExp));
RSAPublicKey= new RSAKeyParameters(false,modulus1,pubExp1)
byte[] messEnvoyeByte = null;
try {
messEnvoyeByte = theEncryption.RSAEncrypt(messageClair.getBytes(), RSAPublicKey);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String messageFinal= new String(Base64.encode(messEnvoyeByte));
sendSms = new SendSMS();
sendSms.setMessageEnv(messageFinal);
puis lorsque l'sms ARRIVE AU SERVEUR je construi le clé privé et je prend le contenu du sms ,je le decode puis je le decrypte :
//code coté serveur
String modulus = "AM8sVwRf8AnUjVpImOQuB5lKYDtzlHJMcQ0aRi2zFh2Jd+V0J8UhpIU1OnIBCj5SW1+L34hWqLmibFwv34XNxC0=";
String publicExp="AQAB";
String privateExp = "W8C2dTCMHb5uL/sRA5XDNcez4QCqUQi71OK7DAhRlhh8mn6eBuNKFRwrGBsoiX+jX2xWN45qsaRAokxsq/zqoQ==";
String p = "APOXRvd/v4SRQlR+pJxF3b5xbb7EQMjlrNNqAzLdnFJp";
String q = "ANm6IZOtNZfN3KcGxYgZLRWGdYB9fBY/Kq63uVX2NaMl";
String dp = "ANK/tmGZwBw1BPtPmqGt/NyxDG85Ioft1moPVXcjrwTJ";
String dq = "AItBtooaxeVzQQb/mMXkvGZBGtR07jHYcvdPAVaO5F2V";
String qInv = "G/c6jrV1a7m5f+I/qb1eZYVqvxloT6WSDz4QEYduAFQ=";
//construction de la clé privée
BigInteger modulus1 = new BigInteger(1,Base64.decode(modulus));
BigInteger pubExp1 = new BigInteger(1,Base64.decode(publicExp));
BigInteger privExp1 = new BigInteger(1,Base64.decode(privateExp));
BigInteger p1 = new BigInteger(1,Base64.decode(p));
BigInteger q1 = new BigInteger(1,Base64.decode(q));
BigInteger dp1 = new BigInteger(1,Base64.decode(dp));
BigInteger dq1 = new BigInteger(1,Base64.decode(dq));
BigInteger qInv1 = new BigInteger(1,Base64.decode(qInv));
RSAPrivateKey=new RSAPrivateCrtKeyParameters(modulus1,pubExp1,privExp1,p1,q1,dp1,dq1,qInv1);
//recuperation du contenu du sms puis decryptage
//messageChiffCode64: contenu du sms codé64
theEncryption= new Encryption();
byte[] messageChiffDecode64 = Base64.decode(messageChiffCode64);
String s= new String(messageChiffDecode64);
System.out.println("message decodé : " + s);
byte[] messageDecrypByte = theEncryption.RSADecrypt(messageChiffDecode64, RSAPrivateKey);
String messageDecrypFinal = new String(messageDecrypByte);
System.out
.println("Message Decrypté final : " + messageDecrypFinal);
le cryptage coté mobile marche trés bien mais quand je decrypte coté serveur lerreur suivante saffiche :
javax.servlet.ServletException: unknown block type
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
le code de la classe Encryption est le suivant:
public byte[] RSAEncrypt(byte[] toEncrypt,RSAKeyParameters RSAPublicKey) throws Exception {
if (RSAPublicKey == null) {
throw new Exception(
"Please generate RSA keys first in order to work");
}
AsymmetricBlockCipher theEngine = new RSAEngine();
theEngine = new PKCS1Encoding(theEngine);
theEngine.init(true, RSAPublicKey);
return theEngine.processBlock(toEncrypt, 0, toEncrypt.length);
}
public byte[] RSADecrypt(byte[] toDecrypt,RSAPrivateCrtKeyParameters RSAPrivateKey) throws Exception {
if (RSAPrivateKey == null) {
throw new Exception(
"Please generate RSA keys first in order to work");
}
AsymmetricBlockCipher theEngine = new RSAEngine();
theEngine = new PKCS1Encoding(theEngine);
theEngine.init(false, RSAPrivateKey);
return theEngine.processBlock(toDecrypt, 0, toDecrypt.length);
} |
