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Je reçois question sur le certificat d'Internet Explorer de Microsoft tout en Crypter avec clé privée et décrypte une clé publique ayant d'émissionEncrypting certificat
1) Crypter fichier de travail
public String encryption(String inputData, String key, String certificate) // Certificate is nothing but aliase name
{
String encriptData = null;
String verify = checkForCertificateConfig();
if (!verify.equals("OK")) {
return verify;
}
System.out.println("ENCRYPTION INPUTDATA : " + inputData);
System.out.println("ENCRYPTION KEY : " + key);
System.out.println("ENCRYPTION CERTIFICATE : " + certificate);
try {
if (key.equalsIgnoreCase("Private")) {
// System.out.println("ENCRYPTION WITH PRIVATE KEY");
PrivateKey privateKey = (PrivateKey) keyStore.getKey(
certificate, null);
encriptData = encryptString(inputData, privateKey);
} else {
// System.out.println("ENCRYPTION WITH PUBLIC KEY");
encriptData = encryptString(inputData,
keyStore.getCertificate(certificate).getPublicKey());
}
} catch (NoSuchPaddingException ex) {
encriptData = ex.getMessage();
ex.printStackTrace();
} catch (IllegalBlockSizeException ex) {
encriptData = ex.getMessage();
ex.printStackTrace();
} catch (NoSuchAlgorithmException ex) {
encriptData = ex.getMessage();
ex.printStackTrace();
} catch (UnrecoverableKeyException ex) {
encriptData = ex.getMessage();
ex.printStackTrace();
} catch (InvalidKeyException ex) {
encriptData = ex.getMessage();
ex.printStackTrace();
} catch (KeyStoreException ex) {
encriptData = ex.getMessage();
ex.printStackTrace();
} catch (BadPaddingException ex) {
encriptData = ex.getMessage();
ex.printStackTrace();
} catch (Exception ex) {
encriptData = ex.getMessage();
ex.printStackTrace();
}
return encriptData;
}
private String encryptString(String encStr, PrivateKey key)
throws NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
String encoutStr = null;
/**
* first check key generation algorithm and initialize Cipher object
* according algorithm
*/
if (key.getAlgorithm().equalsIgnoreCase("RSA")) {
edCipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
} else if (key.getAlgorithm().equalsIgnoreCase("DSA")) {
edCipher = Cipher.getInstance("DSA/ECB/PKCS1Padding");
}
/**
* Initialize Cipher Object with Private key and mode of Encryption
*/
edCipher.init(Cipher.ENCRYPT_MODE, key);
byte[] buff = encStr.getBytes();
/**
* Encrypt the String and get binary data
*/
byte[] encryptedDataStringBytes = edCipher.doFinal(buff);
/**
* Encode the binary data into String formate
*/
encoutStr = this.bASE64Encoder.encode(encryptedDataStringBytes);
return encoutStr;
}
2) Décrypter erreur Obtenir comme
public String decryption(String inputData, String key, String certificate) {
String decriptData = null;
String verify = checkForCertificateConfig();
if (!verify.equals("OK")) {
return verify;
}
System.out.println("DECRYPTION INPUTDATA : " + inputData);
System.out.println("DECRYPTION KEY : " + key);
System.out.println("DECRYPTION CERTIFICATE : " + certificate);
try {
if (key.equalsIgnoreCase("Private")) {
// System.out.println("DECRYPTION WITH PRIVATE KEY");
PrivateKey privateKey = (PrivateKey) keyStore.getKey(
certificate, null);
decriptData = decryptString(inputData, privateKey);
} else {
// System.out.println("DECRYPTION WITH PUBLIC KEY");
decriptData = decryptString(inputData,
keyStore.getCertificate(certificate).getPublicKey());
}
} catch (NoSuchPaddingException ex) {
decriptData = ex.getMessage();
ex.printStackTrace();
} catch (IllegalBlockSizeException ex) {
decriptData = ex.getMessage();
ex.printStackTrace();
} catch (NoSuchAlgorithmException ex) {
decriptData = ex.getMessage();
ex.printStackTrace();
} catch (UnrecoverableKeyException ex) {
decriptData = ex.getMessage();
ex.printStackTrace();
} catch (InvalidKeyException ex) {
decriptData = ex.getMessage();
ex.printStackTrace();
} catch (KeyStoreException ex) {
decriptData = ex.getMessage();
ex.printStackTrace();
} catch (BadPaddingException ex) {
decriptData = ex.getMessage();
ex.printStackTrace();
} catch (IOException ex) {
decriptData = ex.getMessage();
ex.printStackTrace();
} catch (Exception ex) {
decriptData = ex.getMessage();
ex.printStackTrace();
}
return decriptData;
}
private String decryptString(String dncStr, PrivateKey key)
throws NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, IOException, IllegalBlockSizeException,
BadPaddingException {
String decStr = null;
/**
* first check key generation algorithm and initialize Cipher object
* according algorithm
*/
if (key.getAlgorithm().equalsIgnoreCase("RSA")) {
edCipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
} else if (key.getAlgorithm().equalsIgnoreCase("DSA")) {
edCipher = Cipher.getInstance("DSA/ECB/PKCS1Padding");
}
/**
* Initialize Cipher Object with Private key and mode of Decryption
*/
edCipher.init(Cipher.DECRYPT_MODE, key);
/**
* Decode the encrypted String convert into binary formate
*/
byte[] encryptedDataStringBytes = this.bASE64Decoder
.decodeBuffer(dncStr);
/**
* Decrypt the binary data and get Original encrypted String.
*/
decStr = new String(edCipher.doFinal(encryptedDataStringBytes));
return decStr;
}
erreur comme ...
javax.crypto.BadPaddingException: Blocktype mismatch: 0
at sun.security.rsa.RSAPadding.unpadV15(Unknown Source)
at sun.security.rsa.RSAPadding.unpad(Unknown Source)
at com.sun.crypto.provider.RSACipher.a(DashoA13*..)
at com.sun.crypto.provider.RSACipher.engineDoFinal(DashoA13*..)
at javax.crypto.Cipher.doFinal(DashoA13*..)
at eTokenApplet.decryptString(eTokenApplet.java:1255)
at eTokenApplet.decryption(eTokenApplet.java:1099)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.plugin.javascript.JSInvoke.invoke(Unknown Source)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
at sun.plugin2.liveconnect.JavaClass$MethodInfo.invoke(Unknown Source)
at sun.plugin2.liveconnect.JavaClass$MemberBundle.invoke(Unknown Source)
at sun.plugin2.liveconnect.JavaClass.invoke0(Unknown Source)
at sun.plugin2.liveconnect.JavaClass.invoke(Unknown Source)
at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$DefaultInvocationDelegate.invoke(Unknown Source)
at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo.doObjectOp(Unknown Source)
at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$LiveConnectWorker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Départ à 'eTokenApplet.decryptString (eTokenApplet.java:1255)' –