How to avoid IllegalBlockSizeException? #20
Description
Hello,
I still obtaining following Exception randomly during the sync (encrypt/decrypt) of the values.
I have no idea how to avoid the following Exception, what I'm doing wrong? Encryption/Decryption is processed in async services. Many thanks for any hint.
03-05 10:29:28.624 2633-2835/? W/System.err: javax.crypto.IllegalBlockSizeException: error:1e00007b:Cipher functions:OPENSSL_internal:WRONG_FINAL_BLOCK_LENGTH
03-05 10:29:28.624 2633-2835/? W/System.err: at com.android.org.conscrypt.NativeCrypto.EVP_CipherFinal_ex(Native Method)
03-05 10:29:28.624 2633-2835/? W/System.err: at com.android.org.conscrypt.OpenSSLCipher$EVP_CIPHER.doFinalInternal(OpenSSLCipher.java:570)
03-05 10:29:28.624 2633-2835/? W/System.err: at com.android.org.conscrypt.OpenSSLCipher.engineDoFinal(OpenSSLCipher.java:351)
03-05 10:29:28.624 2633-2835/? W/System.err: at javax.crypto.Cipher.doFinal(Cipher.java:1736)
03-05 10:29:28.624 2633-2835/? W/System.err: at se.simbio.encryption.Encryption.decrypt(Encryption.java:179)
03-05 10:29:28.624 2633-2835/? W/System.err: at com.mypackage.security.Security.decryptString(Security.java:127)
03-05 10:29:28.624 2633-2835/? W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:333)
03-05 10:29:28.624 2633-2835/? W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:266)
03-05 10:29:28.624 2633-2835/? W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
03-05 10:29:28.624 2633-2835/? W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
03-05 10:29:28.624 2633-2835/? W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
03-05 10:29:28.624 2633-2835/? W/System.err: at java.lang.Thread.run(Thread.java:764)
My Encrypt, Decrypt methods are following:
public String decryptString(final String string, Context context) {
String decryptedString;
if (Constants.Global.ENCRYPTION_ENABLED) {
//Logger.d("decrypting " + string);
if (string != null) {
try {
decryptedString = encryptionInstance.decrypt(string);
} catch (Exception e) {
decryptedString = "";
e.printStackTrace();
}
} else {
decryptedString = "";
}
} else {
decryptedString = string;
}
return decryptedString;
}
public String encryptString(final String string, Context context) {
String encryptedString;
if(Constants.Global.ENCRYPTION_ENABLED) {
//Logger.d("encrypting " + string);
if(string != null) {
try {
encryptedString = encryptionInstance.encrypt(string);
} catch (Exception e) {
encryptedString = "";
e.printStackTrace();
}
} else {
encryptedString = "";
}
} else {
encryptedString = string;
}
return encryptedString;
}