Re: ArrayIndexOutOfBoundsException

Hey guys ,
Can anybody help me on this?

On Fri, Nov 16, 2018 at 10:41 AM lokesh kalal <[email protected]> wrote:

> Hi
> I am using folllwing class to decrypt the various data packet in a loop.
>
> public class Decryptor {
>
> private Cipher aesDecryptCipher = null;
>
> public byte[] Decrypt(byte[] data) {
> byte[] decryptedData = null;
> try {
> if (aesKeySpec == null)
> aesKeySpec = new SecretKeySpec(sessionKey, "AES");
> if (aesDecryptCipher == null) {
> aesDecryptCipher = Cipher.getInstance("AES", "BC");
> aesDecryptCipher.init(Cipher.DECRYPT_MODE, aesKeySpec);
> }
> decryptedData = aesDecryptCipher.doFinal(data);
> } catch (NoSuchAlgorithmException e) {
> Logger.d(tag, "NoSuchAlgorithmException: " + e.toString());
> } catch (NoSuchPaddingException e) {
> Logger.d(tag, "NoSuchPaddingException: " + e.toString());
> } catch (InvalidKeyException e) {
> Logger.d(tag, "InvalidKeyException: " + e.toString());
> } catch (IllegalBlockSizeException e) {
> Logger.d(tag, "IllegalBlockSizeException: " + e.toString());
> } catch (BadPaddingException e) {
> Logger.d(tag, "BadPaddingException: " + e.toString());
> } catch (NoSuchProviderException e) {
> Logger.d(tag, "aesDecrypt NoSuchProviderException: " + e.toString());
> } catch (IllegalStateException e) {
> Logger.e(tag, "aesDecrypt IllegalStateException: " + e.toString());
> }
> return decryptedData;
> }
>
> }
>
> On Thu, Nov 15, 2018 at 3:21 PM Eckenfels. Bernd <[email protected]>
> wrote:
>
>> You need to provide us with a minimal code example on how you use the
>> Cipher so we can help you. What methods do you call with which buffer
>> length, what version is it, which cipher do you use, what do you want to
>> achieve. It looks like you use doFinal(byte[], int) with a too short output
>> buffer. Did you account for IV block, padding and AE Tag?
>>
>> Gruss
>> Bernd
>> --
>> http://www.seeburger.com
>> ________________________________________
>> From: lokesh kalal [[email protected]]
>> Sent: Thursday, November 15, 2018 09:24
>> To: [email protected]
>> Subject: [dev-crypto] ArrayIndexOutOfBoundsException
>>
>> Hi Guys ,
>> Facing multiple crashes in my application.
>> Is there somthing we can do to fix this?
>>
>> Fatal Exception: java.lang.
>> : src.length=208 srcPos=192 dst.length=16 dstPos=16 length=16
>>        at java.lang.System.arraycopy(System.java:252)
>>        at
>> com.android.org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher.processBytes(PaddedBufferedBlockCipher.java:221)
>>        at
>> com.android.org.bouncycastle.jcajce.provider.symmetric.util.BaseBlockCipher$BufferedGenericBlockCipher.processBytes(BaseBlockCipher.java:1004)
>>        at
>> com.android.org.bouncycastle.jcajce.provider.symmetric.util.BaseBlockCipher.engineDoFinal(BaseBlockCipher.java:841)
>>        at javax.crypto.Cipher.doFinal(Cipher.java:1340)
>>
>> --
>> Thanks & Regards,
>> Lokesh Kalal
>>
>>
>>
>>
>>
>>
>>
>>
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>
> --
> Thanks & Regards,
> Lokesh Kalal
>
>

-- 
Thanks & Regards,
Lokesh Kalal