Re: Adding & checking MDC using high-level org.bouncycastle.openpgp

That's what I needed! Thanks!

On Sat, Aug 25, 2018 at 06:23:47PM +0200, VanitasVitae wrote:
>    Hi!
> 
>    I use BcPGPDataEncryptorBuilder.setWithIntegrityPacket(true);
>    for that purpose :)
> 
>    Am 25. August 2018 18:15:49 MESZ schrieb Mike Burke
>    <[email protected]>:
> 
>  I'm doing symmetric AES256 PGP encryption using org.bouncycastle.openpgp.PGPEncryptedDataGenerator and friends.  I am using Bouncy Castle 1.60 for JDK 1.5-1.8.
> 
>  I want to include the modification detection code so that GPG accepts the encrypted file without warning, and so that I can also detect modifications when I later handle decryption via BouncyCastle.
> 
>  It looks like org.bouncycastle.bcpg.ModDetectionCodePacket will let me handle the packet, but my understanding is that I could only use it with the lower-level bcpg interface.  org.bouncycastle.openpgp classes don't expose the BCPGOutputStream, and anyway, they manage it directly for me so I probably shouldn't stick my hands in there.
> 
>  Searching for ModDetectionCodePacket didn't produce any obviously useful results or usage examples.
> 
>  Is it currently possible to use a MDC with the high-level org.bouncycastle.openpgp package?
> 
>  Thanks!
>  Mike
> 
> 
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