On Jan 19, 12:17 pm, ZBrown <[email protected]> wrote:
> I am having an issue in which I encrypt my data, and it seems to be
> working; however, when I attempt to decrypt the data it returns
> gibberish after a 0x00 value. For instance I *send in a byte[256]
> that contains all 0x61, with several 0x00* interjected. I am doing
> this as a proof of concept, being that I would like to use the GCM
> model to encrypt data that will contain 0x00 within.
>
> My Encryption:
>
> int encrypt(byte iv[12], const byte *in, int *size, byte *out)
> {
> string messageData = (char *)in;
> string tempOut;
> try
> {
> GCM<AES>::Encryption e;
> e.SetKeyWithIv(key, 32, iv, 12);
>
> AuthenticatedEncryptionFilter ef(e, new StringSink(tempOut),
> false, 4);
> ef.ChannelPut("", (const byte*)messageData.data(), *size);
> ef.ChannelMessageEnd("");
> memcpy(out, tempOut.data(), *size - 4);
> *size -= 4;
> }
> catch
> {
> ...
> }
>
> return (1);
You've probably seen it, but just in case:
http://www.cryptopp.com/wiki/Gcm_Mode.
The string constructor stops at the first embedded NULL, so try the
following:
string messageData((char *)in, *size);
Jeff
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