Hi Dushyant, A side note: I'm going to go assume that with "encoder" and "decoder" you mean Channel Coding. You *must* do channel coding after encryption, otherwise you won't get decryptable bits as soon as you don't have infinite SNR. This is not optional, because with proper encryption a single flipped bit will damage your signal in several places. This thread reminds me of http://lists.gnu.org/archive/html/discuss-gnuradio/2014-04/msg00277.html so there might a solution to your problem there; Ralph has posted some interesting insights back then.
Usually, you'll want to have something that applies something like a block cipher on packetized data. Although I'm not aware of any existing Modules that do this, using stream tagged blocks, and the gr-digital header demux infrastructure, you should be able to packetize your data and encrypt the payload en bloc, for example using AES. Greetings, Marcus On 28.05.2014 15:25, dushyant.marathe wrote: > I want to simulate a voice transmission system in GNURadio Companion (GRC). > > My system configuration is as follows: > > TRANSMITTER : Wav file source --> encoder --> encryption --> modulator --> > RF > > RECEIVER : speaker/Wav file sink <-- decoder <-- decryption <-- demodulator > <-- RF > > I have simulated the above configuration in Ubuntu 12.04 machine but > without > encryption/decryption blocks. > > If you can point me to an existing OoTM of digital encryption, it would be > nice. > > Thanks and Regards, > Dushyant > > > > -- > View this message in context: > http://gnuradio.4.n7.nabble.com/Out-of-Tree-Encryption-block-tp48595.html > Sent from the GnuRadio mailing list archive at Nabble.com. > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
