On Tuesday, December 22, 2015 at 2:32:32 AM UTC-5, Jeffrey Walton wrote:
>
>
> int main(int argc, char* argv[])
> {
> static const unsigned int BIG_SIZE = 2U * 1024U * 1024U * 1024U;
> static const unsigned int BLOCK_SIZE = 4096U;
>
> try
> {
> SecByteBlock key(32);
> OS_GenerateRandomBlock(false, key.data(), key.size());
>
> cout << "Key: ";
> ArraySource as(key.data(), key.size(), true, new HexEncoder(new
> FileSink(cout)));
> cout << endl;
>
> CFB_Mode<AES>::Encryption enc;
> enc.SetKeyWithIV(key.data(), key.size(), key.data());
>
> MeterFilter* meter;
> StreamTransformationFilter stf(enc, meter = new MeterFilter(new
> FileSink("null.enc")));
>
> SecByteBlock data(BLOCK_SIZE);
> memset(data, 0x00, data.size());
>
> unsigned int remaining = BIG_SIZE;
> while(remaining)
> {
> if(remaining % (1024*1024) == 0)
> {
> cout << "Processed: " << meter->GetTotalBytes();
> cout << ", Available: " << stf.MaxRetrievable() << endl;
> }
>
> const unsigned int req = STDMIN(remaining, BLOCK_SIZE);
> stf.Put(data, req);
> stf.Flush(false);
>
> remaining -= req;
> }
> }
> catch(const Exception& ex)
> {
> cerr << ex.what() << endl;
> }
>
> return 0;
> }
>
This might be a little closer to what you are doing:
MeterFilter* meter;
StreamTransformationFilter* stf;
FileSource fs("/dev/zero", false, stf = new
StreamTransformationFilter(enc, meter = new MeterFilter(new
FileSink("/dev/null"))));
unsigned int remaining = BIG_SIZE;
while(remaining)
{
if(remaining % (1024*1024) == 0)
{
cout << "Processed: " << meter->GetTotalBytes();
cout << ", Available: " << stf->MaxRetrievable() << endl;
}
const unsigned int req = STDMIN(remaining, BLOCK_SIZE);
fs.Pump(req);
remaining -= req;
}
Jeff
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