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/*
This is a more advanced example to use libinfnoise with raw, whitened and/or multiplied output.
*/
#include <stdio.h>
#include <ftdi.h>
#include <libinfnoise.h>
int main()
{
// parameters
char *serial=NULL; // can be set to a specific serial, NULL uses the first found device
bool initKeccak = true; // initialize Keccak sponge (used for whitening)
uint32_t multiplier = 2u; // multiplier for whitening
bool debug = true; // debug mode (health monitor writes to stderr)
// initialize hardware and health monitor
struct infnoise_context context;
if (!initInfnoise(&context, serial, initKeccak, debug)) {
fprintf(stdout, "Error: %s\n", context.message);
return 1; // ERROR
}
uint32_t resultSize;
if (multiplier <= 2 || initKeccak == false) {
resultSize = 64u;
} else {
resultSize = 128u;
}
// read and print in a loop (until 1M is read)
uint64_t totalBytesWritten = 0u;
while (totalBytesWritten < 1000000) {
uint8_t result[resultSize];
// readRawData returns the number of bytes written to result array
uint64_t bytesWritten = readData(&context, result, !initKeccak, multiplier);
// check for errors
// note: bytesWritten is also 0 in this case, but an errorFlag is needed as
// bytesWritten can also be 0 when data hasn't passed the health monitor.
if (context.errorFlag) {
fprintf(stderr, "Error: %s\n", context.message);
return -1;
}
totalBytesWritten += bytesWritten;
fprintf(stderr, "infnoise bytes read: %lu\n", (unsigned long) totalBytesWritten);
// print as many bytes as readData told us
fwrite(result, 1, bytesWritten, stdout);
}
return 0;
}
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