55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/*
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This is a simple example to use libinfnoise with whitened and multiplied output.
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*/
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#include <stdio.h>
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#include <ftdi.h>
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#include <libinfnoise.h>
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int main()
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{
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// parameters
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char *serial=NULL; // can be set to a specific serial, NULL uses the first found device
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bool initKeccak = true; // initialize Keccak sponge (used for whitening)
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uint32_t multiplier = 1u; // multiplier for whitening
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bool debug = false; // debug mode (health monitor writes to stderr)
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// initialize hardware and health monitor
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struct infnoise_context context;
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if (!initInfnoise(&context, serial, initKeccak, debug)) {
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fprintf(stderr, "Error: %s\n", context.message);
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return 1; // ERROR
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}
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// fixed result size of 512 bit (64byte)
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uint8_t resultSize = 64u;
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// read and print in a loop (until 1MB is read)
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uint64_t totalBytesWritten = 0u;
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while (totalBytesWritten < 1000000) {
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uint8_t result[resultSize];
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context.errorFlag = false;
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// readRawData returns the number of bytes written to result array
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uint64_t bytesWritten = readData(&context, result, !initKeccak, multiplier);
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// check for errors
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// note: bytesWritten is also 0 in this case, but an errorFlag is needed as
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// bytesWritten can also be 0 when data hasn't passed the health monitor.
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// (which happens sometimes in normal operation - and is expected behaviour)
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if (context.errorFlag) {
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fprintf(stderr, "Error: %s\n", context.message);
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return -1;
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}
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// print as many bytes as readData told us
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fwrite(result, 1, bytesWritten, stdout);
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// sum up
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totalBytesWritten += bytesWritten;
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fprintf(stderr, "bytes read: %lu\n", (unsigned long) totalBytesWritten);
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}
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return 0;
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}
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