int Keccak_SpongeInitialize(Keccak_SpongeInstance *instance, unsigned int rate, unsigned int capacity)
{
if (rate+capacity != 1600)
return 1;
if ((rate <= 0) || (rate > 1600) || ((rate % 8) != 0))
return 1;
KeccakF1600_Initialize();
KeccakF1600_StateInitialize(instance->state);
instance->rate = rate;
instance->byteIOIndex = 0;
instance->squeezing = 0;
return 0;
}
void displayPermutationIntermediateValues()
{
unsigned char state[KeccakF_width/8];
#ifdef KeccakReference32BI
const char *fileName = "KeccakF-1600-IntermediateValues32BI.txt";
#else
const char *fileName = "KeccakF-1600-IntermediateValues.txt";
#endif
FILE *f;
f = fopen(fileName, "w");
if (f == NULL)
printf("Could not open %s\n", fileName);
else {
KeccakF1600_Initialize();
fprintf(f, "+++ The round constants +++\n");
fprintf(f, "\n");
displayRoundConstants(f);
fprintf(f, "+++ The rho offsets +++\n");
fprintf(f, "\n");
displayRhoOffsets(f);
displaySetIntermediateValueFile(f);
displaySetLevel(3);
fprintf(f, "+++ Example with the all-zero input +++\n");
fprintf(f, "\n");
memset(state, 0, KeccakF_width/8);
KeccakF1600_StatePermute(state);
fprintf(f, "+++ Example taking the previous output as input +++\n");
fprintf(f, "\n");
KeccakF1600_StatePermute(state);
fclose(f);
displaySetIntermediateValueFile(0);
}
}
