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Fisrt completed USB key works

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This commit is contained in:
Bill Cox
2014-10-31 08:12:11 -04:00
parent 0ece873b9d
commit 24f5520035
6 changed files with 24 additions and 12 deletions
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15
software/infnoise.c
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@@ -21,7 +21,8 @@
#define SWEN1 4
#define SWEN2 1
#else
#define DESIGN_K 1.736
#define DESIGN_K 1.82
//#define DESIGN_K 1.736
#define COMP1 1
#define COMP2 4
#define SWEN1 2
@@ -62,9 +63,12 @@ static uint32_t extractBytes(uint8_t *bytes, uint8_t *inBuf, bool raw) {
return inmGetEntropyLevel();
}
// Write the bytes to either stdout, or /dev/random. Cut the entropy estimate in half to
// be conservative.
// Write the bytes to either stdout, or /dev/random. Use the lower of the measured
// entropy and the provable lower bound on average entropy.
static void outputBytes(uint8_t *bytes, uint32_t length, uint32_t entropy, bool writeDevRandom) {
if(entropy > inmExpectedEntropyPerBit/INM_ACCURACY) {
entropy = inmExpectedEntropyPerBit/INM_ACCURACY;
}
if(!writeDevRandom) {
if(fwrite(bytes, 1, length, stdout) != length) {
fputs("Unable to write output from Infinite Noise Multiplier\n", stderr);
@@ -103,8 +107,7 @@ static void Squeeze(uint8_t *keccakState, uint8_t *dataOut, uint32_t length) {
}
// Send the new bytes through the health checker and also into the Keccak sponge.
// Output bytes from the sponge only if the health checker says it's OK, and only
// output half the entropy we get from the INM, just to be paranoid.
// Output bytes from the sponge only if the health checker says it's OK
static void processBytes(uint8_t *keccakState, uint8_t *bytes, uint32_t entropy, bool raw, bool writeDevRandom) {
if(raw) {
// In raw mode, we just output raw data from the INM.
@@ -208,7 +211,7 @@ int main(int argc, char **argv)
char *message;
if(!initializeUSB(&ftdic, &message)) {
// Sometimes have to do it twice - not sure why
ftdi_usb_close(&ftdic);
//ftdi_usb_close(&ftdic);
if(!initializeUSB(&ftdic, &message)) {
fputs(message, stderr);
return 1;