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Bill Cox
2014-10-27 22:27:32 -04:00
parent 085d050ce6
commit 303b3d21d3
2 changed files with 61 additions and 55 deletions
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17
software/infnoise.c
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@@ -112,20 +112,9 @@ static void processBytes(uint8_t *keccakState, uint8_t *bytes, uint32_t entropy,
return;
}
Absorb(keccakState, bytes, BUFLEN/64);
// Output data at 1/2 the rate of entropy added to the sponge to insure that any
// over-estimation of entropy does not compromise the system.
if(writeDevRandom) {
//Linux does not mix entropy in a cryptographically secure way, so we have to
//force-feed /dev/random 4096 bits to insure it is in a secure state in case it
//hase been compromised.
uint8_t dataOut[LINUX_POOL_SIZE];
Squeeze(keccakState, dataOut, LINUX_POOL_SIZE);
outputBytes(dataOut, LINUX_POOL_SIZE, entropy/2, writeDevRandom);
} else {
uint8_t dataOut[BUFLEN/8];
Squeeze(keccakState, dataOut, BUFLEN/8);
outputBytes(dataOut, BUFLEN/8, entropy/2, writeDevRandom);
}
uint8_t dataOut[BUFLEN/8];
Squeeze(keccakState, dataOut, BUFLEN/8);
outputBytes(dataOut, BUFLEN/8, entropy, writeDevRandom);
}
// Initialize the Infinite Noise Multiplier USB ineterface.