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@@ -4,7 +4,7 @@ |
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#include "onetimepad.hpp" |
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#include "timing.hpp" |
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namespace CodeDweller { |
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using namespace std; |
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/* |
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class OneTimePad { // One Time Pad generator. |
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@@ -31,6 +31,8 @@ class OneTimePad { |
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#include <windows.h> |
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#include <wincrypt.h> |
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namespace CodeDweller { |
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PadBuffer OneTimePad::Entropy(int Length) { // Get a PadBuffer full of randomness. |
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PadBuffer Buffer(Length, 0); // Start by initializing the buffer. |
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HCRYPTPROV provider = 0; // We will need a handle for the source. |
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@@ -65,6 +67,8 @@ PadBuffer OneTimePad::Entropy(int Length) { |
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#include <fstream> |
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namespace CodeDweller { |
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PadBuffer OneTimePad::Entropy(int Length) { // Get Length bytes of strong entropy. |
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PadBuffer Buffer(Length, 0); // Initialize a buffer to hold them. |
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try { // Handle this in a try block. |
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@@ -107,7 +111,7 @@ void OneTimePad::addLightweightEntropy() { |
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CombinedFill = CombinedFill ^ LightweightEntropyBuffer; // Pick up some previous state entropy. |
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unsigned char* PrimerBuffer = (unsigned char*) &CombinedFill; // Treat the value as a bunch of bytes. |
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unsigned char* EntropyBuffer = (unsigned char*) &LightweightEntropyBuffer; // Likewise with the entropy buffer. |
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for(int i = 0; i < sizeof(msclock); i++) { // Fold bytes into the mangler one |
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for(int unsigned i = 0; i < sizeof(msclock); i++) { // Fold bytes into the mangler one |
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EntropyBuffer[i] += // byte at a time, capturing the |
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PadGenerator.Encrypt( // the results and using one extra |
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PadGenerator.Encrypt(PrimerBuffer[i])); // round per byte to increase the |
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@@ -116,7 +120,7 @@ void OneTimePad::addLightweightEntropy() { |
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void OneTimePad::addEntropy() { // Add strong entropy if available. |
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PadBuffer Fill = Entropy(); // Grab the entropy bits to add. |
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for(int i = 0; i < Fill.size(); i++) { // Pump them in one byte at a |
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for(int unsigned i = 0; i < Fill.size(); i++) { // Pump them in one byte at a |
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PadGenerator.Encrypt( // time and then run an extra |
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PadGenerator.Encrypt(Fill.at(i))); // round per byte to increase the |
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} // amount of guessing an attacker |
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@@ -124,7 +128,7 @@ void OneTimePad::addEntropy() { |
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void OneTimePad::addEntropy(PadBuffer Entropy) { // Add entropy from a given source. |
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addLightweightEntropy(); // Start with some lightweight entropy. |
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for(int i = 0; i < Entropy.size(); i++) { // Then loop through the provided |
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for(int unsigned i = 0; i < Entropy.size(); i++) { // Then loop through the provided |
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PadGenerator.Encrypt( // entropy and mix it in with one |
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PadGenerator.Encrypt(Entropy.at(i))); // extra round per byte to increase |
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} // the amount of guessing an attacker |