diff options
| author | lloyd <[email protected]> | 2009-01-31 12:12:59 +0000 |
|---|---|---|
| committer | lloyd <[email protected]> | 2009-01-31 12:12:59 +0000 |
| commit | 0f01c1e26394fabdb6eee7442bc657f159eccfef (patch) | |
| tree | 6833562780d3c43641c97dbc168609449889d310 /src/entropy | |
| parent | 0a9152898efe593bb96a619caf9d74f0bc7f75e4 (diff) | |
Track the collected entropy as a double instead of a unsigned int. Otherwise
inputs might end up not contributing anything to the count even when they should.
This was paricularly noticable with the proc walker - it uses an estimate of .01
bits / byte, so if the file was < 100 bytes it would not count for anything at all.
Diffstat (limited to 'src/entropy')
| -rw-r--r-- | src/entropy/entropy_src.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/entropy/entropy_src.h b/src/entropy/entropy_src.h index c294ca6ac..3fd5c443e 100644 --- a/src/entropy/entropy_src.h +++ b/src/entropy/entropy_src.h @@ -29,7 +29,8 @@ class Entropy_Accumulator MemoryRegion<byte>& get_io_buffer(u32bit size) { io_buffer.create(size); return io_buffer; } - u32bit bits_collected() const { return collected_bits; } + u32bit bits_collected() const + { return static_cast<u32bit>(collected_bits); } bool polling_goal_achieved() const { return (collected_bits >= entropy_goal); } @@ -44,7 +45,7 @@ class Entropy_Accumulator void add(const void* bytes, u32bit length, double entropy_bits_per_byte) { add_bytes(bytes, length); - collected_bits += std::min<u32bit>(8, entropy_bits_per_byte) * length; + collected_bits += entropy_bits_per_byte * length; } template<typename T> @@ -56,7 +57,8 @@ class Entropy_Accumulator virtual void add_bytes(const void* bytes, u32bit length) = 0; SecureVector<byte> io_buffer; - u32bit entropy_goal, collected_bits; + u32bit entropy_goal; + double collected_bits; }; class Entropy_Accumulator_BufferedComputation : public Entropy_Accumulator |