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Cryptonight variant 2

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Contains two modifications to improve ASIC resistance: shuffle and integer math.

Shuffle makes use of the whole 64-byte cache line instead of 16 bytes only, making Cryptonight 4 times more demanding for memory bandwidth.

Integer math adds 64:32 bit integer division followed by 64 bit integer square root, adding large and unavoidable computational latency to the main loop.

More details and performance numbers: https://github.com/SChernykh/xmr-stak-cpu/blob/master/README.md
This commit is contained in:
SChernykh 2018-08-03 11:41:41 +02:00
parent 0dddfeacc9
commit 5fd83c13fb
5 changed files with 576 additions and 55 deletions
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6
tests/hash/CMakeLists.txt
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@ -43,8 +43,12 @@ set_property(TARGET hash-tests
PROPERTY
FOLDER "tests")
foreach (hash IN ITEMS fast slow slow-1 tree extra-blake extra-groestl extra-jh extra-skein)
foreach (hash IN ITEMS fast slow slow-1 slow-2 tree extra-blake extra-groestl extra-jh extra-skein)
add_test(
NAME "hash-${hash}"
COMMAND hash-tests "${hash}" "${CMAKE_CURRENT_SOURCE_DIR}/tests-${hash}.txt")
endforeach ()
add_test(
NAME "hash-variant2-int-sqrt"
COMMAND hash-tests "variant2_int_sqrt")