Beam Equihash specification

Anatol Sevostyan edited this page Dec 16, 2018 · 1 revision

Beam Equihash specification

Chosen parameters

N = 150 K = 5

Hash generation convention

Since 150 in not a multiple of 8 we pick 19 full bytes and clear lower 2 bits of 18th byte. We can get only 3 hashes from 512-bit blake2 output. Expected blake2 hash output size is 3 * 19 = 57 bytes

Implementation for CPU

Beam’s Equihash implementation for CPU is based on zcash’s version. https://github.com/BeamMW/beam/blob/master/3rdparty/crypto/equihash_impl.cpp

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