evm-gost
GOST 34.11 and GOST 34.10 algorithms for cryptography with Solidity.
GOST 34.11-2012 hashing algorithm
GOST 34.11-2012(aka Streebog) hashing algorithm implementation in Solidity.
Credits
The library is based on Alexey Degtyarev streebog implementation.
Testing
Install Foundry toolkit for Ethereum application development.
Run tests
$ forge testGas usage analysis
The algorithm uses approximately 1 300 000 gas to calculate hash on hello world message.
Message hello world ~ 1_300_000 gas.
Message 012345678901234567890123456789012345678901234567890123456789012 ~ 1_300_000 gas.
Message Се ветри, Стрибожи внуци, веютъ с моря стрелами на храбрыя плъкы Игоревы ~ 1_700_000 gas.
Empty message ~ 1_300_000 gas.
Message with 63 bytes of 0x00 ~ 1_300_000 gas.
Message with 127 bytes of 0x00 ~ 1_700_000 gas.
Message with 128 bytes of 0x00 ~ 2_100_000 gas.
What means, gas consumption is the following: 63 bytes(or less) message - 1_300_000 gas. Each additional 64 bytes of the message adds 400_000 gas usage on top.
GOST 34.10 verification of digital signature
Gas usage analysis
Crucial part of digital signature verification is elliptic curve point multiplication.
It requires calculation of a modular multiplicative inverse.
One modular modular multiplicative inverse operation consumes ~ 150_000 gas.
In order to verify digital signature, we need to go through approximately
What results in 75M gas consumption. This has no practical sense.