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SHA3 in asm

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This commit is contained in:
wborgeaud 2022-07-18 16:36:37 +02:00
parent 14a58439e5
commit 15ee891778
1 changed files with 21 additions and 1 deletions
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22
evm/src/cpu/kernel/asm/ecrecover.asm
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@ -133,7 +133,27 @@ ecrecover_with_first_point:
// TODO
final_hashing:
JUMPDEST
PUSH 0xdeadbeef
// stack: PKx, PKy, retdest
PUSH 0
// stack: 0, PKx, PKy, retdest
MSTORE
// stack: PKy, retdest
PUSH 0x20
// stack: 0x20, PKy, retdest
MSTORE
// stack: retdest
PUSH 0x40
// stack: 0x40, retdest
PUSH 0
// stack: 0, 0x40, retdest
SHA3
// stack: hash, retdest
PUSH 0xffffffffffffffffffffffffffffffffffffffff
// stack: 2^160-1, hash, retdest
AND
// stack: address, retdest
SWAP1
// stack: retdest, address
JUMP
// Check if v, r, and s are in correct form.