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Verify signatures

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This commit is contained in:
Mark Spanbroek 2021-03-16 10:19:13 +01:00
parent d8bb98768a
commit 48e27a9bd1
2 changed files with 16 additions and 4 deletions
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3
nitro/protocol/signature.nim
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@ -34,6 +34,9 @@ proc recover*(signature: Signature, state: State): ?EthAddress =
let hash = hashMessage(hashState(state))
recover(signature, hash)?.toAddress
proc verify*(signature: Signature, state: State, signer: EthAddress): bool =
recover(signature, state) == signer.some
proc `$`*(signature: Signature): string =
var bytes = signature.toRaw()
bytes[64] += 27

17
tests/nitro/protocol/testSignature.nim
View File

@ -18,12 +18,21 @@ suite "signature":
check recover(signature, SkMessage(hash)).tryGet() == publicKey
test "recovers ethereum address from signature":
let state1, state2 = State.example
let state = State.example
let key = PrivateKey.random()
let address = key.toPublicKey.toAddress
let signature = key.sign(state1)
check recover(signature, state1) == address.some
check recover(signature, state2) != address.some
let signature = key.sign(state)
check recover(signature, state) == address.some
check recover(signature, State.example) != address.some
test "verifies signatures":
let state = State.example
let key = PrivateKey.random()
let address = key.toPublicKey.toAddress
let signature = key.sign(state)
check verify(signature, state, address)
check not verify(signature, state, EthAddress.example)
check not verify(signature, State.example, address)
test "produces the same signatures as the javascript implementation":
let state =State(