93 lines
2.7 KiB
Nim
93 lines
2.7 KiB
Nim
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# Nimbus
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# Copyright (c) 2018-2019 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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import
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../../nimbus/constants,
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../../nimbus/utils/ec_recover,
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../../nimbus/utils/tx_pool/tx_item,
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eth/[common, common/transaction, keys],
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stew/results,
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stint
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const
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# example from clique, signer: 658bdf435d810c91414ec09147daa6db62406379
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prvKey = "9c647b8b7c4e7c3490668fb6c11473619db80c93704c70893d3813af4090c39c"
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proc signature(tx: Transaction; key: PrivateKey): (int64,UInt256,UInt256) =
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let
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hashData = tx.txHashNoSignature.data
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signature = key.sign(SkMessage(hashData)).toRaw
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v = signature[64].int64
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result[1] = UInt256.fromBytesBE(signature[0..31])
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result[2] = UInt256.fromBytesBE(signature[32..63])
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if tx.txType == TxLegacy:
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if tx.V >= EIP155_CHAIN_ID_OFFSET:
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# just a guess which does not always work .. see `txModPair()`
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# see https://eips.ethereum.org/EIPS/eip-155
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result[0] = (tx.V and not 1'i64) or (not v and 1)
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else:
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result[0] = 27 + v
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else:
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# currently unsupported, will skip this one .. see `txModPair()`
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result[0] = -1
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proc sign(tx: Transaction; key: PrivateKey): Transaction =
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let (V,R,S) = tx.signature(key)
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result = tx
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result.V = V
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result.R = R
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result.S = S
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proc sign(header: BlockHeader; key: PrivateKey): BlockHeader =
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let
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hashData = header.blockHash.data
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signature = key.sign(SkMessage(hashData)).toRaw
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result = header
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result.extraData.add signature
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# ------------
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let
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prvTestKey* = PrivateKey.fromHex(prvKey).value
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pubTestKey* = prvTestKey.toPublicKey
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testAddress* = pubTestKey.toCanonicalAddress
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proc txModPair*(item: TxItemRef; nonce: int; priceBump: int):
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(TxItemRef,Transaction,Transaction) =
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## Produce pair of modified txs, might fail => so try another one
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var tx0 = item.tx
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tx0.nonce = nonce.AccountNonce
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var tx1 = tx0
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tx1.gasPrice = (tx0.gasPrice * (100 + priceBump) + 99) div 100
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let
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tx0Signed = tx0.sign(prvTestKey)
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tx1Signed = tx1.sign(prvTestKey)
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block:
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let rc = tx0Signed.ecRecover
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if rc.isErr or rc.value != testAddress:
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return
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block:
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let rc = tx1Signed.ecRecover
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if rc.isErr or rc.value != testAddress:
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return
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(item,tx0Signed,tx1Signed)
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proc testKeySign*(header: BlockHeader): BlockHeader =
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## Sign the header and embed the signature in extra data
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header.sign(prvTestKey)
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# End
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