mirror of
https://github.com/status-im/nimbus-eth1.git
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411a3cadfa
* renamed nimbus folder to execution_chain * Renamed "nimbus" references to "execution_chain" * fixed wrongly changed http reference * delete snap types file given that it was deleted before this PR merge * missing 'execution_chain' replacement --------- Co-authored-by: pmmiranda <pedro.miranda@nimbus.team>
77 lines
1.9 KiB
Nim
77 lines
1.9 KiB
Nim
# Nimbus
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# Copyright (c) 2024-2025 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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{.push raises: [].}
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import
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../evm/code_bytes,
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../constants,
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results,
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stew/assign2,
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eth/common/eth_types,
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eth/common/eth_types_rlp,
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eth/common/keys
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const
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# the last 0x00 is the version
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DelegationPrefix = [0xef.byte, 0x01, 0x00]
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const
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PER_AUTH_BASE_COST* = 12500
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PER_EMPTY_ACCOUNT_COST* = 25000
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func authority*(auth: Authorization): Opt[Address] =
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const SECP256K1halfN = SECPK1_N div 2
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if auth.v > 1'u64:
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# auth.v must be 0 or 1
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return Opt.none(Address)
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if auth.s > SECP256K1halfN:
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# auth.s must be <= SECP256K1N/2
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return Opt.none(Address)
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let sigHash = rlpHashForSigning(auth)
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var bytes: array[65, byte]
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assign(bytes.toOpenArray(0, 31), auth.r.toBytesBE())
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assign(bytes.toOpenArray(32, 63), auth.s.toBytesBE())
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bytes[64] = auth.v.byte
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let sig = Signature.fromRaw(bytes).valueOr:
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return Opt.none(Address)
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let pubkey = recover(sig, SkMessage(sigHash.data)).valueOr:
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return Opt.none(Address)
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ok(pubkey.toCanonicalAddress())
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func parseDelegation*(code: CodeBytesRef): bool =
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if code.len != 23:
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return false
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if not code.hasPrefix(DelegationPrefix):
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return false
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true
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func addressToDelegation*(auth: Address): array[23, byte] =
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assign(result.toOpenArray(0, 2), DelegationPrefix)
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assign(result.toOpenArray(3, 22), auth.data)
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func parseDelegationAddress*(code: CodeBytesRef): Opt[Address] =
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if code.len != 23:
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return Opt.none(Address)
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if not code.hasPrefix(DelegationPrefix):
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return Opt.none(Address)
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Opt.some(Address(slice[20](code, 3, 22)))
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