nimbus-eth1/fluffy/content.nim

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# Nimbus
# Copyright (c) 2021 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
# https://github.com/ethereum/stateless-ethereum-specs/blob/master/state-network.md#content
{.push raises: [Defect].}
import
nimcrypto/[sha2, hash], eth/ssz/ssz_serialization
type
ByteList* = List[byte, 2048]
ContentType* = enum
Account = 0x01
ContractStorage = 0x02
ContractBytecode = 0x03
NetworkId* = uint16
NodeHash* = List[byte, 32] # MDigest[32 * 8] - sha256
CodeHash* = List[byte, 32] # MDigest[32 * 8] - keccak256
Address* = List[byte, 20]
ContentKey* = object
# TODO: How shall we deal with the different ContentKey structures?
networkId: NetworkId
contentType: ContentType
address: Address
triePath: ByteList
nodeHash: NodeHash
ContentId* = MDigest[32 * 8]
template toSszType*(x: auto): auto =
mixin toSszType
when x is ContentType: uint8(x)
else: x
func toContentId*(contentKey: ContentKey): ContentId =
sha2.sha_256.digest(SSZ.encode(contentKey))