70 lines
1.9 KiB
Nim
70 lines
1.9 KiB
Nim
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## Nim-Codex
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## Copyright (c) 2024 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))
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## * MIT license ([LICENSE-MIT](LICENSE-MIT))
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## at your option.
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import std/sequtils
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import pkg/libp2p
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import pkg/questionable
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import pkg/questionable/results
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import pkg/poseidon2
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import pkg/poseidon2/io
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import ../codextypes
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import ../merkletree
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import ../errors
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func toCellCid*(cell: Poseidon2Hash): ?!Cid =
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let
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cellMhash = ? MultiHash.init(Pos2Bn128MrklCodec, cell.toBytes).mapFailure
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cellCid = ? Cid.init(CIDv1, CodexSlotCellCodec, cellMhash).mapFailure
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success cellCid
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func toSlotCid*(root: Poseidon2Hash): ?!Cid =
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let
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mhash = ? MultiHash.init($multiCodec("identity"), root.toBytes).mapFailure
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treeCid = ? Cid.init(CIDv1, SlotRootCodec, mhash).mapFailure
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success treeCid
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func toSlotCids*(slotRoots: openArray[Poseidon2Hash]): ?!seq[Cid] =
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success slotRoots.mapIt( ? it.toSlotCid )
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func toSlotsRootsCid*(root: Poseidon2Hash): ?!Cid =
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let
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mhash = ? MultiHash.init($multiCodec("identity"), root.toBytes).mapFailure
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treeCid = ? Cid.init(CIDv1, SlotProvingRootCodec, mhash).mapFailure
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success treeCid
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func toEncodableProof*(
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proof: Poseidon2Proof): ?!CodexProof =
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let
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encodableProof = CodexProof(
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mcodec: multiCodec("identity"), # copy bytes as is
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index: proof.index,
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nleaves: proof.nleaves,
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path: proof.path.mapIt( @( it.toBytes ) ))
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success encodableProof
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func toVerifiableProof*(
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proof: CodexProof): ?!Poseidon2Proof =
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let
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verifiableProof = Poseidon2Proof(
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index: proof.index,
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nleaves: proof.nleaves,
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path: proof.path.mapIt(
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? Poseidon2Hash.fromBytes(it.toArray32).toFailure
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))
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success verifiableProof
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