mirror of
https://github.com/luxfi/node.git
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zeekay
7cf87b230b
The module already called itself github.com/luxfi/node while containing no node in Go: cmd/luxd was twenty-one lines that printed the size of a few types, and the Go column of the matrix measured a VM plugin. A repo that fetches the thing it claims to be has not replaced it, so the Go sources move in — 1515 files, the daemon and everything under it — and the build reaches outside this module for nothing. Rust and C++ sit beside it unchanged and are still measured against it by the differential. That is the point of one repo: the reference implementation and the two ports are the same checkout, so parity is a thing you can run rather than a thing you assert. Verified: builds, and the closure carries no lux-private — checked at build time rather than believed. The daemon starts twelve chains on a local network (P X C Q Z A B G K M F, plus D through its plugin) and reports healthy.
57 lines
1.5 KiB
Go
57 lines
1.5 KiB
Go
// Copyright (C) 2019-2025, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package cb58
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import (
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"bytes"
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"errors"
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"fmt"
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"math"
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"github.com/mr-tron/base58/base58"
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"github.com/luxfi/crypto/hash"
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)
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const checksumLen = 4
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var (
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ErrBase58Decoding = errors.New("base58 decoding error")
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ErrMissingChecksum = errors.New("input string is smaller than the checksum size")
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ErrBadChecksum = errors.New("invalid input checksum")
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errEncodingOverFlow = errors.New("encoding overflow")
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)
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// Encode [bytes] to a string using cb58 format.
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// [bytes] may be nil, in which case it will be treated the same as an empty
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// slice.
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func Encode(bytes []byte) (string, error) {
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bytesLen := len(bytes)
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if bytesLen > math.MaxInt32-checksumLen {
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return "", errEncodingOverFlow
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}
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checked := make([]byte, bytesLen+checksumLen)
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copy(checked, bytes)
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copy(checked[len(bytes):], hash.Checksum(bytes, checksumLen))
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return base58.Encode(checked), nil
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}
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// Decode [str] to bytes from cb58.
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func Decode(str string) ([]byte, error) {
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decodedBytes, err := base58.Decode(str)
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if err != nil {
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return nil, fmt.Errorf("%w: %w", ErrBase58Decoding, err)
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}
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if len(decodedBytes) < checksumLen {
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return nil, ErrMissingChecksum
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}
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// Verify the checksum
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rawBytes := decodedBytes[:len(decodedBytes)-checksumLen]
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checksum := decodedBytes[len(decodedBytes)-checksumLen:]
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if !bytes.Equal(checksum, hash.Checksum(rawBytes, checksumLen)) {
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return nil, ErrBadChecksum
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}
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return rawBytes, nil
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}
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