nim-codex/codex/utils/keyutils.nim

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## Nim-Codex
## Copyright (c) 2022 Status Research & Development GmbH
## Licensed under either of
## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
## * MIT license ([LICENSE-MIT](LICENSE-MIT))
## at your option.
## This file may not be copied, modified, or distributed except according to
## those terms.
import pkg/upraises
push: {.upraises: [].}
import pkg/chronicles
import pkg/questionable/results
import pkg/libp2p/crypto/crypto
import ./fileutils
import ../errors
import ../rng
export crypto
type
CodexKeyError = object of CodexError
CodexKeyUnsafeError = object of CodexKeyError
proc setupKey*(path: string): ?!PrivateKey =
if not path.fileAccessible({AccessFlags.Find}):
info "Creating a private key and saving it"
let
res = ? PrivateKey.random(Rng.instance()[]).mapFailure(CodexKeyError)
bytes = ? res.getBytes().mapFailure(CodexKeyError)
? path.secureWriteFile(bytes).mapFailure(CodexKeyError)
return PrivateKey.init(bytes).mapFailure(CodexKeyError)
info "Found a network private key"
if not ? checkSecureFile(path).mapFailure(CodexKeyError):
warn "The network private key file is not safe, aborting"
return failure newException(
CodexKeyUnsafeError, "The network private key file is not safe")
let kb = ? path.readAllBytes().mapFailure(CodexKeyError)
return PrivateKey.init(kb).mapFailure(CodexKeyError)