nimbus-eth1/nimbus/context.nim

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# Nimbus
# Copyright (c) 2021 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
accounts/manager,
stew/results,
eth/keys
export manager
type
EthContext* = ref object
am*: AccountsManager
# You should only create one instance of the RNG per application / library
# Ref is used so that it can be shared between components
rng*: ref HmacDrbgContext
proc newEthContext*(): EthContext =
result = new(EthContext)
result.am = AccountsManager.init()
result.rng = newRng()
proc randomPrivateKey*(ctx: EthContext): PrivateKey =
random(PrivateKey, ctx.rng[])
proc randomKeyPair*(ctx: EthContext): KeyPair =
random(KeyPair, ctx.rng[])
proc hexToKeyPair*(ctx: EthContext, hexPrivateKey: string): Result[KeyPair, string] =
if hexPrivateKey.len == 0:
let privateKey = ctx.randomPrivateKey()
ok(privateKey.toKeyPair())
else:
let res = PrivateKey.fromHex(hexPrivateKey)
if res.isErr:
return err($res.error)
ok(res.get().toKeyPair())