55 lines
1.4 KiB
Elixir
55 lines
1.4 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Password.Pbkdf2 do
|
|
@moduledoc """
|
|
This module implements Pbkdf2 passwords in terms of Plug.Crypto.
|
|
"""
|
|
|
|
alias Plug.Crypto.KeyGenerator
|
|
|
|
def decode64(str) do
|
|
str
|
|
|> String.replace(".", "+")
|
|
|> Base.decode64!(padding: false)
|
|
end
|
|
|
|
def encode64(bin) do
|
|
bin
|
|
|> Base.encode64(padding: false)
|
|
|> String.replace("+", ".")
|
|
end
|
|
|
|
def verify_pass(password, hash) do
|
|
["pbkdf2-" <> digest, iterations, salt, hash] = String.split(hash, "$", trim: true)
|
|
|
|
salt = decode64(salt)
|
|
|
|
iterations = String.to_integer(iterations)
|
|
|
|
digest = String.to_atom(digest)
|
|
|
|
binary_hash =
|
|
KeyGenerator.generate(password, salt, digest: digest, iterations: iterations, length: 64)
|
|
|
|
encode64(binary_hash) == hash
|
|
end
|
|
|
|
def hash_pwd_salt(password, opts \\ []) do
|
|
salt =
|
|
Keyword.get_lazy(opts, :salt, fn ->
|
|
:crypto.strong_rand_bytes(16)
|
|
end)
|
|
|
|
digest = Keyword.get(opts, :digest, :sha512)
|
|
|
|
iterations =
|
|
Keyword.get(opts, :iterations, Pleroma.Config.get([:password, :iterations], 160_000))
|
|
|
|
binary_hash =
|
|
KeyGenerator.generate(password, salt, digest: digest, iterations: iterations, length: 64)
|
|
|
|
"$pbkdf2-#{digest}$#{iterations}$#{encode64(salt)}$#{encode64(binary_hash)}"
|
|
end
|
|
end
|