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ash_authentication
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3.12.4
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3.11.16
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3.5.1
3.5.0
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3.0.3
Authentication extension for the Ash Framework.
Security advisory:
This version has known vulnerabilities.
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Files
lib/ash_authentication/bcrypt_provider.ex
defmodule AshAuthentication.BcryptProvider do
@moduledoc """
Provides the default implementation of `AshAuthentication.HashProvider` using `Bcrypt`.
"""
@behaviour AshAuthentication.HashProvider
@doc """
Given some user input as a string, convert it into it's hashed form using `Bcrypt`.
## Example
iex> {:ok, hashed} = hash("Marty McFly")
...> String.starts_with?(hashed, "$2b$04$")
true
"""
@impl true
@spec hash(String.t()) :: {:ok, String.t()} | :error
def hash(input) when is_binary(input), do: {:ok, Bcrypt.hash_pwd_salt(input)}
def hash(_), do: :error
@doc """
Check if the user input matches the hash.
## Example
iex> valid?("Marty McFly", "$2b$04$qgacrnrAJz8aPwaVQiGJn.PvryldV.NfOSYYvF/CZAGgMvvzhIE7S")
true
"""
@impl true
@spec valid?(input :: String.t() | nil, hash :: String.t()) :: boolean
def valid?(nil, _hash), do: Bcrypt.no_user_verify()
def valid?(input, hash) when is_binary(input) and is_binary(hash),
do: Bcrypt.verify_pass(input, hash)
@doc """
Simulate a password check to help avoid timing attacks.
## Example
iex> simulate()
false
"""
@impl true
@spec simulate :: false
def simulate, do: Bcrypt.no_user_verify()
end