From f3c777d5eaa682d878c638192311e52f9c204294 Mon Sep 17 00:00:00 2001 From: Sebastian Lackner Date: Sun, 19 Nov 2017 13:30:04 +0100 Subject: main: Add '-devrandom' commandline option Allows to use /dev/random for generating the master key instead of the default Go implementation. When the kernel random generator has been properly initialized both are considered equally secure, however: * Versions of Go prior to 1.9 just fall back to /dev/urandom if the getrandom() syscall would be blocking (Go Bug #19274) * Kernel versions prior to 3.17 do not support getrandom(), and there is no check if the random generator has been properly initialized before reading from /dev/urandom This is especially useful for embedded hardware with low-entroy. Please note that generation of the master key might block indefinitely if the kernel cannot harvest enough entropy. --- tests/cli/cli_test.go | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'tests/cli/cli_test.go') diff --git a/tests/cli/cli_test.go b/tests/cli/cli_test.go index 97de8da..c7752f2 100644 --- a/tests/cli/cli_test.go +++ b/tests/cli/cli_test.go @@ -34,6 +34,11 @@ func TestInit(t *testing.T) { } } +// Test -init with -devrandom flag +func TestInitDevRandom(t *testing.T) { + test_helpers.InitFS(t, "-devrandom") +} + // Test -init with -aessiv func TestInitAessiv(t *testing.T) { dir := test_helpers.InitFS(t, "-aessiv") -- cgit v1.2.3