On Mon, Oct 15, 2018 at 1:28 PM Matthias Schmidt <matthias.schm...@gmail.com> wrote: > > Hi Eric, > > thanks *a lot* for your valuable feedback! I really appreciate it. See > comments inline: > > Am Montag, 15. Oktober 2018 12:09:32 UTC+2 schrieb EricR: >> >> Since you're looking for opinions on the security concept, two questions >> spring immediately to my mind: >> >> 1. Does the daemon keep the sensitive data in locked memory that cannot be >> paged out? If so, how cross-platform is this? > > > No it doesn't. As of now i consider the root-user a good guy ;-) > He's the only one who could access the pagefiles anyway. > > So is this really an issue? If yes i could use this cross-platform solution > to pin the key: > > https://github.com/awnumar/memguard > > >> >> >> 2. How does the client communicate securely with the daemon? Which >> encryption protocol/handshake is used for this? (If it just uses a socket, >> what would prevent another process from reading out the master password?) > > > It's in fact a unix domain socket file which is only accessible for the owner > of the key. ( Thanks for bringing this up, i forgot to flag the file > correctly - it's now fixed). > Relying on the file permissions in unix shouldn't be a problem, right? > > cheers & again - many thanks, > > Matthias
You seem to be putting a lot of trust in facilities that are trivially exploitable to a determined attacker. For software like a password manager, assuming the kernel is secure is a poor security model. In addition to the existing attack surface, we live in a world where side-channel attacks are becoming more common, e.g., Spectre and Meltdown, so it isn't safe to assume the kernel or hardware are secure. A password manager needs to have a robust security model that has a minimal trust model if it is to be more than a toy. Just my $0.02 -- Christopher Nielsen "They who can give up essential liberty for temporary safety, deserve neither liberty nor safety." --Benjamin Franklin "The tree of liberty must be refreshed from time to time with the blood of patriots & tyrants." --Thomas Jefferson -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
