Subsequent Measures

1. Will open up another issue that briefly breaks down the benefits / properties of Argon2 as a KDF (specifically the many that Scrypt fails to provide). In addition, the fact that there are three instantiations of this KDF that, in itself, serves as an adjustable parameter means that not only are users receiving superior security (comparative to Scrypt), more informed users are given the opportunity to tweak the algorithm in a way that flexibly addresses their unique threat environment / perceived adversary

2. Currently collaborating with the maintainer of gocryptfs on this (hopefully; the step-by-step breakdown of how to swap out Scrypt was done when this was first brought up to the lead maintainer as everyone can see above)

Pull Request Will Be Made Before the End of the Week

In my opinion, this should be considered a time sensitive issue because the successful implementation of a cache timing attack on someone using Scrypt means that they have put themselves in a position to viably extract the original password...and since this password is what gets piped into 'gocryptfs' to mount containers, the solution itself (file system encryption overlay) is equally as vulnerable since the password serves as the encryption / decryption key.

LibreCryptography

Forwarded from Librehash ANN

Subsequent Measures

1. Will open up another issue that briefly breaks down the benefits / properties of Argon2 as a KDF (specifically the many that Scrypt fails to provide). In addition, the fact that there are three instantiations of this KDF that, in itself, serves as an adjustable parameter means that not only are users receiving superior security (comparative to Scrypt), more informed users are given the opportunity to tweak the algorithm in a way that flexibly addresses their unique threat environment / perceived adversary

2. Currently collaborating with the maintainer of gocryptfs on this (hopefully; the step-by-step breakdown of how to swap out Scrypt was done when this was first brought up to the lead maintainer as everyone can see above)

Pull Request Will Be Made Before the End of the Week

In my opinion, this should be considered a time sensitive issue because the successful implementation of a cache timing attack on someone using Scrypt means that they have put themselves in a position to viably extract the original password...and since this password is what gets piped into 'gocryptfs' to mount containers, the solution itself (file system encryption overlay) is equally as vulnerable since the password serves as the encryption / decryption key.

hottg.com/librecryptography/188

39 viewsOct 27, 2020 at 16:53