Hi all, The request is that, we'd like to generate a symmetric key derived from user provided passphase(not rely on any third-party library). May I know if there is a PBKDF2(Password-Based Key Derivation Function 2) support in the kernel? (https://tools.ietf.org/html/rfc2898#5.2) We have hmac sha1 in the kernel, do we have plan to port/implement corresponding PBKDF2 in the kernel too? Thanks, Yu