This patch series addresses performance issues in the PBKDF2 implementation, which previously caused significant delays when unlocking encrypted partitions. The code has been optimized to eliminate redundant memory allocations and unnecessary hash operations.
These changes result in a substantial improvement: in local testing, the disk unlocking time was reduced from 15 seconds to 4 seconds. Credit to Steffen Winterfeldt for providing a custom PBKDF2 implementation that helped identify these bottlenecks. Gary Lin (2): lib/crypto: Introduce new HMAC functions to reuse buffers lib/pbkdf2: Optimize PBKDF2 by reusing HMAC handle grub-core/disk/geli.c | 4 +- grub-core/lib/crypto.c | 91 ++++++++++++++++++++++++++++++------------ grub-core/lib/pbkdf2.c | 21 ++++++---- include/grub/crypto.h | 8 +++- 4 files changed, 87 insertions(+), 37 deletions(-) -- 2.43.0 _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
