OpenPBKDF2

An open-source ASIC implementation of the PBKDF2 algorithm using SHA256 encryption

Authors: Davis Sauer, Eli Orona

Development Log:

Proposal

• https://www.youtube.com/watch?v=NauiHZyn6Ak

Demo 1

• https://www.youtube.com/watch?v=NauiHZyn6Ak

Demo 2

• https://youtu.be/THS_AII5xEg

Demo 3

• https://youtu.be/pvE8ix76I0A

Final Presentation

• https://www.youtube.com/watch?v=zfRz6UrT6so

Architecture

BSG_CHIP TOP MODULE

KDA MODULE

PBKDF2 CHUNK MODULE

HMAC_SHA256 MODULE

Limitations/Future Work

• Maximum size of input password is 64 characters and maximum salt size is 55 characters
• Only supports HMAC_SHA256. Additional hashing algorithm options would make the chip more versatile
• Only supports output hash sizes of 32, 64, 96, 128 bytes. This could easily be extended by adding more PBKDF2 chunks to the KDA module
• Multicycle pathing with the hashing module has potential for perforamnce gains by removing unnecessary clk->q delays from the hashing datapath
• Further floorplanning and chip sizing optimization could improve datapaths