ID-based key exchange algorithms provides the capability of using a human-readable ID as the public key and generate corresponding private key base on that ID. With a pre-defined pattern, the ID could be generated with openly known knowledge of the opponent, eliminating the need of a certificate and avoiding the whole verification chain. Instead of CAs, ID-based crypto algorithm relies on a KGC (Key Generation Center) for generating and distrubuting of private keys. Unlike CAs, KGC is not directly involved in any of the crypto procedures. SM9 is an ID-based crypto algorithm within the ShangMi family. The key exchange part of it was accepted in ISO/IEC 11770-3:2021. This patchset introduces key exchange capability of SM9. ID-based crypto algorithms are widely accepted as the next gen asymmetric cryptography for various fileds including telecommunication, emails, IoT etc.. You can find the technical details in the last two patch. v4: Fixed typo in commit message; Marked non-exported function as static. v3: Fixed memleaks. v2: Updated the identification of initiator, changed function name for getting sk; Split the patchset into 3 patches in order to ease code review. GUO Zihua (3): MPI: Export mpi_add_ui and mpi_mod for SM9 crypto: Introduce SM9 key exchange algorithm library crypto: Introduce SM9 key exchange algorithm crypto/Kconfig | 15 + crypto/Makefile | 4 + crypto/sm9.c | 916 ++++++++++++++++++++++++++ crypto/sm9_lib.c | 1584 +++++++++++++++++++++++++++++++++++++++++++++ crypto/sm9_lib.h | 92 +++ lib/mpi/mpi-add.c | 2 +- lib/mpi/mpi-mod.c | 1 + 7 files changed, 2613 insertions(+), 1 deletion(-) create mode 100644 crypto/sm9.c create mode 100644 crypto/sm9_lib.c create mode 100644 crypto/sm9_lib.h -- 2.17.1
