Crate gmcrypto_core 

Constant-time-designed pure-Rust SM2 / SM3 primitives.

See the workspace README.md for scope, threat model, and the honest framing of the in-CI dudect-based timing-leak regression harness.

Crate features

• default — no_std, alloc-only.
• std — opt-in; reserved for future file-I/O wire-format helpers (v0.3+).

Modules

asn1

Minimal ASN.1 DER subset.

hmac

HMAC-SM3 — RFC 2104 keyed MAC over GB/T 32905-2016 SM3.

kdf

Key derivation functions.

sm2

SM2 elliptic curve cryptography (GB/T 32918-2017).

sm3

SM3 hash function (GB/T 32905-2016).

sm4

SM4 block cipher (GB/T 32907-2016) and operating modes.