Crate nexcore_hash 

Zero-dependency cryptographic hashing for the NexCore ecosystem.

Replaces sha2, hmac, and digest crates with NexVigilant-owned implementations validated against NIST CAVP and RFC 4231 test vectors.

Modules

hmac

HMAC-SHA256 implementation per RFC 2104.

sha256

SHA-256 implementation per FIPS 180-4.