# `AshAuthentication.SHA256Provider`
[🔗](https://github.com/team-alembic/ash_authentication/blob/main/lib/ash_authentication/sha256_provider.ex#L5)

Provides an implementation of `AshAuthentication.HashProvider` using SHA-256.

This is a fast, deterministic hash provider suitable for hashing high-entropy
system-generated values like recovery codes. It is NOT suitable for hashing
user-chosen passwords — use `AshAuthentication.BcryptProvider` or
`AshAuthentication.Argon2Provider` for passwords.

Because SHA-256 is fast, inputs must have sufficient entropy to resist offline
brute-force attacks. This provider requires a minimum of 60 bits of input
entropy (enforced at compile time by the strategy verifier).

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*Consult [api-reference.md](api-reference.md) for complete listing*