Cargo Features

[dependencies]
zero_vault_core = { version = "1.0.1", default-features = false, features = ["std", "secure-memory", "fips", "defense-in-depth", "hardware-backed"] }
default = defense-in-depth, secure-memory, std

These default features are set whenever zero_vault_core is added without default-features = false somewhere in the dependency tree.

std default
secure-memory default fips?
fips = secure-memory
defense-in-depth default
hardware-backed

zero_vault_core has 6 features without comments.