Struct BuildInfo 

pub struct BuildInfo {
    pub version: &'static str,
    pub target: &'static str,
    pub aes_backend: &'static str,
    pub polyval_backend: &'static str,
}

Build-time cryptographic backend information.

Populated at compile time from the active cfg flags. On ARMv8 builds compiled with --cfg aes_armv8 --cfg polyval_armv8 (set by the repo’s .cargo/config.toml and both CI workflows) the aes and polyval crates emit hardware AES + PMULL instructions; without those flags they fall back to a constant-time software path that runs at roughly 5× the cost per page.

Published through build_info, exposed by mnemo info on the CLI and mnemo.build_info() from the Python binding. The point is verification — nobody should have to profile a release build to find out whether it’s running software AES.

Fields

version: &'static str

Package version (CARGO_PKG_VERSION), e.g. "0.5.1".

target: &'static str

Target triple this binary was built for, e.g. "aarch64-apple-darwin".

aes_backend: &'static str

Human-readable AES backend. One of:

• "armv8 hardware" — ARM with cfg(aes_armv8)
• "armv8 software" — ARM without the cfg; constant-time fallback
• "x86_64 AES-NI (runtime detect)" — x86_64 with runtime AES-NI detection in the aes crate
• "portable software" — any other target

polyval_backend: &'static str

Human-readable PMULL/CLMUL backend used by GHASH (part of AES-GCM). Same shape as aes_backend but for polyval.

Trait Implementations

impl Clone for BuildInfo

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for BuildInfo

impl Debug for BuildInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for BuildInfo

impl PartialEq for BuildInfo

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for BuildInfo