hardware-enclave 0.1.6

Hardware-backed key management — macOS Secure Enclave, Windows TPM 2.0, Linux TPM/keyring — plus in-process memory protection
Documentation 
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// Copyright 2026 Jay Gowdy
// SPDX-License-Identifier: MIT

//! Platform diagnostics for troubleshooting hardware key management failures.
//!
//! On Windows, [`collect_vm_diagnostics`] gathers hypervisor-detection data used
//! to decide whether a DPAPI software fallback is appropriate when TPM 2.0 is
//! unavailable (e.g. in a VM without TPM passthrough).
//!
//! All items in this module require the `signing` or `encryption` feature.
//! The DPAPI/VM items additionally require Windows.

/// Hypervisor / VM detection results collected from CPUID, registry, and service
/// enumeration on Windows.
///
/// All fields are best-effort — missing data is `None` or an empty `Vec`.
#[cfg(all(
    any(feature = "signing", feature = "encryption"),
    target_os = "windows"
))]
pub use crate::internal::windows::dpapi_fallback::VmDiagnostics;

/// Collect VM/hypervisor diagnostics on Windows.
///
/// Reads CPUID hypervisor bit, Hyper-V and VMware registry keys, Windows service
/// names, and the display-adapter string to determine whether the host is a VM.
#[cfg(all(
    any(feature = "signing", feature = "encryption"),
    target_os = "windows"
))]
pub use crate::internal::windows::dpapi_fallback::collect_vm_diagnostics;

/// Decision returned by [`should_use_dpapi_after_tpm_failure`].
#[cfg(all(
    any(feature = "signing", feature = "encryption"),
    target_os = "windows"
))]
pub use crate::internal::windows::dpapi_fallback::FallbackDecision;

/// Decide whether a DPAPI software fallback is appropriate after a TPM failure.
///
/// Returns a [`FallbackDecision`] based on the error string and current
/// VM-detection diagnostics.
#[cfg(all(
    any(feature = "signing", feature = "encryption"),
    target_os = "windows"
))]
pub use crate::internal::windows::dpapi_fallback::should_use_dpapi_after_tpm_failure;