Documentation/admin-guide/sysctl/crypto.rst
Source file repositories/reference/linux-study-clean/Documentation/admin-guide/sysctl/crypto.rst
File Facts
- System
- Linux kernel
- Corpus path
Documentation/admin-guide/sysctl/crypto.rst- Extension
.rst- Size
- 1490 bytes
- Lines
- 48
- Domain
- Support Tooling And Documentation
- Bucket
- Documentation
- Inferred role
- Support Tooling And Documentation: documentation
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
=================
/proc/sys/crypto/
=================
These files show up in ``/proc/sys/crypto/``, depending on the
kernel configuration:
.. contents:: :local:
fips_enabled
============
Read-only flag that indicates whether FIPS mode is enabled.
- ``0``: FIPS mode is disabled (default).
- ``1``: FIPS mode is enabled.
This value is set at boot time via the ``fips=1`` kernel command line
parameter. When enabled, the cryptographic API will restrict the use
of certain algorithms and perform self-tests to ensure compliance with
FIPS (Federal Information Processing Standards) requirements, such as
FIPS 140-2 and the newer FIPS 140-3, depending on the kernel
configuration and the module in use.
fips_name
=========
Read-only file that contains the name of the FIPS module currently in use.
The value is typically configured via the ``CONFIG_CRYPTO_FIPS_NAME``
kernel configuration option.
fips_version
============
Read-only file that contains the version string of the FIPS module.
If ``CONFIG_CRYPTO_FIPS_CUSTOM_VERSION`` is set, it uses the value from
``CONFIG_CRYPTO_FIPS_VERSION``. Otherwise, it defaults to the kernel
release version (``UTS_RELEASE``).
Copyright (c) 2026, Shubham Chakraborty <chakrabortyshubham66@gmail.com>
For general info and legal blurb, please look in
Documentation/admin-guide/sysctl/index.rst.
.. See scripts/check-sysctl-docs to keep this up to date:
.. scripts/check-sysctl-docs -vtable="crypto" \
.. $(git grep -l register_sysctl_)Annotation
- Atlas domain: Support Tooling And Documentation / Documentation.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.