c6d5a76721
To meet FIPS 140 requirements, add support for building a kernel module
"fips140.ko" that contains various cryptographic algorithms built from
existing kernel source files. At load time, the module checks its own
integrity and self-tests its algorithms, then registers the algorithms
with the crypto API to supersede the original algorithms provided by the
kernel itself.
[ebiggers: this commit originated from "ANDROID: crypto: fips140 -
perform load time integrity check", but I've folded many later commits
into it to make forward porting easier. See below]
Original commits:
android12-5.10:
6be141eb36fe ("ANDROID: crypto: fips140 - perform load time integrity check")
868be244bbed ("ANDROID: inject correct HMAC digest into fips140.ko at build time")
091338cb398e ("ANDROID: fips140: add missing static keyword to fips140_init()")
c799c6644b52 ("ANDROID: fips140: adjust some log messages")
92de53472e68 ("ANDROID: fips140: log already-live algorithms")
0af06624eadc ("ANDROID: fips140: check for errors from initcalls")
634445a640a4 ("ANDROID: fips140: fix deadlock in unregister_existing_fips140_algos()")
e886dd4c339e ("ANDROID: fips140: unregister existing DRBG algorithms")
b7397e89db29 ("ANDROID: fips140: add power-up cryptographic self-tests")
50661975be74 ("ANDROID: fips140: add/update module help text")
b397a0387cb2 ("ANDROID: fips140: test all implementations")
17ccefe14021 ("ANDROID: fips140: use full 16-byte IV")
1be58af0776a ("ANDROID: fips140: remove non-prediction-resistant DRBG test")
2b5843ae2d90 ("ANDROID: fips140: add AES-CBC-CTS")
2ee56aad318c ("ANDROID: fips140: add AES-CMAC")
960ebb2b565b ("ANDROID: fips140: add jitterentropy to fips140 module")
e5b14396f9d2 ("ANDROID: fips140: take into account AES-GCM not being approvable")
52b70d491bd4 ("ANDROID: fips140: use FIPS140_CFLAGS when compiling fips140-selftests.c")
6b995f5a5403 ("ANDROID: fips140: preserve RELA sections without relying on the module loader")
e45108ecff64 ("ANDROID: fips140: block crypto operations until tests complete")
ecf9341134d1 ("ANDROID: fips140: remove in-place updating of live algorithms")
482b0323cf29 ("ANDROID: fips140: zeroize temporary values from integrity check")
64d769e53f20 ("ANDROID: fips140: add service indicators")
8d7f609cdaa4 ("ANDROID: fips140: add name and version, and a function to retrieve them")
6b7c37f6c449 ("ANDROID: fips140: use UTS_RELEASE as FIPS version")
903e97a0ca6d ("ANDROID: fips140: refactor evaluation testing support")
97fb2104fe22 ("ANDROID: fips140: add support for injecting integrity error")
109f31ac23f5 ("ANDROID: fips140: add userspace interface for evaluation testing")
android14-5.15:
84572a0c7981 ("ANDROID: fips140: split dump-section+add-section into 2 ops")
b0f8873811d4 ("ANDROID: kleaf: convert fips140 to kleaf")
2535deae8069 ("ANDROID: GKI: Source GKI_BUILD_CONFIG_FRAGMENT after setting all variables")
685a2ade28bb ("ANDROID: fips140: add crypto_memneq() back to the module")
320dfca58a3d ("ANDROID: fips140: fix in-tree builds")
d4966a820397 ("ANDROID: fips140: remove CONFIG_CRYPTO_FIPS140 option")
6da26b8750f5 ("ANDROID: fips140: require 'm' to enable CRYPTO_FIPS140_MOD")
bfcfcce3803b ("ANDROID: fips140: unapply ABS32 relocations generated by KCFI")
63f46b45dda2 ("ANDROID: fips140: eliminate crypto-fips.a build step")
ae4ca7a09bb6 ("ANDROID: fips140: allow building without LTO")
Bug: 153614920
Bug: 188620248
Test: tested that the module builds and can be loaded on raven.
Change-Id: I3fde49dbc3d16b149b072a27ba5b4c6219015c94
Signed-off-by: Ard Biesheuvel <ardb@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
59 lines
2.6 KiB
C
59 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright 2021 Google LLC
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*
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* This file is automatically included by all files built into fips140.ko, via
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* the "-include" compiler flag.
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*/
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/*
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* fips140.ko is built from various unmodified or minimally modified kernel
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* source files, many of which are normally meant to be buildable into different
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* modules themselves. That results in conflicting instances of module_init()
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* and related macros such as MODULE_LICENSE().
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*
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* To solve that, we undefine MODULE to trick the kernel headers into thinking
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* the code is being compiled as built-in. That causes module_init() and
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* related macros to be expanded as they would be for built-in code; e.g.,
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* module_init() adds the function to the .initcalls section of the binary.
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*
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* The .c file that contains the real module_init() for fips140.ko is then
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* responsible for redefining MODULE, and the real module_init() is responsible
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* for executing all the initcalls that were collected into .initcalls.
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*/
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#undef MODULE
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/*
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* Defining KBUILD_MODFILE is also required, since the kernel headers expect it
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* to be defined when code that can be a module is compiled as built-in.
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*/
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#define KBUILD_MODFILE "crypto/fips140"
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/*
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* Disable symbol exports by default. fips140.ko includes various files that
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* use EXPORT_SYMBOL*(), but it's unwanted to export any symbols from fips140.ko
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* except where explicitly needed for FIPS certification reasons.
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*/
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#define __DISABLE_EXPORTS
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/*
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* Redirect all calls to algorithm registration functions to the wrapper
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* functions defined within the module.
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*/
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#define aead_register_instance fips140_aead_register_instance
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#define ahash_register_instance fips140_ahash_register_instance
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#define crypto_register_aead fips140_crypto_register_aead
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#define crypto_register_aeads fips140_crypto_register_aeads
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#define crypto_register_ahash fips140_crypto_register_ahash
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#define crypto_register_ahashes fips140_crypto_register_ahashes
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#define crypto_register_alg fips140_crypto_register_alg
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#define crypto_register_algs fips140_crypto_register_algs
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#define crypto_register_rng fips140_crypto_register_rng
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#define crypto_register_rngs fips140_crypto_register_rngs
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#define crypto_register_shash fips140_crypto_register_shash
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#define crypto_register_shashes fips140_crypto_register_shashes
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#define crypto_register_skcipher fips140_crypto_register_skcipher
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#define crypto_register_skciphers fips140_crypto_register_skciphers
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#define shash_register_instance fips140_shash_register_instance
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#define skcipher_register_instance fips140_skcipher_register_instance
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