diff --git a/drivers/android/vendor_hooks.c b/drivers/android/vendor_hooks.c index 8768e7e6c61a..44397e97ff23 100644 --- a/drivers/android/vendor_hooks.c +++ b/drivers/android/vendor_hooks.c @@ -62,6 +62,7 @@ #include #include #include +#include /* * Export tracepoints that act as a bare tracehook (ie: have no trace event @@ -321,3 +322,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_user); EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_balance_anon_file_reclaim); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpuidle_psci_enter); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpuidle_psci_exit); +EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_sha256); diff --git a/include/trace/hooks/fips140.h b/include/trace/hooks/fips140.h new file mode 100644 index 000000000000..10fe4bbaee08 --- /dev/null +++ b/include/trace/hooks/fips140.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM fips140 +#define TRACE_INCLUDE_PATH trace/hooks + +#if !defined(_TRACE_HOOK_FIPS140_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_HOOK_FIPS140_H +#include +#include + +/* + * This hook exists only for the benefit of the FIPS140 crypto module, which + * uses it to swap out the underlying implementation with one that is integrity + * checked as per FIPS 140 requirements. No other uses are allowed or + * supported. + */ +DECLARE_HOOK(android_vh_sha256, + TP_PROTO(const u8 *data, + unsigned int len, + u8 *out, + int *hook_inuse), + TP_ARGS(data, len, out, hook_inuse)); + +#endif /* _TRACE_HOOK_FIPS140_H */ + +/* This part must be outside protection */ +#include diff --git a/lib/crypto/sha256.c b/lib/crypto/sha256.c index 2321f6cb322f..216a0d9787b0 100644 --- a/lib/crypto/sha256.c +++ b/lib/crypto/sha256.c @@ -17,6 +17,7 @@ #include #include #include +#include static inline u32 Ch(u32 x, u32 y, u32 z) { @@ -284,6 +285,14 @@ void sha256(const u8 *data, unsigned int len, u8 *out) { struct sha256_state sctx; +#if defined(CONFIG_CRYPTO_FIPS140) && !defined(BUILD_FIPS140_KO) + int hook_inuse = 0; + + trace_android_vh_sha256(data, len, out, &hook_inuse); + if (hook_inuse) + return; +#endif + sha256_init(&sctx); sha256_update(&sctx, data, len); sha256_final(&sctx, out);