| /* Copyright (c) 2017, Google Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| |
| #if !defined(_GNU_SOURCE) |
| #define _GNU_SOURCE // needed for syscall() on Linux. |
| #endif |
| |
| #include <openssl/crypto.h> |
| |
| #include <stdlib.h> |
| #if defined(BORINGSSL_FIPS) |
| #include <sys/mman.h> |
| #include <unistd.h> |
| #endif |
| |
| #include <openssl/digest.h> |
| #include <openssl/hmac.h> |
| #include <openssl/sha.h> |
| |
| #include "../internal.h" |
| |
| #include "aes/aes.c" |
| #include "aes/aes_nohw.c" |
| #include "aes/key_wrap.c" |
| #include "aes/mode_wrappers.c" |
| #include "bn/add.c" |
| #include "bn/asm/x86_64-gcc.c" |
| #include "bn/bn.c" |
| #include "bn/bytes.c" |
| #include "bn/cmp.c" |
| #include "bn/ctx.c" |
| #include "bn/div.c" |
| #include "bn/div_extra.c" |
| #include "bn/exponentiation.c" |
| #include "bn/gcd.c" |
| #include "bn/gcd_extra.c" |
| #include "bn/generic.c" |
| #include "bn/jacobi.c" |
| #include "bn/montgomery.c" |
| #include "bn/montgomery_inv.c" |
| #include "bn/mul.c" |
| #include "bn/prime.c" |
| #include "bn/random.c" |
| #include "bn/rsaz_exp.c" |
| #include "bn/shift.c" |
| #include "bn/sqrt.c" |
| #include "cipher/aead.c" |
| #include "cipher/cipher.c" |
| #include "cipher/e_aes.c" |
| #include "cipher/e_aesccm.c" |
| #include "cmac/cmac.c" |
| #include "dh/check.c" |
| #include "dh/dh.c" |
| #include "digest/digest.c" |
| #include "digest/digests.c" |
| #include "digestsign/digestsign.c" |
| #include "ecdh/ecdh.c" |
| #include "ecdsa/ecdsa.c" |
| #include "ec/ec.c" |
| #include "ec/ec_key.c" |
| #include "ec/ec_montgomery.c" |
| #include "ec/felem.c" |
| #include "ec/oct.c" |
| #include "ec/p224-64.c" |
| #include "ec/p256.c" |
| #include "ec/p256-nistz.c" |
| #include "ec/scalar.c" |
| #include "ec/simple.c" |
| #include "ec/simple_mul.c" |
| #include "ec/util.c" |
| #include "ec/wnaf.c" |
| #include "hkdf/hkdf.c" |
| #include "hmac/hmac.c" |
| #include "md4/md4.c" |
| #include "md5/md5.c" |
| #include "modes/cbc.c" |
| #include "modes/cfb.c" |
| #include "modes/ctr.c" |
| #include "modes/gcm.c" |
| #include "modes/gcm_nohw.c" |
| #include "modes/ofb.c" |
| #include "modes/polyval.c" |
| #include "rand/ctrdrbg.c" |
| #include "rand/fork_detect.c" |
| #include "rand/rand.c" |
| #include "rand/urandom.c" |
| #include "rsa/blinding.c" |
| #include "rsa/padding.c" |
| #include "rsa/rsa.c" |
| #include "rsa/rsa_impl.c" |
| #include "self_check/fips.c" |
| #include "self_check/self_check.c" |
| #include "service_indicator/service_indicator.c" |
| #include "sha/sha1.c" |
| #include "sha/sha256.c" |
| #include "sha/sha512.c" |
| #include "tls/kdf.c" |
| |
| |
| #if defined(BORINGSSL_FIPS) |
| |
| #if !defined(OPENSSL_ASAN) |
| |
| // These symbols are filled in by delocate.go (in static builds) or a linker |
| // script (in shared builds). They point to the start and end of the module, and |
| // the location of the integrity hash, respectively. |
| extern const uint8_t BORINGSSL_bcm_text_start[]; |
| extern const uint8_t BORINGSSL_bcm_text_end[]; |
| extern const uint8_t BORINGSSL_bcm_text_hash[]; |
| #if defined(BORINGSSL_SHARED_LIBRARY) |
| extern const uint8_t BORINGSSL_bcm_rodata_start[]; |
| extern const uint8_t BORINGSSL_bcm_rodata_end[]; |
| #endif |
| |
| // assert_within is used to sanity check that certain symbols are within the |
| // bounds of the integrity check. It checks that start <= symbol < end and |
| // aborts otherwise. |
| static void assert_within(const void *start, const void *symbol, |
| const void *end) { |
| const uintptr_t start_val = (uintptr_t) start; |
| const uintptr_t symbol_val = (uintptr_t) symbol; |
| const uintptr_t end_val = (uintptr_t) end; |
| |
| if (start_val <= symbol_val && symbol_val < end_val) { |
| return; |
| } |
| |
| fprintf( |
| stderr, |
| "FIPS module doesn't span expected symbol. Expected %p <= %p < %p\n", |
| start, symbol, end); |
| BORINGSSL_FIPS_abort(); |
| } |
| |
| #if defined(OPENSSL_ANDROID) && defined(OPENSSL_AARCH64) |
| static void BORINGSSL_maybe_set_module_text_permissions(int permission) { |
| // Android may be compiled in execute-only-memory mode, in which case the |
| // .text segment cannot be read. That conflicts with the need for a FIPS |
| // module to hash its own contents, therefore |mprotect| is used to make |
| // the module's .text readable for the duration of the hashing process. In |
| // other build configurations this is a no-op. |
| const uintptr_t page_size = getpagesize(); |
| const uintptr_t page_start = |
| ((uintptr_t)BORINGSSL_bcm_text_start) & ~(page_size - 1); |
| |
| if (mprotect((void *)page_start, |
| ((uintptr_t)BORINGSSL_bcm_text_end) - page_start, |
| permission) != 0) { |
| perror("BoringSSL: mprotect"); |
| } |
| } |
| #else |
| static void BORINGSSL_maybe_set_module_text_permissions(int permission) {} |
| #endif // !ANDROID |
| |
| #endif // !ASAN |
| |
| static void __attribute__((constructor)) |
| BORINGSSL_bcm_power_on_self_test(void) { |
| CRYPTO_library_init(); |
| |
| #if !defined(OPENSSL_ASAN) |
| // Integrity tests cannot run under ASAN because it involves reading the full |
| // .text section, which triggers the global-buffer overflow detection. |
| if (!BORINGSSL_integrity_test()) { |
| goto err; |
| } |
| #endif // OPENSSL_ASAN |
| |
| if (!boringssl_self_test_startup()) { |
| goto err; |
| } |
| |
| return; |
| |
| err: |
| BORINGSSL_FIPS_abort(); |
| } |
| |
| #if !defined(OPENSSL_ASAN) |
| int BORINGSSL_integrity_test(void) { |
| const uint8_t *const start = BORINGSSL_bcm_text_start; |
| const uint8_t *const end = BORINGSSL_bcm_text_end; |
| |
| assert_within(start, AES_encrypt, end); |
| assert_within(start, RSA_sign, end); |
| assert_within(start, RAND_bytes, end); |
| assert_within(start, EC_GROUP_cmp, end); |
| assert_within(start, SHA256_Update, end); |
| assert_within(start, ECDSA_do_verify, end); |
| assert_within(start, EVP_AEAD_CTX_seal, end); |
| |
| #if defined(BORINGSSL_SHARED_LIBRARY) |
| const uint8_t *const rodata_start = BORINGSSL_bcm_rodata_start; |
| const uint8_t *const rodata_end = BORINGSSL_bcm_rodata_end; |
| #else |
| // In the static build, read-only data is placed within the .text segment. |
| const uint8_t *const rodata_start = BORINGSSL_bcm_text_start; |
| const uint8_t *const rodata_end = BORINGSSL_bcm_text_end; |
| #endif |
| |
| assert_within(rodata_start, kPrimes, rodata_end); |
| assert_within(rodata_start, kP256Params, rodata_end); |
| assert_within(rodata_start, kPKCS1SigPrefixes, rodata_end); |
| |
| uint8_t result[SHA256_DIGEST_LENGTH]; |
| const EVP_MD *const kHashFunction = EVP_sha256(); |
| if (!boringssl_self_test_sha256() || |
| !boringssl_self_test_hmac_sha256()) { |
| return 0; |
| } |
| |
| static const uint8_t kHMACKey[64] = {0}; |
| unsigned result_len; |
| HMAC_CTX hmac_ctx; |
| HMAC_CTX_init(&hmac_ctx); |
| if (!HMAC_Init_ex(&hmac_ctx, kHMACKey, sizeof(kHMACKey), kHashFunction, |
| NULL /* no ENGINE */)) { |
| fprintf(stderr, "HMAC_Init_ex failed.\n"); |
| return 0; |
| } |
| |
| BORINGSSL_maybe_set_module_text_permissions(PROT_READ | PROT_EXEC); |
| #if defined(BORINGSSL_SHARED_LIBRARY) |
| uint64_t length = end - start; |
| HMAC_Update(&hmac_ctx, (const uint8_t *) &length, sizeof(length)); |
| HMAC_Update(&hmac_ctx, start, length); |
| |
| length = rodata_end - rodata_start; |
| HMAC_Update(&hmac_ctx, (const uint8_t *) &length, sizeof(length)); |
| HMAC_Update(&hmac_ctx, rodata_start, length); |
| #else |
| HMAC_Update(&hmac_ctx, start, end - start); |
| #endif |
| BORINGSSL_maybe_set_module_text_permissions(PROT_EXEC); |
| |
| if (!HMAC_Final(&hmac_ctx, result, &result_len) || |
| result_len != sizeof(result)) { |
| fprintf(stderr, "HMAC failed.\n"); |
| return 0; |
| } |
| HMAC_CTX_cleanse(&hmac_ctx); // FIPS 140-3, AS05.10. |
| |
| const uint8_t *expected = BORINGSSL_bcm_text_hash; |
| |
| if (!check_test(expected, result, sizeof(result), "FIPS integrity test")) { |
| #if !defined(BORINGSSL_FIPS_BREAK_TESTS) |
| return 0; |
| #endif |
| } |
| |
| OPENSSL_cleanse(result, sizeof(result)); // FIPS 140-3, AS05.10. |
| return 1; |
| } |
| #endif // OPENSSL_ASAN |
| |
| void BORINGSSL_FIPS_abort(void) { |
| for (;;) { |
| abort(); |
| exit(1); |
| } |
| } |
| |
| #endif // BORINGSSL_FIPS |