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libgcrypt
libgcrypt-1.8.3-fips-ctor.patch
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File libgcrypt-1.8.3-fips-ctor.patch of Package libgcrypt
diff -up libgcrypt-1.8.3/cipher/md.c.fips-ctor libgcrypt-1.8.3/cipher/md.c --- libgcrypt-1.8.3/cipher/md.c.fips-ctor 2017-11-23 19:16:58.000000000 +0100 +++ libgcrypt-1.8.3/cipher/md.c 2018-07-12 13:24:54.088403006 +0200 @@ -411,11 +411,8 @@ md_enable (gcry_md_hd_t hd, int algorith if (!err && algorithm == GCRY_MD_MD5 && fips_mode ()) { - _gcry_inactivate_fips_mode ("MD5 used"); if (_gcry_enforced_fips_mode () ) { - /* We should never get to here because we do not register - MD5 in enforced fips mode. But better throw an error. */ err = GPG_ERR_DIGEST_ALGO; } } diff -up libgcrypt-1.8.3/src/fips.c.fips-ctor libgcrypt-1.8.3/src/fips.c --- libgcrypt-1.8.3/src/fips.c.fips-ctor 2018-07-12 13:24:54.075402698 +0200 +++ libgcrypt-1.8.3/src/fips.c 2018-07-12 13:24:54.088403006 +0200 @@ -91,6 +91,31 @@ static void fips_new_state (enum module_ +/* Initialize the FSM lock - this function may only + be called once and is intended to be run from the library + constructor */ +void +_gcry_initialize_fsm_lock (void) +{ + gpg_error_t err; + /* Intitialize the lock to protect the FSM. */ + err = gpgrt_lock_init (&fsm_lock); + if (err) + { + /* If that fails we can't do anything but abort the + process. We need to use log_info so that the FSM won't + get involved. */ + log_info ("FATAL: failed to create the FSM lock in libgcrypt: %s\n", + gpg_strerror (err)); +#ifdef HAVE_SYSLOG + syslog (LOG_USER|LOG_ERR, "Libgcrypt error: " + "creating FSM lock failed: %s - abort", + gpg_strerror (err)); +#endif /*HAVE_SYSLOG*/ + abort (); + } +} + /* Check whether the OS is in FIPS mode and record that in a module local variable. If FORCE is passed as true, fips mode will be enabled anyway. Note: This function is not thread-safe and should @@ -100,7 +125,6 @@ void _gcry_initialize_fips_mode (int force) { static int done; - gpg_error_t err; /* Make sure we are not accidentally called twice. */ if (done) @@ -179,24 +203,6 @@ _gcry_initialize_fips_mode (int force) /* Yes, we are in FIPS mode. */ FILE *fp; - /* Intitialize the lock to protect the FSM. */ - err = gpgrt_lock_init (&fsm_lock); - if (err) - { - /* If that fails we can't do anything but abort the - process. We need to use log_info so that the FSM won't - get involved. */ - log_info ("FATAL: failed to create the FSM lock in libgcrypt: %s\n", - gpg_strerror (err)); -#ifdef HAVE_SYSLOG - syslog (LOG_USER|LOG_ERR, "Libgcrypt error: " - "creating FSM lock failed: %s - abort", - gpg_strerror (err)); -#endif /*HAVE_SYSLOG*/ - abort (); - } - - /* If the FIPS force files exists, is readable and has a number != 0 on its first line, we enable the enforced fips mode. */ fp = fopen (FIPS_FORCE_FILE, "r"); @@ -359,16 +365,20 @@ _gcry_fips_is_operational (void) { int result; - if (!fips_mode ()) + lock_fsm (); + if (current_state == STATE_POWERON && !fips_mode ()) + /* If we are at this point in POWERON state it means the FIPS + module installation was not completed. (/etc/system-fips + is not present.) */ result = 1; else { - lock_fsm (); - if (current_state == STATE_INIT) + if (current_state == STATE_INIT || current_state == STATE_SELFTEST) { - /* If we are still in the INIT state, we need to run the - selftests so that the FSM can eventually get into - operational state. Given that we would need a 2-phase + /* If we are still in the INIT (or SELFTEST) state, + we need to run (or finish) the selftests so + that the FSM can eventually get into operational + state. Given that we would need a 2-phase initialization of libgcrypt, but that has traditionally not been enforced, we use this on demand self-test checking. Note that Proper applications would do the @@ -384,9 +394,11 @@ _gcry_fips_is_operational (void) lock_fsm (); } - result = (current_state == STATE_OPERATIONAL); - unlock_fsm (); + result = (current_state == STATE_OPERATIONAL) || !fips_mode (); + /* We always run the selftests but ignore the result + in non-FIPS mode. */ } + unlock_fsm (); return result; } @@ -709,9 +721,25 @@ _gcry_fips_run_selftests (int extended) { enum module_states result = STATE_ERROR; gcry_err_code_t ec = GPG_ERR_SELFTEST_FAILED; + int in_poweron; - if (fips_mode ()) - fips_new_state (STATE_SELFTEST); + lock_fsm (); + in_poweron = (current_state == STATE_POWERON); + unlock_fsm (); + + fips_new_state (STATE_SELFTEST); + + /* We first check the integrity of the binary. + If run from the constructor we are in POWERON state, + we return and finish the remaining selftests before + real use of the library. It will be in the POWERON + state meanwhile. */ + if (in_poweron) + if (check_binary_integrity ()) + goto leave; + + if (in_poweron) + return 0; if (run_cipher_selftests (extended)) goto leave; @@ -730,18 +758,12 @@ _gcry_fips_run_selftests (int extended) if (run_pubkey_selftests (extended)) goto leave; - /* Now check the integrity of the binary. We do this this after - having checked the HMAC code. */ - if (check_binary_integrity ()) - goto leave; - /* All selftests passed. */ result = STATE_OPERATIONAL; ec = 0; leave: - if (fips_mode ()) - fips_new_state (result); + fips_new_state (result); return ec; } @@ -797,6 +819,7 @@ fips_new_state (enum module_states new_s { case STATE_POWERON: if (new_state == STATE_INIT + || new_state == STATE_SELFTEST || new_state == STATE_ERROR || new_state == STATE_FATALERROR) ok = 1; @@ -811,6 +834,8 @@ fips_new_state (enum module_states new_s case STATE_SELFTEST: if (new_state == STATE_OPERATIONAL + || new_state == STATE_INIT + || new_state == STATE_SELFTEST || new_state == STATE_ERROR || new_state == STATE_FATALERROR) ok = 1; diff -up libgcrypt-1.8.3/src/global.c.fips-ctor libgcrypt-1.8.3/src/global.c --- libgcrypt-1.8.3/src/global.c.fips-ctor 2017-11-23 19:25:58.000000000 +0100 +++ libgcrypt-1.8.3/src/global.c 2018-07-17 19:15:43.933827112 +0200 @@ -141,6 +141,29 @@ global_init (void) } +#ifndef FIPS_MODULE_PATH +#define FIPS_MODULE_PATH "/etc/system-fips" +#endif + +void __attribute__ ((constructor)) _gcry_global_constructor (void) +{ + int rv; + + /* We always need the FSM lock to be functional. */ + _gcry_initialize_fsm_lock (); + + rv = access (FIPS_MODULE_PATH, F_OK); + if (rv < 0 && errno != ENOENT) + rv = 0; + + if (!rv) + { + /* We run the integrity check at this point. The remaining + selftests are run before use of the library by application. */ + _gcry_fips_run_selftests (0); + } +} + /* This function is called by the macro fips_is_operational and makes sure that the minimal initialization has been done. This is far from a perfect solution and hides problems with an improper @@ -671,8 +694,7 @@ _gcry_vcontrol (enum gcry_ctl_cmds cmd, case GCRYCTL_FIPS_MODE_P: if (fips_mode () - && !_gcry_is_fips_mode_inactive () - && !no_secure_memory) + && !_gcry_is_fips_mode_inactive ()) rc = GPG_ERR_GENERAL; /* Used as TRUE value */ break; @@ -749,9 +771,9 @@ _gcry_vcontrol (enum gcry_ctl_cmds cmd, break; case GCRYCTL_SET_ENFORCED_FIPS_FLAG: - if (!any_init_done) + if (fips_mode ()) { - /* Not yet initialized at all. Set the enforced fips mode flag */ + /* We are in FIPS mode, we can set the enforced fips mode flag. */ _gcry_set_preferred_rng_type (0); _gcry_set_enforced_fips_mode (); } diff -up libgcrypt-1.8.3/src/g10lib.h.fips-ctor libgcrypt-1.8.3/src/g10lib.h --- libgcrypt-1.8.3/src/g10lib.h.fips-ctor 2017-11-23 19:16:58.000000000 +0100 +++ libgcrypt-1.8.3/src/g10lib.h 2018-07-12 13:24:54.089403030 +0200 @@ -422,6 +422,8 @@ gpg_err_code_t _gcry_sexp_vextract_param /*-- fips.c --*/ +void _gcry_initialize_fsm_lock (void); + void _gcry_initialize_fips_mode (int force); int _gcry_fips_mode (void);
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