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412876a99c
openssl/SOURCES/openssl-1.1.1-fips-post-rand.patch
CentOS Sources 412876a99c import openssl-1.1.1g-9.el8
2021-10-08 14:19:43 +00:00

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diff -up openssl-1.1.1e/crypto/fips/fips.c.fips-post-rand openssl-1.1.1e/crypto/fips/fips.c
--- openssl-1.1.1e/crypto/fips/fips.c.fips-post-rand 2020-03-17 18:06:16.822418854 +0100
+++ openssl-1.1.1e/crypto/fips/fips.c 2020-03-17 18:06:16.861418172 +0100
@@ -68,6 +68,7 @@
# include <openssl/fips.h>
# include "internal/thread_once.h"
+# include "crypto/rand.h"
# ifndef PATH_MAX
# define PATH_MAX 1024
@@ -76,6 +77,7 @@
static int fips_selftest_fail = 0;
static int fips_mode = 0;
static int fips_started = 0;
+static int fips_post = 0;
static int fips_is_owning_thread(void);
static int fips_set_owning_thread(void);
@@ -158,6 +160,11 @@ void fips_set_selftest_fail(void)
fips_selftest_fail = 1;
}
+int fips_in_post(void)
+{
+ return fips_post;
+}
+
/* we implement what libfipscheck does ourselves */
static int
@@ -445,6 +452,8 @@ int FIPS_module_mode_set(int onoff)
}
# endif
+ fips_post = 1;
+
if (!FIPS_selftest()) {
fips_selftest_fail = 1;
ret = 0;
@@ -459,7 +468,12 @@ int FIPS_module_mode_set(int onoff)
goto end;
}
+ fips_post = 0;
+
fips_set_mode(onoff);
+ /* force RNG reseed with entropy from getrandom() on next call */
+ rand_force_reseed();
+
ret = 1;
goto end;
}
diff -up openssl-1.1.1e/crypto/rand/drbg_lib.c.fips-post-rand openssl-1.1.1e/crypto/rand/drbg_lib.c
--- openssl-1.1.1e/crypto/rand/drbg_lib.c.fips-post-rand 2020-03-17 15:31:17.000000000 +0100
+++ openssl-1.1.1e/crypto/rand/drbg_lib.c 2020-03-17 18:07:35.305045521 +0100
@@ -1009,6 +1009,20 @@ size_t rand_drbg_seedlen(RAND_DRBG *drbg
return min_entropy > min_entropylen ? min_entropy : min_entropylen;
}
+void rand_force_reseed(void)
+{
+ RAND_DRBG *drbg;
+
+ drbg = RAND_DRBG_get0_master();
+ drbg->fork_id = 0;
+
+ drbg = RAND_DRBG_get0_private();
+ drbg->fork_id = 0;
+
+ drbg = RAND_DRBG_get0_public();
+ drbg->fork_id = 0;
+}
+
/* Implements the default OpenSSL RAND_add() method */
static int drbg_add(const void *buf, int num, double randomness)
{
diff -up openssl-1.1.1e/crypto/rand/rand_unix.c.fips-post-rand openssl-1.1.1e/crypto/rand/rand_unix.c
--- openssl-1.1.1e/crypto/rand/rand_unix.c.fips-post-rand 2020-03-17 15:31:17.000000000 +0100
+++ openssl-1.1.1e/crypto/rand/rand_unix.c 2020-03-17 18:09:01.503537189 +0100
@@ -17,10 +17,12 @@
#include <openssl/crypto.h>
#include "rand_local.h"
#include "crypto/rand.h"
+#include "crypto/fips.h"
#include <stdio.h>
#include "internal/dso.h"
#ifdef __linux
# include <sys/syscall.h>
+# include <sys/random.h>
# ifdef DEVRANDOM_WAIT
# include <sys/shm.h>
# include <sys/utsname.h>
@@ -342,7 +344,7 @@ static ssize_t sysctl_random(char *buf,
* syscall_random(): Try to get random data using a system call
* returns the number of bytes returned in buf, or < 0 on error.
*/
-static ssize_t syscall_random(void *buf, size_t buflen)
+static ssize_t syscall_random(void *buf, size_t buflen, int nonblock)
{
/*
* Note: 'buflen' equals the size of the buffer which is used by the
@@ -364,6 +366,7 @@ static ssize_t syscall_random(void *buf,
* - Linux since 3.17 with glibc 2.25
* - FreeBSD since 12.0 (1200061)
*/
+# if 0
# if defined(__GNUC__) && __GNUC__>=2 && defined(__ELF__) && !defined(__hpux)
extern int getentropy(void *buffer, size_t length) __attribute__((weak));
@@ -385,10 +388,10 @@ static ssize_t syscall_random(void *buf,
if (p_getentropy.p != NULL)
return p_getentropy.f(buf, buflen) == 0 ? (ssize_t)buflen : -1;
# endif
-
+# endif
/* Linux supports this since version 3.17 */
-# if defined(__linux) && defined(__NR_getrandom)
- return syscall(__NR_getrandom, buf, buflen, 0);
+# if defined(__linux) && defined(SYS_getrandom)
+ return syscall(SYS_getrandom, buf, buflen, nonblock?GRND_NONBLOCK:0);
# elif (defined(__FreeBSD__) || defined(__NetBSD__)) && defined(KERN_ARND)
return sysctl_random(buf, buflen);
# else
@@ -623,6 +626,9 @@ size_t rand_pool_acquire_entropy(RAND_PO
size_t entropy_available;
# if defined(OPENSSL_RAND_SEED_GETRANDOM)
+ int in_post;
+
+ for (in_post = fips_in_post(); in_post >= 0; --in_post) {
{
size_t bytes_needed;
unsigned char *buffer;
@@ -633,7 +639,7 @@ size_t rand_pool_acquire_entropy(RAND_PO
bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
while (bytes_needed != 0 && attempts-- > 0) {
buffer = rand_pool_add_begin(pool, bytes_needed);
- bytes = syscall_random(buffer, bytes_needed);
+ bytes = syscall_random(buffer, bytes_needed, in_post);
if (bytes > 0) {
rand_pool_add_end(pool, bytes, 8 * bytes);
bytes_needed -= bytes;
@@ -668,8 +674,10 @@ size_t rand_pool_acquire_entropy(RAND_PO
int attempts = 3;
const int fd = get_random_device(i);
- if (fd == -1)
+ if (fd == -1) {
+ OPENSSL_showfatal("Random device %s cannot be opened.\n", random_device_paths[i]);
continue;
+ }
while (bytes_needed != 0 && attempts-- > 0) {
buffer = rand_pool_add_begin(pool, bytes_needed);
@@ -732,7 +740,9 @@ size_t rand_pool_acquire_entropy(RAND_PO
return entropy_available;
}
# endif
-
+# ifdef OPENSSL_RAND_SEED_GETRANDOM
+ }
+# endif
return rand_pool_entropy_available(pool);
# endif
}
diff -up openssl-1.1.1e/include/crypto/fips.h.fips-post-rand openssl-1.1.1e/include/crypto/fips.h
--- openssl-1.1.1e/include/crypto/fips.h.fips-post-rand 2020-03-17 18:06:16.831418696 +0100
+++ openssl-1.1.1e/include/crypto/fips.h 2020-03-17 18:06:16.861418172 +0100
@@ -77,6 +77,8 @@ int FIPS_selftest_hmac(void);
int FIPS_selftest_drbg(void);
int FIPS_selftest_cmac(void);
+int fips_in_post(void);
+
int fips_pkey_signature_test(EVP_PKEY *pkey,
const unsigned char *tbs, int tbslen,
const unsigned char *kat,
diff -up openssl-1.1.1e/include/crypto/rand.h.fips-post-rand openssl-1.1.1e/include/crypto/rand.h
--- openssl-1.1.1e/include/crypto/rand.h.fips-post-rand 2020-03-17 15:31:17.000000000 +0100
+++ openssl-1.1.1e/include/crypto/rand.h 2020-03-17 18:07:35.303045555 +0100
@@ -24,6 +24,7 @@
typedef struct rand_pool_st RAND_POOL;
void rand_cleanup_int(void);
+void rand_force_reseed(void);
void rand_drbg_cleanup_int(void);
void drbg_delete_thread_state(void);
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