Use vxRandLib for VxWorks7

Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/8023)

apps/rsautl.c

@@ -31,7 +31,7 @@ NON_EMPTY_TRANSLATION_UNIT
 typedef enum OPTION_choice {
     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
     OPT_ENGINE, OPT_IN, OPT_OUT, OPT_ASN1PARSE, OPT_HEXDUMP,
-    OPT_RAW, OPT_OAEP, OPT_SSL, OPT_PKCS, OPT_X931,
+    OPT_RSA_RAW, OPT_OAEP, OPT_SSL, OPT_PKCS, OPT_X931,
     OPT_SIGN, OPT_VERIFY, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
     OPT_PUBIN, OPT_CERTIN, OPT_INKEY, OPT_PASSIN, OPT_KEYFORM,
     OPT_R_ENUM
@@ -46,7 +46,7 @@ const OPTIONS rsautl_options[] = {
     {"pubin", OPT_PUBIN, '-', "Input is an RSA public"},
     {"certin", OPT_CERTIN, '-', "Input is a cert carrying an RSA public key"},
     {"ssl", OPT_SSL, '-', "Use SSL v2 padding"},
-    {"raw", OPT_RAW, '-', "Use no padding"},
+    {"raw", OPT_RSA_RAW, '-', "Use no padding"},
     {"pkcs", OPT_PKCS, '-', "Use PKCS#1 v1.5 padding (default)"},
     {"oaep", OPT_OAEP, '-', "Use PKCS#1 OAEP"},
     {"sign", OPT_SIGN, '-', "Sign with private key"},
@@ -112,7 +112,7 @@ int rsautl_main(int argc, char **argv)
         case OPT_HEXDUMP:
             hexdump = 1;
             break;
-        case OPT_RAW:
+        case OPT_RSA_RAW:
             pad = RSA_NO_PADDING;
             break;
         case OPT_OAEP:

crypto/mem_sec.c

@@ -33,8 +33,8 @@
 #   include <linux/mman.h>
 #   include <errno.h>
 #  endif
+#  include <sys/param.h>
 # endif
-# include <sys/param.h>
 # include <sys/stat.h>
 # include <fcntl.h>
 #endif

crypto/rand/build.info

@@ -1,6 +1,5 @@
 LIBS=../../libcrypto
 SOURCE[../../libcrypto]=\
         randfile.c rand_lib.c rand_err.c rand_crng_test.c rand_egd.c \
-        rand_win.c rand_unix.c rand_vms.c drbg_lib.c drbg_ctr.c \
+        rand_win.c rand_unix.c rand_vms.c drbg_lib.c drbg_ctr.c rand_vxworks.c \
         drbg_hash.c drbg_hmac.c
-

crypto/rand/rand_unix.c

@@ -30,7 +30,8 @@
 # include <sys/param.h>
 #endif
 
-#if defined(OPENSSL_SYS_UNIX) || defined(__DJGPP__)
+#if (defined(OPENSSL_SYS_UNIX) && !defined(OPENSSL_SYS_VXWORKS)) \
+     || defined(__DJGPP__)
 # include <sys/types.h>
 # include <sys/stat.h>
 # include <fcntl.h>
@@ -88,30 +89,8 @@ static uint64_t get_timer_bits(void);
 # undef OPENSSL_RAND_SEED_EGD
 #endif
 
-#if (defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI)) && \
-        !defined(OPENSSL_RAND_SEED_NONE)
-# error "UEFI and VXWorks only support seeding NONE"
-#endif
-
-#if defined(OPENSSL_SYS_VXWORKS)
-/* empty implementation */
-int rand_pool_init(void)
-{
-    return 1;
-}
-
-void rand_pool_cleanup(void)
-{
-}
-
-void rand_pool_keep_random_devices_open(int keep)
-{
-}
-
-size_t rand_pool_acquire_entropy(RAND_POOL *pool)
-{
-    return rand_pool_entropy_available(pool);
-}
+#if defined(OPENSSL_SYS_UEFI) && !defined(OPENSSL_RAND_SEED_NONE)
+# error "UEFI only supports seeding NONE"
 #endif
 
 #if !(defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) \
@@ -608,7 +587,8 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
 # endif
 #endif
 
-#if defined(OPENSSL_SYS_UNIX) || defined(__DJGPP__)
+#if (defined(OPENSSL_SYS_UNIX) && !defined(OPENSSL_SYS_VXWORKS)) \
+     || defined(__DJGPP__)
 int rand_pool_add_nonce_data(RAND_POOL *pool)
 {
     struct {

crypto/rand/rand_vxworks.c

@@ -0,0 +1,171 @@
+/*
+ * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/opensslconf.h>
+
+#ifndef OPENSSL_SYS_VXWORKS
+NON_EMPTY_TRANSLATION_UNIT
+#else
+# include <openssl/rand.h>
+# include "rand_lcl.h"
+# include "internal/rand_int.h"
+# include "internal/cryptlib.h"
+# include <version.h>
+# include <taskLib.h>
+
+# if defined(OPENSSL_RAND_SEED_NONE)
+/* none means none */
+#  undef OPENSSL_RAND_SEED_OS
+# endif
+
+# if defined(OPENSSL_RAND_SEED_OS)
+#  if _WRS_VXWORKS_MAJOR >= 7
+#    define RAND_SEED_VXRANDLIB
+#  else
+#    error "VxWorks <7 only support RAND_SEED_NONE"
+#  endif
+# endif
+
+# if defined(RAND_SEED_VXRANDLIB)
+#  include <randomNumGen.h>
+# endif
+
+/* Macro to convert two thirty two bit values into a sixty four bit one */
+# define TWO32TO64(a, b) ((((uint64_t)(a)) << 32) + (b))
+
+static uint64_t get_time_stamp(void)
+{
+    struct timespec ts;
+
+    if (clock_gettime(CLOCK_REALTIME, &ts) == 0)
+        return TWO32TO64(ts.tv_sec, ts.tv_nsec);
+    return time(NULL);
+}
+
+static uint64_t get_timer_bits(void)
+{
+    uint64_t res = OPENSSL_rdtsc();
+    struct timespec ts;
+
+    if (res != 0)
+        return res;
+
+    if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
+        return TWO32TO64(ts.tv_sec, ts.tv_nsec);
+    return time(NULL);
+}
+
+/*
+ * empty implementation
+ * vxworks does not need to init/cleanup or keep open the random lib
+ */
+int rand_pool_init(void)
+{
+    return 1;
+}
+
+void rand_pool_cleanup(void)
+{
+}
+
+void rand_pool_keep_random_devices_open(int keep)
+{
+}
+
+int rand_pool_add_additional_data(RAND_POOL *pool)
+{
+    struct {
+        CRYPTO_THREAD_ID tid;
+        uint64_t time;
+    } data;
+
+    memset(&data, 0, sizeof(data));
+
+    /*
+     * Add some noise from the thread id and a high resolution timer.
+     * The thread id adds a little randomness if the drbg is accessed
+     * concurrently (which is the case for the <master> drbg).
+     */
+    data.tid = CRYPTO_THREAD_get_current_id();
+    data.time = get_timer_bits();
+
+    return rand_pool_add(pool, (unsigned char *)&data, sizeof(data), 0);
+}
+
+int rand_pool_add_nonce_data(RAND_POOL *pool)
+{
+    struct {
+        pid_t pid;
+        CRYPTO_THREAD_ID tid;
+        uint64_t time;
+    } data;
+
+    memset(&data, 0, sizeof(data));
+
+    /*
+     * Add process id, thread id, and a high resolution timestamp to
+     * ensure that the nonce is unique with high probability for
+     * different process instances.
+     */
+    data.pid = getpid();
+    data.tid = CRYPTO_THREAD_get_current_id();
+    data.time = get_time_stamp();
+
+    return rand_pool_add(pool, (unsigned char *)&data, sizeof(data), 0);
+}
+
+size_t rand_pool_acquire_entropy(RAND_POOL *pool)
+{
+# if defined(RAND_SEED_VXRANDLIB)
+    /* vxRandLib based entropy method */
+    size_t bytes_needed;
+
+    bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
+    if (bytes_needed > 0)
+    {
+        int retryCount = 0;
+        STATUS result = ERROR;
+        unsigned char *buffer;
+
+        buffer = rand_pool_add_begin(pool, bytes_needed);
+        while ((result != OK) && (retryCount < 10)) {
+            RANDOM_NUM_GEN_STATUS status = randStatus();
+
+            if ((status == RANDOM_NUM_GEN_ENOUGH_ENTROPY)
+                    || (status == RANDOM_NUM_GEN_MAX_ENTROPY) ) {
+                result = randBytes(buffer, bytes_needed);
+                if (result == OK)
+                    rand_pool_add_end(pool, bytes_needed, 8 * bytes_needed);
+                /*
+                 * no else here: randStatus said ok, if randBytes failed
+                 * it will result in another loop or no entropy
+                 */
+            } else {
+                /*
+                 * give a minimum delay here to allow OS to collect more
+                 * entropy. taskDelay duration will depend on the system tick,
+                 * this is by design as the sw-random lib uses interrupts
+                 * which will at least happen during ticks
+                 */
+                taskDelay(5);
+            }
+            retryCount++;
+        }
+    }
+    return rand_pool_entropy_available(pool);
+# else
+    /*
+     * SEED_NONE means none, without randlib we dont have entropy and
+     * rely on it being added externally
+     */
+    return rand_pool_entropy_available(pool);
+# endif /* defined(RAND_SEED_VXRANDLIB) */
+}
+
+#endif /* OPENSSL_SYS_VXWORKS */

e_os.h

@@ -210,7 +210,7 @@ extern FILE *_imp___iob;
 # else                          /* The non-microsoft world */
 
 #  if defined(OPENSSL_SYS_VXWORKS)
-#   include <sys/times.h>
+#   include <time.h>
 #  else
 #   include <sys/time.h>
 #  endif