Removed wolfssl

1 files changed, 0 insertions, 2552 deletions

diff --git a/client/wolfssl/wolfcrypt/src/random.c b/client/wolfssl/wolfcrypt/src/random.c
deleted file mode 100644
index 53041d1..0000000
--- a/client/wolfssl/wolfcrypt/src/random.c
+++ /dev/null
@@ -1,2552 +0,0 @@
-/* random.c
- *
- * Copyright (C) 2006-2020 wolfSSL Inc.
- *
- * This file is part of wolfSSL.
- *
- * wolfSSL is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * wolfSSL is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
- */
-
-
-#ifdef HAVE_CONFIG_H
-    #include <config.h>
-#endif
-
-#include <wolfssl/wolfcrypt/settings.h>
-#include <wolfssl/wolfcrypt/error-crypt.h>
-
-/* on HPUX 11 you may need to install /dev/random see
-   http://h20293.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=KRNG11I
-
-*/
-
-#if defined(HAVE_FIPS) && \
-    defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
-
-    /* set NO_WRAPPERS before headers, use direct internal f()s not wrappers */
-    #define FIPS_NO_WRAPPERS
-
-    #ifdef USE_WINDOWS_API
-        #pragma code_seg(".fipsA$c")
-        #pragma const_seg(".fipsB$c")
-    #endif
-#endif
-
-
-#include <wolfssl/wolfcrypt/random.h>
-#include <wolfssl/wolfcrypt/cpuid.h>
-
-
-/* If building for old FIPS. */
-#if defined(HAVE_FIPS) && \
-    (!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION < 2))
-
-int wc_GenerateSeed(OS_Seed* os, byte* seed, word32 sz)
-{
-    return GenerateSeed(os, seed, sz);
-}
-
-int wc_InitRng_ex(WC_RNG* rng, void* heap, int devId)
-{
-    (void)heap;
-    (void)devId;
-    return InitRng_fips(rng);
-}
-
-int wc_InitRng(WC_RNG* rng)
-{
-    return InitRng_fips(rng);
-}
-
-
-int wc_RNG_GenerateBlock(WC_RNG* rng, byte* b, word32 sz)
-{
-    return RNG_GenerateBlock_fips(rng, b, sz);
-}
-
-
-int wc_RNG_GenerateByte(WC_RNG* rng, byte* b)
-{
-    return RNG_GenerateByte(rng, b);
-}
-
-#ifdef HAVE_HASHDRBG
-
-    int wc_FreeRng(WC_RNG* rng)
-    {
-        return FreeRng_fips(rng);
-    }
-
-    int wc_RNG_HealthTest(int reseed, const byte* seedA, word32 seedASz,
-                                      const byte* seedB, word32 seedBSz,
-                                      byte* output, word32 outputSz)
-    {
-        return RNG_HealthTest_fips(reseed, seedA, seedASz,
-                              seedB, seedBSz, output, outputSz);
-   }
-#endif /* HAVE_HASHDRBG */
-
-#else /* else build without fips, or for new fips */
-
-#ifndef WC_NO_RNG /* if not FIPS and RNG is disabled then do not compile */
-
-#include <wolfssl/wolfcrypt/sha256.h>
-
-#ifdef WOLF_CRYPTO_CB
-    #include <wolfssl/wolfcrypt/cryptocb.h>
-#endif
-
-#ifdef NO_INLINE
-    #include <wolfssl/wolfcrypt/misc.h>
-#else
-    #define WOLFSSL_MISC_INCLUDED
-    #include <wolfcrypt/src/misc.c>
-#endif
-
-#if defined(WOLFSSL_SGX)
-    #include <sgx_trts.h>
-#elif defined(USE_WINDOWS_API)
-    #ifndef _WIN32_WINNT
-        #define _WIN32_WINNT 0x0400
-    #endif
-    #include <windows.h>
-    #include <wincrypt.h>
-#elif defined(HAVE_WNR)
-    #include <wnr.h>
-    #include <wolfssl/wolfcrypt/logging.h>
-    wolfSSL_Mutex wnr_mutex;    /* global netRandom mutex */
-    int wnr_timeout     = 0;    /* entropy timeout, mililseconds */
-    int wnr_mutex_init  = 0;    /* flag for mutex init */
-    wnr_context*  wnr_ctx;      /* global netRandom context */
-#elif defined(FREESCALE_KSDK_2_0_TRNG)
-    #include "fsl_trng.h"
-#elif defined(FREESCALE_KSDK_2_0_RNGA)
-    #include "fsl_rnga.h"
-#elif defined(WOLFSSL_WICED)
-    #include "wiced_crypto.h"
-#elif defined(WOLFSSL_NETBURNER)
-    #include <predef.h>
-    #include <basictypes.h>
-    #include <random.h>
-#elif defined(NO_DEV_RANDOM)
-#elif defined(CUSTOM_RAND_GENERATE)
-#elif defined(CUSTOM_RAND_GENERATE_BLOCK)
-#elif defined(CUSTOM_RAND_GENERATE_SEED)
-#elif defined(WOLFSSL_GENSEED_FORTEST)
-#elif defined(WOLFSSL_MDK_ARM)
-#elif defined(WOLFSSL_IAR_ARM)
-#elif defined(WOLFSSL_ROWLEY_ARM)
-#elif defined(WOLFSSL_EMBOS)
-#elif defined(WOLFSSL_DEOS)
-#elif defined(MICRIUM)
-#elif defined(WOLFSSL_NUCLEUS)
-#elif defined(WOLFSSL_PB)
-#elif defined(WOLFSSL_ZEPHYR)
-#elif defined(WOLFSSL_TELIT_M2MB)
-#elif defined(WOLFSSL_SCE) && !defined(WOLFSSL_SCE_NO_TRNG)
-#else
-    /* include headers that may be needed to get good seed */
-    #include <fcntl.h>
-    #ifndef EBSNET
-        #include <unistd.h>
-    #endif
-#endif
-
-
-#if defined(HAVE_INTEL_RDRAND) || defined(HAVE_INTEL_RDSEED)
-    static word32 intel_flags = 0;
-    static void wc_InitRng_IntelRD(void)
-    {
-        intel_flags = cpuid_get_flags();
-    }
-    #ifdef HAVE_INTEL_RDSEED
-    static int wc_GenerateSeed_IntelRD(OS_Seed* os, byte* output, word32 sz);
-    #endif
-    #ifdef HAVE_INTEL_RDRAND
-    static int wc_GenerateRand_IntelRD(OS_Seed* os, byte* output, word32 sz);
-    #endif
-
-#ifdef USE_WINDOWS_API
-    #include <immintrin.h>
-#endif /* USE_WINDOWS_API */
-#endif
-
-/* Start NIST DRBG code */
-#ifdef HAVE_HASHDRBG
-
-#define OUTPUT_BLOCK_LEN  (WC_SHA256_DIGEST_SIZE)
-#define MAX_REQUEST_LEN   (0x10000)
-#define RESEED_INTERVAL   WC_RESEED_INTERVAL
-
-
-/* For FIPS builds, the user should not be adjusting the values. */
-#if defined(HAVE_FIPS) && \
-    defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
-    #if defined(RNG_SECURITY_STRENGTH) \
-            || defined(ENTROPY_SCALE_FACTOR) \
-            || defined(SEED_BLOCK_SZ)
-
-        #error "Do not change the RNG parameters for FIPS builds."
-    #endif
-#endif
-
-
-/* The security strength for the RNG is the target number of bits of
- * entropy you are looking for in a seed. */
-#ifndef RNG_SECURITY_STRENGTH
-    #if defined(HAVE_FIPS) && \
-        defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
-        /* SHA-256 requires a minimum of 256-bits of entropy. The goal
-         * of 1024 will provide 4 times that. */
-        #define RNG_SECURITY_STRENGTH (1024)
-    #else
-        /* If not using FIPS or using old FIPS, set the number down a bit.
-         * More is better, but more is also slower. */
-        #define RNG_SECURITY_STRENGTH (256)
-    #endif
-#endif
-
-#ifndef ENTROPY_SCALE_FACTOR
-    /* The entropy scale factor should be the whole number inverse of the
-     * minimum bits of entropy per bit of NDRNG output. */
-    #if defined(HAVE_INTEL_RDSEED) || defined(HAVE_INTEL_RDRAND)
-        /* The value of 2 applies to Intel's RDSEED which provides about
-         * 0.5 bits minimum of entropy per bit. */
-        #define ENTROPY_SCALE_FACTOR 2
-    #else
-        /* Setting the default to 1. */
-        #define ENTROPY_SCALE_FACTOR 1
-    #endif
-#endif
-
-#ifndef SEED_BLOCK_SZ
-    /* The seed block size, is the size of the output of the underlying NDRNG.
-     * This value is used for testing the output of the NDRNG. */
-    #if defined(HAVE_INTEL_RDSEED) || defined(HAVE_INTEL_RDRAND)
-        /* RDSEED outputs in blocks of 64-bits. */
-        #define SEED_BLOCK_SZ sizeof(word64)
-    #else
-        /* Setting the default to 4. */
-        #define SEED_BLOCK_SZ 4
-    #endif
-#endif
-
-#define SEED_SZ        (RNG_SECURITY_STRENGTH*ENTROPY_SCALE_FACTOR/8)
-
-/* The maximum seed size will be the seed size plus a seed block for the
- * test, and an additional half of the seed size. This additional half
- * is in case the user does not supply a nonce. A nonce will be obtained
- * from the NDRNG. */
-#define MAX_SEED_SZ    (SEED_SZ + SEED_SZ/2 + SEED_BLOCK_SZ)
-
-
-/* Internal return codes */
-#define DRBG_SUCCESS      0
-#define DRBG_FAILURE      1
-#define DRBG_NEED_RESEED  2
-#define DRBG_CONT_FAILURE 3
-
-/* RNG health states */
-#define DRBG_NOT_INIT     0
-#define DRBG_OK           1
-#define DRBG_FAILED       2
-#define DRBG_CONT_FAILED  3
-
-#define RNG_HEALTH_TEST_CHECK_SIZE (WC_SHA256_DIGEST_SIZE * 4)
-
-/* Verify max gen block len */
-#if RNG_MAX_BLOCK_LEN > MAX_REQUEST_LEN
-    #error RNG_MAX_BLOCK_LEN is larger than NIST DBRG max request length
-#endif
-
-enum {
-    drbgInitC     = 0,
-    drbgReseed    = 1,
-    drbgGenerateW = 2,
-    drbgGenerateH = 3,
-    drbgInitV
-};
-
-/* NOTE: if DRBG struct is changed please update random.h drbg_data size */
-typedef struct DRBG {
-    word32 reseedCtr;
-    word32 lastBlock;
-    byte V[DRBG_SEED_LEN];
-    byte C[DRBG_SEED_LEN];
-#if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
-    void* heap;
-    int devId;
-#endif
-    byte   matchCount;
-#ifdef WOLFSSL_SMALL_STACK_CACHE
-    wc_Sha256 sha256;
-#endif
-} DRBG;
-
-
-static int wc_RNG_HealthTestLocal(int reseed);
-
-/* Hash Derivation Function */
-/* Returns: DRBG_SUCCESS or DRBG_FAILURE */
-static int Hash_df(DRBG* drbg, byte* out, word32 outSz, byte type,
-                                                  const byte* inA, word32 inASz,
-                                                  const byte* inB, word32 inBSz)
-{
-    int ret = DRBG_FAILURE;
-    byte ctr;
-    int i;
-    int len;
-    word32 bits = (outSz * 8); /* reverse byte order */
-#ifdef WOLFSSL_SMALL_STACK_CACHE
-    wc_Sha256* sha = &drbg->sha256;
-#else
-    wc_Sha256 sha[1];
-#endif
-#ifdef WC_ASYNC_ENABLE_SHA256
-    DECLARE_VAR(digest, byte, WC_SHA256_DIGEST_SIZE, drbg->heap);
-    if (digest == NULL)
-        return MEMORY_E;
-#else
-    byte digest[WC_SHA256_DIGEST_SIZE];
-#endif
-
-    (void)drbg;
-#ifdef WC_ASYNC_ENABLE_SHA256
-    if (digest == NULL)
-        return DRBG_FAILURE;
-#endif
-
-#ifdef LITTLE_ENDIAN_ORDER
-    bits = ByteReverseWord32(bits);
-#endif
-    len = (outSz / OUTPUT_BLOCK_LEN)
-        + ((outSz % OUTPUT_BLOCK_LEN) ? 1 : 0);
-
-    for (i = 0, ctr = 1; i < len; i++, ctr++) {
-#ifndef WOLFSSL_SMALL_STACK_CACHE
-    #if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
-        ret = wc_InitSha256_ex(sha, drbg->heap, drbg->devId);
-    #else
-        ret = wc_InitSha256(sha);
-    #endif
-        if (ret != 0)
-            break;
-
-        if (ret == 0)
-#endif
-            ret = wc_Sha256Update(sha, &ctr, sizeof(ctr));
-        if (ret == 0)
-            ret = wc_Sha256Update(sha, (byte*)&bits, sizeof(bits));
-
-        if (ret == 0) {
-            /* churning V is the only string that doesn't have the type added */
-            if (type != drbgInitV)
-                ret = wc_Sha256Update(sha, &type, sizeof(type));
-        }
-        if (ret == 0)
-            ret = wc_Sha256Update(sha, inA, inASz);
-        if (ret == 0) {
-            if (inB != NULL && inBSz > 0)
-                ret = wc_Sha256Update(sha, inB, inBSz);
-        }
-        if (ret == 0)
-            ret = wc_Sha256Final(sha, digest);
-
-#ifndef WOLFSSL_SMALL_STACK_CACHE
-        wc_Sha256Free(sha);
-#endif
-        if (ret == 0) {
-            if (outSz > OUTPUT_BLOCK_LEN) {
-                XMEMCPY(out, digest, OUTPUT_BLOCK_LEN);
-                outSz -= OUTPUT_BLOCK_LEN;
-                out += OUTPUT_BLOCK_LEN;
-            }
-            else {
-                XMEMCPY(out, digest, outSz);
-            }
-        }
-    }
-
-    ForceZero(digest, WC_SHA256_DIGEST_SIZE);
-
-#ifdef WC_ASYNC_ENABLE_SHA256
-    FREE_VAR(digest, drbg->heap);
-#endif
-
-    return (ret == 0) ? DRBG_SUCCESS : DRBG_FAILURE;
-}
-
-/* Returns: DRBG_SUCCESS or DRBG_FAILURE */
-static int Hash_DRBG_Reseed(DRBG* drbg, const byte* seed, word32 seedSz)
-{
-    byte newV[DRBG_SEED_LEN];
-
-    XMEMSET(newV, 0, DRBG_SEED_LEN);
-
-    if (Hash_df(drbg, newV, sizeof(newV), drbgReseed,
-                drbg->V, sizeof(drbg->V), seed, seedSz) != DRBG_SUCCESS) {
-        return DRBG_FAILURE;
-    }
-
-    XMEMCPY(drbg->V, newV, sizeof(drbg->V));
-    ForceZero(newV, sizeof(newV));
-
-    if (Hash_df(drbg, drbg->C, sizeof(drbg->C), drbgInitC, drbg->V,
-                                    sizeof(drbg->V), NULL, 0) != DRBG_SUCCESS) {
-        return DRBG_FAILURE;
-    }
-
-    drbg->reseedCtr = 1;
-    drbg->lastBlock = 0;
-    drbg->matchCount = 0;
-    return DRBG_SUCCESS;
-}
-
-/* Returns: DRBG_SUCCESS and DRBG_FAILURE or BAD_FUNC_ARG on fail */
-int wc_RNG_DRBG_Reseed(WC_RNG* rng, const byte* seed, word32 seedSz)
-{
-    if (rng == NULL || seed == NULL) {
-        return BAD_FUNC_ARG;
-    }
-
-    return Hash_DRBG_Reseed(rng->drbg, seed, seedSz);
-}
-
-static WC_INLINE void array_add_one(byte* data, word32 dataSz)
-{
-    int i;
-
-    for (i = dataSz - 1; i >= 0; i--)
-    {
-        data[i]++;
-        if (data[i] != 0) break;
-    }
-}
-
-/* Returns: DRBG_SUCCESS or DRBG_FAILURE */
-static int Hash_gen(DRBG* drbg, byte* out, word32 outSz, const byte* V)
-{
-    int ret = DRBG_FAILURE;
-    byte data[DRBG_SEED_LEN];
-    int i;
-    int len;
-    word32 checkBlock;
-#ifdef WOLFSSL_SMALL_STACK_CACHE
-    wc_Sha256* sha = &drbg->sha256;
-#else
-    wc_Sha256 sha[1];
-#endif
-#ifdef WC_ASYNC_ENABLE_SHA256
-    DECLARE_VAR(digest, byte, WC_SHA256_DIGEST_SIZE, drbg->heap);
-    if (digest == NULL)
-        return MEMORY_E;
-#else
-    byte digest[WC_SHA256_DIGEST_SIZE];
-#endif
-
-    /* Special case: outSz is 0 and out is NULL. wc_Generate a block to save for
-     * the continuous test. */
-
-    if (outSz == 0) outSz = 1;
-
-    len = (outSz / OUTPUT_BLOCK_LEN) + ((outSz % OUTPUT_BLOCK_LEN) ? 1 : 0);
-
-    XMEMCPY(data, V, sizeof(data));
-    for (i = 0; i < len; i++) {
-#ifndef WOLFSSL_SMALL_STACK_CACHE
-    #if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
-        ret = wc_InitSha256_ex(sha, drbg->heap, drbg->devId);
-    #else
-        ret = wc_InitSha256(sha);
-    #endif
-        if (ret == 0)
-#endif
-            ret = wc_Sha256Update(sha, data, sizeof(data));
-        if (ret == 0)
-            ret = wc_Sha256Final(sha, digest);
-#ifndef WOLFSSL_SMALL_STACK_CACHE
-        wc_Sha256Free(sha);
-#endif
-
-        if (ret == 0) {
-            XMEMCPY(&checkBlock, digest, sizeof(word32));
-            if (drbg->reseedCtr > 1 && checkBlock == drbg->lastBlock) {
-                if (drbg->matchCount == 1) {
-                    return DRBG_CONT_FAILURE;
-                }
-                else {
-                    if (i == len) {
-                        len++;
-                    }
-                    drbg->matchCount = 1;
-                }
-            }
-            else {
-                drbg->matchCount = 0;
-                drbg->lastBlock = checkBlock;
-            }
-
-            if (out != NULL && outSz != 0) {
-                if (outSz >= OUTPUT_BLOCK_LEN) {
-                    XMEMCPY(out, digest, OUTPUT_BLOCK_LEN);
-                    outSz -= OUTPUT_BLOCK_LEN;
-                    out += OUTPUT_BLOCK_LEN;
-                    array_add_one(data, DRBG_SEED_LEN);
-                }
-                else {
-                    XMEMCPY(out, digest, outSz);
-                    outSz = 0;
-                }
-            }
-        }
-    }
-    ForceZero(data, sizeof(data));
-
-#ifdef WC_ASYNC_ENABLE_SHA256
-    FREE_VAR(digest, drbg->heap);
-#endif
-
-    return (ret == 0) ? DRBG_SUCCESS : DRBG_FAILURE;
-}
-
-static WC_INLINE void array_add(byte* d, word32 dLen, const byte* s, word32 sLen)
-{
-    word16 carry = 0;
-
-    if (dLen > 0 && sLen > 0 && dLen >= sLen) {
-        int sIdx, dIdx;
-
-        for (sIdx = sLen - 1, dIdx = dLen - 1; sIdx >= 0; dIdx--, sIdx--)
-        {
-            carry += d[dIdx] + s[sIdx];
-            d[dIdx] = (byte)carry;
-            carry >>= 8;
-        }
-
-        for (; carry != 0 && dIdx >= 0; dIdx--) {
-            carry += d[dIdx];
-            d[dIdx] = (byte)carry;
-            carry >>= 8;
-        }
-    }
-}
-
-/* Returns: DRBG_SUCCESS, DRBG_NEED_RESEED, or DRBG_FAILURE */
-static int Hash_DRBG_Generate(DRBG* drbg, byte* out, word32 outSz)
-{
-    int ret;
-#ifdef WOLFSSL_SMALL_STACK_CACHE
-    wc_Sha256* sha = &drbg->sha256;
-#else
-    wc_Sha256 sha[1];
-#endif
-    byte type;
-    word32 reseedCtr;
-
-    if (drbg->reseedCtr == RESEED_INTERVAL) {
-        return DRBG_NEED_RESEED;
-    } else {
-    #ifdef WC_ASYNC_ENABLE_SHA256
-        DECLARE_VAR(digest, byte, WC_SHA256_DIGEST_SIZE, drbg->heap);
-        if (digest == NULL)
-            return MEMORY_E;
-    #else
-        byte digest[WC_SHA256_DIGEST_SIZE];
-    #endif
-        type = drbgGenerateH;
-        reseedCtr = drbg->reseedCtr;
-
-        ret = Hash_gen(drbg, out, outSz, drbg->V);
-        if (ret == DRBG_SUCCESS) {
-#ifndef WOLFSSL_SMALL_STACK_CACHE
-        #if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
-            ret = wc_InitSha256_ex(sha, drbg->heap, drbg->devId);
-        #else
-            ret = wc_InitSha256(sha);
-        #endif
-            if (ret == 0)
-#endif
-                ret = wc_Sha256Update(sha, &type, sizeof(type));
-            if (ret == 0)
-                ret = wc_Sha256Update(sha, drbg->V, sizeof(drbg->V));
-            if (ret == 0)
-                ret = wc_Sha256Final(sha, digest);
-
-#ifndef WOLFSSL_SMALL_STACK_CACHE
-            wc_Sha256Free(sha);
-#endif
-
-            if (ret == 0) {
-                array_add(drbg->V, sizeof(drbg->V), digest, WC_SHA256_DIGEST_SIZE);
-                array_add(drbg->V, sizeof(drbg->V), drbg->C, sizeof(drbg->C));
-            #ifdef LITTLE_ENDIAN_ORDER
-                reseedCtr = ByteReverseWord32(reseedCtr);
-            #endif
-                array_add(drbg->V, sizeof(drbg->V),
-                                          (byte*)&reseedCtr, sizeof(reseedCtr));
-                ret = DRBG_SUCCESS;
-            }
-            drbg->reseedCtr++;
-        }
-        ForceZero(digest, WC_SHA256_DIGEST_SIZE);
-    #ifdef WC_ASYNC_ENABLE_SHA256
-        FREE_VAR(digest, drbg->heap);
-    #endif
-    }
-
-    return (ret == 0) ? DRBG_SUCCESS : DRBG_FAILURE;
-}
-
-/* Returns: DRBG_SUCCESS or DRBG_FAILURE */
-static int Hash_DRBG_Instantiate(DRBG* drbg, const byte* seed, word32 seedSz,
-                                             const byte* nonce, word32 nonceSz,
-                                             void* heap, int devId)
-{
-    int ret;
-
-    XMEMSET(drbg, 0, sizeof(DRBG));
-#if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
-    drbg->heap = heap;
-    drbg->devId = devId;
-#else
-    (void)heap;
-    (void)devId;
-#endif
-
-#ifdef WOLFSSL_SMALL_STACK_CACHE
-    #if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
-        ret = wc_InitSha256_ex(&drbg->sha256, drbg->heap, drbg->devId);
-    #else
-        ret = wc_InitSha256(&drbg->sha256);
-    #endif
-    if (ret != 0)
-        return ret;
-#endif
-
-    if (Hash_df(drbg, drbg->V, sizeof(drbg->V), drbgInitV, seed, seedSz,
-                                              nonce, nonceSz) == DRBG_SUCCESS &&
-        Hash_df(drbg, drbg->C, sizeof(drbg->C), drbgInitC, drbg->V,
-                                    sizeof(drbg->V), NULL, 0) == DRBG_SUCCESS) {
-
-        drbg->reseedCtr = 1;
-        drbg->lastBlock = 0;
-        drbg->matchCount = 0;
-        ret = DRBG_SUCCESS;
-    }
-    else {
-        ret = DRBG_FAILURE;
-    }
-
-    return ret;
-}
-
-/* Returns: DRBG_SUCCESS or DRBG_FAILURE */
-static int Hash_DRBG_Uninstantiate(DRBG* drbg)
-{
-    word32 i;
-    int    compareSum = 0;
-    byte*  compareDrbg = (byte*)drbg;
-
-#ifdef WOLFSSL_SMALL_STACK_CACHE
-    wc_Sha256Free(&drbg->sha256);
-#endif
-
-    ForceZero(drbg, sizeof(DRBG));
-
-    for (i = 0; i < sizeof(DRBG); i++)
-        compareSum |= compareDrbg[i] ^ 0;
-
-    return (compareSum == 0) ? DRBG_SUCCESS : DRBG_FAILURE;
-}
-
-
-int wc_RNG_TestSeed(const byte* seed, word32 seedSz)
-{
-    int ret = DRBG_SUCCESS;
-
-    /* Check the seed for duplicate words. */
-    word32 seedIdx = 0;
-    word32 scratchSz = min(SEED_BLOCK_SZ, seedSz - SEED_BLOCK_SZ);
-
-    while (seedIdx < seedSz - SEED_BLOCK_SZ) {
-        if (ConstantCompare(seed + seedIdx,
-                            seed + seedIdx + scratchSz,
-                            scratchSz) == 0) {
-
-            ret = DRBG_CONT_FAILURE;
-        }
-        seedIdx += SEED_BLOCK_SZ;
-        scratchSz = min(SEED_BLOCK_SZ, (seedSz - seedIdx));
-    }
-
-    return ret;
-}
-#endif /* HAVE_HASHDRBG */
-/* End NIST DRBG Code */
-
-
-static int _InitRng(WC_RNG* rng, byte* nonce, word32 nonceSz,
-                    void* heap, int devId)
-{
-    int ret = RNG_FAILURE_E;
-#ifdef HAVE_HASHDRBG
-    word32 seedSz = SEED_SZ + SEED_BLOCK_SZ;
-#endif
-
-    (void)nonce;
-    (void)nonceSz;
-
-    if (rng == NULL)
-        return BAD_FUNC_ARG;
-    if (nonce == NULL && nonceSz != 0)
-        return BAD_FUNC_ARG;
-
-#ifdef WOLFSSL_HEAP_TEST
-    rng->heap = (void*)WOLFSSL_HEAP_TEST;
-    (void)heap;
-#else
-    rng->heap = heap;
-#endif
-#if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
-    rng->devId = devId;
-    #if defined(WOLF_CRYPTO_CB)
-        rng->seed.devId = devId;
-    #endif
-#else
-    (void)devId;
-#endif
-
-#ifdef HAVE_HASHDRBG
-    /* init the DBRG to known values */
-    rng->drbg = NULL;
-    rng->status = DRBG_NOT_INIT;
-#endif
-
-#if defined(HAVE_INTEL_RDSEED) || defined(HAVE_INTEL_RDRAND)
-    /* init the intel RD seed and/or rand */
-    wc_InitRng_IntelRD();
-#endif
-
-    /* configure async RNG source if available */
-#ifdef WOLFSSL_ASYNC_CRYPT
-    ret = wolfAsync_DevCtxInit(&rng->asyncDev, WOLFSSL_ASYNC_MARKER_RNG,
-                                                        rng->heap, rng->devId);
-    if (ret != 0)
-        return ret;
-#endif
-
-#ifdef HAVE_INTEL_RDRAND
-    /* if CPU supports RDRAND, use it directly and by-pass DRBG init */
-    if (IS_INTEL_RDRAND(intel_flags))
-        return 0;
-#endif
-
-#ifdef CUSTOM_RAND_GENERATE_BLOCK
-    ret = 0; /* success */
-#else
-#ifdef HAVE_HASHDRBG
-    if (nonceSz == 0)
-        seedSz = MAX_SEED_SZ;
-
-    if (wc_RNG_HealthTestLocal(0) == 0) {
-    #ifdef WC_ASYNC_ENABLE_SHA256
-        DECLARE_VAR(seed, byte, MAX_SEED_SZ, rng->heap);
-        if (seed == NULL)
-            return MEMORY_E;
-    #else
-        byte seed[MAX_SEED_SZ];
-    #endif
-
-#if !defined(WOLFSSL_NO_MALLOC) || defined(WOLFSSL_STATIC_MEMORY)
-        rng->drbg =
-                (struct DRBG*)XMALLOC(sizeof(DRBG), rng->heap,
-                                                          DYNAMIC_TYPE_RNG);
-#else
-        /* compile-time validation of drbg_data size */
-        typedef char drbg_data_test[sizeof(rng->drbg_data) >=
-                sizeof(struct DRBG) ? 1 : -1];
-        (void)sizeof(drbg_data_test);
-        rng->drbg = (struct DRBG*)rng->drbg_data;
-#endif
-
-        if (rng->drbg == NULL) {
-            ret = MEMORY_E;
-        }
-        else {
-            ret = wc_GenerateSeed(&rng->seed, seed, seedSz);
-            if (ret != 0)
-                ret = DRBG_FAILURE;
-            else
-                ret = wc_RNG_TestSeed(seed, seedSz);
-
-            if (ret == DRBG_SUCCESS)
-                 ret = Hash_DRBG_Instantiate(rng->drbg,
-                            seed + SEED_BLOCK_SZ, seedSz - SEED_BLOCK_SZ,
-                            nonce, nonceSz, rng->heap, devId);
-
-            if (ret != DRBG_SUCCESS) {
-            #if !defined(WOLFSSL_NO_MALLOC) || defined(WOLFSSL_STATIC_MEMORY)
-                XFREE(rng->drbg, rng->heap, DYNAMIC_TYPE_RNG);
-            #endif
-                rng->drbg = NULL;
-            }
-        }
-
-        ForceZero(seed, seedSz);
-    #ifdef WC_ASYNC_ENABLE_SHA256
-        FREE_VAR(seed, rng->heap);
-    #endif
-    }
-    else
-        ret = DRBG_CONT_FAILURE;
-
-    if (ret == DRBG_SUCCESS) {
-        rng->status = DRBG_OK;
-        ret = 0;
-    }
-    else if (ret == DRBG_CONT_FAILURE) {
-        rng->status = DRBG_CONT_FAILED;
-        ret = DRBG_CONT_FIPS_E;
-    }
-    else if (ret == DRBG_FAILURE) {
-        rng->status = DRBG_FAILED;
-        ret = RNG_FAILURE_E;
-    }
-    else {
-        rng->status = DRBG_FAILED;
-    }
-#endif /* HAVE_HASHDRBG */
-#endif /* CUSTOM_RAND_GENERATE_BLOCK */
-
-    return ret;
-}
-
-
-WOLFSSL_ABI
-WC_RNG* wc_rng_new(byte* nonce, word32 nonceSz, void* heap)
-{
-    WC_RNG* rng;
-
-    rng = (WC_RNG*)XMALLOC(sizeof(WC_RNG), heap, DYNAMIC_TYPE_RNG);
-    if (rng) {
-        int error = _InitRng(rng, nonce, nonceSz, heap, INVALID_DEVID) != 0;
-        if (error) {
-            XFREE(rng, heap, DYNAMIC_TYPE_RNG);
-            rng = NULL;
-        }
-    }
-
-    return rng;
-}
-
-
-WOLFSSL_ABI
-void wc_rng_free(WC_RNG* rng)
-{
-    if (rng) {
-        void* heap = rng->heap;
-
-        wc_FreeRng(rng);
-        ForceZero(rng, sizeof(WC_RNG));
-        XFREE(rng, heap, DYNAMIC_TYPE_RNG);
-        (void)heap;
-    }
-}
-
-
-int wc_InitRng(WC_RNG* rng)
-{
-    return _InitRng(rng, NULL, 0, NULL, INVALID_DEVID);
-}
-
-
-int wc_InitRng_ex(WC_RNG* rng, void* heap, int devId)
-{
-    return _InitRng(rng, NULL, 0, heap, devId);
-}
-
-
-int wc_InitRngNonce(WC_RNG* rng, byte* nonce, word32 nonceSz)
-{
-    return _InitRng(rng, nonce, nonceSz, NULL, INVALID_DEVID);
-}
-
-
-int wc_InitRngNonce_ex(WC_RNG* rng, byte* nonce, word32 nonceSz,
-                       void* heap, int devId)
-{
-    return _InitRng(rng, nonce, nonceSz, heap, devId);
-}
-
-
-/* place a generated block in output */
-WOLFSSL_ABI
-int wc_RNG_GenerateBlock(WC_RNG* rng, byte* output, word32 sz)
-{
-    int ret;
-
-    if (rng == NULL || output == NULL)
-        return BAD_FUNC_ARG;
-
-#ifdef WOLF_CRYPTO_CB
-    if (rng->devId != INVALID_DEVID) {
-        ret = wc_CryptoCb_RandomBlock(rng, output, sz);
-        if (ret != CRYPTOCB_UNAVAILABLE)
-            return ret;
-        /* fall-through when unavailable */
-    }
-#endif
-
-#ifdef HAVE_INTEL_RDRAND
-    if (IS_INTEL_RDRAND(intel_flags))
-        return wc_GenerateRand_IntelRD(NULL, output, sz);
-#endif
-
-#if defined(WOLFSSL_ASYNC_CRYPT)
-    if (rng->asyncDev.marker == WOLFSSL_ASYNC_MARKER_RNG) {
-        /* these are blocking */
-    #ifdef HAVE_CAVIUM
-        return NitroxRngGenerateBlock(rng, output, sz);
-    #elif defined(HAVE_INTEL_QA) && defined(QAT_ENABLE_RNG)
-        return IntelQaDrbg(&rng->asyncDev, output, sz);
-    #else
-        /* simulator not supported */
-    #endif
-    }
-#endif
-
-#ifdef CUSTOM_RAND_GENERATE_BLOCK
-    XMEMSET(output, 0, sz);
-    ret = CUSTOM_RAND_GENERATE_BLOCK(output, sz);
-#else
-
-#ifdef HAVE_HASHDRBG
-    if (sz > RNG_MAX_BLOCK_LEN)
-        return BAD_FUNC_ARG;
-
-    if (rng->status != DRBG_OK)
-        return RNG_FAILURE_E;
-
-    ret = Hash_DRBG_Generate(rng->drbg, output, sz);
-    if (ret == DRBG_NEED_RESEED) {
-        if (wc_RNG_HealthTestLocal(1) == 0) {
-            byte newSeed[SEED_SZ + SEED_BLOCK_SZ];
-
-            ret = wc_GenerateSeed(&rng->seed, newSeed,
-                                  SEED_SZ + SEED_BLOCK_SZ);
-            if (ret != 0)
-                ret = DRBG_FAILURE;
-            else
-                ret = wc_RNG_TestSeed(newSeed, SEED_SZ + SEED_BLOCK_SZ);
-
-            if (ret == DRBG_SUCCESS)
-                ret = Hash_DRBG_Reseed(rng->drbg, newSeed + SEED_BLOCK_SZ,
-                                       SEED_SZ);
-            if (ret == DRBG_SUCCESS)
-                ret = Hash_DRBG_Generate(rng->drbg, output, sz);
-
-            ForceZero(newSeed, sizeof(newSeed));
-        }
-        else
-            ret = DRBG_CONT_FAILURE;
-    }
-
-    if (ret == DRBG_SUCCESS) {
-        ret = 0;
-    }
-    else if (ret == DRBG_CONT_FAILURE) {
-        ret = DRBG_CONT_FIPS_E;
-        rng->status = DRBG_CONT_FAILED;
-    }
-    else {
-        ret = RNG_FAILURE_E;
-        rng->status = DRBG_FAILED;
-    }
-#else
-
-    /* if we get here then there is an RNG configuration error */
-    ret = RNG_FAILURE_E;
-
-#endif /* HAVE_HASHDRBG */
-#endif /* CUSTOM_RAND_GENERATE_BLOCK */
-
-    return ret;
-}
-
-
-int wc_RNG_GenerateByte(WC_RNG* rng, byte* b)
-{
-    return wc_RNG_GenerateBlock(rng, b, 1);
-}
-
-
-int wc_FreeRng(WC_RNG* rng)
-{
-    int ret = 0;
-
-    if (rng == NULL)
-        return BAD_FUNC_ARG;
-
-#if defined(WOLFSSL_ASYNC_CRYPT)
-    wolfAsync_DevCtxFree(&rng->asyncDev, WOLFSSL_ASYNC_MARKER_RNG);
-#endif
-
-#ifdef HAVE_HASHDRBG
-    if (rng->drbg != NULL) {
-        if (Hash_DRBG_Uninstantiate(rng->drbg) != DRBG_SUCCESS)
-            ret = RNG_FAILURE_E;
-
-    #if !defined(WOLFSSL_NO_MALLOC) || defined(WOLFSSL_STATIC_MEMORY)
-        XFREE(rng->drbg, rng->heap, DYNAMIC_TYPE_RNG);
-    #endif
-        rng->drbg = NULL;
-    }
-
-    rng->status = DRBG_NOT_INIT;
-#endif /* HAVE_HASHDRBG */
-
-    return ret;
-}
-
-#ifdef HAVE_HASHDRBG
-int wc_RNG_HealthTest(int reseed, const byte* seedA, word32 seedASz,
-                                  const byte* seedB, word32 seedBSz,
-                                  byte* output, word32 outputSz)
-{
-    return wc_RNG_HealthTest_ex(reseed, NULL, 0,
-                                seedA, seedASz, seedB, seedBSz,
-                                output, outputSz,
-                                NULL, INVALID_DEVID);
-}
-
-
-int wc_RNG_HealthTest_ex(int reseed, const byte* nonce, word32 nonceSz,
-                                  const byte* seedA, word32 seedASz,
-                                  const byte* seedB, word32 seedBSz,
-                                  byte* output, word32 outputSz,
-                                  void* heap, int devId)
-{
-    int ret = -1;
-    DRBG* drbg;
-#ifndef WOLFSSL_SMALL_STACK
-    DRBG  drbg_var;
-#endif
-
-    if (seedA == NULL || output == NULL) {
-        return BAD_FUNC_ARG;
-    }
-
-    if (reseed != 0 && seedB == NULL) {
-        return BAD_FUNC_ARG;
-    }
-
-    if (outputSz != RNG_HEALTH_TEST_CHECK_SIZE) {
-        return ret;
-    }
-
-#ifdef WOLFSSL_SMALL_STACK
-    drbg = (DRBG*)XMALLOC(sizeof(DRBG), NULL, DYNAMIC_TYPE_RNG);
-    if (drbg == NULL) {
-        return MEMORY_E;
-    }
-#else
-    drbg = &drbg_var;
-#endif
-
-    if (Hash_DRBG_Instantiate(drbg, seedA, seedASz, nonce, nonceSz,
-                              heap, devId) != 0) {
-        goto exit_rng_ht;
-    }
-
-    if (reseed) {
-        if (Hash_DRBG_Reseed(drbg, seedB, seedBSz) != 0) {
-            goto exit_rng_ht;
-        }
-    }
-
-    /* This call to generate is prescribed by the NIST DRBGVS
-     * procedure. The results are thrown away. The known
-     * answer test checks the second block of DRBG out of
-     * the generator to ensure the internal state is updated
-     * as expected. */
-    if (Hash_DRBG_Generate(drbg, output, outputSz) != 0) {
-        goto exit_rng_ht;
-    }
-
-    if (Hash_DRBG_Generate(drbg, output, outputSz) != 0) {
-        goto exit_rng_ht;
-    }
-
-    /* Mark success */
-    ret = 0;
-
-exit_rng_ht:
-
-    /* This is safe to call even if Hash_DRBG_Instantiate fails */
-    if (Hash_DRBG_Uninstantiate(drbg) != 0) {
-        ret = -1;
-    }
-
-#ifdef WOLFSSL_SMALL_STACK
-    XFREE(drbg, NULL, DYNAMIC_TYPE_RNG);
-#endif
-
-    return ret;
-}
-
-
-const byte seedA[] = {
-    0x63, 0x36, 0x33, 0x77, 0xe4, 0x1e, 0x86, 0x46, 0x8d, 0xeb, 0x0a, 0xb4,
-    0xa8, 0xed, 0x68, 0x3f, 0x6a, 0x13, 0x4e, 0x47, 0xe0, 0x14, 0xc7, 0x00,
-    0x45, 0x4e, 0x81, 0xe9, 0x53, 0x58, 0xa5, 0x69, 0x80, 0x8a, 0xa3, 0x8f,
-    0x2a, 0x72, 0xa6, 0x23, 0x59, 0x91, 0x5a, 0x9f, 0x8a, 0x04, 0xca, 0x68
-};
-
-const byte reseedSeedA[] = {
-    0xe6, 0x2b, 0x8a, 0x8e, 0xe8, 0xf1, 0x41, 0xb6, 0x98, 0x05, 0x66, 0xe3,
-    0xbf, 0xe3, 0xc0, 0x49, 0x03, 0xda, 0xd4, 0xac, 0x2c, 0xdf, 0x9f, 0x22,
-    0x80, 0x01, 0x0a, 0x67, 0x39, 0xbc, 0x83, 0xd3
-};
-
-const byte outputA[] = {
-    0x04, 0xee, 0xc6, 0x3b, 0xb2, 0x31, 0xdf, 0x2c, 0x63, 0x0a, 0x1a, 0xfb,
-    0xe7, 0x24, 0x94, 0x9d, 0x00, 0x5a, 0x58, 0x78, 0x51, 0xe1, 0xaa, 0x79,
-    0x5e, 0x47, 0x73, 0x47, 0xc8, 0xb0, 0x56, 0x62, 0x1c, 0x18, 0xbd, 0xdc,
-    0xdd, 0x8d, 0x99, 0xfc, 0x5f, 0xc2, 0xb9, 0x20, 0x53, 0xd8, 0xcf, 0xac,
-    0xfb, 0x0b, 0xb8, 0x83, 0x12, 0x05, 0xfa, 0xd1, 0xdd, 0xd6, 0xc0, 0x71,
-    0x31, 0x8a, 0x60, 0x18, 0xf0, 0x3b, 0x73, 0xf5, 0xed, 0xe4, 0xd4, 0xd0,
-    0x71, 0xf9, 0xde, 0x03, 0xfd, 0x7a, 0xea, 0x10, 0x5d, 0x92, 0x99, 0xb8,
-    0xaf, 0x99, 0xaa, 0x07, 0x5b, 0xdb, 0x4d, 0xb9, 0xaa, 0x28, 0xc1, 0x8d,
-    0x17, 0x4b, 0x56, 0xee, 0x2a, 0x01, 0x4d, 0x09, 0x88, 0x96, 0xff, 0x22,
-    0x82, 0xc9, 0x55, 0xa8, 0x19, 0x69, 0xe0, 0x69, 0xfa, 0x8c, 0xe0, 0x07,
-    0xa1, 0x80, 0x18, 0x3a, 0x07, 0xdf, 0xae, 0x17
-};
-
-const byte seedB[] = {
-    0xa6, 0x5a, 0xd0, 0xf3, 0x45, 0xdb, 0x4e, 0x0e, 0xff, 0xe8, 0x75, 0xc3,
-    0xa2, 0xe7, 0x1f, 0x42, 0xc7, 0x12, 0x9d, 0x62, 0x0f, 0xf5, 0xc1, 0x19,
-    0xa9, 0xef, 0x55, 0xf0, 0x51, 0x85, 0xe0, 0xfb, /* nonce next */
-    0x85, 0x81, 0xf9, 0x31, 0x75, 0x17, 0x27, 0x6e, 0x06, 0xe9, 0x60, 0x7d,
-    0xdb, 0xcb, 0xcc, 0x2e
-};
-
-const byte outputB[] = {
-    0xd3, 0xe1, 0x60, 0xc3, 0x5b, 0x99, 0xf3, 0x40, 0xb2, 0x62, 0x82, 0x64,
-    0xd1, 0x75, 0x10, 0x60, 0xe0, 0x04, 0x5d, 0xa3, 0x83, 0xff, 0x57, 0xa5,
-    0x7d, 0x73, 0xa6, 0x73, 0xd2, 0xb8, 0xd8, 0x0d, 0xaa, 0xf6, 0xa6, 0xc3,
-    0x5a, 0x91, 0xbb, 0x45, 0x79, 0xd7, 0x3f, 0xd0, 0xc8, 0xfe, 0xd1, 0x11,
-    0xb0, 0x39, 0x13, 0x06, 0x82, 0x8a, 0xdf, 0xed, 0x52, 0x8f, 0x01, 0x81,
-    0x21, 0xb3, 0xfe, 0xbd, 0xc3, 0x43, 0xe7, 0x97, 0xb8, 0x7d, 0xbb, 0x63,
-    0xdb, 0x13, 0x33, 0xde, 0xd9, 0xd1, 0xec, 0xe1, 0x77, 0xcf, 0xa6, 0xb7,
-    0x1f, 0xe8, 0xab, 0x1d, 0xa4, 0x66, 0x24, 0xed, 0x64, 0x15, 0xe5, 0x1c,
-    0xcd, 0xe2, 0xc7, 0xca, 0x86, 0xe2, 0x83, 0x99, 0x0e, 0xea, 0xeb, 0x91,
-    0x12, 0x04, 0x15, 0x52, 0x8b, 0x22, 0x95, 0x91, 0x02, 0x81, 0xb0, 0x2d,
-    0xd4, 0x31, 0xf4, 0xc9, 0xf7, 0x04, 0x27, 0xdf
-};
-
-
-static int wc_RNG_HealthTestLocal(int reseed)
-{
-    int ret = 0;
-#ifdef WOLFSSL_SMALL_STACK
-    byte* check;
-#else
-    byte  check[RNG_HEALTH_TEST_CHECK_SIZE];
-#endif
-
-#ifdef WOLFSSL_SMALL_STACK
-    check = (byte*)XMALLOC(RNG_HEALTH_TEST_CHECK_SIZE, NULL,
-                           DYNAMIC_TYPE_TMP_BUFFER);
-    if (check == NULL) {
-        return MEMORY_E;
-    }
-#endif
-
-    if (reseed) {
-        ret = wc_RNG_HealthTest(1, seedA, sizeof(seedA),
-                                reseedSeedA, sizeof(reseedSeedA),
-                                check, RNG_HEALTH_TEST_CHECK_SIZE);
-        if (ret == 0) {
-            if (ConstantCompare(check, outputA,
-                                RNG_HEALTH_TEST_CHECK_SIZE) != 0)
-                ret = -1;
-        }
-    }
-    else {
-        ret = wc_RNG_HealthTest(0, seedB, sizeof(seedB),
-                                NULL, 0,
-                                check, RNG_HEALTH_TEST_CHECK_SIZE);
-        if (ret == 0) {
-            if (ConstantCompare(check, outputB,
-                                RNG_HEALTH_TEST_CHECK_SIZE) != 0)
-                ret = -1;
-        }
-
-        /* The previous test cases use a large seed instead of a seed and nonce.
-         * seedB is actually from a test case with a seed and nonce, and
-         * just concatenates them. The pivot point between seed and nonce is
-         * byte 32, feed them into the health test separately. */
-        if (ret == 0) {
-            ret = wc_RNG_HealthTest_ex(0,
-                                    seedB + 32, sizeof(seedB) - 32,
-                                    seedB, 32,
-                                    NULL, 0,
-                                    check, RNG_HEALTH_TEST_CHECK_SIZE,
-                                    NULL, INVALID_DEVID);
-            if (ret == 0) {
-                if (ConstantCompare(check, outputB, sizeof(outputB)) != 0)
-                    ret = -1;
-            }
-        }
-    }
-
-#ifdef WOLFSSL_SMALL_STACK
-    XFREE(check, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
-    return ret;
-}
-
-#endif /* HAVE_HASHDRBG */
-
-
-#ifdef HAVE_WNR
-
-/*
- * Init global Whitewood netRandom context
- * Returns 0 on success, negative on error
- */
-int wc_InitNetRandom(const char* configFile, wnr_hmac_key hmac_cb, int timeout)
-{
-    if (configFile == NULL || timeout < 0)
-        return BAD_FUNC_ARG;
-
-    if (wnr_mutex_init > 0) {
-        WOLFSSL_MSG("netRandom context already created, skipping");
-        return 0;
-    }
-
-    if (wc_InitMutex(&wnr_mutex) != 0) {
-        WOLFSSL_MSG("Bad Init Mutex wnr_mutex");
-        return BAD_MUTEX_E;
-    }
-    wnr_mutex_init = 1;
-
-    if (wc_LockMutex(&wnr_mutex) != 0) {
-        WOLFSSL_MSG("Bad Lock Mutex wnr_mutex");
-        return BAD_MUTEX_E;
-    }
-
-    /* store entropy timeout */
-    wnr_timeout = timeout;
-
-    /* create global wnr_context struct */
-    if (wnr_create(&wnr_ctx) != WNR_ERROR_NONE) {
-        WOLFSSL_MSG("Error creating global netRandom context");
-        return RNG_FAILURE_E;
-    }
-
-    /* load config file */
-    if (wnr_config_loadf(wnr_ctx, (char*)configFile) != WNR_ERROR_NONE) {
-        WOLFSSL_MSG("Error loading config file into netRandom context");
-        wnr_destroy(wnr_ctx);
-        wnr_ctx = NULL;
-        return RNG_FAILURE_E;
-    }
-
-    /* create/init polling mechanism */
-    if (wnr_poll_create() != WNR_ERROR_NONE) {
-        printf("ERROR: wnr_poll_create() failed\n");
-        WOLFSSL_MSG("Error initializing netRandom polling mechanism");
-        wnr_destroy(wnr_ctx);
-        wnr_ctx = NULL;
-        return RNG_FAILURE_E;
-    }
-
-    /* validate config, set HMAC callback (optional) */
-    if (wnr_setup(wnr_ctx, hmac_cb) != WNR_ERROR_NONE) {
-        WOLFSSL_MSG("Error setting up netRandom context");
-        wnr_destroy(wnr_ctx);
-        wnr_ctx = NULL;
-        wnr_poll_destroy();
-        return RNG_FAILURE_E;
-    }
-
-    wc_UnLockMutex(&wnr_mutex);
-
-    return 0;
-}
-
-/*
- * Free global Whitewood netRandom context
- * Returns 0 on success, negative on error
- */
-int wc_FreeNetRandom(void)
-{
-    if (wnr_mutex_init > 0) {
-
-        if (wc_LockMutex(&wnr_mutex) != 0) {
-            WOLFSSL_MSG("Bad Lock Mutex wnr_mutex");
-            return BAD_MUTEX_E;
-        }
-
-        if (wnr_ctx != NULL) {
-            wnr_destroy(wnr_ctx);
-            wnr_ctx = NULL;
-        }
-        wnr_poll_destroy();
-
-        wc_UnLockMutex(&wnr_mutex);
-
-        wc_FreeMutex(&wnr_mutex);
-        wnr_mutex_init = 0;
-    }
-
-    return 0;
-}
-
-#endif /* HAVE_WNR */
-
-
-#if defined(HAVE_INTEL_RDRAND) || defined(HAVE_INTEL_RDSEED)
-
-#ifdef WOLFSSL_ASYNC_CRYPT
-    /* need more retries if multiple cores */
-    #define INTELRD_RETRY (32 * 8)
-#else
-    #define INTELRD_RETRY 32
-#endif
-
-#ifdef HAVE_INTEL_RDSEED
-
-#ifndef USE_WINDOWS_API
-
-    /* return 0 on success */
-    static WC_INLINE int IntelRDseed64(word64* seed)
-    {
-        unsigned char ok;
-
-        __asm__ volatile("rdseed %0; setc %1":"=r"(*seed), "=qm"(ok));
-        return (ok) ? 0 : -1;
-    }
-
-#else /* USE_WINDOWS_API */
-    /* The compiler Visual Studio uses does not allow inline assembly.
-     * It does allow for Intel intrinsic functions. */
-
-    /* return 0 on success */
-    static WC_INLINE int IntelRDseed64(word64* seed)
-    {
-        int ok;
-
-        ok = _rdseed64_step(seed);
-        return (ok) ? 0 : -1;
-    }
-
-#endif /* USE_WINDOWS_API */
-
-/* return 0 on success */
-static WC_INLINE int IntelRDseed64_r(word64* rnd)
-{
-    int i;
-    for (i = 0; i < INTELRD_RETRY; i++) {
-        if (IntelRDseed64(rnd) == 0)
-            return 0;
-    }
-    return -1;
-}
-
-/* return 0 on success */
-static int wc_GenerateSeed_IntelRD(OS_Seed* os, byte* output, word32 sz)
-{
-    int ret;
-    word64 rndTmp;
-
-    (void)os;
-
-    if (!IS_INTEL_RDSEED(intel_flags))
-        return -1;
-
-    for (; (sz / sizeof(word64)) > 0; sz -= sizeof(word64),
-                                                    output += sizeof(word64)) {
-        ret = IntelRDseed64_r((word64*)output);
-        if (ret != 0)
-            return ret;
-    }
-    if (sz == 0)
-        return 0;
-
-    /* handle unaligned remainder */
-    ret = IntelRDseed64_r(&rndTmp);
-    if (ret != 0)
-        return ret;
-
-    XMEMCPY(output, &rndTmp, sz);
-    ForceZero(&rndTmp, sizeof(rndTmp));
-
-    return 0;
-}
-
-#endif /* HAVE_INTEL_RDSEED */
-
-#ifdef HAVE_INTEL_RDRAND
-
-#ifndef USE_WINDOWS_API
-
-/* return 0 on success */
-static WC_INLINE int IntelRDrand64(word64 *rnd)
-{
-    unsigned char ok;
-
-    __asm__ volatile("rdrand %0; setc %1":"=r"(*rnd), "=qm"(ok));
-
-    return (ok) ? 0 : -1;
-}
-
-#else /* USE_WINDOWS_API */
-    /* The compiler Visual Studio uses does not allow inline assembly.
-     * It does allow for Intel intrinsic functions. */
-
-/* return 0 on success */
-static WC_INLINE int IntelRDrand64(word64 *rnd)
-{
-    int ok;
-
-    ok = _rdrand64_step(rnd);
-
-    return (ok) ? 0 : -1;
-}
-
-#endif /* USE_WINDOWS_API */
-
-/* return 0 on success */
-static WC_INLINE int IntelRDrand64_r(word64 *rnd)
-{
-    int i;
-    for (i = 0; i < INTELRD_RETRY; i++) {
-        if (IntelRDrand64(rnd) == 0)
-            return 0;
-    }
-    return -1;
-}
-
-/* return 0 on success */
-static int wc_GenerateRand_IntelRD(OS_Seed* os, byte* output, word32 sz)
-{
-    int ret;
-    word64 rndTmp;
-
-    (void)os;
-
-    if (!IS_INTEL_RDRAND(intel_flags))
-        return -1;
-
-    for (; (sz / sizeof(word64)) > 0; sz -= sizeof(word64),
-                                                    output += sizeof(word64)) {
-        ret = IntelRDrand64_r((word64 *)output);
-        if (ret != 0)
-            return ret;
-    }
-    if (sz == 0)
-        return 0;
-
-    /* handle unaligned remainder */
-    ret = IntelRDrand64_r(&rndTmp);
-    if (ret != 0)
-        return ret;
-
-    XMEMCPY(output, &rndTmp, sz);
-
-    return 0;
-}
-
-#endif /* HAVE_INTEL_RDRAND */
-#endif /* HAVE_INTEL_RDRAND || HAVE_INTEL_RDSEED */
-
-
-/* Begin wc_GenerateSeed Implementations */
-#if defined(CUSTOM_RAND_GENERATE_SEED)
-
-    /* Implement your own random generation function
-     * Return 0 to indicate success
-     * int rand_gen_seed(byte* output, word32 sz);
-     * #define CUSTOM_RAND_GENERATE_SEED  rand_gen_seed */
-
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        (void)os; /* Suppress unused arg warning */
-        return CUSTOM_RAND_GENERATE_SEED(output, sz);
-    }
-
-#elif defined(CUSTOM_RAND_GENERATE_SEED_OS)
-
-    /* Implement your own random generation function,
-     *  which includes OS_Seed.
-     * Return 0 to indicate success
-     * int rand_gen_seed(OS_Seed* os, byte* output, word32 sz);
-     * #define CUSTOM_RAND_GENERATE_SEED_OS  rand_gen_seed */
-
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        return CUSTOM_RAND_GENERATE_SEED_OS(os, output, sz);
-    }
-
-#elif defined(CUSTOM_RAND_GENERATE)
-
-   /* Implement your own random generation function
-    * word32 rand_gen(void);
-    * #define CUSTOM_RAND_GENERATE  rand_gen  */
-
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        word32 i = 0;
-
-        (void)os;
-
-        while (i < sz)
-        {
-            /* If not aligned or there is odd/remainder */
-            if( (i + sizeof(CUSTOM_RAND_TYPE)) > sz ||
-                ((wolfssl_word)&output[i] % sizeof(CUSTOM_RAND_TYPE)) != 0
-            ) {
-                /* Single byte at a time */
-                output[i++] = (byte)CUSTOM_RAND_GENERATE();
-            }
-            else {
-                /* Use native 8, 16, 32 or 64 copy instruction */
-                *((CUSTOM_RAND_TYPE*)&output[i]) = CUSTOM_RAND_GENERATE();
-                i += sizeof(CUSTOM_RAND_TYPE);
-            }
-        }
-
-        return 0;
-    }
-
-#elif defined(WOLFSSL_SGX)
-
-int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-{
-    int ret = !SGX_SUCCESS;
-	int i, read_max = 10;
-
-	for (i = 0; i < read_max && ret != SGX_SUCCESS; i++) {
-		ret = sgx_read_rand(output, sz);
-	}
-
-	(void)os;
-	return (ret == SGX_SUCCESS) ? 0 : 1;
-}
-
-#elif defined(USE_WINDOWS_API)
-
-int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-{
-#ifdef WOLF_CRYPTO_CB
-    int ret;
-
-    if (os != NULL && os->devId != INVALID_DEVID) {
-        ret = wc_CryptoCb_RandomSeed(os, output, sz);
-        if (ret != CRYPTOCB_UNAVAILABLE)
-            return ret;
-        /* fall-through when unavailable */
-    }
-#endif
-
-    #ifdef HAVE_INTEL_RDSEED
-        if (IS_INTEL_RDSEED(intel_flags)) {
-             if (!wc_GenerateSeed_IntelRD(NULL, output, sz)) {
-                 /* success, we're done */
-                 return 0;
-             }
-        #ifdef FORCE_FAILURE_RDSEED
-             /* don't fall back to CryptoAPI */
-             return READ_RAN_E;
-        #endif
-        }
-    #endif /* HAVE_INTEL_RDSEED */
-
-    if(!CryptAcquireContext(&os->handle, 0, 0, PROV_RSA_FULL,
-                            CRYPT_VERIFYCONTEXT))
-        return WINCRYPT_E;
-
-    if (!CryptGenRandom(os->handle, sz, output))
-        return CRYPTGEN_E;
-
-    CryptReleaseContext(os->handle, 0);
-
-    return 0;
-}
-
-
-#elif defined(HAVE_RTP_SYS) || defined(EBSNET)
-
-#include "rtprand.h"   /* rtp_rand () */
-#include "rtptime.h"   /* rtp_get_system_msec() */
-
-int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-{
-    word32 i;
-
-    rtp_srand(rtp_get_system_msec());
-    for (i = 0; i < sz; i++ ) {
-        output[i] = rtp_rand() % 256;
-    }
-
-    return 0;
-}
-
-
-#elif defined(MICROCHIP_PIC32)
-
-    #ifdef MICROCHIP_MPLAB_HARMONY
-        #ifdef MICROCHIP_MPLAB_HARMONY_3
-            #include "system/time/sys_time.h"
-            #define PIC32_SEED_COUNT SYS_TIME_CounterGet
-        #else
-            #define PIC32_SEED_COUNT _CP0_GET_COUNT
-        #endif
-    #else
-        #if !defined(WOLFSSL_MICROCHIP_PIC32MZ)
-            #include <peripheral/timer.h>
-        #endif
-        extern word32 ReadCoreTimer(void);
-        #define PIC32_SEED_COUNT ReadCoreTimer
-    #endif
-
-    #ifdef WOLFSSL_PIC32MZ_RNG
-        #include "xc.h"
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            int i;
-            byte rnd[8];
-            word32 *rnd32 = (word32 *)rnd;
-            word32 size = sz;
-            byte* op = output;
-
-#if ((__PIC32_FEATURE_SET0 == 'E') && (__PIC32_FEATURE_SET1 == 'C'))
-            RNGNUMGEN1 = _CP0_GET_COUNT();
-            RNGPOLY1 = _CP0_GET_COUNT();
-            RNGPOLY2 = _CP0_GET_COUNT();
-            RNGNUMGEN2 = _CP0_GET_COUNT();
-#else
-            // All others can be seeded from the TRNG
-            RNGCONbits.TRNGMODE = 1;
-            RNGCONbits.TRNGEN = 1;
-            while (RNGCNT < 64);
-            RNGCONbits.LOAD = 1;
-            while (RNGCONbits.LOAD == 1);
-            while (RNGCNT < 64);
-            RNGPOLY2 = RNGSEED2;
-            RNGPOLY1 = RNGSEED1;
-#endif
-
-            RNGCONbits.PLEN = 0x40;
-            RNGCONbits.PRNGEN = 1;
-            for (i=0; i<5; i++) { /* wait for RNGNUMGEN ready */
-                volatile int x, y;
-                x = RNGNUMGEN1;
-                y = RNGNUMGEN2;
-                (void)x;
-                (void)y;
-            }
-            do {
-                rnd32[0] = RNGNUMGEN1;
-                rnd32[1] = RNGNUMGEN2;
-
-                for(i=0; i<8; i++, op++) {
-                    *op = rnd[i];
-                    size --;
-                    if(size==0)break;
-                }
-            } while(size);
-            return 0;
-        }
-    #else  /* WOLFSSL_PIC32MZ_RNG */
-        /* uses the core timer, in nanoseconds to seed srand */
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            int i;
-            srand(PIC32_SEED_COUNT() * 25);
-
-            for (i = 0; i < sz; i++ ) {
-                output[i] = rand() % 256;
-                if ( (i % 8) == 7)
-                    srand(PIC32_SEED_COUNT() * 25);
-            }
-            return 0;
-        }
-    #endif /* WOLFSSL_PIC32MZ_RNG */
-
-#elif defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX) || \
-      defined(FREESCALE_KSDK_BM) || defined(FREESCALE_FREE_RTOS)
-
-    #if defined(FREESCALE_K70_RNGA) || defined(FREESCALE_RNGA)
-        /*
-         * wc_Generates a RNG seed using the Random Number Generator Accelerator
-         * on the Kinetis K70. Documentation located in Chapter 37 of
-         * K70 Sub-Family Reference Manual (see Note 3 in the README for link).
-         */
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            word32 i;
-
-            /* turn on RNGA module */
-            #if defined(SIM_SCGC3_RNGA_MASK)
-                SIM_SCGC3 |= SIM_SCGC3_RNGA_MASK;
-            #endif
-            #if defined(SIM_SCGC6_RNGA_MASK)
-                /* additionally needed for at least K64F */
-                SIM_SCGC6 |= SIM_SCGC6_RNGA_MASK;
-            #endif
-
-            /* set SLP bit to 0 - "RNGA is not in sleep mode" */
-            RNG_CR &= ~RNG_CR_SLP_MASK;
-
-            /* set HA bit to 1 - "security violations masked" */
-            RNG_CR |= RNG_CR_HA_MASK;
-
-            /* set GO bit to 1 - "output register loaded with data" */
-            RNG_CR |= RNG_CR_GO_MASK;
-
-            for (i = 0; i < sz; i++) {
-
-                /* wait for RNG FIFO to be full */
-                while((RNG_SR & RNG_SR_OREG_LVL(0xF)) == 0) {}
-
-                /* get value */
-                output[i] = RNG_OR;
-            }
-
-            return 0;
-        }
-
-    #elif defined(FREESCALE_K53_RNGB) || defined(FREESCALE_RNGB)
-        /*
-         * wc_Generates a RNG seed using the Random Number Generator (RNGB)
-         * on the Kinetis K53. Documentation located in Chapter 33 of
-         * K53 Sub-Family Reference Manual (see note in the README for link).
-         */
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            int i;
-
-            /* turn on RNGB module */
-            SIM_SCGC3 |= SIM_SCGC3_RNGB_MASK;
-
-            /* reset RNGB */
-            RNG_CMD |= RNG_CMD_SR_MASK;
-
-            /* FIFO generate interrupt, return all zeros on underflow,
-             * set auto reseed */
-            RNG_CR |= (RNG_CR_FUFMOD_MASK | RNG_CR_AR_MASK);
-
-            /* gen seed, clear interrupts, clear errors */
-            RNG_CMD |= (RNG_CMD_GS_MASK | RNG_CMD_CI_MASK | RNG_CMD_CE_MASK);
-
-            /* wait for seeding to complete */
-            while ((RNG_SR & RNG_SR_SDN_MASK) == 0) {}
-
-            for (i = 0; i < sz; i++) {
-
-                /* wait for a word to be available from FIFO */
-                while((RNG_SR & RNG_SR_FIFO_LVL_MASK) == 0) {}
-
-                /* get value */
-                output[i] = RNG_OUT;
-            }
-
-            return 0;
-        }
-
-    #elif defined(FREESCALE_KSDK_2_0_TRNG)
-
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            status_t status;
-            status = TRNG_GetRandomData(TRNG0, output, sz);
-            if (status == kStatus_Success)
-            {
-                return(0);
-            }
-            else
-            {
-                return RAN_BLOCK_E;
-            }
-        }
-
-    #elif defined(FREESCALE_KSDK_2_0_RNGA)
-
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            status_t status;
-            status = RNGA_GetRandomData(RNG, output, sz);
-            if (status == kStatus_Success)
-            {
-                return(0);
-            }
-            else
-            {
-                return RAN_BLOCK_E;
-            }
-        }
-
-
-    #elif defined(FREESCALE_RNGA)
-
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            RNGA_DRV_GetRandomData(RNGA_INSTANCE, output, sz);
-            return 0;
-        }
-
-    #else
-        #define USE_TEST_GENSEED
-    #endif /* FREESCALE_K70_RNGA */
-
-#elif defined(STM32_RNG)
-     /* Generate a RNG seed using the hardware random number generator
-      * on the STM32F2/F4/F7/L4. */
-
-    #ifdef WOLFSSL_STM32_CUBEMX
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int ret;
-        RNG_HandleTypeDef hrng;
-        word32 i = 0;
-        (void)os;
-
-        ret = wolfSSL_CryptHwMutexLock();
-        if (ret != 0) {
-            return ret;
-        }
-
-        /* enable RNG clock source */
-        __HAL_RCC_RNG_CLK_ENABLE();
-
-        /* enable RNG peripheral */
-        XMEMSET(&hrng, 0, sizeof(hrng));
-        hrng.Instance = RNG;
-        HAL_RNG_Init(&hrng);
-
-        while (i < sz) {
-            /* If not aligned or there is odd/remainder */
-            if( (i + sizeof(word32)) > sz ||
-                ((wolfssl_word)&output[i] % sizeof(word32)) != 0
-            ) {
-                /* Single byte at a time */
-                uint32_t tmpRng = 0;
-                if (HAL_RNG_GenerateRandomNumber(&hrng, &tmpRng) != HAL_OK) {
-                    wolfSSL_CryptHwMutexUnLock();
-                    return RAN_BLOCK_E;
-                }
-                output[i++] = (byte)tmpRng;
-            }
-            else {
-                /* Use native 32 instruction */
-                if (HAL_RNG_GenerateRandomNumber(&hrng, (uint32_t*)&output[i]) != HAL_OK) {
-                    wolfSSL_CryptHwMutexUnLock();
-                    return RAN_BLOCK_E;
-                }
-                i += sizeof(word32);
-            }
-        }
-
-        wolfSSL_CryptHwMutexUnLock();
-
-        return 0;
-    }
-    #elif defined(WOLFSSL_STM32F427_RNG) || defined(WOLFSSL_STM32_RNG_NOLIB)
-
-    /* Generate a RNG seed using the hardware RNG on the STM32F427
-     * directly, following steps outlined in STM32F4 Reference
-     * Manual (Chapter 24) for STM32F4xx family. */
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int ret;
-        word32 i;
-        (void)os;
-
-        ret = wolfSSL_CryptHwMutexLock();
-        if (ret != 0) {
-            return ret;
-        }
-
-        /* enable RNG peripheral clock */
-        RCC->AHB2ENR |= RCC_AHB2ENR_RNGEN;
-
-        /* enable RNG interrupt, set IE bit in RNG->CR register */
-        RNG->CR |= RNG_CR_IE;
-
-        /* enable RNG, set RNGEN bit in RNG->CR. Activates RNG,
-         * RNG_LFSR, and error detector */
-        RNG->CR |= RNG_CR_RNGEN;
-
-        /* verify no errors, make sure SEIS and CEIS bits are 0
-         * in RNG->SR register */
-        if (RNG->SR & (RNG_SR_SECS | RNG_SR_CECS)) {
-            wolfSSL_CryptHwMutexUnLock();
-            return RNG_FAILURE_E;
-        }
-
-        for (i = 0; i < sz; i++) {
-            /* wait until RNG number is ready */
-            while ((RNG->SR & RNG_SR_DRDY) == 0) { }
-
-            /* get value */
-            output[i] = RNG->DR;
-        }
-
-        wolfSSL_CryptHwMutexUnLock();
-
-        return 0;
-    }
-
-    #else
-
-    /* Generate a RNG seed using the STM32 Standard Peripheral Library */
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int ret;
-        word32 i;
-        (void)os;
-
-        ret = wolfSSL_CryptHwMutexLock();
-        if (ret != 0) {
-            return ret;
-        }
-
-        /* enable RNG clock source */
-        RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_RNG, ENABLE);
-
-        /* reset RNG */
-        RNG_DeInit();
-
-        /* enable RNG peripheral */
-        RNG_Cmd(ENABLE);
-
-        /* verify no errors with RNG_CLK or Seed */
-        if (RNG_GetFlagStatus(RNG_FLAG_SECS | RNG_FLAG_CECS) != RESET) {
-            wolfSSL_CryptHwMutexUnLock();
-            return RNG_FAILURE_E;
-        }
-
-        for (i = 0; i < sz; i++) {
-            /* wait until RNG number is ready */
-            while (RNG_GetFlagStatus(RNG_FLAG_DRDY) == RESET) { }
-
-            /* get value */
-            output[i] = RNG_GetRandomNumber();
-        }
-
-        wolfSSL_CryptHwMutexUnLock();
-
-        return 0;
-    }
-    #endif /* WOLFSSL_STM32_CUBEMX */
-
-#elif defined(WOLFSSL_TIRTOS)
-
-    #include <xdc/runtime/Timestamp.h>
-    #include <stdlib.h>
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int i;
-        srand(xdc_runtime_Timestamp_get32());
-
-        for (i = 0; i < sz; i++ ) {
-            output[i] = rand() % 256;
-            if ((i % 8) == 7) {
-                srand(xdc_runtime_Timestamp_get32());
-            }
-        }
-
-        return 0;
-    }
-
-#elif defined(WOLFSSL_PB)
-
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        word32 i;
-        for (i = 0; i < sz; i++)
-            output[i] = UTL_Rand();
-
-        (void)os;
-
-        return 0;
-    }
-
-#elif defined(WOLFSSL_NUCLEUS)
-#include "nucleus.h"
-#include "kernel/plus_common.h"
-
-#warning "potential for not enough entropy, currently being used for testing"
-int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-{
-    int i;
-    srand(NU_Get_Time_Stamp());
-
-    for (i = 0; i < sz; i++ ) {
-        output[i] = rand() % 256;
-        if ((i % 8) == 7) {
-            srand(NU_Get_Time_Stamp());
-        }
-    }
-
-    return 0;
-}
-#elif defined(WOLFSSL_DEOS) && !defined(CUSTOM_RAND_GENERATE)
-    #include "stdlib.h"
-
-    #warning "potential for not enough entropy, currently being used for testing Deos"
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int i;
-        int seed = XTIME(0);
-        (void)os;
-
-        for (i = 0; i < sz; i++ ) {
-            output[i] = rand_r(&seed) % 256;
-            if ((i % 8) == 7) {
-                seed = XTIME(0);
-                rand_r(&seed);
-            }
-        }
-
-        return 0;
-    }
-#elif defined(WOLFSSL_VXWORKS)
-
-    #include <randomNumGen.h>
-
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz) {
-        STATUS        status;
-
-        #ifdef VXWORKS_SIM
-            /* cannot generate true entropy with VxWorks simulator */
-            #warning "not enough entropy, simulator for testing only"
-            int i = 0;
-
-            for (i = 0; i < 1000; i++) {
-                randomAddTimeStamp();
-            }
-        #endif
-
-        status = randBytes (output, sz);
-        if (status == ERROR) {
-            return RNG_FAILURE_E;
-        }
-
-        return 0;
-    }
-
-#elif defined(WOLFSSL_NRF51)
-    #include "app_error.h"
-    #include "nrf_drv_rng.h"
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int remaining = sz, length, pos = 0;
-        uint8_t available;
-        uint32_t err_code;
-
-        (void)os;
-
-        /* Make sure RNG is running */
-        err_code = nrf_drv_rng_init(NULL);
-        if (err_code != NRF_SUCCESS && err_code != NRF_ERROR_INVALID_STATE) {
-            return -1;
-        }
-
-        while (remaining > 0) {
-            err_code = nrf_drv_rng_bytes_available(&available);
-            if (err_code == NRF_SUCCESS) {
-                length = (remaining < available) ? remaining : available;
-                if (length > 0) {
-                    err_code = nrf_drv_rng_rand(&output[pos], length);
-                    remaining -= length;
-                    pos += length;
-                }
-            }
-
-            if (err_code != NRF_SUCCESS) {
-                break;
-            }
-        }
-
-        return (err_code == NRF_SUCCESS) ? 0 : -1;
-    }
-
-#elif defined(HAVE_WNR)
-
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        if (os == NULL || output == NULL || wnr_ctx == NULL ||
-                wnr_timeout < 0) {
-            return BAD_FUNC_ARG;
-        }
-
-        if (wnr_mutex_init == 0) {
-            WOLFSSL_MSG("netRandom context must be created before use");
-            return RNG_FAILURE_E;
-        }
-
-        if (wc_LockMutex(&wnr_mutex) != 0) {
-            WOLFSSL_MSG("Bad Lock Mutex wnr_mutex\n");
-            return BAD_MUTEX_E;
-        }
-
-        if (wnr_get_entropy(wnr_ctx, wnr_timeout, output, sz, sz) !=
-                WNR_ERROR_NONE)
-            return RNG_FAILURE_E;
-
-        wc_UnLockMutex(&wnr_mutex);
-
-        return 0;
-    }
-
-#elif defined(WOLFSSL_ATMEL)
-    #include <wolfssl/wolfcrypt/port/atmel/atmel.h>
-
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int ret = 0;
-
-        (void)os;
-        if (output == NULL) {
-            return BUFFER_E;
-        }
-
-        ret = atmel_get_random_number(sz, output);
-
-        return ret;
-    }
-
-#elif defined(INTIME_RTOS)
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int ret = 0;
-
-        (void)os;
-
-        if (output == NULL) {
-            return BUFFER_E;
-        }
-
-        /* Note: Investigate better solution */
-        /* no return to check */
-        arc4random_buf(output, sz);
-
-        return ret;
-    }
-
-#elif defined(WOLFSSL_WICED)
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int ret;
-        (void)os;
-
-        if (output == NULL || UINT16_MAX < sz) {
-            return BUFFER_E;
-        }
-
-        if ((ret = wiced_crypto_get_random((void*) output, sz) )
-                         != WICED_SUCCESS) {
-            return ret;
-        }
-
-        return ret;
-    }
-
-#elif defined(WOLFSSL_NETBURNER)
-    #warning using NetBurner pseudo random GetRandomByte for seed
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        word32 i;
-        (void)os;
-
-        if (output == NULL) {
-            return BUFFER_E;
-        }
-
-        for (i = 0; i < sz; i++) {
-            output[i] = GetRandomByte();
-
-            /* check if was a valid random number */
-            if (!RandomValid())
-                return RNG_FAILURE_E;
-        }
-
-        return 0;
-    }
-#elif defined(IDIRECT_DEV_RANDOM)
-
-    extern int getRandom( int sz, unsigned char *output );
-
-    int GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int num_bytes_returned = 0;
-
-        num_bytes_returned = getRandom( (int) sz, (unsigned char *) output );
-
-        return 0;
-    }
-
-#elif (defined(WOLFSSL_IMX6_CAAM) || defined(WOLFSSL_IMX6_CAAM_RNG))
-
-    #include <wolfssl/wolfcrypt/port/caam/wolfcaam.h>
-    #include <wolfssl/wolfcrypt/port/caam/caam_driver.h>
-
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        Buffer buf[1];
-        int ret  = 0;
-        int times = 1000, i;
-
-        (void)os;
-
-        if (output == NULL) {
-            return BUFFER_E;
-        }
-
-        buf[0].BufferType = DataBuffer | LastBuffer;
-        buf[0].TheAddress = (Address)output;
-        buf[0].Length     = sz;
-
-        /* Check Waiting to make sure entropy is ready */
-        for (i = 0; i < times; i++) {
-            ret = wc_caamAddAndWait(buf, NULL, CAAM_ENTROPY);
-            if (ret == Success) {
-                break;
-            }
-
-            /* driver could be waiting for entropy */
-            if (ret != RAN_BLOCK_E) {
-                return ret;
-            }
-            usleep(100);
-        }
-
-        if (i == times && ret != Success) {
-             return RNG_FAILURE_E;
-        }
-        else { /* Success case */
-            ret = 0;
-        }
-
-        return ret;
-    }
-
-#elif defined(WOLFSSL_APACHE_MYNEWT)
-
-    #include <stdlib.h>
-    #include "os/os_time.h"
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int i;
-        srand(os_time_get());
-
-        for (i = 0; i < sz; i++ ) {
-            output[i] = rand() % 256;
-            if ((i % 8) == 7) {
-                srand(os_time_get());
-            }
-        }
-
-        return 0;
-    }
-
-#elif defined(WOLFSSL_ESPIDF)
-    #if defined(WOLFSSL_ESPWROOM32) || defined(WOLFSSL_ESPWROOM32SE)
-        #include <esp_system.h>
-
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            word32 rand;
-            while (sz > 0) {
-                word32 len = sizeof(rand);
-                if (sz < len)
-                    len = sz;
-                /* Get one random 32-bit word from hw RNG */
-                rand = esp_random( );
-                XMEMCPY(output, &rand, len);
-                output += len;
-                sz -= len;
-            }
-
-            return 0;
-        }
-    #endif /* end WOLFSSL_ESPWROOM32 */
-
-#elif defined(WOLFSSL_RENESAS_TSIP)
-#if defined(WOLFSSL_RENESA_TSIP_IAREWRX)
-    #include "r_bsp/mcu/all/r_rx_compiler.h"
-#endif
-    #include "r_bsp/platform.h"
-    #include "r_tsip_rx_if.h"
-    
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int ret;
-        uint32_t buffer[4];
-
-        while (sz > 0) {
-            uint32_t len = sizeof(buffer);
-            
-            if (sz < len) {
-                len = sz;
-            }
-            /* return 4 words random number*/
-            ret = R_TSIP_GenerateRandomNumber(buffer);
-            if(ret == TSIP_SUCCESS) {
-                XMEMCPY(output, &buffer, len);
-                output += len;
-                sz -= len;
-            } else
-                return ret;
-        }
-        return ret;
-    }
-
-#elif defined(WOLFSSL_SCE) && !defined(WOLFSSL_SCE_NO_TRNG)
-    #include "hal_data.h"
-
-    #ifndef WOLFSSL_SCE_TRNG_HANDLE
-        #define WOLFSSL_SCE_TRNG_HANDLE g_sce_trng
-    #endif
-
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        uint32_t ret;
-        uint32_t blocks;
-        word32   len = sz;
-
-        ret = WOLFSSL_SCE_TRNG_HANDLE.p_api->open(WOLFSSL_SCE_TRNG_HANDLE.p_ctrl,
-                                                  WOLFSSL_SCE_TRNG_HANDLE.p_cfg);
-        if (ret != SSP_SUCCESS && ret != SSP_ERR_CRYPTO_ALREADY_OPEN) {
-            /* error opening TRNG driver */
-            return -1;
-        }
-
-        blocks = sz / sizeof(uint32_t);
-        if (blocks > 0) {
-            ret = WOLFSSL_SCE_TRNG_HANDLE.p_api->read(WOLFSSL_SCE_TRNG_HANDLE.p_ctrl,
-                                                      (uint32_t*)output, blocks);
-            if (ret != SSP_SUCCESS) {
-                return -1;
-            }
-        }
-
-        len = len - (blocks * sizeof(uint32_t));
-        if (len > 0) {
-            uint32_t tmp;
-
-            if (len > sizeof(uint32_t)) {
-                return -1;
-            }
-            ret = WOLFSSL_SCE_TRNG_HANDLE.p_api->read(WOLFSSL_SCE_TRNG_HANDLE.p_ctrl,
-                                                      (uint32_t*)tmp, 1);
-            if (ret != SSP_SUCCESS) {
-                return -1;
-            }
-            XMEMCPY(output + (blocks * sizeof(uint32_t)), (byte*)&tmp, len);
-        }
-
-        ret = WOLFSSL_SCE_TRNG_HANDLE.p_api->close(WOLFSSL_SCE_TRNG_HANDLE.p_ctrl);
-        if (ret != SSP_SUCCESS) {
-            /* error opening TRNG driver */
-            return -1;
-        }
-        return 0;
-    }
-#elif defined(CUSTOM_RAND_GENERATE_BLOCK)
-    /* #define CUSTOM_RAND_GENERATE_BLOCK myRngFunc
-     * extern int myRngFunc(byte* output, word32 sz);
-     */
-
-#elif defined(WOLFSSL_SAFERTOS) || defined(WOLFSSL_LEANPSK) || \
-      defined(WOLFSSL_IAR_ARM)  || defined(WOLFSSL_MDK_ARM) || \
-      defined(WOLFSSL_uITRON4)  || defined(WOLFSSL_uTKERNEL2) || \
-      defined(WOLFSSL_LPC43xx)  || defined(WOLFSSL_STM32F2xx) || \
-      defined(MBED)             || defined(WOLFSSL_EMBOS) || \
-      defined(WOLFSSL_GENSEED_FORTEST) || defined(WOLFSSL_CHIBIOS) || \
-      defined(WOLFSSL_CONTIKI)  || defined(WOLFSSL_AZSPHERE)
-
-    /* these platforms do not have a default random seed and
-       you'll need to implement your own wc_GenerateSeed or define via
-       CUSTOM_RAND_GENERATE_BLOCK */
-
-    #define USE_TEST_GENSEED
-
-#elif defined(WOLFSSL_ZEPHYR)
-
-        #include <entropy.h>
-    #ifndef _POSIX_C_SOURCE
-        #include <posix/time.h>
-    #else
-        #include <sys/time.h>
-    #endif
-
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            int ret = 0;
-            word32 rand;
-            while (sz > 0) {
-                word32 len = sizeof(rand);
-                if (sz < len)
-                    len = sz;
-                rand = sys_rand32_get();
-                XMEMCPY(output, &rand, len);
-                output += len;
-                sz -= len;
-            }
-
-            return ret;
-        }
-
-#elif defined(WOLFSSL_TELIT_M2MB)
-
-        #include "stdlib.h"
-        static long get_timestamp(void) {
-            long myTime = 0;
-            INT32 fd = m2mb_rtc_open("/dev/rtc0", 0);
-            if (fd >= 0) {
-                M2MB_RTC_TIMEVAL_T timeval;
-                m2mb_rtc_ioctl(fd, M2MB_RTC_IOCTL_GET_TIMEVAL, &timeval);
-                myTime = timeval.msec;
-                m2mb_rtc_close(fd);
-            }
-            return myTime;
-        }
-        int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-        {
-            int i;
-            srand(get_timestamp());
-            for (i = 0; i < sz; i++ ) {
-                output[i] = rand() % 256;
-                if ((i % 8) == 7) {
-                    srand(get_timestamp());
-                }
-            }
-            return 0;
-        }
-
-#elif defined(NO_DEV_RANDOM)
-
-    #error "you need to write an os specific wc_GenerateSeed() here"
-
-    /*
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        return 0;
-    }
-    */
-
-#else
-
-    /* may block */
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        int ret = 0;
-
-        if (os == NULL) {
-            return BAD_FUNC_ARG;
-        }
-
-    #ifdef WOLF_CRYPTO_CB
-        if (os->devId != INVALID_DEVID) {
-            ret = wc_CryptoCb_RandomSeed(os, output, sz);
-            if (ret != CRYPTOCB_UNAVAILABLE)
-                return ret;
-            /* fall-through when unavailable */
-            ret = 0; /* reset error code */
-        }
-    #endif
-
-    #ifdef HAVE_INTEL_RDSEED
-        if (IS_INTEL_RDSEED(intel_flags)) {
-             ret = wc_GenerateSeed_IntelRD(NULL, output, sz);
-             if (ret == 0) {
-                 /* success, we're done */
-                 return ret;
-             }
-        #ifdef FORCE_FAILURE_RDSEED
-             /* don't fallback to /dev/urandom */
-             return ret;
-        #else
-             /* reset error and fallback to using /dev/urandom */
-             ret = 0;
-        #endif
-        }
-    #endif /* HAVE_INTEL_RDSEED */
-
-    #ifndef NO_DEV_URANDOM /* way to disable use of /dev/urandom */
-        os->fd = open("/dev/urandom", O_RDONLY);
-        if (os->fd == -1)
-    #endif
-        {
-            /* may still have /dev/random */
-            os->fd = open("/dev/random", O_RDONLY);
-            if (os->fd == -1)
-                return OPEN_RAN_E;
-        }
-
-        while (sz) {
-            int len = (int)read(os->fd, output, sz);
-            if (len == -1) {
-                ret = READ_RAN_E;
-                break;
-            }
-
-            sz     -= len;
-            output += len;
-
-            if (sz) {
-    #if defined(BLOCKING) || defined(WC_RNG_BLOCKING)
-                sleep(0);             /* context switch */
-    #else
-                ret = RAN_BLOCK_E;
-                break;
-    #endif
-            }
-        }
-        close(os->fd);
-
-        return ret;
-    }
-
-#endif
-
-#ifdef USE_TEST_GENSEED
-    #ifndef _MSC_VER
-        #warning "write a real random seed!!!!, just for testing now"
-    #else
-        #pragma message("Warning: write a real random seed!!!!, just for testing now")
-    #endif
-    int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
-    {
-        word32 i;
-        for (i = 0; i < sz; i++ )
-            output[i] = i;
-
-        (void)os;
-
-        return 0;
-    }
-#endif
-
-
-/* End wc_GenerateSeed */
-#endif /* WC_NO_RNG */
-#endif /* HAVE_FIPS */