int wc_SetSubjectKeyId(Cert *cert, const char* file)
{
    int     ret, derSz;
    byte*   der;
    word32  idx;
    RsaKey  *rsakey = NULL;
    ecc_key *eckey = NULL;

    if (cert == NULL || file == NULL)
        return BAD_FUNC_ARG;

    der = (byte*)XMALLOC(MAX_PUBLIC_KEY_SZ, cert->heap, DYNAMIC_TYPE_CERT);
    if (der == NULL) {
        WOLFSSL_MSG("wc_SetSubjectKeyId memory Problem");
        return MEMORY_E;
    }
    derSz = MAX_PUBLIC_KEY_SZ;

    XMEMSET(der, 0, derSz);
    derSz = wc_PemPubKeyToDer(file, der, derSz);
    if (derSz <= 0) {
        XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
        return derSz;
    }

    /* Load PubKey in internal structure */
#ifndef NO_RSA
    rsakey = (RsaKey*) XMALLOC(sizeof(RsaKey), cert->heap, DYNAMIC_TYPE_RSA);
    if (rsakey == NULL) {
        XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
        return MEMORY_E;
    }

    if (wc_InitRsaKey(rsakey, cert->heap) != 0) {
        WOLFSSL_MSG("wc_InitRsaKey failure");
        XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
        XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
        return MEMORY_E;
    }

    idx = 0;
    ret = wc_RsaPublicKeyDecode(der, &idx, rsakey, derSz);
    if (ret != 0)
#endif
    {
#ifndef NO_RSA
        WOLFSSL_MSG("wc_RsaPublicKeyDecode failed");
        wc_FreeRsaKey(rsakey);
        XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
        rsakey = NULL;
#endif
#ifdef HAVE_ECC
        /* Check to load ecc public key */
        eckey = (ecc_key*) XMALLOC(sizeof(ecc_key), cert->heap,
                                                              DYNAMIC_TYPE_ECC);
        if (eckey == NULL) {
            XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
            return MEMORY_E;
        }

        if (wc_ecc_init(eckey) != 0) {
            WOLFSSL_MSG("wc_ecc_init failure");
            wc_ecc_free(eckey);
            XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
            XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
            return MEMORY_E;
        }

        idx = 0;
        ret = wc_EccPublicKeyDecode(der, &idx, eckey, derSz);
        if (ret != 0) {
            WOLFSSL_MSG("wc_EccPublicKeyDecode failed");
            XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
            wc_ecc_free(eckey);
            XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
            return PUBLIC_KEY_E;
        }
#else
        XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
        return PUBLIC_KEY_E;
#endif /* HAVE_ECC */
    }

    XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);

    ret = wc_SetSubjectKeyIdFromPublicKey(cert, rsakey, eckey);

#ifndef NO_RSA
    wc_FreeRsaKey(rsakey);
    XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
#endif
#ifdef HAVE_ECC
    wc_ecc_free(eckey);
    XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
#endif
    return ret;
}
int wc_SetSubjectKeyId(Cert *cert, const char* file)
{
    int     ret, derSz;
    byte*   der;
    word32  idx;
    RsaKey  *rsakey = NULL;
    ecc_key *eckey = NULL;

    if (cert == NULL || file == NULL)
        return BAD_FUNC_ARG;

    der = (byte*)XMALLOC(MAX_PUBLIC_KEY_SZ, cert->heap, DYNAMIC_TYPE_CERT);
    if (der == NULL) {
        WOLFSSL_MSG("wc_SetSubjectKeyId memory Problem");
        return MEMORY_E;
    }
    derSz = MAX_PUBLIC_KEY_SZ;

    XMEMSET(der, 0, derSz);
    derSz = wc_PemPubKeyToDer(file, der, derSz);
    if (derSz <= 0) {
        XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
        return derSz;
    }

     
#ifndef NO_RSA
    rsakey = (RsaKey*) XMALLOC(sizeof(RsaKey), cert->heap, DYNAMIC_TYPE_RSA);
    if (rsakey == NULL) {
        XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
        return MEMORY_E;
    }

    if (wc_InitRsaKey(rsakey, cert->heap) != 0) {
        WOLFSSL_MSG("wc_InitRsaKey failure");
        XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
        XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
        return MEMORY_E;
    }

    idx = 0;
    ret = wc_RsaPublicKeyDecode(der, &idx, rsakey, derSz);
    if (ret != 0)
#endif
    {
#ifndef NO_RSA
        WOLFSSL_MSG("wc_RsaPublicKeyDecode failed");
        wc_FreeRsaKey(rsakey);
        XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
        rsakey = NULL;
#endif
#ifdef HAVE_ECC
         
        eckey = (ecc_key*) XMALLOC(sizeof(ecc_key), cert->heap,
                                                              DYNAMIC_TYPE_ECC);
        if (eckey == NULL) {
            XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
            return MEMORY_E;
        }

        if (wc_ecc_init(eckey) != 0) {
            WOLFSSL_MSG("wc_ecc_init failure");
            wc_ecc_free(eckey);
            XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
            XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
            return MEMORY_E;
        }

        idx = 0;
        ret = wc_EccPublicKeyDecode(der, &idx, eckey, derSz);
        if (ret != 0) {
            WOLFSSL_MSG("wc_EccPublicKeyDecode failed");
            XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
            wc_ecc_free(eckey);
            XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
            return PUBLIC_KEY_E;
        }
#else
        XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
        return PUBLIC_KEY_E;
#endif  
    }

    XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);

    ret = wc_SetSubjectKeyIdFromPublicKey(cert, rsakey, eckey);

#ifndef NO_RSA
    wc_FreeRsaKey(rsakey);
    XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
#endif
#ifdef HAVE_ECC
    wc_ecc_free(eckey);
    XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
#endif
    return ret;
}