diff --git a/wolfcrypt/src/rsa.c b/wolfcrypt/src/rsa.c
index 878d7ff39..fa09d704c 100644
--- a/wolfcrypt/src/rsa.c
+++ b/wolfcrypt/src/rsa.c
@@ -653,6 +653,91 @@ int wc_CheckRsaKey(RsaKey* key)
             ret = RSA_KEY_PAIR_E;
     }
 
+    /* Check d is less than n. */
+    if (ret == 0 ) {
+        if (mp_cmp(&key->d, &key->n) != MP_LT) {
+            ret = MP_EXPTMOD_E;
+        }
+    }
+    /* Check p*q = n. */
+    if (ret == 0 ) {
+        if (mp_mul(&key->p, &key->q, tmp) != MP_OKAY) {
+            ret = MP_EXPTMOD_E;
+        }
+    }
+    if (ret == 0 ) {
+        if (mp_cmp(&key->n, tmp) != MP_EQ) {
+            ret = MP_EXPTMOD_E;
+        }
+    }
+
+    /* Check dP, dQ and u if they exist */
+    if (ret == 0 && !mp_iszero(&key->dP)) {
+        if (ret == 0) {
+            if (mp_sub_d(&key->p, 1, tmp) != MP_OKAY) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+        /* Check dP <= p-1. */
+        if (ret == 0) {
+            if (mp_cmp(&key->dP, tmp) != MP_LT) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+        /* Check e*dP mod p-1 = 1. (dP = 1/e mod p-1) */
+        if (ret == 0) {
+            if (mp_mulmod(&key->dP, &key->e, tmp, tmp) != MP_OKAY) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+        if (ret == 0 ) {
+            if (!mp_isone(tmp)) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+
+        if (ret == 0) {
+            if (mp_sub_d(&key->q, 1, tmp) != MP_OKAY) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+        /* Check dQ <= q-1. */
+        if (ret == 0) {
+            if (mp_cmp(&key->dQ, tmp) != MP_LT) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+        /* Check e*dP mod p-1 = 1. (dQ = 1/e mod q-1) */
+        if (ret == 0) {
+            if (mp_mulmod(&key->dQ, &key->e, tmp, tmp) != MP_OKAY) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+        if (ret == 0 ) {
+            if (!mp_isone(tmp)) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+
+        /* Check u <= p. */
+        if (ret == 0) {
+            if (mp_cmp(&key->u, &key->p) != MP_LT) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+        /* Check u*q mod p = 1. (u = 1/q mod p) */
+        if (ret == 0) {
+            if (mp_mulmod(&key->u, &key->q, &key->p, tmp) != MP_OKAY) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+        if (ret == 0 ) {
+            if (!mp_isone(tmp)) {
+                ret = MP_EXPTMOD_E;
+            }
+        }
+    }
+
     mp_forcezero(tmp);
     mp_clear(tmp);
     mp_clear(k);