1 files changed, 16 insertions, 1 deletions
diff --git a/crypto/bn/bn_blind.c b/crypto/bn/bn_blind.c
index 0b6d1bccc2a2..7e5a1c52e27d 100644
--- a/crypto/bn/bn_blind.c
+++ b/crypto/bn/bn_blind.c
@@ -13,6 +13,20 @@
 
 #define BN_BLINDING_COUNTER     32
 
+struct bn_blinding_st {
+    BIGNUM *A;
+    BIGNUM *Ai;
+    BIGNUM *e;
+    BIGNUM *mod;                /* just a reference */
+    CRYPTO_THREAD_ID tid;
+    int counter;
+    unsigned long flags;
+    BN_MONT_CTX *m_ctx;
+    int (*bn_mod_exp) (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                       const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+    CRYPTO_RWLOCK *lock;
+};
+
 BN_BLINDING *BN_BLINDING_new(const BIGNUM *A, const BIGNUM *Ai, BIGNUM *mod)
 {
     BN_BLINDING *ret = NULL;
@@ -177,7 +191,8 @@ int BN_BLINDING_invert_ex(BIGNUM *n, const BIGNUM *r, BN_BLINDING *b,
             n->top = (int)(rtop & ~mask) | (ntop & mask);
             n->flags |= (BN_FLG_FIXED_TOP & ~mask);
         }
-        ret = BN_mod_mul_montgomery(n, n, r, b->m_ctx, ctx);
+        ret = bn_mul_mont_fixed_top(n, n, r, b->m_ctx, ctx);
+        bn_correct_top_consttime(n);
     } else {
         ret = BN_mod_mul(n, n, r, b->mod, ctx);
     }