Fix SRP client key computation

Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Matt Caswell <matt@openssl.org>
GH: #1017

diff --git a/crypto/srp/srp_lib.c b/crypto/srp/srp_lib.c
index ff061757472959008d2144673f651233e05074b8..780f5ab5182639a7c652482334e2badce709e44d 100644 (file)
--- a/crypto/srp/srp_lib.c
+++ b/crypto/srp/srp_lib.c
@@ -228,9 +228,9 @@ BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x,
         goto err;
     if (!BN_mod_sub(tmp, B, tmp2, N, bn_ctx))
         goto err;
-    if (!BN_mod_mul(tmp3, u, x, N, bn_ctx))
+    if (!BN_mul(tmp3, u, x, bn_ctx))
         goto err;
-    if (!BN_mod_add(tmp2, a, tmp3, N, bn_ctx))
+    if (!BN_add(tmp2, a, tmp3))
         goto err;
     if (!BN_mod_exp(K, tmp, tmp2, N, bn_ctx))
         goto err;