From: Jouni Malinen <jouni@codeaurora.org>
Date: Mon, 14 Oct 2019 16:27:47 +0000 (+0300)
Subject: wolfSSL: Fix crypto_bignum_sub()
X-Git-Tag: hostap_2_10~2300
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1766e608ba1114220f3b3598e77aa53b50c38a6e;p=thirdparty%2Fhostap.git

wolfSSL: Fix crypto_bignum_sub()

The initial crypto wrapper implementation for wolfSSL seems to have
included a copy-paste error in crypto_bignum_sub() implementation that
was identical to crypto_bignum_add() while mp_sub() should have been
used instead of mp_add().

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
---

diff --git a/src/crypto/crypto_wolfssl.c b/src/crypto/crypto_wolfssl.c
index e9894b335..3069b4a7a 100644
--- a/src/crypto/crypto_wolfssl.c
+++ b/src/crypto/crypto_wolfssl.c
@@ -1171,7 +1171,7 @@ int crypto_bignum_sub(const struct crypto_bignum *a,
 	if (TEST_FAIL())
 		return -1;
 
-	return mp_add((mp_int *) a, (mp_int *) b,
+	return mp_sub((mp_int *) a, (mp_int *) b,
 		      (mp_int *) r) == MP_OKAY ? 0 : -1;
 }