From: Jouni Malinen <jouni@codeaurora.org>
Date: Thu, 17 May 2018 19:02:02 +0000 (+0300)
Subject: wolfSSL: Fix crypto_bignum_rshift() wrapper
X-Git-Tag: hostap_2_7~331
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9973129646af03565f6df8a5d173d3dee2bddcb2;p=thirdparty%2Fhostap.git

wolfSSL: Fix crypto_bignum_rshift() wrapper

The n argument to this function is number of bits, not bytes, to shift.
As such, need to use mp_rshb() instead of mp_rshd(). This fixes EAP-pwd
with P-521 curve.

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

diff --git a/src/crypto/crypto_wolfssl.c b/src/crypto/crypto_wolfssl.c
index bc4fd6a2a..b5a1e3fa3 100644
--- a/src/crypto/crypto_wolfssl.c
+++ b/src/crypto/crypto_wolfssl.c
@@ -1181,7 +1181,7 @@ int crypto_bignum_rshift(const struct crypto_bignum *a, int n,
 {
 	if (mp_copy((mp_int *) a, (mp_int *) r) != MP_OKAY)
 		return -1;
-	mp_rshd((mp_int *) r, n);
+	mp_rshb((mp_int *) r, n);
 	return 0;
 }