From 940e0c106c4b636db2910f9de6869763bb346ab1 Mon Sep 17 00:00:00 2001 From: Andreas Schneider Date: Wed, 15 May 2019 08:09:35 +0200 Subject: [PATCH] libcli:smb: Use GnuTLS HMAC MD5 in smb_key_derivation() Signed-off-by: Andreas Schneider Reviewed-by: Andrew Bartlett --- libcli/smb/smb_signing.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/libcli/smb/smb_signing.c b/libcli/smb/smb_signing.c index 0ffd1095b6b..ad89a78e714 100644 --- a/libcli/smb/smb_signing.c +++ b/libcli/smb/smb_signing.c @@ -20,7 +20,6 @@ */ #include "includes.h" -#include "../lib/crypto/crypto.h" #include "smb_common.h" #include "smb_signing.h" @@ -520,11 +519,12 @@ void smb_key_derivation(const uint8_t *KI, size_t KI_len, 0x31, 0x66, 0x09, 0x48, 0x88, 0xcc, 0x18, 0xa3, 0xb2, 0x1f, 0x1f, 0x1b, 0x90, 0x4e, 0xd7, 0xe1 }; - HMACMD5Context ctx; - hmac_md5_init_limK_to_64(KI, KI_len, &ctx); - hmac_md5_update(SSKeyHash, sizeof(SSKeyHash), &ctx); - hmac_md5_final(KO, &ctx); - - ZERO_STRUCT(ctx); + /* The callers passing down KI_len of 16 so no need to limit to 64 */ + gnutls_hmac_fast(GNUTLS_MAC_MD5, + KI, + KI_len, + SSKeyHash, + sizeof(SSKeyHash), + KO); } -- 2.47.3