From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 19:20:00 +0200 Subject: Adding upstream version 2:4.20.0+dfsg. Signed-off-by: Daniel Baumann --- lib/crypto/gnutls_weak_crypto.c | 47 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 lib/crypto/gnutls_weak_crypto.c (limited to 'lib/crypto/gnutls_weak_crypto.c') diff --git a/lib/crypto/gnutls_weak_crypto.c b/lib/crypto/gnutls_weak_crypto.c new file mode 100644 index 0000000..dcc53bb --- /dev/null +++ b/lib/crypto/gnutls_weak_crypto.c @@ -0,0 +1,47 @@ +/* + * Copyright (c) 2019 Andreas Schneider + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "includes.h" +#include "lib/crypto/gnutls_helpers.h" + +#include +#include + +bool samba_gnutls_weak_crypto_allowed(void) +{ + gnutls_cipher_hd_t cipher_hnd = NULL; + gnutls_datum_t key = { + .data = discard_const_p(unsigned char, "SystemLibraryDTC"), + .size = 16, + }; + int rc; + + /* + * If we can't initialize RC4 then weak crypto is not allowed. + */ + rc = gnutls_cipher_init(&cipher_hnd, + GNUTLS_CIPHER_ARCFOUR_128, + &key, + NULL); + if (rc == GNUTLS_E_UNWANTED_ALGORITHM) { + return false; + } + + gnutls_cipher_deinit(cipher_hnd); + + return true; +} -- cgit v1.2.3