diff options
Diffstat (limited to 'qemu/roms/ipxe/src/crypto/random_nz.c')
-rw-r--r-- | qemu/roms/ipxe/src/crypto/random_nz.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/qemu/roms/ipxe/src/crypto/random_nz.c b/qemu/roms/ipxe/src/crypto/random_nz.c deleted file mode 100644 index 5fe576e05..000000000 --- a/qemu/roms/ipxe/src/crypto/random_nz.c +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>. - * - * 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 2 of the - * License, or 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, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -/** @file - * - * Random non-zero bytes - * - * The RSA algorithm requires the generation of random non-zero bytes, - * i.e. bytes in the range [0x01,0xff]. - * - * This algorithm is designed to comply with ANS X9.82 Part 1-2006 - * Section 9.2.1. This standard is not freely available, but most of - * the text appears to be shared with NIST SP 800-90, which can be - * downloaded from - * - * http://csrc.nist.gov/publications/nistpubs/800-90/SP800-90revised_March2007.pdf - * - * Where possible, references are given to both documents. In the - * case of any disagreement, ANS X9.82 takes priority over NIST SP - * 800-90. (In particular, note that some algorithms that are - * Approved by NIST SP 800-90 are not Approved by ANS X9.82.) - */ - -#include <stddef.h> -#include <stdint.h> -#include <ipxe/rbg.h> -#include <ipxe/random_nz.h> - -/** - * Get random non-zero bytes - * - * @v data Output buffer - * @v len Length of output buffer - * @ret rc Return status code - * - * This algorithm is designed to be isomorphic to the Simple Discard - * Method described in ANS X9.82 Part 1-2006 Section 9.2.1 (NIST SP - * 800-90 Section B.5.1.1). - */ -int get_random_nz ( void *data, size_t len ) { - uint8_t *bytes = data; - int rc; - - while ( len ) { - - /* Generate random byte */ - if ( ( rc = rbg_generate ( NULL, 0, 0, bytes, 1 ) ) != 0 ) - return rc; - - /* Move to next byte if this byte is acceptable */ - if ( *bytes != 0 ) { - bytes++; - len--; - } - } - - return 0; -} |