diff options
| author | Michael Brown <mcb30@ipxe.org> | 2012-03-13 04:41:49 +0000 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2012-03-13 15:58:04 +0000 |
| commit | ffb6d6be6dc8b0b7f144ed7f6d40b537b4480295 (patch) | |
| tree | 8753dd907bfa7be39366434cc2ea1ec64a6e5c76 | |
| parent | 554627c960def1adbf909e40126aefc0eed49529 (diff) | |
| download | ipxe-ffb6d6be6dc8b0b7f144ed7f6d40b537b4480295.tar.gz | |
[rng] Remove obsolete (and unfinished) get_random_bytes() function
Signed-off-by: Michael Brown <mcb30@ipxe.org>
| -rw-r--r-- | src/crypto/crandom.c | 55 | ||||
| -rw-r--r-- | src/include/ipxe/crypto.h | 2 |
2 files changed, 0 insertions, 57 deletions
diff --git a/src/crypto/crandom.c b/src/crypto/crandom.c deleted file mode 100644 index 1886f9b7e..000000000 --- a/src/crypto/crandom.c +++ /dev/null @@ -1,55 +0,0 @@ -/* - * Copyright (c) 2009 Joshua Oreman <oremanj@rwcr.net>. - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -FILE_LICENCE ( GPL2_OR_LATER ); - -/** @file - * - * Cryptographically strong random number generator - * - * Currently the cryptographic part is not implemented, and this just - * uses random(). - */ - -#include <ipxe/crypto.h> -#include <stdlib.h> - -/** - * Get cryptographically strong random bytes - * - * @v buf Buffer in which to store random bytes - * @v len Number of random bytes to generate - * - * @b WARNING: This function is currently underimplemented, and does - * not give numbers any stronger than random()! - */ -void get_random_bytes ( void *buf, size_t len ) -{ - u8 *bufp = buf; - - /* - * Somewhat arbitrarily, choose the 0x00FF0000-masked byte - * returned by random() as having good entropy. PRNGs often - * don't provide good entropy in lower bits, and the top byte - * might show a pattern because of sign issues. - */ - - while ( len-- ) { - *bufp++ = ( random() >> 16 ) & 0xFF; - } -} diff --git a/src/include/ipxe/crypto.h b/src/include/ipxe/crypto.h index 9383c076c..7c21e96e9 100644 --- a/src/include/ipxe/crypto.h +++ b/src/include/ipxe/crypto.h @@ -151,6 +151,4 @@ extern struct digest_algorithm digest_null; extern struct cipher_algorithm cipher_null; extern struct pubkey_algorithm pubkey_null; -void get_random_bytes ( void *buf, size_t len ); - #endif /* _IPXE_CRYPTO_H */ |