| /* |
| * Copyright (C) 2007 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., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| FILE_LICENCE ( GPL2_OR_LATER ); |
| |
| /** |
| * @file |
| * |
| * Null crypto algorithm |
| */ |
| |
| #include <string.h> |
| #include <gpxe/crypto.h> |
| |
| static void digest_null_init ( void *ctx __unused ) { |
| /* Do nothing */ |
| } |
| |
| static void digest_null_update ( void *ctx __unused, const void *src __unused, |
| size_t len __unused ) { |
| /* Do nothing */ |
| } |
| |
| static void digest_null_final ( void *ctx __unused, void *out __unused ) { |
| /* Do nothing */ |
| } |
| |
| struct digest_algorithm digest_null = { |
| .name = "null", |
| .ctxsize = 0, |
| .blocksize = 1, |
| .digestsize = 0, |
| .init = digest_null_init, |
| .update = digest_null_update, |
| .final = digest_null_final, |
| }; |
| |
| static int cipher_null_setkey ( void *ctx __unused, const void *key __unused, |
| size_t keylen __unused ) { |
| /* Do nothing */ |
| return 0; |
| } |
| |
| static void cipher_null_setiv ( void *ctx __unused, |
| const void *iv __unused ) { |
| /* Do nothing */ |
| } |
| |
| static void cipher_null_encrypt ( void *ctx __unused, const void *src, |
| void *dst, size_t len ) { |
| memcpy ( dst, src, len ); |
| } |
| |
| static void cipher_null_decrypt ( void *ctx __unused, const void *src, |
| void *dst, size_t len ) { |
| memcpy ( dst, src, len ); |
| } |
| |
| struct cipher_algorithm cipher_null = { |
| .name = "null", |
| .ctxsize = 0, |
| .blocksize = 1, |
| .setkey = cipher_null_setkey, |
| .setiv = cipher_null_setiv, |
| .encrypt = cipher_null_encrypt, |
| .decrypt = cipher_null_decrypt, |
| }; |
| |
| struct pubkey_algorithm pubkey_null = { |
| .name = "null", |
| .ctxsize = 0, |
| }; |