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/*
* 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., 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
*
* Null crypto algorithm
*/
#include <string.h>
#include <ipxe/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,
};
static int pubkey_null_init ( void *ctx __unused, const void *key __unused,
size_t key_len __unused ) {
return 0;
}
static size_t pubkey_null_max_len ( void *ctx __unused ) {
return 0;
}
static int pubkey_null_encrypt ( void *ctx __unused,
const void *plaintext __unused,
size_t plaintext_len __unused,
void *ciphertext __unused ) {
return 0;
}
static int pubkey_null_decrypt ( void *ctx __unused,
const void *ciphertext __unused,
size_t ciphertext_len __unused,
void *plaintext __unused ) {
return 0;
}
static int pubkey_null_sign ( void *ctx __unused,
struct digest_algorithm *digest __unused,
const void *value __unused,
void *signature __unused ) {
return 0;
}
static int pubkey_null_verify ( void *ctx __unused,
struct digest_algorithm *digest __unused,
const void *value __unused,
const void *signature __unused ,
size_t signature_len __unused ) {
return 0;
}
static void pubkey_null_final ( void *ctx __unused ) {
/* Do nothing */
}
struct pubkey_algorithm pubkey_null = {
.name = "null",
.ctxsize = 0,
.init = pubkey_null_init,
.max_len = pubkey_null_max_len,
.encrypt = pubkey_null_encrypt,
.decrypt = pubkey_null_decrypt,
.sign = pubkey_null_sign,
.verify = pubkey_null_verify,
.final = pubkey_null_final,
};
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