mirror of
https://gitlab.com/cryptsetup/cryptsetup.git
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91d8ab7f20
Aria cipher is similar to AES and is supported in Linux kernel crypto API in recent releases. This patch just add support for internal info table. (This will cause that it is used also for keyslot encryption if specified as a cipher argument.)
91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/*
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* Linux kernel cipher generic utilities
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*
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* Copyright (C) 2018-2023 Red Hat, Inc. All rights reserved.
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* Copyright (C) 2018-2023 Milan Broz
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*
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* This file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this file; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <string.h>
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#include <stdbool.h>
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#include <errno.h>
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#include "crypto_backend.h"
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struct cipher_alg {
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const char *name;
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const char *mode;
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int blocksize;
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bool wrapped_key;
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};
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static const struct cipher_alg cipher_algs[] = {
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{ "cipher_null", NULL, 16, false },
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{ "aes", NULL, 16, false },
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{ "serpent", NULL, 16, false },
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{ "twofish", NULL, 16, false },
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{ "anubis", NULL, 16, false },
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{ "blowfish", NULL, 8, false },
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{ "camellia", NULL, 16, false },
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{ "cast5", NULL, 8, false },
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{ "cast6", NULL, 16, false },
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{ "des", NULL, 8, false },
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{ "des3_ede", NULL, 8, false },
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{ "khazad", NULL, 8, false },
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{ "seed", NULL, 16, false },
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{ "tea", NULL, 8, false },
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{ "xtea", NULL, 8, false },
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{ "paes", NULL, 16, true }, /* protected AES, s390 wrapped key scheme */
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{ "xchacha12,aes", "adiantum", 32, false },
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{ "xchacha20,aes", "adiantum", 32, false },
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{ "sm4", NULL, 16, false },
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{ "aria", NULL, 16, false },
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{ NULL, NULL, 0, false }
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};
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static const struct cipher_alg *_get_alg(const char *name, const char *mode)
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{
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int i = 0;
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while (name && cipher_algs[i].name) {
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if (!strcasecmp(name, cipher_algs[i].name))
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if (!mode || !cipher_algs[i].mode ||
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!strncasecmp(mode, cipher_algs[i].mode, strlen(cipher_algs[i].mode)))
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return &cipher_algs[i];
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i++;
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}
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return NULL;
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}
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int crypt_cipher_ivsize(const char *name, const char *mode)
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{
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const struct cipher_alg *ca = _get_alg(name, mode);
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if (!ca)
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return -EINVAL;
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if (mode && !strcasecmp(mode, "ecb"))
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return 0;
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return ca->blocksize;
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}
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int crypt_cipher_wrapped_key(const char *name, const char *mode)
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{
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const struct cipher_alg *ca = _get_alg(name, mode);
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return ca ? (int)ca->wrapped_key : 0;
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}
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