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238 lines
6.6 KiB
C
238 lines
6.6 KiB
C
/* cmac.h
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CMAC mode, as specified in RFC4493
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Copyright (C) 2017 Red Hat, Inc.
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Contributed by Nikos Mavrogiannopoulos
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This file is part of GNU Nettle.
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GNU Nettle is free software: you can redistribute it and/or
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modify it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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or both in parallel, as here.
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GNU Nettle 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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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see http://www.gnu.org/licenses/.
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*/
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#ifndef NETTLE_CMAC_H_INCLUDED
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#define NETTLE_CMAC_H_INCLUDED
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#include "aes.h"
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#include "des.h"
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#include "nettle-types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define CMAC128_DIGEST_SIZE 16
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#define CMAC64_DIGEST_SIZE 8
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#define cmac128_set_key nettle_cmac128_set_key
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#define cmac128_init nettle_cmac128_init
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#define cmac128_update nettle_cmac128_update
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#define cmac128_digest nettle_cmac128_digest
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#define cmac_aes128_set_key nettle_cmac_aes128_set_key
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#define cmac_aes128_update nettle_cmac_aes128_update
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#define cmac_aes128_digest nettle_cmac_aes128_digest
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#define cmac_aes256_set_key nettle_cmac_aes256_set_key
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#define cmac_aes256_update nettle_cmac_aes256_update
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#define cmac_aes256_digest nettle_cmac_aes256_digest
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#define cmac64_set_key nettle_cmac64_set_key
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#define cmac64_init nettle_cmac64_init
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#define cmac64_update nettle_cmac64_update
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#define cmac64_digest nettle_cmac64_digest
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#define cmac_des3_set_key nettle_cmac_des3_set_key
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#define cmac_des3_update nettle_cmac_des3_update
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#define cmac_des3_digest nettle_cmac_des3_digest
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struct cmac128_key
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{
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union nettle_block16 K1;
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union nettle_block16 K2;
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};
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struct cmac128_ctx
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{
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/* MAC state */
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union nettle_block16 X;
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/* Block buffer */
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union nettle_block16 block;
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size_t index;
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};
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struct cmac64_key
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{
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union nettle_block8 K1;
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union nettle_block8 K2;
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};
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struct cmac64_ctx
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{
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/* MAC state */
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union nettle_block8 X;
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/* Block buffer */
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union nettle_block8 block;
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size_t index;
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};
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void
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cmac128_set_key(struct cmac128_key *key, const void *cipher,
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nettle_cipher_func *encrypt);
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void
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cmac128_init(struct cmac128_ctx *ctx);
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void
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cmac128_update(struct cmac128_ctx *ctx, const void *cipher,
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nettle_cipher_func *encrypt,
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size_t msg_len, const uint8_t *msg);
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void
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cmac128_digest(struct cmac128_ctx *ctx, const struct cmac128_key *key,
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const void *cipher, nettle_cipher_func *encrypt,
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unsigned length, uint8_t *digest);
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#define CMAC128_CTX(type) \
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{ struct cmac128_key key; struct cmac128_ctx ctx; type cipher; }
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/* NOTE: Avoid using NULL, as we don't include anything defining it. */
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#define CMAC128_SET_KEY(self, set_key, encrypt, cmac_key) \
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do { \
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(set_key)(&(self)->cipher, (cmac_key)); \
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if (0) (encrypt)(&(self)->cipher, ~(size_t) 0, \
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(uint8_t *) 0, (const uint8_t *) 0); \
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cmac128_set_key(&(self)->key, &(self)->cipher, \
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(nettle_cipher_func *) (encrypt)); \
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cmac128_init(&(self)->ctx); \
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} while (0)
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#define CMAC128_UPDATE(self, encrypt, length, src) \
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(0 ? (encrypt)(&(self)->cipher, ~(size_t) 0, \
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(uint8_t *) 0, (const uint8_t *) 0) \
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: cmac128_update(&(self)->ctx, &(self)->cipher, \
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(nettle_cipher_func *)encrypt, \
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(length), (src)))
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#define CMAC128_DIGEST(self, encrypt, length, digest) \
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(0 ? (encrypt)(&(self)->cipher, ~(size_t) 0, \
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(uint8_t *) 0, (const uint8_t *) 0) \
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: cmac128_digest(&(self)->ctx, &(self)->key, \
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&(self)->cipher, \
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(nettle_cipher_func *) (encrypt), \
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(length), (digest)))
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void
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cmac64_set_key(struct cmac64_key *key, const void *cipher,
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nettle_cipher_func *encrypt);
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void
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cmac64_init(struct cmac64_ctx *ctx);
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void
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cmac64_update(struct cmac64_ctx *ctx, const void *cipher,
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nettle_cipher_func *encrypt,
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size_t msg_len, const uint8_t *msg);
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void
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cmac64_digest(struct cmac64_ctx *ctx, const struct cmac64_key *key,
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const void *cipher, nettle_cipher_func *encrypt,
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unsigned length, uint8_t *digest);
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#define CMAC64_CTX(type) \
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{ struct cmac64_key key; struct cmac64_ctx ctx; type cipher; }
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/* NOTE: Avoid using NULL, as we don't include anything defining it. */
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#define CMAC64_SET_KEY(self, set_key, encrypt, cmac_key) \
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do { \
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(set_key)(&(self)->cipher, (cmac_key)); \
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if (0) (encrypt)(&(self)->cipher, ~(size_t) 0, \
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(uint8_t *) 0, (const uint8_t *) 0); \
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cmac64_set_key(&(self)->key, &(self)->cipher, \
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(nettle_cipher_func *) (encrypt)); \
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cmac64_init(&(self)->ctx); \
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} while (0)
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#define CMAC64_UPDATE(self, encrypt, length, src) \
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(0 ? (encrypt)(&(self)->cipher, ~(size_t) 0, \
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(uint8_t *) 0, (const uint8_t *) 0) \
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: cmac64_update(&(self)->ctx, &(self)->cipher, \
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(nettle_cipher_func *)encrypt, \
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(length), (src)))
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#define CMAC64_DIGEST(self, encrypt, length, digest) \
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(0 ? (encrypt)(&(self)->cipher, ~(size_t) 0, \
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(uint8_t *) 0, (const uint8_t *) 0) \
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: cmac64_digest(&(self)->ctx, &(self)->key, \
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&(self)->cipher, \
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(nettle_cipher_func *) (encrypt), \
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(length), (digest)))
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struct cmac_aes128_ctx CMAC128_CTX(struct aes128_ctx);
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void
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cmac_aes128_set_key(struct cmac_aes128_ctx *ctx, const uint8_t *key);
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void
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cmac_aes128_update(struct cmac_aes128_ctx *ctx,
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size_t length, const uint8_t *data);
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void
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cmac_aes128_digest(struct cmac_aes128_ctx *ctx,
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size_t length, uint8_t *digest);
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struct cmac_aes256_ctx CMAC128_CTX(struct aes256_ctx);
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void
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cmac_aes256_set_key(struct cmac_aes256_ctx *ctx, const uint8_t *key);
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void
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cmac_aes256_update(struct cmac_aes256_ctx *ctx,
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size_t length, const uint8_t *data);
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void
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cmac_aes256_digest(struct cmac_aes256_ctx *ctx,
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size_t length, uint8_t *digest);
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struct cmac_des3_ctx CMAC64_CTX(struct des3_ctx);
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void
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cmac_des3_set_key(struct cmac_des3_ctx *ctx, const uint8_t *key);
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void
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cmac_des3_update(struct cmac_des3_ctx *ctx,
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size_t length, const uint8_t *data);
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void
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cmac_des3_digest(struct cmac_des3_ctx *ctx,
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size_t length, uint8_t *digest);
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#ifdef __cplusplus
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}
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#endif
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#endif /* CMAC_H_INCLUDED */
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