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119 lines
3.8 KiB
C
119 lines
3.8 KiB
C
/* ocb-aes128.c
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Copyright (C) 2022 Niels Möller
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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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#if HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "ocb.h"
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void
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ocb_aes128_set_encrypt_key (struct ocb_aes128_encrypt_key *ocb_key, const uint8_t *key)
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{
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aes128_set_encrypt_key (&ocb_key->encrypt, key);
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ocb_set_key (&ocb_key->ocb, &ocb_key->encrypt, (nettle_cipher_func *) aes128_encrypt);
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}
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void
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ocb_aes128_set_decrypt_key (struct ocb_aes128_encrypt_key *ocb_key, struct aes128_ctx *decrypt,
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const uint8_t *key)
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{
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ocb_aes128_set_encrypt_key (ocb_key, key);
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aes128_invert_key (decrypt, &ocb_key->encrypt);
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}
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void
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ocb_aes128_set_nonce (struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key,
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size_t tag_length, size_t nonce_length, const uint8_t *nonce)
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{
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ocb_set_nonce (ctx, &key->encrypt, (nettle_cipher_func *) aes128_encrypt,
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tag_length, nonce_length, nonce);
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}
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void
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ocb_aes128_update (struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key,
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size_t length, const uint8_t *data)
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{
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ocb_update (ctx, &key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt,
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length, data);
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}
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void
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ocb_aes128_encrypt(struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key,
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size_t length, uint8_t *dst, const uint8_t *src)
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{
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ocb_encrypt (ctx, &key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt,
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length, dst, src);
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}
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void
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ocb_aes128_decrypt(struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key,
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const struct aes128_ctx *decrypt,
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size_t length, uint8_t *dst, const uint8_t *src)
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{
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ocb_decrypt (ctx, &key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt,
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decrypt, (nettle_cipher_func *) aes128_decrypt,
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length, dst, src);
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}
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void
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ocb_aes128_digest(struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key,
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size_t length, uint8_t *digest)
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{
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ocb_digest (ctx, &key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt,
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length, digest);
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}
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void
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ocb_aes128_encrypt_message (const struct ocb_aes128_encrypt_key *key,
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size_t nlength, const uint8_t *nonce,
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size_t alength, const uint8_t *adata,
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size_t tlength,
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size_t clength, uint8_t *dst, const uint8_t *src)
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{
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ocb_encrypt_message (&key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt,
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nlength, nonce, alength, adata, tlength, clength, dst, src);
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}
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int
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ocb_aes128_decrypt_message (const struct ocb_aes128_encrypt_key *key,
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const struct aes128_ctx *decrypt,
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size_t nlength, const uint8_t *nonce,
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size_t alength, const uint8_t *adata,
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size_t tlength,
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size_t mlength, uint8_t *dst, const uint8_t *src)
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{
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return ocb_decrypt_message (&key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt,
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&decrypt, (nettle_cipher_func *) aes128_decrypt,
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nlength, nonce, alength, adata,
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tlength, mlength, dst, src);
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}
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