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Diffstat (limited to 'ocb-aes128.c')
| -rw-r--r-- | ocb-aes128.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/ocb-aes128.c b/ocb-aes128.c new file mode 100644 index 00000000..c72ada2c --- /dev/null +++ b/ocb-aes128.c @@ -0,0 +1,118 @@ +/* ocb-aes128.c + + Copyright (C) 2022 Niels Möller + + This file is part of GNU Nettle. + + GNU Nettle is free software: you can redistribute it and/or + modify it under the terms of either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at your + option) any later version. + + or both in parallel, as here. + + GNU Nettle 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 copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see http://www.gnu.org/licenses/. +*/ + +#if HAVE_CONFIG_H +# include "config.h" +#endif + +#include "ocb.h" + +void +ocb_aes128_set_encrypt_key (struct ocb_aes128_encrypt_key *ocb_key, const uint8_t *key) +{ + aes128_set_encrypt_key (&ocb_key->encrypt, key); + ocb_set_key (&ocb_key->ocb, &ocb_key->encrypt, (nettle_cipher_func *) aes128_encrypt); +} + +void +ocb_aes128_set_decrypt_key (struct ocb_aes128_encrypt_key *ocb_key, struct aes128_ctx *decrypt, + const uint8_t *key) +{ + ocb_aes128_set_encrypt_key (ocb_key, key); + aes128_invert_key (decrypt, &ocb_key->encrypt); +} + +void +ocb_aes128_set_nonce (struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key, + size_t tag_length, size_t nonce_length, const uint8_t *nonce) +{ + ocb_set_nonce (ctx, &key->encrypt, (nettle_cipher_func *) aes128_encrypt, + tag_length, nonce_length, nonce); +} + +void +ocb_aes128_update (struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key, + size_t length, const uint8_t *data) +{ + ocb_update (ctx, &key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt, + length, data); +} + +void +ocb_aes128_encrypt(struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key, + size_t length, uint8_t *dst, const uint8_t *src) +{ + ocb_encrypt (ctx, &key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt, + length, dst, src); +} + +void +ocb_aes128_decrypt(struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key, + const struct aes128_ctx *decrypt, + size_t length, uint8_t *dst, const uint8_t *src) +{ + ocb_decrypt (ctx, &key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt, + decrypt, (nettle_cipher_func *) aes128_decrypt, + length, dst, src); +} + +void +ocb_aes128_digest(struct ocb_ctx *ctx, const struct ocb_aes128_encrypt_key *key, + size_t length, uint8_t *digest) +{ + ocb_digest (ctx, &key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt, + length, digest); +} + +void +ocb_aes128_encrypt_message (const struct ocb_aes128_encrypt_key *key, + size_t nlength, const uint8_t *nonce, + size_t alength, const uint8_t *adata, + size_t tlength, + size_t clength, uint8_t *dst, const uint8_t *src) +{ + ocb_encrypt_message (&key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt, + nlength, nonce, alength, adata, tlength, clength, dst, src); +} + +int +ocb_aes128_decrypt_message (const struct ocb_aes128_encrypt_key *key, + const struct aes128_ctx *decrypt, + size_t nlength, const uint8_t *nonce, + size_t alength, const uint8_t *adata, + size_t tlength, + size_t mlength, uint8_t *dst, const uint8_t *src) +{ + return ocb_decrypt_message (&key->ocb, &key->encrypt, (nettle_cipher_func *) aes128_encrypt, + &decrypt, (nettle_cipher_func *) aes128_decrypt, + nlength, nonce, alength, adata, + tlength, mlength, dst, src); +} |