3 * Galois counter mode using AES as the underlying cipher.
6 /* nettle, low-level cryptographics library
8 * Copyright (C) 2011 Niels Möller
10 * The nettle library is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or (at your
13 * option) any later version.
15 * The nettle library is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
18 * License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with the nettle library; see the file COPYING.LIB. If not, write to
22 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
33 gcm_aes_set_key(struct gcm_aes_ctx *ctx, unsigned length, const uint8_t *key)
35 GCM_SET_KEY(ctx, aes_set_encrypt_key, aes_encrypt, length, key);
39 gcm_aes_set_iv(struct gcm_aes_ctx *ctx,
40 unsigned length, const uint8_t *iv)
42 GCM_SET_IV(ctx, length, iv);
46 gcm_aes_update(struct gcm_aes_ctx *ctx, unsigned length, const uint8_t *data)
48 GCM_UPDATE(ctx, length, data);
52 gcm_aes_encrypt(struct gcm_aes_ctx *ctx,
53 unsigned length, uint8_t *dst, const uint8_t *src)
55 GCM_ENCRYPT(ctx, aes_encrypt, length, dst, src);
59 gcm_aes_decrypt(struct gcm_aes_ctx *ctx,
60 unsigned length, uint8_t *dst, const uint8_t *src)
62 GCM_DECRYPT(ctx, aes_encrypt, length, dst, src);
66 gcm_aes_digest(struct gcm_aes_ctx *ctx,
67 unsigned length, uint8_t *digest)
69 GCM_DIGEST(ctx, aes_encrypt, length, digest);