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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Crypto API support for AES block cipher
*
* Copyright 2026 Google LLC
*/
#include <crypto/aes.h>
#include <crypto/algapi.h>
#include <linux/module.h>
static_assert(__alignof__(struct aes_key) <= CRYPTO_MINALIGN);
static int crypto_aes_setkey(struct crypto_tfm *tfm, const u8 *in_key,
unsigned int key_len)
{
struct aes_key *key = crypto_tfm_ctx(tfm);
return aes_preparekey(key, in_key, key_len);
}
static void crypto_aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
const struct aes_key *key = crypto_tfm_ctx(tfm);
aes_encrypt(key, out, in);
}
static void crypto_aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
const struct aes_key *key = crypto_tfm_ctx(tfm);
aes_decrypt(key, out, in);
}
static struct crypto_alg alg = {
.cra_name = "aes",
.cra_driver_name = "aes-lib",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = AES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct aes_key),
.cra_module = THIS_MODULE,
.cra_u = { .cipher = { .cia_min_keysize = AES_MIN_KEY_SIZE,
.cia_max_keysize = AES_MAX_KEY_SIZE,
.cia_setkey = crypto_aes_setkey,
.cia_encrypt = crypto_aes_encrypt,
.cia_decrypt = crypto_aes_decrypt } }
};
static int __init crypto_aes_mod_init(void)
{
return crypto_register_alg(&alg);
}
module_init(crypto_aes_mod_init);
static void __exit crypto_aes_mod_exit(void)
{
crypto_unregister_alg(&alg);
}
module_exit(crypto_aes_mod_exit);
MODULE_DESCRIPTION("Crypto API support for AES block cipher");
MODULE_LICENSE("GPL");
MODULE_ALIAS_CRYPTO("aes");
MODULE_ALIAS_CRYPTO("aes-lib");
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