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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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a248447427
Now that the AES library's performance has been improved, replace aes_generic.c with a new file aes.c which wraps the AES library. In preparation for making the AES library actually utilize the kernel's existing architecture-optimized AES code including AES instructions, set the driver name to "aes-lib" instead of "aes-generic". This mirrors what's been done for the hash algorithms. Update testmgr.c accordingly. Since this removes the crypto_aes_set_key() helper function, add temporary replacements for it to arch/arm/crypto/aes-cipher-glue.c and arch/arm64/crypto/aes-cipher-glue.c. This is temporary, as that code will be migrated into lib/crypto/ in later commits. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20260112192035.10427-10-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Crypto API support for AES block cipher
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*
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* Copyright 2026 Google LLC
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*/
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#include <crypto/aes.h>
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#include <crypto/algapi.h>
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#include <linux/module.h>
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static_assert(__alignof__(struct aes_key) <= CRYPTO_MINALIGN);
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static int crypto_aes_setkey(struct crypto_tfm *tfm, const u8 *in_key,
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unsigned int key_len)
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{
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struct aes_key *key = crypto_tfm_ctx(tfm);
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return aes_preparekey(key, in_key, key_len);
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}
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static void crypto_aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
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{
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const struct aes_key *key = crypto_tfm_ctx(tfm);
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aes_encrypt(key, out, in);
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}
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static void crypto_aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
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{
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const struct aes_key *key = crypto_tfm_ctx(tfm);
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aes_decrypt(key, out, in);
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}
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static struct crypto_alg alg = {
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.cra_name = "aes",
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.cra_driver_name = "aes-lib",
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.cra_priority = 100,
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.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct aes_key),
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.cra_module = THIS_MODULE,
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.cra_u = { .cipher = { .cia_min_keysize = AES_MIN_KEY_SIZE,
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.cia_max_keysize = AES_MAX_KEY_SIZE,
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.cia_setkey = crypto_aes_setkey,
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.cia_encrypt = crypto_aes_encrypt,
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.cia_decrypt = crypto_aes_decrypt } }
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};
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static int __init crypto_aes_mod_init(void)
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{
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return crypto_register_alg(&alg);
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}
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module_init(crypto_aes_mod_init);
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static void __exit crypto_aes_mod_exit(void)
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{
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crypto_unregister_alg(&alg);
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}
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module_exit(crypto_aes_mod_exit);
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MODULE_DESCRIPTION("Crypto API support for AES block cipher");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS_CRYPTO("aes");
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MODULE_ALIAS_CRYPTO("aes-lib");
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