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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>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Scalar AES core transform
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*
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* Copyright (C) 2017 Linaro Ltd.
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* Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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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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#include "aes-cipher.h"
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EXPORT_SYMBOL_GPL(__aes_arm_encrypt);
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EXPORT_SYMBOL_GPL(__aes_arm_decrypt);
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static int aes_arm_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 crypto_aes_ctx *ctx = crypto_tfm_ctx(tfm);
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return aes_expandkey(ctx, in_key, key_len);
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}
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static void aes_arm_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
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{
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struct crypto_aes_ctx *ctx = crypto_tfm_ctx(tfm);
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int rounds = 6 + ctx->key_length / 4;
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__aes_arm_encrypt(ctx->key_enc, rounds, in, out);
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}
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static void aes_arm_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
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{
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struct crypto_aes_ctx *ctx = crypto_tfm_ctx(tfm);
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int rounds = 6 + ctx->key_length / 4;
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__aes_arm_decrypt(ctx->key_dec, rounds, in, out);
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}
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static struct crypto_alg aes_alg = {
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.cra_name = "aes",
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.cra_driver_name = "aes-arm",
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.cra_priority = 200,
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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 crypto_aes_ctx),
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.cra_module = THIS_MODULE,
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.cra_cipher.cia_min_keysize = AES_MIN_KEY_SIZE,
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.cra_cipher.cia_max_keysize = AES_MAX_KEY_SIZE,
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.cra_cipher.cia_setkey = aes_arm_setkey,
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.cra_cipher.cia_encrypt = aes_arm_encrypt,
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.cra_cipher.cia_decrypt = aes_arm_decrypt,
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#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
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.cra_alignmask = 3,
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#endif
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};
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static int __init aes_init(void)
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{
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return crypto_register_alg(&aes_alg);
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}
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static void __exit aes_fini(void)
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{
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crypto_unregister_alg(&aes_alg);
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}
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module_init(aes_init);
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module_exit(aes_fini);
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MODULE_DESCRIPTION("Scalar AES cipher for ARM");
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MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS_CRYPTO("aes");
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