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14386d4713
The helper crypto_tfm_ctx is only used by the Crypto API algorithm code and should really be in algapi.h. However, for historical reasons many files relied on it to be in crypto.h. This patch changes those files to use algapi.h instead in prepartion for a move. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
68 lines
1.8 KiB
C
68 lines
1.8 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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asmlinkage void __aes_arm_encrypt(u32 *rk, int rounds, const u8 *in, u8 *out);
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asmlinkage void __aes_arm_decrypt(u32 *rk, int rounds, const u8 *in, u8 *out);
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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 = crypto_aes_set_key,
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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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