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73 lines
2.0 KiB
73 lines
2.0 KiB
// 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 <[email protected]> |
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*/ |
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#include <crypto/aes.h> |
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#include <linux/crypto.h> |
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#include <linux/module.h> |
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MODULE_ALIAS_CRYPTO("ecb(aes)"); |
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MODULE_ALIAS_CRYPTO("cbc(aes)"); |
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MODULE_ALIAS_CRYPTO("ctr(aes)"); |
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MODULE_ALIAS_CRYPTO("xts(aes)"); |
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MODULE_ALIAS_CRYPTO("cts(cbc(aes))"); |
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MODULE_ALIAS_CRYPTO("essiv(cbc(aes),sha256)"); |
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MODULE_ALIAS_CRYPTO("cmac(aes)"); |
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MODULE_ALIAS_CRYPTO("xcbc(aes)"); |
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MODULE_ALIAS_CRYPTO("cbcmac(aes)"); |
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asmlinkage void __aes_arm64_encrypt(u32 *rk, u8 *out, const u8 *in, int rounds); |
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asmlinkage void __aes_arm64_decrypt(u32 *rk, u8 *out, const u8 *in, int rounds); |
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static void aes_arm64_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_arm64_encrypt(ctx->key_enc, out, in, rounds); |
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} |
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static void aes_arm64_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_arm64_decrypt(ctx->key_dec, out, in, rounds); |
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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-arm64", |
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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_arm64_encrypt, |
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.cra_cipher.cia_decrypt = aes_arm64_decrypt |
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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 arm64"); |
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MODULE_AUTHOR("Ard Biesheuvel <[email protected]>"); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_ALIAS_CRYPTO("aes");
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