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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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477309580d
Convert the x86 implementation of MORUS-640 to use the AEAD SIMD helpers, rather than hand-rolling the same functionality. This simplifies the code and also fixes the bug where the user-provided aead_request is modified. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* The MORUS-640 Authenticated-Encryption Algorithm
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* Common glue skeleton -- header file
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*
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* Copyright (c) 2016-2018 Ondrej Mosnacek <omosnacek@gmail.com>
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* Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved.
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*/
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#ifndef _CRYPTO_MORUS640_GLUE_H
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#define _CRYPTO_MORUS640_GLUE_H
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#include <linux/module.h>
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#include <linux/types.h>
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#include <crypto/algapi.h>
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#include <crypto/aead.h>
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#include <crypto/morus_common.h>
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#define MORUS640_WORD_SIZE 4
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#define MORUS640_BLOCK_SIZE (MORUS_BLOCK_WORDS * MORUS640_WORD_SIZE)
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struct morus640_block {
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u8 bytes[MORUS640_BLOCK_SIZE];
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};
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struct morus640_glue_ops {
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void (*init)(void *state, const void *key, const void *iv);
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void (*ad)(void *state, const void *data, unsigned int length);
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void (*enc)(void *state, const void *src, void *dst, unsigned int length);
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void (*dec)(void *state, const void *src, void *dst, unsigned int length);
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void (*enc_tail)(void *state, const void *src, void *dst, unsigned int length);
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void (*dec_tail)(void *state, const void *src, void *dst, unsigned int length);
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void (*final)(void *state, void *tag_xor, u64 assoclen, u64 cryptlen);
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};
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struct morus640_ctx {
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const struct morus640_glue_ops *ops;
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struct morus640_block key;
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};
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void crypto_morus640_glue_init_ops(struct crypto_aead *aead,
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const struct morus640_glue_ops *ops);
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int crypto_morus640_glue_setkey(struct crypto_aead *aead, const u8 *key,
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unsigned int keylen);
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int crypto_morus640_glue_setauthsize(struct crypto_aead *tfm,
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unsigned int authsize);
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int crypto_morus640_glue_encrypt(struct aead_request *req);
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int crypto_morus640_glue_decrypt(struct aead_request *req);
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#define MORUS640_DECLARE_ALG(id, driver_name, priority) \
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static const struct morus640_glue_ops crypto_morus640_##id##_ops = {\
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.init = crypto_morus640_##id##_init, \
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.ad = crypto_morus640_##id##_ad, \
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.enc = crypto_morus640_##id##_enc, \
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.enc_tail = crypto_morus640_##id##_enc_tail, \
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.dec = crypto_morus640_##id##_dec, \
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.dec_tail = crypto_morus640_##id##_dec_tail, \
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.final = crypto_morus640_##id##_final, \
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}; \
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\
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static int crypto_morus640_##id##_init_tfm(struct crypto_aead *tfm) \
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{ \
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crypto_morus640_glue_init_ops(tfm, &crypto_morus640_##id##_ops); \
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return 0; \
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} \
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\
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static void crypto_morus640_##id##_exit_tfm(struct crypto_aead *tfm) \
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{ \
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} \
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\
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static struct aead_alg crypto_morus640_##id##_alg = {\
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.setkey = crypto_morus640_glue_setkey, \
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.setauthsize = crypto_morus640_glue_setauthsize, \
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.encrypt = crypto_morus640_glue_encrypt, \
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.decrypt = crypto_morus640_glue_decrypt, \
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.init = crypto_morus640_##id##_init_tfm, \
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.exit = crypto_morus640_##id##_exit_tfm, \
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\
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.ivsize = MORUS_NONCE_SIZE, \
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.maxauthsize = MORUS_MAX_AUTH_SIZE, \
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.chunksize = MORUS640_BLOCK_SIZE, \
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\
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.base = { \
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.cra_flags = CRYPTO_ALG_INTERNAL, \
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.cra_blocksize = 1, \
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.cra_ctxsize = sizeof(struct morus640_ctx), \
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.cra_alignmask = 0, \
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.cra_priority = priority, \
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\
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.cra_name = "__morus640", \
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.cra_driver_name = "__"driver_name, \
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\
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.cra_module = THIS_MODULE, \
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} \
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}
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#endif /* _CRYPTO_MORUS640_GLUE_H */
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