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In preparation of adding support for the SIMD based arm64 implementation of arm64, which requires a fallback to non-SIMD code when invoked in certain contexts, expose the generic SM4 encrypt and decrypt routines to other drivers. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
31 lines
754 B
C
31 lines
754 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Common values for the SM4 algorithm
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* Copyright (C) 2018 ARM Limited or its affiliates.
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*/
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#ifndef _CRYPTO_SM4_H
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#define _CRYPTO_SM4_H
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#include <linux/types.h>
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#include <linux/crypto.h>
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#define SM4_KEY_SIZE 16
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#define SM4_BLOCK_SIZE 16
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#define SM4_RKEY_WORDS 32
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struct crypto_sm4_ctx {
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u32 rkey_enc[SM4_RKEY_WORDS];
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u32 rkey_dec[SM4_RKEY_WORDS];
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};
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int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
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unsigned int key_len);
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int crypto_sm4_expand_key(struct crypto_sm4_ctx *ctx, const u8 *in_key,
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unsigned int key_len);
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void crypto_sm4_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
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void crypto_sm4_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
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#endif
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