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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>
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <asm/neon.h>
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#include <asm/simd.h>
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#include <crypto/algapi.h>
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#include <crypto/sm4.h>
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#include <crypto/internal/simd.h>
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#include <linux/module.h>
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#include <linux/cpufeature.h>
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#include <linux/types.h>
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MODULE_ALIAS_CRYPTO("sm4");
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MODULE_ALIAS_CRYPTO("sm4-ce");
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MODULE_DESCRIPTION("SM4 symmetric cipher using ARMv8 Crypto Extensions");
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MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
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MODULE_LICENSE("GPL v2");
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asmlinkage void sm4_ce_do_crypt(const u32 *rk, void *out, const void *in);
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static int sm4_ce_setkey(struct crypto_tfm *tfm, const u8 *key,
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unsigned int key_len)
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{
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struct sm4_ctx *ctx = crypto_tfm_ctx(tfm);
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return sm4_expandkey(ctx, key, key_len);
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}
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static void sm4_ce_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
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{
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const struct sm4_ctx *ctx = crypto_tfm_ctx(tfm);
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if (!crypto_simd_usable()) {
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sm4_crypt_block(ctx->rkey_enc, out, in);
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} else {
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kernel_neon_begin();
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sm4_ce_do_crypt(ctx->rkey_enc, out, in);
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kernel_neon_end();
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}
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}
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static void sm4_ce_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
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{
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const struct sm4_ctx *ctx = crypto_tfm_ctx(tfm);
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if (!crypto_simd_usable()) {
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sm4_crypt_block(ctx->rkey_dec, out, in);
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} else {
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kernel_neon_begin();
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sm4_ce_do_crypt(ctx->rkey_dec, out, in);
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kernel_neon_end();
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}
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}
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static struct crypto_alg sm4_ce_alg = {
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.cra_name = "sm4",
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.cra_driver_name = "sm4-ce",
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.cra_priority = 300,
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.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
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.cra_blocksize = SM4_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct sm4_ctx),
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.cra_module = THIS_MODULE,
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.cra_u.cipher = {
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.cia_min_keysize = SM4_KEY_SIZE,
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.cia_max_keysize = SM4_KEY_SIZE,
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.cia_setkey = sm4_ce_setkey,
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.cia_encrypt = sm4_ce_encrypt,
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.cia_decrypt = sm4_ce_decrypt
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}
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};
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static int __init sm4_ce_mod_init(void)
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{
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return crypto_register_alg(&sm4_ce_alg);
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}
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static void __exit sm4_ce_mod_fini(void)
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{
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crypto_unregister_alg(&sm4_ce_alg);
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}
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module_cpu_feature_match(SM4, sm4_ce_mod_init);
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module_exit(sm4_ce_mod_fini);
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