diff options
Diffstat (limited to 'arch/arm64/crypto/sha3-ce-glue.c')
| -rw-r--r-- | arch/arm64/crypto/sha3-ce-glue.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/arch/arm64/crypto/sha3-ce-glue.c b/arch/arm64/crypto/sha3-ce-glue.c deleted file mode 100644 index 5662c3ac49e9..000000000000 --- a/arch/arm64/crypto/sha3-ce-glue.c +++ /dev/null @@ -1,166 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * sha3-ce-glue.c - core SHA-3 transform using v8.2 Crypto Extensions - * - * Copyright (C) 2018 Linaro Ltd <ard.biesheuvel@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <asm/hwcap.h> -#include <asm/neon.h> -#include <asm/simd.h> -#include <linux/unaligned.h> -#include <crypto/internal/hash.h> -#include <crypto/internal/simd.h> -#include <crypto/sha3.h> -#include <linux/cpufeature.h> -#include <linux/crypto.h> -#include <linux/module.h> - -MODULE_DESCRIPTION("SHA3 secure hash using ARMv8 Crypto Extensions"); -MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS_CRYPTO("sha3-224"); -MODULE_ALIAS_CRYPTO("sha3-256"); -MODULE_ALIAS_CRYPTO("sha3-384"); -MODULE_ALIAS_CRYPTO("sha3-512"); - -asmlinkage int sha3_ce_transform(u64 *st, const u8 *data, int blocks, - int md_len); - -static int sha3_update(struct shash_desc *desc, const u8 *data, - unsigned int len) -{ - struct sha3_state *sctx = shash_desc_ctx(desc); - unsigned int digest_size = crypto_shash_digestsize(desc->tfm); - - if (!crypto_simd_usable()) - return crypto_sha3_update(desc, data, len); - - if ((sctx->partial + len) >= sctx->rsiz) { - int blocks; - - if (sctx->partial) { - int p = sctx->rsiz - sctx->partial; - - memcpy(sctx->buf + sctx->partial, data, p); - kernel_neon_begin(); - sha3_ce_transform(sctx->st, sctx->buf, 1, digest_size); - kernel_neon_end(); - - data += p; - len -= p; - sctx->partial = 0; - } - - blocks = len / sctx->rsiz; - len %= sctx->rsiz; - - while (blocks) { - int rem; - - kernel_neon_begin(); - rem = sha3_ce_transform(sctx->st, data, blocks, - digest_size); - kernel_neon_end(); - data += (blocks - rem) * sctx->rsiz; - blocks = rem; - } - } - - if (len) { - memcpy(sctx->buf + sctx->partial, data, len); - sctx->partial += len; - } - return 0; -} - -static int sha3_final(struct shash_desc *desc, u8 *out) -{ - struct sha3_state *sctx = shash_desc_ctx(desc); - unsigned int digest_size = crypto_shash_digestsize(desc->tfm); - __le64 *digest = (__le64 *)out; - int i; - - if (!crypto_simd_usable()) - return crypto_sha3_final(desc, out); - - sctx->buf[sctx->partial++] = 0x06; - memset(sctx->buf + sctx->partial, 0, sctx->rsiz - sctx->partial); - sctx->buf[sctx->rsiz - 1] |= 0x80; - - kernel_neon_begin(); - sha3_ce_transform(sctx->st, sctx->buf, 1, digest_size); - kernel_neon_end(); - - for (i = 0; i < digest_size / 8; i++) - put_unaligned_le64(sctx->st[i], digest++); - - if (digest_size & 4) - put_unaligned_le32(sctx->st[i], (__le32 *)digest); - - memzero_explicit(sctx, sizeof(*sctx)); - return 0; -} - -static struct shash_alg algs[] = { { - .digestsize = SHA3_224_DIGEST_SIZE, - .init = crypto_sha3_init, - .update = sha3_update, - .final = sha3_final, - .descsize = sizeof(struct sha3_state), - .base.cra_name = "sha3-224", - .base.cra_driver_name = "sha3-224-ce", - .base.cra_blocksize = SHA3_224_BLOCK_SIZE, - .base.cra_module = THIS_MODULE, - .base.cra_priority = 200, -}, { - .digestsize = SHA3_256_DIGEST_SIZE, - .init = crypto_sha3_init, - .update = sha3_update, - .final = sha3_final, - .descsize = sizeof(struct sha3_state), - .base.cra_name = "sha3-256", - .base.cra_driver_name = "sha3-256-ce", - .base.cra_blocksize = SHA3_256_BLOCK_SIZE, - .base.cra_module = THIS_MODULE, - .base.cra_priority = 200, -}, { - .digestsize = SHA3_384_DIGEST_SIZE, - .init = crypto_sha3_init, - .update = sha3_update, - .final = sha3_final, - .descsize = sizeof(struct sha3_state), - .base.cra_name = "sha3-384", - .base.cra_driver_name = "sha3-384-ce", - .base.cra_blocksize = SHA3_384_BLOCK_SIZE, - .base.cra_module = THIS_MODULE, - .base.cra_priority = 200, -}, { - .digestsize = SHA3_512_DIGEST_SIZE, - .init = crypto_sha3_init, - .update = sha3_update, - .final = sha3_final, - .descsize = sizeof(struct sha3_state), - .base.cra_name = "sha3-512", - .base.cra_driver_name = "sha3-512-ce", - .base.cra_blocksize = SHA3_512_BLOCK_SIZE, - .base.cra_module = THIS_MODULE, - .base.cra_priority = 200, -} }; - -static int __init sha3_neon_mod_init(void) -{ - return crypto_register_shashes(algs, ARRAY_SIZE(algs)); -} - -static void __exit sha3_neon_mod_fini(void) -{ - crypto_unregister_shashes(algs, ARRAY_SIZE(algs)); -} - -module_cpu_feature_match(SHA3, sha3_neon_mod_init); -module_exit(sha3_neon_mod_fini); |