diff options
Diffstat (limited to 'include/crypto/sm3_base.h')
| -rw-r--r-- | include/crypto/sm3_base.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/include/crypto/sm3_base.h b/include/crypto/sm3_base.h deleted file mode 100644 index b33ed39c2bce..000000000000 --- a/include/crypto/sm3_base.h +++ /dev/null @@ -1,112 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * sm3_base.h - core logic for SM3 implementations - * - * Copyright (C) 2017 ARM Limited or its affiliates. - * Written by Gilad Ben-Yossef <gilad@benyossef.com> - */ - -#ifndef _CRYPTO_SM3_BASE_H -#define _CRYPTO_SM3_BASE_H - -#include <crypto/internal/hash.h> -#include <crypto/sm3.h> -#include <linux/crypto.h> -#include <linux/module.h> -#include <linux/string.h> -#include <linux/unaligned.h> - -typedef void (sm3_block_fn)(struct sm3_state *sst, u8 const *src, int blocks); - -static inline int sm3_base_init(struct shash_desc *desc) -{ - struct sm3_state *sctx = shash_desc_ctx(desc); - - sctx->state[0] = SM3_IVA; - sctx->state[1] = SM3_IVB; - sctx->state[2] = SM3_IVC; - sctx->state[3] = SM3_IVD; - sctx->state[4] = SM3_IVE; - sctx->state[5] = SM3_IVF; - sctx->state[6] = SM3_IVG; - sctx->state[7] = SM3_IVH; - sctx->count = 0; - - return 0; -} - -static inline int sm3_base_do_update(struct shash_desc *desc, - const u8 *data, - unsigned int len, - sm3_block_fn *block_fn) -{ - struct sm3_state *sctx = shash_desc_ctx(desc); - unsigned int partial = sctx->count % SM3_BLOCK_SIZE; - - sctx->count += len; - - if (unlikely((partial + len) >= SM3_BLOCK_SIZE)) { - int blocks; - - if (partial) { - int p = SM3_BLOCK_SIZE - partial; - - memcpy(sctx->buffer + partial, data, p); - data += p; - len -= p; - - block_fn(sctx, sctx->buffer, 1); - } - - blocks = len / SM3_BLOCK_SIZE; - len %= SM3_BLOCK_SIZE; - - if (blocks) { - block_fn(sctx, data, blocks); - data += blocks * SM3_BLOCK_SIZE; - } - partial = 0; - } - if (len) - memcpy(sctx->buffer + partial, data, len); - - return 0; -} - -static inline int sm3_base_do_finalize(struct shash_desc *desc, - sm3_block_fn *block_fn) -{ - const int bit_offset = SM3_BLOCK_SIZE - sizeof(__be64); - struct sm3_state *sctx = shash_desc_ctx(desc); - __be64 *bits = (__be64 *)(sctx->buffer + bit_offset); - unsigned int partial = sctx->count % SM3_BLOCK_SIZE; - - sctx->buffer[partial++] = 0x80; - if (partial > bit_offset) { - memset(sctx->buffer + partial, 0x0, SM3_BLOCK_SIZE - partial); - partial = 0; - - block_fn(sctx, sctx->buffer, 1); - } - - memset(sctx->buffer + partial, 0x0, bit_offset - partial); - *bits = cpu_to_be64(sctx->count << 3); - block_fn(sctx, sctx->buffer, 1); - - return 0; -} - -static inline int sm3_base_finish(struct shash_desc *desc, u8 *out) -{ - struct sm3_state *sctx = shash_desc_ctx(desc); - __be32 *digest = (__be32 *)out; - int i; - - for (i = 0; i < SM3_DIGEST_SIZE / sizeof(__be32); i++) - put_unaligned_be32(sctx->state[i], digest++); - - memzero_explicit(sctx, sizeof(*sctx)); - return 0; -} - -#endif /* _CRYPTO_SM3_BASE_H */ |
