diff options
Diffstat (limited to 'include/crypto/sha256_base.h')
| -rw-r--r-- | include/crypto/sha256_base.h | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/include/crypto/sha256_base.h b/include/crypto/sha256_base.h deleted file mode 100644 index d1f2195bb7de..000000000000 --- a/include/crypto/sha256_base.h +++ /dev/null @@ -1,128 +0,0 @@ -/* - * sha256_base.h - core logic for SHA-256 implementations - * - * Copyright (C) 2015 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 <crypto/internal/hash.h> -#include <crypto/sha.h> -#include <linux/crypto.h> -#include <linux/module.h> - -#include <asm/unaligned.h> - -typedef void (sha256_block_fn)(struct sha256_state *sst, u8 const *src, - int blocks); - -static inline int sha224_base_init(struct shash_desc *desc) -{ - struct sha256_state *sctx = shash_desc_ctx(desc); - - sctx->state[0] = SHA224_H0; - sctx->state[1] = SHA224_H1; - sctx->state[2] = SHA224_H2; - sctx->state[3] = SHA224_H3; - sctx->state[4] = SHA224_H4; - sctx->state[5] = SHA224_H5; - sctx->state[6] = SHA224_H6; - sctx->state[7] = SHA224_H7; - sctx->count = 0; - - return 0; -} - -static inline int sha256_base_init(struct shash_desc *desc) -{ - struct sha256_state *sctx = shash_desc_ctx(desc); - - sctx->state[0] = SHA256_H0; - sctx->state[1] = SHA256_H1; - sctx->state[2] = SHA256_H2; - sctx->state[3] = SHA256_H3; - sctx->state[4] = SHA256_H4; - sctx->state[5] = SHA256_H5; - sctx->state[6] = SHA256_H6; - sctx->state[7] = SHA256_H7; - sctx->count = 0; - - return 0; -} - -static inline int sha256_base_do_update(struct shash_desc *desc, - const u8 *data, - unsigned int len, - sha256_block_fn *block_fn) -{ - struct sha256_state *sctx = shash_desc_ctx(desc); - unsigned int partial = sctx->count % SHA256_BLOCK_SIZE; - - sctx->count += len; - - if (unlikely((partial + len) >= SHA256_BLOCK_SIZE)) { - int blocks; - - if (partial) { - int p = SHA256_BLOCK_SIZE - partial; - - memcpy(sctx->buf + partial, data, p); - data += p; - len -= p; - - block_fn(sctx, sctx->buf, 1); - } - - blocks = len / SHA256_BLOCK_SIZE; - len %= SHA256_BLOCK_SIZE; - - if (blocks) { - block_fn(sctx, data, blocks); - data += blocks * SHA256_BLOCK_SIZE; - } - partial = 0; - } - if (len) - memcpy(sctx->buf + partial, data, len); - - return 0; -} - -static inline int sha256_base_do_finalize(struct shash_desc *desc, - sha256_block_fn *block_fn) -{ - const int bit_offset = SHA256_BLOCK_SIZE - sizeof(__be64); - struct sha256_state *sctx = shash_desc_ctx(desc); - __be64 *bits = (__be64 *)(sctx->buf + bit_offset); - unsigned int partial = sctx->count % SHA256_BLOCK_SIZE; - - sctx->buf[partial++] = 0x80; - if (partial > bit_offset) { - memset(sctx->buf + partial, 0x0, SHA256_BLOCK_SIZE - partial); - partial = 0; - - block_fn(sctx, sctx->buf, 1); - } - - memset(sctx->buf + partial, 0x0, bit_offset - partial); - *bits = cpu_to_be64(sctx->count << 3); - block_fn(sctx, sctx->buf, 1); - - return 0; -} - -static inline int sha256_base_finish(struct shash_desc *desc, u8 *out) -{ - unsigned int digest_size = crypto_shash_digestsize(desc->tfm); - struct sha256_state *sctx = shash_desc_ctx(desc); - __be32 *digest = (__be32 *)out; - int i; - - for (i = 0; digest_size > 0; i++, digest_size -= sizeof(__be32)) - put_unaligned_be32(sctx->state[i], digest++); - - *sctx = (struct sha256_state){}; - return 0; -} |
