diff options
Diffstat (limited to 'include/crypto/sha1_base.h')
-rw-r--r-- | include/crypto/sha1_base.h | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/include/crypto/sha1_base.h b/include/crypto/sha1_base.h deleted file mode 100644 index 01b002de..00000000 --- a/include/crypto/sha1_base.h +++ /dev/null @@ -1,107 +0,0 @@ -/* - * sha1_base.h - core logic for SHA-1 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/byteorder.h> -#include <linux/crypto.h> -#include <linux/module.h> - -#include <asm/unaligned.h> - -typedef void (sha1_block_fn)(struct sha1_state *sst, u8 const *src, int blocks); - -static inline int sha1_base_init(struct shash_desc *desc) -{ - struct sha1_state *sctx = shash_desc_ctx(desc); - - sctx->state[0] = SHA1_H0; - sctx->state[1] = SHA1_H1; - sctx->state[2] = SHA1_H2; - sctx->state[3] = SHA1_H3; - sctx->state[4] = SHA1_H4; - sctx->count = 0; - - return 0; -} - -static inline int sha1_base_do_update(struct shash_desc *desc, - const u8 *data, - unsigned int len, - sha1_block_fn *block_fn) -{ - struct sha1_state *sctx = shash_desc_ctx(desc); - unsigned int partial = sctx->count % SHA1_BLOCK_SIZE; - - sctx->count += len; - - if (unlikely((partial + len) >= SHA1_BLOCK_SIZE)) { - int blocks; - - if (partial) { - int p = SHA1_BLOCK_SIZE - partial; - - memcpy(sctx->buffer + partial, data, p); - data += p; - len -= p; - - block_fn(sctx, sctx->buffer, 1); - } - - blocks = len / SHA1_BLOCK_SIZE; - len %= SHA1_BLOCK_SIZE; - - if (blocks) { - block_fn(sctx, data, blocks); - data += blocks * SHA1_BLOCK_SIZE; - } - partial = 0; - } - if (len) - memcpy(sctx->buffer + partial, data, len); - - return 0; -} - -static inline int sha1_base_do_finalize(struct shash_desc *desc, - sha1_block_fn *block_fn) -{ - const int bit_offset = SHA1_BLOCK_SIZE - sizeof(__be64); - struct sha1_state *sctx = shash_desc_ctx(desc); - __be64 *bits = (__be64 *)(sctx->buffer + bit_offset); - unsigned int partial = sctx->count % SHA1_BLOCK_SIZE; - - sctx->buffer[partial++] = 0x80; - if (partial > bit_offset) { - memset(sctx->buffer + partial, 0x0, SHA1_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 sha1_base_finish(struct shash_desc *desc, u8 *out) -{ - struct sha1_state *sctx = shash_desc_ctx(desc); - __be32 *digest = (__be32 *)out; - int i; - - for (i = 0; i < SHA1_DIGEST_SIZE / sizeof(__be32); i++) - put_unaligned_be32(sctx->state[i], digest++); - - *sctx = (struct sha1_state){}; - return 0; -} |