diff options
Diffstat (limited to 'include/crypto/internal')
| -rw-r--r-- | include/crypto/internal/blake2b.h | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/include/crypto/internal/blake2b.h b/include/crypto/internal/blake2b.h deleted file mode 100644 index 3e09e2485306..000000000000 --- a/include/crypto/internal/blake2b.h +++ /dev/null @@ -1,101 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 OR MIT */ -/* - * Helper functions for BLAKE2b implementations. - * Keep this in sync with the corresponding BLAKE2s header. - */ - -#ifndef _CRYPTO_INTERNAL_BLAKE2B_H -#define _CRYPTO_INTERNAL_BLAKE2B_H - -#include <asm/byteorder.h> -#include <crypto/blake2b.h> -#include <crypto/internal/hash.h> -#include <linux/array_size.h> -#include <linux/compiler.h> -#include <linux/build_bug.h> -#include <linux/errno.h> -#include <linux/math.h> -#include <linux/string.h> -#include <linux/types.h> - -static inline void blake2b_set_lastblock(struct blake2b_state *state) -{ - state->f[0] = -1; - state->f[1] = 0; -} - -static inline void blake2b_set_nonlast(struct blake2b_state *state) -{ - state->f[0] = 0; - state->f[1] = 0; -} - -typedef void (*blake2b_compress_t)(struct blake2b_state *state, - const u8 *block, size_t nblocks, u32 inc); - -/* Helper functions for shash implementations of BLAKE2b */ - -struct blake2b_tfm_ctx { - u8 key[BLAKE2B_BLOCK_SIZE]; - unsigned int keylen; -}; - -static inline int crypto_blake2b_setkey(struct crypto_shash *tfm, - const u8 *key, unsigned int keylen) -{ - struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(tfm); - - if (keylen > BLAKE2B_KEY_SIZE) - return -EINVAL; - - BUILD_BUG_ON(BLAKE2B_KEY_SIZE > BLAKE2B_BLOCK_SIZE); - - memcpy(tctx->key, key, keylen); - memset(tctx->key + keylen, 0, BLAKE2B_BLOCK_SIZE - keylen); - tctx->keylen = keylen; - - return 0; -} - -static inline int crypto_blake2b_init(struct shash_desc *desc) -{ - const struct blake2b_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm); - struct blake2b_state *state = shash_desc_ctx(desc); - unsigned int outlen = crypto_shash_digestsize(desc->tfm); - - __blake2b_init(state, outlen, tctx->keylen); - return tctx->keylen ? - crypto_shash_update(desc, tctx->key, BLAKE2B_BLOCK_SIZE) : 0; -} - -static inline int crypto_blake2b_update_bo(struct shash_desc *desc, - const u8 *in, unsigned int inlen, - blake2b_compress_t compress) -{ - struct blake2b_state *state = shash_desc_ctx(desc); - - blake2b_set_nonlast(state); - compress(state, in, inlen / BLAKE2B_BLOCK_SIZE, BLAKE2B_BLOCK_SIZE); - return inlen - round_down(inlen, BLAKE2B_BLOCK_SIZE); -} - -static inline int crypto_blake2b_finup(struct shash_desc *desc, const u8 *in, - unsigned int inlen, u8 *out, - blake2b_compress_t compress) -{ - struct blake2b_state *state = shash_desc_ctx(desc); - u8 buf[BLAKE2B_BLOCK_SIZE]; - int i; - - memcpy(buf, in, inlen); - memset(buf + inlen, 0, BLAKE2B_BLOCK_SIZE - inlen); - blake2b_set_lastblock(state); - compress(state, buf, 1, inlen); - for (i = 0; i < ARRAY_SIZE(state->h); i++) - __cpu_to_le64s(&state->h[i]); - memcpy(out, state->h, crypto_shash_digestsize(desc->tfm)); - memzero_explicit(buf, sizeof(buf)); - return 0; -} - -#endif /* _CRYPTO_INTERNAL_BLAKE2B_H */ |
