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Diffstat (limited to 'src/crypto/spx/address.c')
-rw-r--r-- | src/crypto/spx/address.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/src/crypto/spx/address.c b/src/crypto/spx/address.c deleted file mode 100644 index 13ca2f0c..00000000 --- a/src/crypto/spx/address.c +++ /dev/null @@ -1,101 +0,0 @@ -/* Copyright (c) 2023, Google LLC - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY - * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ - -#include <openssl/base.h> - -#include <string.h> - -#include "../internal.h" -#include "./address.h" -#include "./spx_util.h" - - -// Offsets of various fields in the address structure for SPHINCS+-SHA2-128s. - -// The byte used to specify the Merkle tree layer. -#define SPX_OFFSET_LAYER 0 - -// The start of the 8 byte field used to specify the tree. -#define SPX_OFFSET_TREE 1 - -// The byte used to specify the hash type (reason). -#define SPX_OFFSET_TYPE 9 - -// The high byte used to specify the key pair (which one-time signature). -#define SPX_OFFSET_KP_ADDR2 12 - -// The low byte used to specific the key pair. -#define SPX_OFFSET_KP_ADDR1 13 - -// The byte used to specify the chain address (which Winternitz chain). -#define SPX_OFFSET_CHAIN_ADDR 17 - -// The byte used to specify the hash address (where in the Winternitz chain). -#define SPX_OFFSET_HASH_ADDR 21 - -// The byte used to specify the height of this node in the FORS or Merkle tree. -#define SPX_OFFSET_TREE_HGT 17 - -// The start of the 4 byte field used to specify the node in the FORS or Merkle -// tree. -#define SPX_OFFSET_TREE_INDEX 18 - - -void spx_set_chain_addr(uint8_t addr[32], uint32_t chain) { - addr[SPX_OFFSET_CHAIN_ADDR] = (uint8_t)chain; -} - -void spx_set_hash_addr(uint8_t addr[32], uint32_t hash) { - addr[SPX_OFFSET_HASH_ADDR] = (uint8_t)hash; -} - -void spx_set_keypair_addr(uint8_t addr[32], uint32_t keypair) { - addr[SPX_OFFSET_KP_ADDR2] = (uint8_t)(keypair >> 8); - addr[SPX_OFFSET_KP_ADDR1] = (uint8_t)keypair; -} - -void spx_copy_keypair_addr(uint8_t out[32], const uint8_t in[32]) { - memcpy(out, in, SPX_OFFSET_TREE + 8); - out[SPX_OFFSET_KP_ADDR2] = in[SPX_OFFSET_KP_ADDR2]; - out[SPX_OFFSET_KP_ADDR1] = in[SPX_OFFSET_KP_ADDR1]; -} - -void spx_set_layer_addr(uint8_t addr[32], uint32_t layer) { - addr[SPX_OFFSET_LAYER] = (uint8_t)layer; -} - -void spx_set_tree_addr(uint8_t addr[32], uint64_t tree) { - spx_uint64_to_len_bytes(&addr[SPX_OFFSET_TREE], 8, tree); -} - -void spx_set_type(uint8_t addr[32], uint32_t type) { - // NIST draft relies on this setting parts of the address to 0, so we do it - // here to avoid confusion. - // - // The behavior here is only correct for the SHA2 instantiations. - memset(addr + 10, 0, 12); - addr[SPX_OFFSET_TYPE] = (uint8_t)type; -} - -void spx_set_tree_height(uint8_t addr[32], uint32_t tree_height) { - addr[SPX_OFFSET_TREE_HGT] = (uint8_t)tree_height; -} - -void spx_set_tree_index(uint8_t addr[32], uint32_t tree_index) { - CRYPTO_store_u32_be(&addr[SPX_OFFSET_TREE_INDEX], tree_index); -} - -uint32_t spx_get_tree_index(uint8_t addr[32]) { - return CRYPTO_load_u32_be(addr + SPX_OFFSET_TREE_INDEX); -} |