/* 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 … // The start of the 8 byte field used to specify the tree. #define SPX_OFFSET_TREE … // The byte used to specify the hash type (reason). #define SPX_OFFSET_TYPE … // The high byte used to specify the key pair (which one-time signature). #define SPX_OFFSET_KP_ADDR2 … // The low byte used to specific the key pair. #define SPX_OFFSET_KP_ADDR1 … // The byte used to specify the chain address (which Winternitz chain). #define SPX_OFFSET_CHAIN_ADDR … // The byte used to specify the hash address (where in the Winternitz chain). #define SPX_OFFSET_HASH_ADDR … // The byte used to specify the height of this node in the FORS or Merkle tree. #define SPX_OFFSET_TREE_HGT … // The start of the 4 byte field used to specify the node in the FORS or Merkle // tree. #define SPX_OFFSET_TREE_INDEX … void spx_set_chain_addr(uint8_t addr[32], uint32_t chain) { … } void spx_set_hash_addr(uint8_t addr[32], uint32_t hash) { … } void spx_set_keypair_addr(uint8_t addr[32], uint32_t keypair) { … } void spx_copy_keypair_addr(uint8_t out[32], const uint8_t in[32]) { … } void spx_set_layer_addr(uint8_t addr[32], uint32_t layer) { … } void spx_set_tree_addr(uint8_t addr[32], uint64_t tree) { … } void spx_set_type(uint8_t addr[32], uint32_t type) { … } void spx_set_tree_height(uint8_t addr[32], uint32_t tree_height) { … } void spx_set_tree_index(uint8_t addr[32], uint32_t tree_index) { … } uint32_t spx_get_tree_index(uint8_t addr[32]) { … }
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