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378 lines
14 KiB
C
378 lines
14 KiB
C
/*
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* Copyright 2014-2026 The GmSSL Project. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*/
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#ifndef GMSSL_SPHINCS_H
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#define GMSSL_SPHINCS_H
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <gmssl/sm3.h>
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#ifdef ENABLE_SHA2
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#include <gmssl/sha2.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if 1 // SPHINCS+_128s
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# define SPHINCS_HYPERTREE_HEIGHT 63
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# define SPHINCS_HYPERTREE_LAYERS 7
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# define SPHINCS_FORS_TREE_HEIGHT 12
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# define SPHINCS_FORS_NUM_TREES 14
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#else
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# define SPHINCS_HYPERTREE_HEIGHT 66
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# define SPHINCS_HYPERTREE_LAYERS 22
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# define SPHINCS_FORS_TREE_HEIGHT 6
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# define SPHINCS_FORS_NUM_TREES 33
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#endif
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#define SPHINCS_XMSS_HEIGHT (SPHINCS_HYPERTREE_HEIGHT/SPHINCS_HYPERTREE_LAYERS) // = 9
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#define SPHINCS_XMSS_NUM_NODES ((1 << (SPHINCS_XMSS_HEIGHT + 1)) - 1) // 1023
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#define SPHINCS_FORS_TREE_NUM_NODES ((1 << (SPHINCS_FORS_TREE_HEIGHT + 1)) - 1) // = 8191
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#define SPHINCS_TBS_FORS_SIZE ((SPHINCS_FORS_TREE_HEIGHT * SPHINCS_FORS_NUM_TREES + 7)/8) // = 21
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#define SPHINCS_TBS_TREE_ADDRESS_SIZE ((SPHINCS_HYPERTREE_HEIGHT - SPHINCS_XMSS_HEIGHT + 7)/8) // = 7
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#define SPHINCS_TBS_KEYPAIR_ADDRESS_SIZE ((SPHINCS_XMSS_HEIGHT + 7)/8) // = 2
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#define SPHINCS_TBS_SIZE (SPHINCS_TBS_FORS_SIZE + SPHINCS_TBS_TREE_ADDRESS_SIZE + SPHINCS_TBS_KEYPAIR_ADDRESS_SIZE) // = 30
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// sizeof(sphincs_hash128_t) == n, when sm3/sha256, n == 16
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#define SPHINCS_DIGEST_SIZE 16
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// only support w = 16, w_bits = 4
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#define SPHINCS_WOTS_W 16
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// for sphincs+_128s and 128f, digest_bits = 128, encoded into 32 4-bit base_w numbers
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// max checksum = (w - 1) * 32 = 15 * 32 = 480, need 9 bits, 3 4-bit base_w numbers
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// so the total wots+ chinas is 32 + 3 = 35
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#define SPHINCS_WOTS_NUM_CHAINS 35
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typedef uint8_t sphincs_hash128_t[16];
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typedef uint8_t sphincs_hash256_t[32];
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#if defined(ENABLE_SPHINCS_CROSSCHECK) && defined(ENABLE_SHA2) && !defined(SPHINCS_HASH256_CTX)
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# define SPHINCS_HASH256_CTX SHA256_CTX
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# define sphincs_hash256_init sha256_init
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# define sphincs_hash256_update sha256_update
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# define sphincs_hash256_finish sha256_finish
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# define SPHINCS_HASH256_BLOCK_SIZE SHA256_BLOCK_SIZE
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# define SPHINCS_HMAC256_CTX SHA256_HMAC_CTX
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# define sphincs_hmac256_init sha256_hmac_init
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# define sphincs_hmac256_update sha256_hmac_update
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# define sphincs_hmac256_finish sha256_hmac_finish
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#else
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# define SPHINCS_HASH256_CTX SM3_CTX
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# define sphincs_hash256_init sm3_init
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# define sphincs_hash256_update sm3_update
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# define sphincs_hash256_finish sm3_finish
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# define SPHINCS_HASH256_BLOCK_SIZE SM3_BLOCK_SIZE
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# define SPHINCS_HMAC256_CTX SM3_HMAC_CTX
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# define sphincs_hmac256_init sm3_hmac_init
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# define sphincs_hmac256_update sm3_hmac_update
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# define sphincs_hmac256_finish sm3_hmac_finish
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#endif
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// ADRS scheme
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enum {
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SPHINCS_ADRS_TYPE_WOTS_HASH = 0,
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SPHINCS_ADRS_TYPE_WOTS_PK = 1,
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SPHINCS_ADRS_TYPE_TREE = 2,
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SPHINCS_ADRS_TYPE_FORS_TREE = 3,
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SPHINCS_ADRS_TYPE_FORS_ROOTS = 4,
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SPHINCS_ADRS_TYPE_WOTS_PRF = 5,
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SPHINCS_ADRS_TYPE_FORS_PRF = 6,
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};
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typedef struct {
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uint32_t layer_address;
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uint32_t tree_address[3];
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uint32_t type; // = 0
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uint32_t keypair_address;
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uint32_t chain_address;
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uint32_t hash_address;
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} SPHINCS_ADRS_WOTS_HASH;
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typedef struct {
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uint32_t layer_address;
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uint32_t tree_address[3];
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uint32_t type; // = 1
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uint32_t keypair_address;
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uint32_t padding2;
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uint32_t padding3;
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} SPHINCS_ADRS_WOTS_PK;
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typedef struct {
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uint32_t layer_address;
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uint32_t tree_address[3];
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uint32_t type; // = 2
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uint32_t padding1;
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uint32_t tree_height;
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uint32_t tree_index;
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} SPHINCS_ADRS_TREE;
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typedef struct {
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uint32_t layer_address;
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uint32_t tree_address[3];
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uint32_t type; // = 3
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uint32_t keypair_address;
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uint32_t tree_height;
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uint32_t tree_index;
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} SPHINCS_ADRS_FORS_TREE;
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typedef struct {
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uint32_t layer_address;
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uint32_t tree_address[3];
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uint32_t type; // = 4
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uint32_t keypair_address;
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uint32_t padding2;
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uint32_t padding3;
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} SPHINCS_ADRS_FORS_ROOTS;
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typedef struct {
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uint32_t layer_address;
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uint32_t tree_address[3];
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uint32_t type; // = 5
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uint32_t keypair_address;
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uint32_t chain_address;
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uint32_t hash_address; // = 0
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} SPHINCS_ADRS_WOTS_PRF;
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typedef struct {
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uint32_t layer_address;
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uint32_t tree_address[3];
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uint32_t type; // = 6
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uint32_t keypair_address;
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uint32_t tree_height; // = 0
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uint32_t tree_index;
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} SPHINCS_ADRS_FORS_PRF;
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typedef uint8_t sphincs_adrs_t[32];
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void sphincs_adrs_copy_layer_address(sphincs_adrs_t dst, const sphincs_adrs_t src);
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void sphincs_adrs_copy_tree_address(sphincs_adrs_t dst, const sphincs_adrs_t src);
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void sphincs_adrs_copy_type(sphincs_adrs_t dst, const sphincs_adrs_t src);
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void sphincs_adrs_copy_keypair_address(sphincs_adrs_t dst, const sphincs_adrs_t src);
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void sphincs_adrs_copy_chain_address(sphincs_adrs_t dst, const sphincs_adrs_t src);
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void sphincs_adrs_copy_hash_address(sphincs_adrs_t dst, const sphincs_adrs_t src);
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void sphincs_adrs_copy_tree_height(sphincs_adrs_t dst, const sphincs_adrs_t src);
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void sphincs_adrs_copy_tree_index(sphincs_adrs_t dst, const sphincs_adrs_t src);
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void sphincs_adrs_init_padding1(sphincs_adrs_t adrs);
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void sphincs_adrs_init_padding2(sphincs_adrs_t adrs);
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void sphincs_adrs_init_padding3(sphincs_adrs_t adrs);
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void sphincs_adrs_set_layer_address(sphincs_adrs_t adrs, const uint32_t address);
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void sphincs_adrs_set_tree_address(sphincs_adrs_t adrs, const uint64_t address);
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void sphincs_adrs_set_type(sphincs_adrs_t adrs, const uint32_t type);
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void sphincs_adrs_set_keypair_address(sphincs_adrs_t adrs, const uint32_t address);
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void sphincs_adrs_set_chain_address(sphincs_adrs_t adrs, const uint32_t address);
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void sphincs_adrs_set_hash_address(sphincs_adrs_t adrs, const uint32_t address);
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void sphincs_adrs_set_tree_height(sphincs_adrs_t adrs, uint32_t height);
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void sphincs_adrs_set_tree_index(sphincs_adrs_t adrs, uint32_t index);
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int sphincs_adrs_print(FILE *fp, int fmt, int ind, const char *label, const sphincs_adrs_t adrs);
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typedef struct {
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uint8_t layer_address;
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uint64_t tree_address;
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uint8_t type;
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uint32_t others[3];
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} SPHINCS_ADRSC;
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#define SPHINCS_ADRSC_SIZE 22
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typedef uint8_t sphincs_adrsc_t[22];
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void sphincs_adrs_compress(const sphincs_adrs_t adrs, sphincs_adrsc_t adrsc);
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// WOTS+
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typedef sphincs_hash128_t sphincs_wots_key_t[SPHINCS_WOTS_NUM_CHAINS];
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typedef sphincs_hash128_t sphincs_wots_sig_t[SPHINCS_WOTS_NUM_CHAINS];
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int sphincs_wots_key_print(FILE *fp, int fmt, int ind, const char *label, const sphincs_wots_key_t key);
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int sphincs_wots_sig_print(FILE *fp, int fmt, int ind, const char *label, const sphincs_wots_sig_t sig);
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void sphincs_wots_derive_sk(const sphincs_hash128_t secret,
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const sphincs_hash128_t seed, const sphincs_adrs_t in_adrs,
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sphincs_wots_key_t sk);
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void sphincs_wots_chain(const sphincs_hash128_t x,
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const sphincs_hash128_t seed, const sphincs_adrs_t ots_adrs,
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int start, int steps, sphincs_hash128_t y);
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void sphincs_wots_sk_to_pk(const sphincs_wots_key_t sk,
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const sphincs_hash128_t seed, const sphincs_adrs_t ots_adrs,
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sphincs_wots_key_t pk);
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void sphincs_wots_sign(const sphincs_wots_key_t sk,
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const sphincs_hash128_t seed, const sphincs_adrs_t ots_adrs,
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const sphincs_hash128_t dgst, sphincs_wots_sig_t sig);
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void sphincs_wots_sig_to_pk(const sphincs_wots_sig_t sig,
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const sphincs_hash128_t seed, const sphincs_adrs_t ots_adrs,
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const sphincs_hash128_t dgst, sphincs_wots_key_t pk);
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void sphincs_wots_pk_to_root(const sphincs_wots_key_t pk,
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const sphincs_hash128_t seed, const sphincs_adrs_t in_adrs,
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sphincs_hash128_t root);
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// XMSS
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void sphincs_xmss_tree_hash(
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const sphincs_hash128_t left_child, const sphincs_hash128_t right_child,
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const sphincs_hash128_t seed, const sphincs_adrs_t adrs,
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sphincs_hash256_t parent);
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void sphincs_xmss_build_tree(const sphincs_hash128_t secret,
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const sphincs_hash128_t seed, const sphincs_adrs_t adrs,
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sphincs_hash128_t tree[SPHINCS_XMSS_NUM_NODES]);
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void sphincs_xmss_build_auth_path(const sphincs_hash128_t tree[SPHINCS_XMSS_NUM_NODES],
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uint32_t tree_index, sphincs_hash128_t auth_path[SPHINCS_XMSS_HEIGHT]);
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void sphincs_xmss_build_root(const sphincs_hash128_t wots_root, uint32_t tree_index,
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const sphincs_hash128_t seed, const sphincs_adrs_t adrs,
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const sphincs_hash128_t auth_path[SPHINCS_XMSS_HEIGHT],
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sphincs_hash256_t root);
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typedef struct {
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sphincs_wots_sig_t wots_sig;
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sphincs_hash128_t auth_path[SPHINCS_XMSS_HEIGHT];
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} SPHINCS_XMSS_SIGNATURE;
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int sphincs_xmss_signature_print_ex(FILE *fp, int fmt, int ind, const char *label, const SPHINCS_XMSS_SIGNATURE *sig);
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int sphincs_xmss_signature_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *sig, size_t siglen);
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int sphincs_xmss_signature_to_bytes(const SPHINCS_XMSS_SIGNATURE *sig, uint8_t **out, size_t *outlen);
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int sphincs_xmss_signature_from_bytes(SPHINCS_XMSS_SIGNATURE *sig, const uint8_t **in, size_t *inlen);
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void sphincs_xmss_sign(const sphincs_hash128_t secret,
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const sphincs_hash128_t seed, const sphincs_adrs_t adrs, uint32_t keypair_address,
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const sphincs_hash128_t tbs_root, // to be signed xmss_root or fors_root
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SPHINCS_XMSS_SIGNATURE *sig);
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void sphincs_xmss_sig_to_root(const SPHINCS_XMSS_SIGNATURE *sig,
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const sphincs_hash128_t seed, const sphincs_adrs_t adrs, uint32_t keypair_address,
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const sphincs_hash128_t tbs_root, // to be signed xmss_root or fors_root
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sphincs_hash128_t xmss_root);
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// Hypertree
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void sphincs_hypertree_derive_root(const sphincs_hash128_t secret, const sphincs_hash128_t seed,
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sphincs_hash128_t root);
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void sphincs_hypertree_sign(const sphincs_hash128_t secret,
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const sphincs_hash128_t seed, uint64_t tree_address, uint32_t keypair_address,
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const sphincs_hash128_t tbs_fors_root,
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SPHINCS_XMSS_SIGNATURE sig[SPHINCS_HYPERTREE_LAYERS]);
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int sphincs_hypertree_verify(const sphincs_hash128_t top_xmss_root,
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const sphincs_hash128_t seed, uint64_t tree_address, uint32_t keypair_address,
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const sphincs_hash128_t tbs_fors_root,
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const SPHINCS_XMSS_SIGNATURE sig[SPHINCS_HYPERTREE_LAYERS]);
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// FORS
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void sphincs_fors_derive_sk(const sphincs_hash128_t secret,
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const sphincs_hash128_t seed, const sphincs_adrs_t in_adrs,
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uint32_t fors_index, sphincs_hash128_t sk);
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void sphincs_fors_build_tree(const sphincs_hash128_t secret,
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const sphincs_hash128_t seed, const sphincs_adrs_t in_adrs, int tree_addr,
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sphincs_hash128_t tree[SPHINCS_FORS_TREE_NUM_NODES]);;
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void sphincs_fors_derive_root(const sphincs_hash128_t secret,
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const sphincs_hash128_t seed, const sphincs_adrs_t in_adrs,
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sphincs_hash128_t fors_root);
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typedef struct {
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sphincs_hash128_t fors_sk[SPHINCS_FORS_NUM_TREES];
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sphincs_hash128_t auth_path[SPHINCS_FORS_NUM_TREES][SPHINCS_FORS_TREE_HEIGHT];
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} SPHINCS_FORS_SIGNATURE;
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#define SPHINCS_FORS_SIGNATURE_SIZE sizeof(SPHINCS_FORS_SIGNATURE)
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int sphincs_fors_signature_to_bytes(const SPHINCS_FORS_SIGNATURE *sig, uint8_t **out, size_t *outlen);
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int sphincs_fors_signature_from_bytes(SPHINCS_FORS_SIGNATURE *sig, const uint8_t **in, size_t *inlen);
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int sphincs_fors_signature_print_ex(FILE *fp, int fmt, int ind, const char *label, const SPHINCS_FORS_SIGNATURE *sig);
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int sphincs_fors_signature_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *sig, size_t siglen);
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void sphincs_fors_sign(const sphincs_hash128_t secret,
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const sphincs_hash128_t seed, const sphincs_adrs_t in_adrs,
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const uint8_t dgst[SPHINCS_TBS_FORS_SIZE],
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SPHINCS_FORS_SIGNATURE *sig);
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void sphincs_fors_sig_to_root(const SPHINCS_FORS_SIGNATURE *sig,
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const sphincs_hash128_t seed, const sphincs_adrs_t adrs,
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const uint8_t dgst[SPHINCS_TBS_FORS_SIZE], sphincs_hash128_t fors_root);
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// SPHINCS+
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typedef struct {
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sphincs_hash128_t seed;
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sphincs_hash128_t root;
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} SPHINCS_PUBLIC_KEY;
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#define SPHINCS_PUBLIC_KEY_SIZE sizeof(SPHINCS_PUBLIC_KEY) // = 32 bytes
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typedef struct {
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SPHINCS_PUBLIC_KEY public_key;
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sphincs_hash128_t secret;
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sphincs_hash128_t sk_prf;
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} SPHINCS_KEY;
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#define SPHINCS_PRIVATE_KEY_SIZE sizeof(SPHINCS_KEY)
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int sphincs_key_generate(SPHINCS_KEY *key);
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int sphincs_public_key_to_bytes(const SPHINCS_KEY *key, uint8_t **out, size_t *outlen);
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int sphincs_public_key_from_bytes(SPHINCS_KEY *key, const uint8_t **in, size_t *inlen);
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int sphincs_public_key_print(FILE *fp, int fmt, int ind, const char *label, const SPHINCS_KEY *key);
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int sphincs_private_key_to_bytes(const SPHINCS_KEY *key, uint8_t **out, size_t *outlen);
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int sphincs_private_key_from_bytes(SPHINCS_KEY *key, const uint8_t **in, size_t *inlen);
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int sphincs_private_key_print(FILE *fp, int fmt, int ind, const char *label, const SPHINCS_KEY *key);
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void sphincs_key_cleanup(SPHINCS_KEY *key);
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typedef struct {
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sphincs_hash128_t random;
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SPHINCS_FORS_SIGNATURE fors_sig;
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SPHINCS_XMSS_SIGNATURE xmss_sigs[SPHINCS_HYPERTREE_LAYERS];
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} SPHINCS_SIGNATURE;
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#define SPHINCS_SIGNATURE_SIZE sizeof(SPHINCS_SIGNATURE)
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int sphincs_signature_to_bytes(const SPHINCS_SIGNATURE *sig, uint8_t **out, size_t *outlen);
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int sphincs_signature_from_bytes(SPHINCS_SIGNATURE *sig, const uint8_t **in, size_t *inlen);
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int sphincs_signature_print_ex(FILE *fp, int fmt, int ind, const char *label, const SPHINCS_SIGNATURE *sig);
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int sphincs_signature_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *sig, size_t siglen);
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typedef struct {
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SPHINCS_HMAC256_CTX hmac_ctx;
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SPHINCS_HASH256_CTX hash_ctx;
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SPHINCS_SIGNATURE sig;
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int state; // after init 0, after prepare 1, after update 2
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size_t round1_msglen;
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size_t round2_msglen;
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SPHINCS_KEY key;
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} SPHINCS_SIGN_CTX;
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// when optional_random is NULL, sphincs use public_key.seed, generate deterministic signature
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int sphincs_sign_init_ex(SPHINCS_SIGN_CTX *ctx, const SPHINCS_KEY *key, const sphincs_hash128_t optional_random);
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int sphincs_sign_init(SPHINCS_SIGN_CTX *ctx, const SPHINCS_KEY *key);
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int sphincs_sign_prepare(SPHINCS_SIGN_CTX *ctx, const uint8_t *data, size_t datalen);
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int sphincs_sign_update(SPHINCS_SIGN_CTX *ctx, const uint8_t *data, size_t datalen);
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int sphincs_sign_finish_ex(SPHINCS_SIGN_CTX *ctx, SPHINCS_SIGNATURE *sig);
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int sphincs_sign_finish(SPHINCS_SIGN_CTX *ctx, uint8_t *sig, size_t *siglen);
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int sphincs_verify_init_ex(SPHINCS_SIGN_CTX *ctx, const SPHINCS_KEY *key, const SPHINCS_SIGNATURE *sig);
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int sphincs_verify_init(SPHINCS_SIGN_CTX *ctx, const SPHINCS_KEY *key, const uint8_t *sig, size_t siglen);
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int sphincs_verify_update(SPHINCS_SIGN_CTX *ctx, const uint8_t *data, size_t datalen);
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int sphincs_verify_finish(SPHINCS_SIGN_CTX *ctx);
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void sphincs_sign_ctx_cleanup(SPHINCS_SIGN_CTX *ctx);
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#ifdef __cplusplus
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}
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#endif
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#endif
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