Botan  2.18.1
Crypto and TLS for C++11
xmss_common_ops.h
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1 /*
2  * XMSS Common Ops
3  * (C) 2016,2017 Matthias Gierlings
4  *
5  * Botan is released under the Simplified BSD License (see license.txt)
6  **/
7 
8 #ifndef BOTAN_XMSS_COMMON_OPS_H_
9 #define BOTAN_XMSS_COMMON_OPS_H_
10 
11 #include <vector>
12 #include <botan/secmem.h>
13 #include <botan/xmss_parameters.h>
14 #include <botan/internal/xmss_address.h>
15 #include <botan/xmss_hash.h>
16 
17 BOTAN_FUTURE_INTERNAL_HEADER(xmss_common_ops.h)
18 
19 namespace Botan {
20 
21 typedef std::vector<secure_vector<uint8_t>> wots_keysig_t;
22 
23 /**
24  * Operations shared by XMSS signature generation and verification operations.
25  **/
27  {
28  public:
29  /**
30  * Algorithm 7: "RAND_HASH"
31  *
32  * Generates a randomized hash.
33  *
34  * This overload is used in multithreaded scenarios, where it is
35  * required to provide seperate instances of XMSS_Hash to each
36  * thread.
37  *
38  * @param[out] result The resulting randomized hash.
39  * @param[in] left Left half of the hash function input.
40  * @param[in] right Right half of the hash function input.
41  * @param[in] adrs Adress of the hash function call.
42  * @param[in] seed The seed for G.
43  * @param[in] hash Instance of XMSS_Hash, that may only by the thead
44  * executing generate_public_key.
45  * @param[in] params
46  **/
47  static void randomize_tree_hash(
48  secure_vector<uint8_t>& result,
49  const secure_vector<uint8_t>& left,
50  const secure_vector<uint8_t>& right,
51  XMSS_Address& adrs,
52  const secure_vector<uint8_t>& seed,
53  XMSS_Hash& hash,
54  const XMSS_Parameters& params);
55 
56  /**
57  * Algorithm 8: "ltree"
58  * Create an L-tree used to compute the leaves of the binary hash tree.
59  * Takes a WOTS+ public key and compresses it to a single n-byte value.
60  *
61  * This overload is used in multithreaded scenarios, where it is
62  * required to provide seperate instances of XMSS_Hash to each thread.
63  *
64  * @param[out] result Public key compressed to a single n-byte value
65  * pk[0].
66  * @param[in] pk Winternitz One Time Signatures+ public key.
67  * @param[in] adrs Address encoding the address of the L-Tree
68  * @param[in] seed The seed generated during the public key generation.
69  * @param[in] hash Instance of XMSS_Hash, that may only be used by the
70  * thead executing create_l_tree.
71  * @param[in] params
72  **/
73  static void create_l_tree(secure_vector<uint8_t>& result,
74  wots_keysig_t pk,
75  XMSS_Address& adrs,
76  const secure_vector<uint8_t>& seed,
77  XMSS_Hash& hash,
78  const XMSS_Parameters& params);
79  };
80 
81 }
82 
83 #endif
Definition: alg_id.cpp:13
std::vector< secure_vector< uint8_t > > wots_keysig_t
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:136
MechanismType hash