/src/botan/src/lib/pubkey/xmss/xmss_parameters.cpp
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1 | | /* |
2 | | * XMSS Parameters |
3 | | * Descibes a signature method for XMSS, as defined in: |
4 | | * [1] XMSS: Extended Hash-Based Signatures, |
5 | | * Request for Comments: 8391 |
6 | | * Release: May 2018. |
7 | | * https://datatracker.ietf.org/doc/rfc8391/ |
8 | | * |
9 | | * (C) 2016,2017,2018 Matthias Gierlings |
10 | | * |
11 | | * Botan is released under the Simplified BSD License (see license.txt) |
12 | | **/ |
13 | | |
14 | | #include <botan/xmss_parameters.h> |
15 | | #include <botan/exceptn.h> |
16 | | |
17 | | namespace Botan { |
18 | | |
19 | | XMSS_Parameters::xmss_algorithm_t XMSS_Parameters::xmss_id_from_string(const std::string& param_set) |
20 | 0 | { |
21 | 0 | if(param_set == "XMSS-SHA2_10_256") |
22 | 0 | { return XMSS_SHA2_10_256; } |
23 | 0 | if(param_set == "XMSS-SHA2_16_256") |
24 | 0 | { return XMSS_SHA2_16_256; } |
25 | 0 | if(param_set == "XMSS-SHA2_20_256") |
26 | 0 | { return XMSS_SHA2_20_256; } |
27 | 0 | if(param_set == "XMSS-SHA2_10_512") |
28 | 0 | { return XMSS_SHA2_10_512; } |
29 | 0 | if(param_set == "XMSS-SHA2_16_512") |
30 | 0 | { return XMSS_SHA2_16_512; } |
31 | 0 | if(param_set == "XMSS-SHA2_20_512") |
32 | 0 | { return XMSS_SHA2_20_512; } |
33 | 0 | if(param_set == "XMSS-SHAKE_10_256") |
34 | 0 | { return XMSS_SHAKE_10_256; } |
35 | 0 | if(param_set == "XMSS-SHAKE_16_256") |
36 | 0 | { return XMSS_SHAKE_16_256; } |
37 | 0 | if(param_set == "XMSS-SHAKE_20_256") |
38 | 0 | { return XMSS_SHAKE_20_256; } |
39 | 0 | if(param_set == "XMSS-SHAKE_10_512") |
40 | 0 | { return XMSS_SHAKE_10_512; } |
41 | 0 | if(param_set == "XMSS-SHAKE_16_512") |
42 | 0 | { return XMSS_SHAKE_16_512; } |
43 | 0 | if(param_set == "XMSS-SHAKE_20_512") |
44 | 0 | { return XMSS_SHAKE_20_512; } |
45 | 0 | throw Lookup_Error("Unknown XMSS algorithm param '" + param_set + "'"); |
46 | 0 | } |
47 | | |
48 | | XMSS_Parameters::XMSS_Parameters(const std::string& param_set) |
49 | | : XMSS_Parameters(XMSS_Parameters::xmss_id_from_string(param_set)) |
50 | 0 | { |
51 | 0 | } |
52 | | |
53 | | XMSS_Parameters::XMSS_Parameters(xmss_algorithm_t oid) |
54 | | : m_oid(oid) |
55 | 0 | { |
56 | 0 | switch(oid) |
57 | 0 | { |
58 | 0 | case XMSS_SHA2_10_256: |
59 | 0 | m_element_size = 32; |
60 | 0 | m_w = 16; |
61 | 0 | m_len = 67; |
62 | 0 | m_tree_height = 10; |
63 | 0 | m_name = "XMSS-SHA2_10_256"; |
64 | 0 | m_hash_name = "SHA-256"; |
65 | 0 | m_strength = 256; |
66 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_256; |
67 | 0 | break; |
68 | 0 | case XMSS_SHA2_16_256: |
69 | 0 | m_element_size = 32; |
70 | 0 | m_w = 16; |
71 | 0 | m_len = 67; |
72 | 0 | m_tree_height = 16; |
73 | 0 | m_name = "XMSS-SHA2_16_256"; |
74 | 0 | m_hash_name = "SHA-256"; |
75 | 0 | m_strength = 256; |
76 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_256; |
77 | 0 | break; |
78 | 0 | case XMSS_SHA2_20_256: |
79 | 0 | m_element_size = 32; |
80 | 0 | m_w = 16; |
81 | 0 | m_len = 67; |
82 | 0 | m_tree_height = 20; |
83 | 0 | m_name = "XMSS-SHA2_20_256"; |
84 | 0 | m_hash_name = "SHA-256"; |
85 | 0 | m_strength = 256; |
86 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_256; |
87 | 0 | break; |
88 | 0 | case XMSS_SHA2_10_512: |
89 | 0 | m_element_size = 64; |
90 | 0 | m_w = 16; |
91 | 0 | m_len = 131; |
92 | 0 | m_tree_height = 10; |
93 | 0 | m_name = "XMSS-SHA2_10_512"; |
94 | 0 | m_hash_name = "SHA-512"; |
95 | 0 | m_strength = 512; |
96 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_512; |
97 | 0 | break; |
98 | 0 | case XMSS_SHA2_16_512: |
99 | 0 | m_element_size = 64; |
100 | 0 | m_w = 16; |
101 | 0 | m_len = 131; |
102 | 0 | m_tree_height = 16; |
103 | 0 | m_name = "XMSS-SHA2_16_512"; |
104 | 0 | m_hash_name = "SHA-512"; |
105 | 0 | m_strength = 512; |
106 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_512; |
107 | 0 | break; |
108 | 0 | case XMSS_SHA2_20_512: |
109 | 0 | m_element_size = 64; |
110 | 0 | m_w = 16; |
111 | 0 | m_len = 131; |
112 | 0 | m_tree_height = 20; |
113 | 0 | m_name = "XMSS-SHA2_20_512"; |
114 | 0 | m_hash_name = "SHA-512"; |
115 | 0 | m_strength = 512; |
116 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_512; |
117 | 0 | break; |
118 | 0 | case XMSS_SHAKE_10_256: |
119 | 0 | m_element_size = 32; |
120 | 0 | m_w = 16; |
121 | 0 | m_len = 67; |
122 | 0 | m_tree_height = 10; |
123 | 0 | m_name = "XMSS-SHAKE_10_256"; |
124 | 0 | m_hash_name = "SHAKE-128(256)"; |
125 | 0 | m_strength = 256; |
126 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE_256; |
127 | 0 | break; |
128 | 0 | case XMSS_SHAKE_16_256: |
129 | 0 | m_element_size = 32; |
130 | 0 | m_w = 16; |
131 | 0 | m_len = 67; |
132 | 0 | m_tree_height = 16; |
133 | 0 | m_name = "XMSS-SHAKE_16_256"; |
134 | 0 | m_hash_name = "SHAKE-128(256)"; |
135 | 0 | m_strength = 256; |
136 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE_256; |
137 | 0 | break; |
138 | 0 | case XMSS_SHAKE_20_256: |
139 | 0 | m_element_size = 32; |
140 | 0 | m_w = 16; |
141 | 0 | m_len = 67; |
142 | 0 | m_tree_height = 20; |
143 | 0 | m_name = "XMSS-SHAKE_20_256"; |
144 | 0 | m_hash_name = "SHAKE-128(256)"; |
145 | 0 | m_strength = 256; |
146 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE_256; |
147 | 0 | break; |
148 | 0 | case XMSS_SHAKE_10_512: |
149 | 0 | m_element_size = 64; |
150 | 0 | m_w = 16; |
151 | 0 | m_len = 131; |
152 | 0 | m_tree_height = 10; |
153 | 0 | m_name = "XMSS-SHAKE_10_512"; |
154 | 0 | m_hash_name = "SHAKE-256(512)"; |
155 | 0 | m_strength = 512; |
156 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE_512; |
157 | 0 | break; |
158 | 0 | case XMSS_SHAKE_16_512: |
159 | 0 | m_element_size = 64; |
160 | 0 | m_w = 16; |
161 | 0 | m_len = 131; |
162 | 0 | m_tree_height = 16; |
163 | 0 | m_name = "XMSS-SHAKE_16_512"; |
164 | 0 | m_hash_name = "SHAKE-256(512)"; |
165 | 0 | m_strength = 512; |
166 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE_512; |
167 | 0 | break; |
168 | 0 | case XMSS_SHAKE_20_512: |
169 | 0 | m_element_size = 64; |
170 | 0 | m_w = 16; |
171 | 0 | m_len = 131; |
172 | 0 | m_tree_height = 20; |
173 | 0 | m_name = "XMSS-SHAKE_20_512"; |
174 | 0 | m_hash_name = "SHAKE-256(512)"; |
175 | 0 | m_strength = 512; |
176 | 0 | m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE_512; |
177 | 0 | break; |
178 | 0 | default: |
179 | 0 | throw Not_Implemented("Algorithm id does not match any known XMSS algorithm id:" + std::to_string(oid)); |
180 | 0 | break; |
181 | 0 | } |
182 | 0 | } |
183 | | |
184 | | } |