2 * Elliptic curves over GF(p): curve-specific data and functions
4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
5 * SPDX-License-Identifier: Apache-2.0
7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
8 * not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 * This file is part of mbed TLS (https://tls.mbed.org)
22 #if !defined(MBEDTLS_CONFIG_FILE)
23 #include "mbedtls/config.h"
25 #include MBEDTLS_CONFIG_FILE
28 #if defined(MBEDTLS_ECP_C)
30 #include "mbedtls/ecp.h"
31 #include "mbedtls/platform_util.h"
35 #if !defined(MBEDTLS_ECP_ALT)
37 /* Parameter validation macros based on platform_util.h */
38 #define ECP_VALIDATE_RET( cond ) \
39 MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ECP_BAD_INPUT_DATA )
40 #define ECP_VALIDATE( cond ) \
41 MBEDTLS_INTERNAL_VALIDATE( cond )
43 #if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
44 !defined(inline) && !defined(__cplusplus)
45 #define inline __inline
49 * Conversion macros for embedded constants:
50 * build lists of mbedtls_mpi_uint's from lists of unsigned char's grouped by 8, 4 or 2
52 #if defined(MBEDTLS_HAVE_INT32)
54 #define BYTES_TO_T_UINT_4( a, b, c, d ) \
55 ( (mbedtls_mpi_uint) (a) << 0 ) | \
56 ( (mbedtls_mpi_uint) (b) << 8 ) | \
57 ( (mbedtls_mpi_uint) (c) << 16 ) | \
58 ( (mbedtls_mpi_uint) (d) << 24 )
60 #define BYTES_TO_T_UINT_2( a, b ) \
61 BYTES_TO_T_UINT_4( a, b, 0, 0 )
63 #define BYTES_TO_T_UINT_8( a, b, c, d, e, f, g, h ) \
64 BYTES_TO_T_UINT_4( a, b, c, d ), \
65 BYTES_TO_T_UINT_4( e, f, g, h )
69 #define BYTES_TO_T_UINT_8( a, b, c, d, e, f, g, h ) \
70 ( (mbedtls_mpi_uint) (a) << 0 ) | \
71 ( (mbedtls_mpi_uint) (b) << 8 ) | \
72 ( (mbedtls_mpi_uint) (c) << 16 ) | \
73 ( (mbedtls_mpi_uint) (d) << 24 ) | \
74 ( (mbedtls_mpi_uint) (e) << 32 ) | \
75 ( (mbedtls_mpi_uint) (f) << 40 ) | \
76 ( (mbedtls_mpi_uint) (g) << 48 ) | \
77 ( (mbedtls_mpi_uint) (h) << 56 )
79 #define BYTES_TO_T_UINT_4( a, b, c, d ) \
80 BYTES_TO_T_UINT_8( a, b, c, d, 0, 0, 0, 0 )
82 #define BYTES_TO_T_UINT_2( a, b ) \
83 BYTES_TO_T_UINT_8( a, b, 0, 0, 0, 0, 0, 0 )
85 #endif /* bits in mbedtls_mpi_uint */
88 * Note: the constants are in little-endian order
89 * to be directly usable in MPIs
93 * Domain parameters for secp192r1
95 #if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
96 static const mbedtls_mpi_uint secp192r1_p[] = {
97 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
98 BYTES_TO_T_UINT_8( 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
99 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
101 static const mbedtls_mpi_uint secp192r1_b[] = {
102 BYTES_TO_T_UINT_8( 0xB1, 0xB9, 0x46, 0xC1, 0xEC, 0xDE, 0xB8, 0xFE ),
103 BYTES_TO_T_UINT_8( 0x49, 0x30, 0x24, 0x72, 0xAB, 0xE9, 0xA7, 0x0F ),
104 BYTES_TO_T_UINT_8( 0xE7, 0x80, 0x9C, 0xE5, 0x19, 0x05, 0x21, 0x64 ),
106 static const mbedtls_mpi_uint secp192r1_gx[] = {
107 BYTES_TO_T_UINT_8( 0x12, 0x10, 0xFF, 0x82, 0xFD, 0x0A, 0xFF, 0xF4 ),
108 BYTES_TO_T_UINT_8( 0x00, 0x88, 0xA1, 0x43, 0xEB, 0x20, 0xBF, 0x7C ),
109 BYTES_TO_T_UINT_8( 0xF6, 0x90, 0x30, 0xB0, 0x0E, 0xA8, 0x8D, 0x18 ),
111 static const mbedtls_mpi_uint secp192r1_gy[] = {
112 BYTES_TO_T_UINT_8( 0x11, 0x48, 0x79, 0x1E, 0xA1, 0x77, 0xF9, 0x73 ),
113 BYTES_TO_T_UINT_8( 0xD5, 0xCD, 0x24, 0x6B, 0xED, 0x11, 0x10, 0x63 ),
114 BYTES_TO_T_UINT_8( 0x78, 0xDA, 0xC8, 0xFF, 0x95, 0x2B, 0x19, 0x07 ),
116 static const mbedtls_mpi_uint secp192r1_n[] = {
117 BYTES_TO_T_UINT_8( 0x31, 0x28, 0xD2, 0xB4, 0xB1, 0xC9, 0x6B, 0x14 ),
118 BYTES_TO_T_UINT_8( 0x36, 0xF8, 0xDE, 0x99, 0xFF, 0xFF, 0xFF, 0xFF ),
119 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
121 #endif /* MBEDTLS_ECP_DP_SECP192R1_ENABLED */
124 * Domain parameters for secp224r1
126 #if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
127 static const mbedtls_mpi_uint secp224r1_p[] = {
128 BYTES_TO_T_UINT_8( 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ),
129 BYTES_TO_T_UINT_8( 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF ),
130 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
131 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00 ),
133 static const mbedtls_mpi_uint secp224r1_b[] = {
134 BYTES_TO_T_UINT_8( 0xB4, 0xFF, 0x55, 0x23, 0x43, 0x39, 0x0B, 0x27 ),
135 BYTES_TO_T_UINT_8( 0xBA, 0xD8, 0xBF, 0xD7, 0xB7, 0xB0, 0x44, 0x50 ),
136 BYTES_TO_T_UINT_8( 0x56, 0x32, 0x41, 0xF5, 0xAB, 0xB3, 0x04, 0x0C ),
137 BYTES_TO_T_UINT_4( 0x85, 0x0A, 0x05, 0xB4 ),
139 static const mbedtls_mpi_uint secp224r1_gx[] = {
140 BYTES_TO_T_UINT_8( 0x21, 0x1D, 0x5C, 0x11, 0xD6, 0x80, 0x32, 0x34 ),
141 BYTES_TO_T_UINT_8( 0x22, 0x11, 0xC2, 0x56, 0xD3, 0xC1, 0x03, 0x4A ),
142 BYTES_TO_T_UINT_8( 0xB9, 0x90, 0x13, 0x32, 0x7F, 0xBF, 0xB4, 0x6B ),
143 BYTES_TO_T_UINT_4( 0xBD, 0x0C, 0x0E, 0xB7 ),
145 static const mbedtls_mpi_uint secp224r1_gy[] = {
146 BYTES_TO_T_UINT_8( 0x34, 0x7E, 0x00, 0x85, 0x99, 0x81, 0xD5, 0x44 ),
147 BYTES_TO_T_UINT_8( 0x64, 0x47, 0x07, 0x5A, 0xA0, 0x75, 0x43, 0xCD ),
148 BYTES_TO_T_UINT_8( 0xE6, 0xDF, 0x22, 0x4C, 0xFB, 0x23, 0xF7, 0xB5 ),
149 BYTES_TO_T_UINT_4( 0x88, 0x63, 0x37, 0xBD ),
151 static const mbedtls_mpi_uint secp224r1_n[] = {
152 BYTES_TO_T_UINT_8( 0x3D, 0x2A, 0x5C, 0x5C, 0x45, 0x29, 0xDD, 0x13 ),
153 BYTES_TO_T_UINT_8( 0x3E, 0xF0, 0xB8, 0xE0, 0xA2, 0x16, 0xFF, 0xFF ),
154 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
155 BYTES_TO_T_UINT_4( 0xFF, 0xFF, 0xFF, 0xFF ),
157 #endif /* MBEDTLS_ECP_DP_SECP224R1_ENABLED */
160 * Domain parameters for secp256r1
162 #if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
163 static const mbedtls_mpi_uint secp256r1_p[] = {
164 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
165 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00 ),
166 BYTES_TO_T_UINT_8( 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ),
167 BYTES_TO_T_UINT_8( 0x01, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF ),
169 static const mbedtls_mpi_uint secp256r1_b[] = {
170 BYTES_TO_T_UINT_8( 0x4B, 0x60, 0xD2, 0x27, 0x3E, 0x3C, 0xCE, 0x3B ),
171 BYTES_TO_T_UINT_8( 0xF6, 0xB0, 0x53, 0xCC, 0xB0, 0x06, 0x1D, 0x65 ),
172 BYTES_TO_T_UINT_8( 0xBC, 0x86, 0x98, 0x76, 0x55, 0xBD, 0xEB, 0xB3 ),
173 BYTES_TO_T_UINT_8( 0xE7, 0x93, 0x3A, 0xAA, 0xD8, 0x35, 0xC6, 0x5A ),
175 static const mbedtls_mpi_uint secp256r1_gx[] = {
176 BYTES_TO_T_UINT_8( 0x96, 0xC2, 0x98, 0xD8, 0x45, 0x39, 0xA1, 0xF4 ),
177 BYTES_TO_T_UINT_8( 0xA0, 0x33, 0xEB, 0x2D, 0x81, 0x7D, 0x03, 0x77 ),
178 BYTES_TO_T_UINT_8( 0xF2, 0x40, 0xA4, 0x63, 0xE5, 0xE6, 0xBC, 0xF8 ),
179 BYTES_TO_T_UINT_8( 0x47, 0x42, 0x2C, 0xE1, 0xF2, 0xD1, 0x17, 0x6B ),
181 static const mbedtls_mpi_uint secp256r1_gy[] = {
182 BYTES_TO_T_UINT_8( 0xF5, 0x51, 0xBF, 0x37, 0x68, 0x40, 0xB6, 0xCB ),
183 BYTES_TO_T_UINT_8( 0xCE, 0x5E, 0x31, 0x6B, 0x57, 0x33, 0xCE, 0x2B ),
184 BYTES_TO_T_UINT_8( 0x16, 0x9E, 0x0F, 0x7C, 0x4A, 0xEB, 0xE7, 0x8E ),
185 BYTES_TO_T_UINT_8( 0x9B, 0x7F, 0x1A, 0xFE, 0xE2, 0x42, 0xE3, 0x4F ),
187 static const mbedtls_mpi_uint secp256r1_n[] = {
188 BYTES_TO_T_UINT_8( 0x51, 0x25, 0x63, 0xFC, 0xC2, 0xCA, 0xB9, 0xF3 ),
189 BYTES_TO_T_UINT_8( 0x84, 0x9E, 0x17, 0xA7, 0xAD, 0xFA, 0xE6, 0xBC ),
190 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
191 BYTES_TO_T_UINT_8( 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF ),
193 #endif /* MBEDTLS_ECP_DP_SECP256R1_ENABLED */
196 * Domain parameters for secp384r1
198 #if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
199 static const mbedtls_mpi_uint secp384r1_p[] = {
200 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00 ),
201 BYTES_TO_T_UINT_8( 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF ),
202 BYTES_TO_T_UINT_8( 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
203 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
204 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
205 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
207 static const mbedtls_mpi_uint secp384r1_b[] = {
208 BYTES_TO_T_UINT_8( 0xEF, 0x2A, 0xEC, 0xD3, 0xED, 0xC8, 0x85, 0x2A ),
209 BYTES_TO_T_UINT_8( 0x9D, 0xD1, 0x2E, 0x8A, 0x8D, 0x39, 0x56, 0xC6 ),
210 BYTES_TO_T_UINT_8( 0x5A, 0x87, 0x13, 0x50, 0x8F, 0x08, 0x14, 0x03 ),
211 BYTES_TO_T_UINT_8( 0x12, 0x41, 0x81, 0xFE, 0x6E, 0x9C, 0x1D, 0x18 ),
212 BYTES_TO_T_UINT_8( 0x19, 0x2D, 0xF8, 0xE3, 0x6B, 0x05, 0x8E, 0x98 ),
213 BYTES_TO_T_UINT_8( 0xE4, 0xE7, 0x3E, 0xE2, 0xA7, 0x2F, 0x31, 0xB3 ),
215 static const mbedtls_mpi_uint secp384r1_gx[] = {
216 BYTES_TO_T_UINT_8( 0xB7, 0x0A, 0x76, 0x72, 0x38, 0x5E, 0x54, 0x3A ),
217 BYTES_TO_T_UINT_8( 0x6C, 0x29, 0x55, 0xBF, 0x5D, 0xF2, 0x02, 0x55 ),
218 BYTES_TO_T_UINT_8( 0x38, 0x2A, 0x54, 0x82, 0xE0, 0x41, 0xF7, 0x59 ),
219 BYTES_TO_T_UINT_8( 0x98, 0x9B, 0xA7, 0x8B, 0x62, 0x3B, 0x1D, 0x6E ),
220 BYTES_TO_T_UINT_8( 0x74, 0xAD, 0x20, 0xF3, 0x1E, 0xC7, 0xB1, 0x8E ),
221 BYTES_TO_T_UINT_8( 0x37, 0x05, 0x8B, 0xBE, 0x22, 0xCA, 0x87, 0xAA ),
223 static const mbedtls_mpi_uint secp384r1_gy[] = {
224 BYTES_TO_T_UINT_8( 0x5F, 0x0E, 0xEA, 0x90, 0x7C, 0x1D, 0x43, 0x7A ),
225 BYTES_TO_T_UINT_8( 0x9D, 0x81, 0x7E, 0x1D, 0xCE, 0xB1, 0x60, 0x0A ),
226 BYTES_TO_T_UINT_8( 0xC0, 0xB8, 0xF0, 0xB5, 0x13, 0x31, 0xDA, 0xE9 ),
227 BYTES_TO_T_UINT_8( 0x7C, 0x14, 0x9A, 0x28, 0xBD, 0x1D, 0xF4, 0xF8 ),
228 BYTES_TO_T_UINT_8( 0x29, 0xDC, 0x92, 0x92, 0xBF, 0x98, 0x9E, 0x5D ),
229 BYTES_TO_T_UINT_8( 0x6F, 0x2C, 0x26, 0x96, 0x4A, 0xDE, 0x17, 0x36 ),
231 static const mbedtls_mpi_uint secp384r1_n[] = {
232 BYTES_TO_T_UINT_8( 0x73, 0x29, 0xC5, 0xCC, 0x6A, 0x19, 0xEC, 0xEC ),
233 BYTES_TO_T_UINT_8( 0x7A, 0xA7, 0xB0, 0x48, 0xB2, 0x0D, 0x1A, 0x58 ),
234 BYTES_TO_T_UINT_8( 0xDF, 0x2D, 0x37, 0xF4, 0x81, 0x4D, 0x63, 0xC7 ),
235 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
236 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
237 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
239 #endif /* MBEDTLS_ECP_DP_SECP384R1_ENABLED */
242 * Domain parameters for secp521r1
244 #if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
245 static const mbedtls_mpi_uint secp521r1_p[] = {
246 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
247 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
248 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
249 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
250 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
251 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
252 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
253 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
254 BYTES_TO_T_UINT_2( 0xFF, 0x01 ),
256 static const mbedtls_mpi_uint secp521r1_b[] = {
257 BYTES_TO_T_UINT_8( 0x00, 0x3F, 0x50, 0x6B, 0xD4, 0x1F, 0x45, 0xEF ),
258 BYTES_TO_T_UINT_8( 0xF1, 0x34, 0x2C, 0x3D, 0x88, 0xDF, 0x73, 0x35 ),
259 BYTES_TO_T_UINT_8( 0x07, 0xBF, 0xB1, 0x3B, 0xBD, 0xC0, 0x52, 0x16 ),
260 BYTES_TO_T_UINT_8( 0x7B, 0x93, 0x7E, 0xEC, 0x51, 0x39, 0x19, 0x56 ),
261 BYTES_TO_T_UINT_8( 0xE1, 0x09, 0xF1, 0x8E, 0x91, 0x89, 0xB4, 0xB8 ),
262 BYTES_TO_T_UINT_8( 0xF3, 0x15, 0xB3, 0x99, 0x5B, 0x72, 0xDA, 0xA2 ),
263 BYTES_TO_T_UINT_8( 0xEE, 0x40, 0x85, 0xB6, 0xA0, 0x21, 0x9A, 0x92 ),
264 BYTES_TO_T_UINT_8( 0x1F, 0x9A, 0x1C, 0x8E, 0x61, 0xB9, 0x3E, 0x95 ),
265 BYTES_TO_T_UINT_2( 0x51, 0x00 ),
267 static const mbedtls_mpi_uint secp521r1_gx[] = {
268 BYTES_TO_T_UINT_8( 0x66, 0xBD, 0xE5, 0xC2, 0x31, 0x7E, 0x7E, 0xF9 ),
269 BYTES_TO_T_UINT_8( 0x9B, 0x42, 0x6A, 0x85, 0xC1, 0xB3, 0x48, 0x33 ),
270 BYTES_TO_T_UINT_8( 0xDE, 0xA8, 0xFF, 0xA2, 0x27, 0xC1, 0x1D, 0xFE ),
271 BYTES_TO_T_UINT_8( 0x28, 0x59, 0xE7, 0xEF, 0x77, 0x5E, 0x4B, 0xA1 ),
272 BYTES_TO_T_UINT_8( 0xBA, 0x3D, 0x4D, 0x6B, 0x60, 0xAF, 0x28, 0xF8 ),
273 BYTES_TO_T_UINT_8( 0x21, 0xB5, 0x3F, 0x05, 0x39, 0x81, 0x64, 0x9C ),
274 BYTES_TO_T_UINT_8( 0x42, 0xB4, 0x95, 0x23, 0x66, 0xCB, 0x3E, 0x9E ),
275 BYTES_TO_T_UINT_8( 0xCD, 0xE9, 0x04, 0x04, 0xB7, 0x06, 0x8E, 0x85 ),
276 BYTES_TO_T_UINT_2( 0xC6, 0x00 ),
278 static const mbedtls_mpi_uint secp521r1_gy[] = {
279 BYTES_TO_T_UINT_8( 0x50, 0x66, 0xD1, 0x9F, 0x76, 0x94, 0xBE, 0x88 ),
280 BYTES_TO_T_UINT_8( 0x40, 0xC2, 0x72, 0xA2, 0x86, 0x70, 0x3C, 0x35 ),
281 BYTES_TO_T_UINT_8( 0x61, 0x07, 0xAD, 0x3F, 0x01, 0xB9, 0x50, 0xC5 ),
282 BYTES_TO_T_UINT_8( 0x40, 0x26, 0xF4, 0x5E, 0x99, 0x72, 0xEE, 0x97 ),
283 BYTES_TO_T_UINT_8( 0x2C, 0x66, 0x3E, 0x27, 0x17, 0xBD, 0xAF, 0x17 ),
284 BYTES_TO_T_UINT_8( 0x68, 0x44, 0x9B, 0x57, 0x49, 0x44, 0xF5, 0x98 ),
285 BYTES_TO_T_UINT_8( 0xD9, 0x1B, 0x7D, 0x2C, 0xB4, 0x5F, 0x8A, 0x5C ),
286 BYTES_TO_T_UINT_8( 0x04, 0xC0, 0x3B, 0x9A, 0x78, 0x6A, 0x29, 0x39 ),
287 BYTES_TO_T_UINT_2( 0x18, 0x01 ),
289 static const mbedtls_mpi_uint secp521r1_n[] = {
290 BYTES_TO_T_UINT_8( 0x09, 0x64, 0x38, 0x91, 0x1E, 0xB7, 0x6F, 0xBB ),
291 BYTES_TO_T_UINT_8( 0xAE, 0x47, 0x9C, 0x89, 0xB8, 0xC9, 0xB5, 0x3B ),
292 BYTES_TO_T_UINT_8( 0xD0, 0xA5, 0x09, 0xF7, 0x48, 0x01, 0xCC, 0x7F ),
293 BYTES_TO_T_UINT_8( 0x6B, 0x96, 0x2F, 0xBF, 0x83, 0x87, 0x86, 0x51 ),
294 BYTES_TO_T_UINT_8( 0xFA, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
295 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
296 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
297 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
298 BYTES_TO_T_UINT_2( 0xFF, 0x01 ),
300 #endif /* MBEDTLS_ECP_DP_SECP521R1_ENABLED */
302 #if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
303 static const mbedtls_mpi_uint secp192k1_p[] = {
304 BYTES_TO_T_UINT_8( 0x37, 0xEE, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF ),
305 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
306 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
308 static const mbedtls_mpi_uint secp192k1_a[] = {
309 BYTES_TO_T_UINT_2( 0x00, 0x00 ),
311 static const mbedtls_mpi_uint secp192k1_b[] = {
312 BYTES_TO_T_UINT_2( 0x03, 0x00 ),
314 static const mbedtls_mpi_uint secp192k1_gx[] = {
315 BYTES_TO_T_UINT_8( 0x7D, 0x6C, 0xE0, 0xEA, 0xB1, 0xD1, 0xA5, 0x1D ),
316 BYTES_TO_T_UINT_8( 0x34, 0xF4, 0xB7, 0x80, 0x02, 0x7D, 0xB0, 0x26 ),
317 BYTES_TO_T_UINT_8( 0xAE, 0xE9, 0x57, 0xC0, 0x0E, 0xF1, 0x4F, 0xDB ),
319 static const mbedtls_mpi_uint secp192k1_gy[] = {
320 BYTES_TO_T_UINT_8( 0x9D, 0x2F, 0x5E, 0xD9, 0x88, 0xAA, 0x82, 0x40 ),
321 BYTES_TO_T_UINT_8( 0x34, 0x86, 0xBE, 0x15, 0xD0, 0x63, 0x41, 0x84 ),
322 BYTES_TO_T_UINT_8( 0xA7, 0x28, 0x56, 0x9C, 0x6D, 0x2F, 0x2F, 0x9B ),
324 static const mbedtls_mpi_uint secp192k1_n[] = {
325 BYTES_TO_T_UINT_8( 0x8D, 0xFD, 0xDE, 0x74, 0x6A, 0x46, 0x69, 0x0F ),
326 BYTES_TO_T_UINT_8( 0x17, 0xFC, 0xF2, 0x26, 0xFE, 0xFF, 0xFF, 0xFF ),
327 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
329 #endif /* MBEDTLS_ECP_DP_SECP192K1_ENABLED */
331 #if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
332 static const mbedtls_mpi_uint secp224k1_p[] = {
333 BYTES_TO_T_UINT_8( 0x6D, 0xE5, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF ),
334 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
335 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
336 BYTES_TO_T_UINT_4( 0xFF, 0xFF, 0xFF, 0xFF ),
338 static const mbedtls_mpi_uint secp224k1_a[] = {
339 BYTES_TO_T_UINT_2( 0x00, 0x00 ),
341 static const mbedtls_mpi_uint secp224k1_b[] = {
342 BYTES_TO_T_UINT_2( 0x05, 0x00 ),
344 static const mbedtls_mpi_uint secp224k1_gx[] = {
345 BYTES_TO_T_UINT_8( 0x5C, 0xA4, 0xB7, 0xB6, 0x0E, 0x65, 0x7E, 0x0F ),
346 BYTES_TO_T_UINT_8( 0xA9, 0x75, 0x70, 0xE4, 0xE9, 0x67, 0xA4, 0x69 ),
347 BYTES_TO_T_UINT_8( 0xA1, 0x28, 0xFC, 0x30, 0xDF, 0x99, 0xF0, 0x4D ),
348 BYTES_TO_T_UINT_4( 0x33, 0x5B, 0x45, 0xA1 ),
350 static const mbedtls_mpi_uint secp224k1_gy[] = {
351 BYTES_TO_T_UINT_8( 0xA5, 0x61, 0x6D, 0x55, 0xDB, 0x4B, 0xCA, 0xE2 ),
352 BYTES_TO_T_UINT_8( 0x59, 0xBD, 0xB0, 0xC0, 0xF7, 0x19, 0xE3, 0xF7 ),
353 BYTES_TO_T_UINT_8( 0xD6, 0xFB, 0xCA, 0x82, 0x42, 0x34, 0xBA, 0x7F ),
354 BYTES_TO_T_UINT_4( 0xED, 0x9F, 0x08, 0x7E ),
356 static const mbedtls_mpi_uint secp224k1_n[] = {
357 BYTES_TO_T_UINT_8( 0xF7, 0xB1, 0x9F, 0x76, 0x71, 0xA9, 0xF0, 0xCA ),
358 BYTES_TO_T_UINT_8( 0x84, 0x61, 0xEC, 0xD2, 0xE8, 0xDC, 0x01, 0x00 ),
359 BYTES_TO_T_UINT_8( 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ),
360 BYTES_TO_T_UINT_8( 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00 ),
362 #endif /* MBEDTLS_ECP_DP_SECP224K1_ENABLED */
364 #if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
365 static const mbedtls_mpi_uint secp256k1_p[] = {
366 BYTES_TO_T_UINT_8( 0x2F, 0xFC, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF ),
367 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
368 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
369 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
371 static const mbedtls_mpi_uint secp256k1_a[] = {
372 BYTES_TO_T_UINT_2( 0x00, 0x00 ),
374 static const mbedtls_mpi_uint secp256k1_b[] = {
375 BYTES_TO_T_UINT_2( 0x07, 0x00 ),
377 static const mbedtls_mpi_uint secp256k1_gx[] = {
378 BYTES_TO_T_UINT_8( 0x98, 0x17, 0xF8, 0x16, 0x5B, 0x81, 0xF2, 0x59 ),
379 BYTES_TO_T_UINT_8( 0xD9, 0x28, 0xCE, 0x2D, 0xDB, 0xFC, 0x9B, 0x02 ),
380 BYTES_TO_T_UINT_8( 0x07, 0x0B, 0x87, 0xCE, 0x95, 0x62, 0xA0, 0x55 ),
381 BYTES_TO_T_UINT_8( 0xAC, 0xBB, 0xDC, 0xF9, 0x7E, 0x66, 0xBE, 0x79 ),
383 static const mbedtls_mpi_uint secp256k1_gy[] = {
384 BYTES_TO_T_UINT_8( 0xB8, 0xD4, 0x10, 0xFB, 0x8F, 0xD0, 0x47, 0x9C ),
385 BYTES_TO_T_UINT_8( 0x19, 0x54, 0x85, 0xA6, 0x48, 0xB4, 0x17, 0xFD ),
386 BYTES_TO_T_UINT_8( 0xA8, 0x08, 0x11, 0x0E, 0xFC, 0xFB, 0xA4, 0x5D ),
387 BYTES_TO_T_UINT_8( 0x65, 0xC4, 0xA3, 0x26, 0x77, 0xDA, 0x3A, 0x48 ),
389 static const mbedtls_mpi_uint secp256k1_n[] = {
390 BYTES_TO_T_UINT_8( 0x41, 0x41, 0x36, 0xD0, 0x8C, 0x5E, 0xD2, 0xBF ),
391 BYTES_TO_T_UINT_8( 0x3B, 0xA0, 0x48, 0xAF, 0xE6, 0xDC, 0xAE, 0xBA ),
392 BYTES_TO_T_UINT_8( 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
393 BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
395 #endif /* MBEDTLS_ECP_DP_SECP256K1_ENABLED */
398 * Domain parameters for brainpoolP256r1 (RFC 5639 3.4)
400 #if defined(MBEDTLS_ECP_DP_BP256R1_ENABLED)
401 static const mbedtls_mpi_uint brainpoolP256r1_p[] = {
402 BYTES_TO_T_UINT_8( 0x77, 0x53, 0x6E, 0x1F, 0x1D, 0x48, 0x13, 0x20 ),
403 BYTES_TO_T_UINT_8( 0x28, 0x20, 0x26, 0xD5, 0x23, 0xF6, 0x3B, 0x6E ),
404 BYTES_TO_T_UINT_8( 0x72, 0x8D, 0x83, 0x9D, 0x90, 0x0A, 0x66, 0x3E ),
405 BYTES_TO_T_UINT_8( 0xBC, 0xA9, 0xEE, 0xA1, 0xDB, 0x57, 0xFB, 0xA9 ),
407 static const mbedtls_mpi_uint brainpoolP256r1_a[] = {
408 BYTES_TO_T_UINT_8( 0xD9, 0xB5, 0x30, 0xF3, 0x44, 0x4B, 0x4A, 0xE9 ),
409 BYTES_TO_T_UINT_8( 0x6C, 0x5C, 0xDC, 0x26, 0xC1, 0x55, 0x80, 0xFB ),
410 BYTES_TO_T_UINT_8( 0xE7, 0xFF, 0x7A, 0x41, 0x30, 0x75, 0xF6, 0xEE ),
411 BYTES_TO_T_UINT_8( 0x57, 0x30, 0x2C, 0xFC, 0x75, 0x09, 0x5A, 0x7D ),
413 static const mbedtls_mpi_uint brainpoolP256r1_b[] = {
414 BYTES_TO_T_UINT_8( 0xB6, 0x07, 0x8C, 0xFF, 0x18, 0xDC, 0xCC, 0x6B ),
415 BYTES_TO_T_UINT_8( 0xCE, 0xE1, 0xF7, 0x5C, 0x29, 0x16, 0x84, 0x95 ),
416 BYTES_TO_T_UINT_8( 0xBF, 0x7C, 0xD7, 0xBB, 0xD9, 0xB5, 0x30, 0xF3 ),
417 BYTES_TO_T_UINT_8( 0x44, 0x4B, 0x4A, 0xE9, 0x6C, 0x5C, 0xDC, 0x26 ),
419 static const mbedtls_mpi_uint brainpoolP256r1_gx[] = {
420 BYTES_TO_T_UINT_8( 0x62, 0x32, 0xCE, 0x9A, 0xBD, 0x53, 0x44, 0x3A ),
421 BYTES_TO_T_UINT_8( 0xC2, 0x23, 0xBD, 0xE3, 0xE1, 0x27, 0xDE, 0xB9 ),
422 BYTES_TO_T_UINT_8( 0xAF, 0xB7, 0x81, 0xFC, 0x2F, 0x48, 0x4B, 0x2C ),
423 BYTES_TO_T_UINT_8( 0xCB, 0x57, 0x7E, 0xCB, 0xB9, 0xAE, 0xD2, 0x8B ),
425 static const mbedtls_mpi_uint brainpoolP256r1_gy[] = {
426 BYTES_TO_T_UINT_8( 0x97, 0x69, 0x04, 0x2F, 0xC7, 0x54, 0x1D, 0x5C ),
427 BYTES_TO_T_UINT_8( 0x54, 0x8E, 0xED, 0x2D, 0x13, 0x45, 0x77, 0xC2 ),
428 BYTES_TO_T_UINT_8( 0xC9, 0x1D, 0x61, 0x14, 0x1A, 0x46, 0xF8, 0x97 ),
429 BYTES_TO_T_UINT_8( 0xFD, 0xC4, 0xDA, 0xC3, 0x35, 0xF8, 0x7E, 0x54 ),
431 static const mbedtls_mpi_uint brainpoolP256r1_n[] = {
432 BYTES_TO_T_UINT_8( 0xA7, 0x56, 0x48, 0x97, 0x82, 0x0E, 0x1E, 0x90 ),
433 BYTES_TO_T_UINT_8( 0xF7, 0xA6, 0x61, 0xB5, 0xA3, 0x7A, 0x39, 0x8C ),
434 BYTES_TO_T_UINT_8( 0x71, 0x8D, 0x83, 0x9D, 0x90, 0x0A, 0x66, 0x3E ),
435 BYTES_TO_T_UINT_8( 0xBC, 0xA9, 0xEE, 0xA1, 0xDB, 0x57, 0xFB, 0xA9 ),
437 #endif /* MBEDTLS_ECP_DP_BP256R1_ENABLED */
440 * Domain parameters for brainpoolP384r1 (RFC 5639 3.6)
442 #if defined(MBEDTLS_ECP_DP_BP384R1_ENABLED)
443 static const mbedtls_mpi_uint brainpoolP384r1_p[] = {
444 BYTES_TO_T_UINT_8( 0x53, 0xEC, 0x07, 0x31, 0x13, 0x00, 0x47, 0x87 ),
445 BYTES_TO_T_UINT_8( 0x71, 0x1A, 0x1D, 0x90, 0x29, 0xA7, 0xD3, 0xAC ),
446 BYTES_TO_T_UINT_8( 0x23, 0x11, 0xB7, 0x7F, 0x19, 0xDA, 0xB1, 0x12 ),
447 BYTES_TO_T_UINT_8( 0xB4, 0x56, 0x54, 0xED, 0x09, 0x71, 0x2F, 0x15 ),
448 BYTES_TO_T_UINT_8( 0xDF, 0x41, 0xE6, 0x50, 0x7E, 0x6F, 0x5D, 0x0F ),
449 BYTES_TO_T_UINT_8( 0x28, 0x6D, 0x38, 0xA3, 0x82, 0x1E, 0xB9, 0x8C ),
451 static const mbedtls_mpi_uint brainpoolP384r1_a[] = {
452 BYTES_TO_T_UINT_8( 0x26, 0x28, 0xCE, 0x22, 0xDD, 0xC7, 0xA8, 0x04 ),
453 BYTES_TO_T_UINT_8( 0xEB, 0xD4, 0x3A, 0x50, 0x4A, 0x81, 0xA5, 0x8A ),
454 BYTES_TO_T_UINT_8( 0x0F, 0xF9, 0x91, 0xBA, 0xEF, 0x65, 0x91, 0x13 ),
455 BYTES_TO_T_UINT_8( 0x87, 0x27, 0xB2, 0x4F, 0x8E, 0xA2, 0xBE, 0xC2 ),
456 BYTES_TO_T_UINT_8( 0xA0, 0xAF, 0x05, 0xCE, 0x0A, 0x08, 0x72, 0x3C ),
457 BYTES_TO_T_UINT_8( 0x0C, 0x15, 0x8C, 0x3D, 0xC6, 0x82, 0xC3, 0x7B ),
459 static const mbedtls_mpi_uint brainpoolP384r1_b[] = {
460 BYTES_TO_T_UINT_8( 0x11, 0x4C, 0x50, 0xFA, 0x96, 0x86, 0xB7, 0x3A ),
461 BYTES_TO_T_UINT_8( 0x94, 0xC9, 0xDB, 0x95, 0x02, 0x39, 0xB4, 0x7C ),
462 BYTES_TO_T_UINT_8( 0xD5, 0x62, 0xEB, 0x3E, 0xA5, 0x0E, 0x88, 0x2E ),
463 BYTES_TO_T_UINT_8( 0xA6, 0xD2, 0xDC, 0x07, 0xE1, 0x7D, 0xB7, 0x2F ),
464 BYTES_TO_T_UINT_8( 0x7C, 0x44, 0xF0, 0x16, 0x54, 0xB5, 0x39, 0x8B ),
465 BYTES_TO_T_UINT_8( 0x26, 0x28, 0xCE, 0x22, 0xDD, 0xC7, 0xA8, 0x04 ),
467 static const mbedtls_mpi_uint brainpoolP384r1_gx[] = {
468 BYTES_TO_T_UINT_8( 0x1E, 0xAF, 0xD4, 0x47, 0xE2, 0xB2, 0x87, 0xEF ),
469 BYTES_TO_T_UINT_8( 0xAA, 0x46, 0xD6, 0x36, 0x34, 0xE0, 0x26, 0xE8 ),
470 BYTES_TO_T_UINT_8( 0xE8, 0x10, 0xBD, 0x0C, 0xFE, 0xCA, 0x7F, 0xDB ),
471 BYTES_TO_T_UINT_8( 0xE3, 0x4F, 0xF1, 0x7E, 0xE7, 0xA3, 0x47, 0x88 ),
472 BYTES_TO_T_UINT_8( 0x6B, 0x3F, 0xC1, 0xB7, 0x81, 0x3A, 0xA6, 0xA2 ),
473 BYTES_TO_T_UINT_8( 0xFF, 0x45, 0xCF, 0x68, 0xF0, 0x64, 0x1C, 0x1D ),
475 static const mbedtls_mpi_uint brainpoolP384r1_gy[] = {
476 BYTES_TO_T_UINT_8( 0x15, 0x53, 0x3C, 0x26, 0x41, 0x03, 0x82, 0x42 ),
477 BYTES_TO_T_UINT_8( 0x11, 0x81, 0x91, 0x77, 0x21, 0x46, 0x46, 0x0E ),
478 BYTES_TO_T_UINT_8( 0x28, 0x29, 0x91, 0xF9, 0x4F, 0x05, 0x9C, 0xE1 ),
479 BYTES_TO_T_UINT_8( 0x64, 0x58, 0xEC, 0xFE, 0x29, 0x0B, 0xB7, 0x62 ),
480 BYTES_TO_T_UINT_8( 0x52, 0xD5, 0xCF, 0x95, 0x8E, 0xEB, 0xB1, 0x5C ),
481 BYTES_TO_T_UINT_8( 0xA4, 0xC2, 0xF9, 0x20, 0x75, 0x1D, 0xBE, 0x8A ),
483 static const mbedtls_mpi_uint brainpoolP384r1_n[] = {
484 BYTES_TO_T_UINT_8( 0x65, 0x65, 0x04, 0xE9, 0x02, 0x32, 0x88, 0x3B ),
485 BYTES_TO_T_UINT_8( 0x10, 0xC3, 0x7F, 0x6B, 0xAF, 0xB6, 0x3A, 0xCF ),
486 BYTES_TO_T_UINT_8( 0xA7, 0x25, 0x04, 0xAC, 0x6C, 0x6E, 0x16, 0x1F ),
487 BYTES_TO_T_UINT_8( 0xB3, 0x56, 0x54, 0xED, 0x09, 0x71, 0x2F, 0x15 ),
488 BYTES_TO_T_UINT_8( 0xDF, 0x41, 0xE6, 0x50, 0x7E, 0x6F, 0x5D, 0x0F ),
489 BYTES_TO_T_UINT_8( 0x28, 0x6D, 0x38, 0xA3, 0x82, 0x1E, 0xB9, 0x8C ),
491 #endif /* MBEDTLS_ECP_DP_BP384R1_ENABLED */
494 * Domain parameters for brainpoolP512r1 (RFC 5639 3.7)
496 #if defined(MBEDTLS_ECP_DP_BP512R1_ENABLED)
497 static const mbedtls_mpi_uint brainpoolP512r1_p[] = {
498 BYTES_TO_T_UINT_8( 0xF3, 0x48, 0x3A, 0x58, 0x56, 0x60, 0xAA, 0x28 ),
499 BYTES_TO_T_UINT_8( 0x85, 0xC6, 0x82, 0x2D, 0x2F, 0xFF, 0x81, 0x28 ),
500 BYTES_TO_T_UINT_8( 0xE6, 0x80, 0xA3, 0xE6, 0x2A, 0xA1, 0xCD, 0xAE ),
501 BYTES_TO_T_UINT_8( 0x42, 0x68, 0xC6, 0x9B, 0x00, 0x9B, 0x4D, 0x7D ),
502 BYTES_TO_T_UINT_8( 0x71, 0x08, 0x33, 0x70, 0xCA, 0x9C, 0x63, 0xD6 ),
503 BYTES_TO_T_UINT_8( 0x0E, 0xD2, 0xC9, 0xB3, 0xB3, 0x8D, 0x30, 0xCB ),
504 BYTES_TO_T_UINT_8( 0x07, 0xFC, 0xC9, 0x33, 0xAE, 0xE6, 0xD4, 0x3F ),
505 BYTES_TO_T_UINT_8( 0x8B, 0xC4, 0xE9, 0xDB, 0xB8, 0x9D, 0xDD, 0xAA ),
507 static const mbedtls_mpi_uint brainpoolP512r1_a[] = {
508 BYTES_TO_T_UINT_8( 0xCA, 0x94, 0xFC, 0x77, 0x4D, 0xAC, 0xC1, 0xE7 ),
509 BYTES_TO_T_UINT_8( 0xB9, 0xC7, 0xF2, 0x2B, 0xA7, 0x17, 0x11, 0x7F ),
510 BYTES_TO_T_UINT_8( 0xB5, 0xC8, 0x9A, 0x8B, 0xC9, 0xF1, 0x2E, 0x0A ),
511 BYTES_TO_T_UINT_8( 0xA1, 0x3A, 0x25, 0xA8, 0x5A, 0x5D, 0xED, 0x2D ),
512 BYTES_TO_T_UINT_8( 0xBC, 0x63, 0x98, 0xEA, 0xCA, 0x41, 0x34, 0xA8 ),
513 BYTES_TO_T_UINT_8( 0x10, 0x16, 0xF9, 0x3D, 0x8D, 0xDD, 0xCB, 0x94 ),
514 BYTES_TO_T_UINT_8( 0xC5, 0x4C, 0x23, 0xAC, 0x45, 0x71, 0x32, 0xE2 ),
515 BYTES_TO_T_UINT_8( 0x89, 0x3B, 0x60, 0x8B, 0x31, 0xA3, 0x30, 0x78 ),
517 static const mbedtls_mpi_uint brainpoolP512r1_b[] = {
518 BYTES_TO_T_UINT_8( 0x23, 0xF7, 0x16, 0x80, 0x63, 0xBD, 0x09, 0x28 ),
519 BYTES_TO_T_UINT_8( 0xDD, 0xE5, 0xBA, 0x5E, 0xB7, 0x50, 0x40, 0x98 ),
520 BYTES_TO_T_UINT_8( 0x67, 0x3E, 0x08, 0xDC, 0xCA, 0x94, 0xFC, 0x77 ),
521 BYTES_TO_T_UINT_8( 0x4D, 0xAC, 0xC1, 0xE7, 0xB9, 0xC7, 0xF2, 0x2B ),
522 BYTES_TO_T_UINT_8( 0xA7, 0x17, 0x11, 0x7F, 0xB5, 0xC8, 0x9A, 0x8B ),
523 BYTES_TO_T_UINT_8( 0xC9, 0xF1, 0x2E, 0x0A, 0xA1, 0x3A, 0x25, 0xA8 ),
524 BYTES_TO_T_UINT_8( 0x5A, 0x5D, 0xED, 0x2D, 0xBC, 0x63, 0x98, 0xEA ),
525 BYTES_TO_T_UINT_8( 0xCA, 0x41, 0x34, 0xA8, 0x10, 0x16, 0xF9, 0x3D ),
527 static const mbedtls_mpi_uint brainpoolP512r1_gx[] = {
528 BYTES_TO_T_UINT_8( 0x22, 0xF8, 0xB9, 0xBC, 0x09, 0x22, 0x35, 0x8B ),
529 BYTES_TO_T_UINT_8( 0x68, 0x5E, 0x6A, 0x40, 0x47, 0x50, 0x6D, 0x7C ),
530 BYTES_TO_T_UINT_8( 0x5F, 0x7D, 0xB9, 0x93, 0x7B, 0x68, 0xD1, 0x50 ),
531 BYTES_TO_T_UINT_8( 0x8D, 0xD4, 0xD0, 0xE2, 0x78, 0x1F, 0x3B, 0xFF ),
532 BYTES_TO_T_UINT_8( 0x8E, 0x09, 0xD0, 0xF4, 0xEE, 0x62, 0x3B, 0xB4 ),
533 BYTES_TO_T_UINT_8( 0xC1, 0x16, 0xD9, 0xB5, 0x70, 0x9F, 0xED, 0x85 ),
534 BYTES_TO_T_UINT_8( 0x93, 0x6A, 0x4C, 0x9C, 0x2E, 0x32, 0x21, 0x5A ),
535 BYTES_TO_T_UINT_8( 0x64, 0xD9, 0x2E, 0xD8, 0xBD, 0xE4, 0xAE, 0x81 ),
537 static const mbedtls_mpi_uint brainpoolP512r1_gy[] = {
538 BYTES_TO_T_UINT_8( 0x92, 0x08, 0xD8, 0x3A, 0x0F, 0x1E, 0xCD, 0x78 ),
539 BYTES_TO_T_UINT_8( 0x06, 0x54, 0xF0, 0xA8, 0x2F, 0x2B, 0xCA, 0xD1 ),
540 BYTES_TO_T_UINT_8( 0xAE, 0x63, 0x27, 0x8A, 0xD8, 0x4B, 0xCA, 0x5B ),
541 BYTES_TO_T_UINT_8( 0x5E, 0x48, 0x5F, 0x4A, 0x49, 0xDE, 0xDC, 0xB2 ),
542 BYTES_TO_T_UINT_8( 0x11, 0x81, 0x1F, 0x88, 0x5B, 0xC5, 0x00, 0xA0 ),
543 BYTES_TO_T_UINT_8( 0x1A, 0x7B, 0xA5, 0x24, 0x00, 0xF7, 0x09, 0xF2 ),
544 BYTES_TO_T_UINT_8( 0xFD, 0x22, 0x78, 0xCF, 0xA9, 0xBF, 0xEA, 0xC0 ),
545 BYTES_TO_T_UINT_8( 0xEC, 0x32, 0x63, 0x56, 0x5D, 0x38, 0xDE, 0x7D ),
547 static const mbedtls_mpi_uint brainpoolP512r1_n[] = {
548 BYTES_TO_T_UINT_8( 0x69, 0x00, 0xA9, 0x9C, 0x82, 0x96, 0x87, 0xB5 ),
549 BYTES_TO_T_UINT_8( 0xDD, 0xDA, 0x5D, 0x08, 0x81, 0xD3, 0xB1, 0x1D ),
550 BYTES_TO_T_UINT_8( 0x47, 0x10, 0xAC, 0x7F, 0x19, 0x61, 0x86, 0x41 ),
551 BYTES_TO_T_UINT_8( 0x19, 0x26, 0xA9, 0x4C, 0x41, 0x5C, 0x3E, 0x55 ),
552 BYTES_TO_T_UINT_8( 0x70, 0x08, 0x33, 0x70, 0xCA, 0x9C, 0x63, 0xD6 ),
553 BYTES_TO_T_UINT_8( 0x0E, 0xD2, 0xC9, 0xB3, 0xB3, 0x8D, 0x30, 0xCB ),
554 BYTES_TO_T_UINT_8( 0x07, 0xFC, 0xC9, 0x33, 0xAE, 0xE6, 0xD4, 0x3F ),
555 BYTES_TO_T_UINT_8( 0x8B, 0xC4, 0xE9, 0xDB, 0xB8, 0x9D, 0xDD, 0xAA ),
557 #endif /* MBEDTLS_ECP_DP_BP512R1_ENABLED */
560 * Create an MPI from embedded constants
561 * (assumes len is an exact multiple of sizeof mbedtls_mpi_uint)
563 static inline void ecp_mpi_load( mbedtls_mpi *X, const mbedtls_mpi_uint *p, size_t len )
566 X->n = len / sizeof( mbedtls_mpi_uint );
567 X->p = (mbedtls_mpi_uint *) p;
571 * Set an MPI to static value 1
573 static inline void ecp_mpi_set1( mbedtls_mpi *X )
575 static mbedtls_mpi_uint one[] = { 1 };
582 * Make group available from embedded constants
584 static int ecp_group_load( mbedtls_ecp_group *grp,
585 const mbedtls_mpi_uint *p, size_t plen,
586 const mbedtls_mpi_uint *a, size_t alen,
587 const mbedtls_mpi_uint *b, size_t blen,
588 const mbedtls_mpi_uint *gx, size_t gxlen,
589 const mbedtls_mpi_uint *gy, size_t gylen,
590 const mbedtls_mpi_uint *n, size_t nlen)
592 ecp_mpi_load( &grp->P, p, plen );
594 ecp_mpi_load( &grp->A, a, alen );
595 ecp_mpi_load( &grp->B, b, blen );
596 ecp_mpi_load( &grp->N, n, nlen );
598 ecp_mpi_load( &grp->G.X, gx, gxlen );
599 ecp_mpi_load( &grp->G.Y, gy, gylen );
600 ecp_mpi_set1( &grp->G.Z );
602 grp->pbits = mbedtls_mpi_bitlen( &grp->P );
603 grp->nbits = mbedtls_mpi_bitlen( &grp->N );
610 #if defined(MBEDTLS_ECP_NIST_OPTIM)
611 /* Forward declarations */
612 #if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
613 static int ecp_mod_p192( mbedtls_mpi * );
615 #if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
616 static int ecp_mod_p224( mbedtls_mpi * );
618 #if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
619 static int ecp_mod_p256( mbedtls_mpi * );
621 #if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
622 static int ecp_mod_p384( mbedtls_mpi * );
624 #if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
625 static int ecp_mod_p521( mbedtls_mpi * );
628 #define NIST_MODP( P ) grp->modp = ecp_mod_ ## P;
630 #define NIST_MODP( P )
631 #endif /* MBEDTLS_ECP_NIST_OPTIM */
633 /* Additional forward declarations */
634 #if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
635 static int ecp_mod_p255( mbedtls_mpi * );
637 #if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
638 static int ecp_mod_p448( mbedtls_mpi * );
640 #if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
641 static int ecp_mod_p192k1( mbedtls_mpi * );
643 #if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
644 static int ecp_mod_p224k1( mbedtls_mpi * );
646 #if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
647 static int ecp_mod_p256k1( mbedtls_mpi * );
650 #define LOAD_GROUP_A( G ) ecp_group_load( grp, \
651 G ## _p, sizeof( G ## _p ), \
652 G ## _a, sizeof( G ## _a ), \
653 G ## _b, sizeof( G ## _b ), \
654 G ## _gx, sizeof( G ## _gx ), \
655 G ## _gy, sizeof( G ## _gy ), \
656 G ## _n, sizeof( G ## _n ) )
658 #define LOAD_GROUP( G ) ecp_group_load( grp, \
659 G ## _p, sizeof( G ## _p ), \
661 G ## _b, sizeof( G ## _b ), \
662 G ## _gx, sizeof( G ## _gx ), \
663 G ## _gy, sizeof( G ## _gy ), \
664 G ## _n, sizeof( G ## _n ) )
666 #if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
668 * Specialized function for creating the Curve25519 group
670 static int ecp_use_curve25519( mbedtls_ecp_group *grp )
674 /* Actually ( A + 2 ) / 4 */
675 MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &grp->A, 16, "01DB42" ) );
678 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->P, 1 ) );
679 MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &grp->P, 255 ) );
680 MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &grp->P, &grp->P, 19 ) );
681 grp->pbits = mbedtls_mpi_bitlen( &grp->P );
683 /* N = 2^252 + 27742317777372353535851937790883648493 */
684 MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &grp->N, 16,
685 "14DEF9DEA2F79CD65812631A5CF5D3ED" ) );
686 MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( &grp->N, 252, 1 ) );
688 /* Y intentionally not set, since we use x/z coordinates.
689 * This is used as a marker to identify Montgomery curves! */
690 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.X, 9 ) );
691 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.Z, 1 ) );
692 mbedtls_mpi_free( &grp->G.Y );
694 /* Actually, the required msb for private keys */
699 mbedtls_ecp_group_free( grp );
703 #endif /* MBEDTLS_ECP_DP_CURVE25519_ENABLED */
705 #if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
707 * Specialized function for creating the Curve448 group
709 static int ecp_use_curve448( mbedtls_ecp_group *grp )
714 mbedtls_mpi_init( &Ns );
716 /* Actually ( A + 2 ) / 4 */
717 MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &grp->A, 16, "98AA" ) );
719 /* P = 2^448 - 2^224 - 1 */
720 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->P, 1 ) );
721 MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &grp->P, 224 ) );
722 MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &grp->P, &grp->P, 1 ) );
723 MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &grp->P, 224 ) );
724 MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &grp->P, &grp->P, 1 ) );
725 grp->pbits = mbedtls_mpi_bitlen( &grp->P );
727 /* Y intentionally not set, since we use x/z coordinates.
728 * This is used as a marker to identify Montgomery curves! */
729 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.X, 5 ) );
730 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.Z, 1 ) );
731 mbedtls_mpi_free( &grp->G.Y );
733 /* N = 2^446 - 13818066809895115352007386748515426880336692474882178609894547503885 */
734 MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( &grp->N, 446, 1 ) );
735 MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &Ns, 16,
736 "8335DC163BB124B65129C96FDE933D8D723A70AADC873D6D54A7BB0D" ) );
737 MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &grp->N, &grp->N, &Ns ) );
739 /* Actually, the required msb for private keys */
743 mbedtls_mpi_free( &Ns );
745 mbedtls_ecp_group_free( grp );
749 #endif /* MBEDTLS_ECP_DP_CURVE448_ENABLED */
752 * Set a group using well-known domain parameters
754 int mbedtls_ecp_group_load( mbedtls_ecp_group *grp, mbedtls_ecp_group_id id )
756 ECP_VALIDATE_RET( grp != NULL );
757 mbedtls_ecp_group_free( grp );
763 #if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
764 case MBEDTLS_ECP_DP_SECP192R1:
766 return( LOAD_GROUP( secp192r1 ) );
767 #endif /* MBEDTLS_ECP_DP_SECP192R1_ENABLED */
769 #if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
770 case MBEDTLS_ECP_DP_SECP224R1:
772 return( LOAD_GROUP( secp224r1 ) );
773 #endif /* MBEDTLS_ECP_DP_SECP224R1_ENABLED */
775 #if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
776 case MBEDTLS_ECP_DP_SECP256R1:
778 return( LOAD_GROUP( secp256r1 ) );
779 #endif /* MBEDTLS_ECP_DP_SECP256R1_ENABLED */
781 #if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
782 case MBEDTLS_ECP_DP_SECP384R1:
784 return( LOAD_GROUP( secp384r1 ) );
785 #endif /* MBEDTLS_ECP_DP_SECP384R1_ENABLED */
787 #if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
788 case MBEDTLS_ECP_DP_SECP521R1:
790 return( LOAD_GROUP( secp521r1 ) );
791 #endif /* MBEDTLS_ECP_DP_SECP521R1_ENABLED */
793 #if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
794 case MBEDTLS_ECP_DP_SECP192K1:
795 grp->modp = ecp_mod_p192k1;
796 return( LOAD_GROUP_A( secp192k1 ) );
797 #endif /* MBEDTLS_ECP_DP_SECP192K1_ENABLED */
799 #if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
800 case MBEDTLS_ECP_DP_SECP224K1:
801 grp->modp = ecp_mod_p224k1;
802 return( LOAD_GROUP_A( secp224k1 ) );
803 #endif /* MBEDTLS_ECP_DP_SECP224K1_ENABLED */
805 #if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
806 case MBEDTLS_ECP_DP_SECP256K1:
807 grp->modp = ecp_mod_p256k1;
808 return( LOAD_GROUP_A( secp256k1 ) );
809 #endif /* MBEDTLS_ECP_DP_SECP256K1_ENABLED */
811 #if defined(MBEDTLS_ECP_DP_BP256R1_ENABLED)
812 case MBEDTLS_ECP_DP_BP256R1:
813 return( LOAD_GROUP_A( brainpoolP256r1 ) );
814 #endif /* MBEDTLS_ECP_DP_BP256R1_ENABLED */
816 #if defined(MBEDTLS_ECP_DP_BP384R1_ENABLED)
817 case MBEDTLS_ECP_DP_BP384R1:
818 return( LOAD_GROUP_A( brainpoolP384r1 ) );
819 #endif /* MBEDTLS_ECP_DP_BP384R1_ENABLED */
821 #if defined(MBEDTLS_ECP_DP_BP512R1_ENABLED)
822 case MBEDTLS_ECP_DP_BP512R1:
823 return( LOAD_GROUP_A( brainpoolP512r1 ) );
824 #endif /* MBEDTLS_ECP_DP_BP512R1_ENABLED */
826 #if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
827 case MBEDTLS_ECP_DP_CURVE25519:
828 grp->modp = ecp_mod_p255;
829 return( ecp_use_curve25519( grp ) );
830 #endif /* MBEDTLS_ECP_DP_CURVE25519_ENABLED */
832 #if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
833 case MBEDTLS_ECP_DP_CURVE448:
834 grp->modp = ecp_mod_p448;
835 return( ecp_use_curve448( grp ) );
836 #endif /* MBEDTLS_ECP_DP_CURVE448_ENABLED */
839 mbedtls_ecp_group_free( grp );
840 return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
844 #if defined(MBEDTLS_ECP_NIST_OPTIM)
846 * Fast reduction modulo the primes used by the NIST curves.
848 * These functions are critical for speed, but not needed for correct
849 * operations. So, we make the choice to heavily rely on the internals of our
850 * bignum library, which creates a tight coupling between these functions and
851 * our MPI implementation. However, the coupling between the ECP module and
852 * MPI remains loose, since these functions can be deactivated at will.
855 #if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
857 * Compared to the way things are presented in FIPS 186-3 D.2,
858 * we proceed in columns, from right (least significant chunk) to left,
859 * adding chunks to N in place, and keeping a carry for the next chunk.
860 * This avoids moving things around in memory, and uselessly adding zeros,
861 * compared to the more straightforward, line-oriented approach.
863 * For this prime we need to handle data in chunks of 64 bits.
864 * Since this is always a multiple of our basic mbedtls_mpi_uint, we can
865 * use a mbedtls_mpi_uint * to designate such a chunk, and small loops to handle it.
868 /* Add 64-bit chunks (dst += src) and update carry */
869 static inline void add64( mbedtls_mpi_uint *dst, mbedtls_mpi_uint *src, mbedtls_mpi_uint *carry )
872 mbedtls_mpi_uint c = 0;
873 for( i = 0; i < 8 / sizeof( mbedtls_mpi_uint ); i++, dst++, src++ )
875 *dst += c; c = ( *dst < c );
876 *dst += *src; c += ( *dst < *src );
881 /* Add carry to a 64-bit chunk and update carry */
882 static inline void carry64( mbedtls_mpi_uint *dst, mbedtls_mpi_uint *carry )
885 for( i = 0; i < 8 / sizeof( mbedtls_mpi_uint ); i++, dst++ )
888 *carry = ( *dst < *carry );
892 #define WIDTH 8 / sizeof( mbedtls_mpi_uint )
893 #define A( i ) N->p + (i) * WIDTH
894 #define ADD( i ) add64( p, A( i ), &c )
895 #define NEXT p += WIDTH; carry64( p, &c )
896 #define LAST p += WIDTH; *p = c; while( ++p < end ) *p = 0
899 * Fast quasi-reduction modulo p192 (FIPS 186-3 D.2.1)
901 static int ecp_mod_p192( mbedtls_mpi *N )
904 mbedtls_mpi_uint c = 0;
905 mbedtls_mpi_uint *p, *end;
907 /* Make sure we have enough blocks so that A(5) is legal */
908 MBEDTLS_MPI_CHK( mbedtls_mpi_grow( N, 6 * WIDTH ) );
913 ADD( 3 ); ADD( 5 ); NEXT; // A0 += A3 + A5
914 ADD( 3 ); ADD( 4 ); ADD( 5 ); NEXT; // A1 += A3 + A4 + A5
915 ADD( 4 ); ADD( 5 ); LAST; // A2 += A4 + A5
926 #endif /* MBEDTLS_ECP_DP_SECP192R1_ENABLED */
928 #if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED) || \
929 defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED) || \
930 defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
932 * The reader is advised to first understand ecp_mod_p192() since the same
933 * general structure is used here, but with additional complications:
934 * (1) chunks of 32 bits, and (2) subtractions.
938 * For these primes, we need to handle data in chunks of 32 bits.
939 * This makes it more complicated if we use 64 bits limbs in MPI,
940 * which prevents us from using a uniform access method as for p192.
942 * So, we define a mini abstraction layer to access 32 bit chunks,
943 * load them in 'cur' for work, and store them back from 'cur' when done.
945 * While at it, also define the size of N in terms of 32-bit chunks.
947 #define LOAD32 cur = A( i );
949 #if defined(MBEDTLS_HAVE_INT32) /* 32 bit */
952 #define A( j ) N->p[j]
953 #define STORE32 N->p[i] = cur;
957 #define MAX32 N->n * 2
958 #define A( j ) (j) % 2 ? (uint32_t)( N->p[(j)/2] >> 32 ) : \
959 (uint32_t)( N->p[(j)/2] )
962 N->p[i/2] &= 0x00000000FFFFFFFF; \
963 N->p[i/2] |= ((mbedtls_mpi_uint) cur) << 32; \
965 N->p[i/2] &= 0xFFFFFFFF00000000; \
966 N->p[i/2] |= (mbedtls_mpi_uint) cur; \
969 #endif /* sizeof( mbedtls_mpi_uint ) */
972 * Helpers for addition and subtraction of chunks, with signed carry.
974 static inline void add32( uint32_t *dst, uint32_t src, signed char *carry )
977 *carry += ( *dst < src );
980 static inline void sub32( uint32_t *dst, uint32_t src, signed char *carry )
982 *carry -= ( *dst < src );
986 #define ADD( j ) add32( &cur, A( j ), &c );
987 #define SUB( j ) sub32( &cur, A( j ), &c );
990 * Helpers for the main 'loop'
991 * (see fix_negative for the motivation of C)
995 signed char c = 0, cc; \
997 size_t i = 0, bits = (b); \
999 mbedtls_mpi_uint Cp[ (b) / 8 / sizeof( mbedtls_mpi_uint) + 1 ]; \
1002 C.n = (b) / 8 / sizeof( mbedtls_mpi_uint) + 1; \
1004 memset( Cp, 0, C.n * sizeof( mbedtls_mpi_uint ) ); \
1006 MBEDTLS_MPI_CHK( mbedtls_mpi_grow( N, (b) * 2 / 8 / \
1007 sizeof( mbedtls_mpi_uint ) ) ); \
1011 STORE32; i++; LOAD32; \
1014 sub32( &cur, -cc, &c ); \
1016 add32( &cur, cc, &c ); \
1020 cur = c > 0 ? c : 0; STORE32; \
1021 cur = 0; while( ++i < MAX32 ) { STORE32; } \
1022 if( c < 0 ) fix_negative( N, c, &C, bits );
1025 * If the result is negative, we get it in the form
1026 * c * 2^(bits + 32) + N, with c negative and N positive shorter than 'bits'
1028 static inline int fix_negative( mbedtls_mpi *N, signed char c, mbedtls_mpi *C, size_t bits )
1032 /* C = - c * 2^(bits + 32) */
1033 #if !defined(MBEDTLS_HAVE_INT64)
1037 C->p[ C->n - 1 ] = ((mbedtls_mpi_uint) -c) << 32;
1040 C->p[ C->n - 1 ] = (mbedtls_mpi_uint) -c;
1042 /* N = - ( C - N ) */
1043 MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( N, C, N ) );
1051 #if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
1053 * Fast quasi-reduction modulo p224 (FIPS 186-3 D.2.2)
1055 static int ecp_mod_p224( mbedtls_mpi *N )
1059 SUB( 7 ); SUB( 11 ); NEXT; // A0 += -A7 - A11
1060 SUB( 8 ); SUB( 12 ); NEXT; // A1 += -A8 - A12
1061 SUB( 9 ); SUB( 13 ); NEXT; // A2 += -A9 - A13
1062 SUB( 10 ); ADD( 7 ); ADD( 11 ); NEXT; // A3 += -A10 + A7 + A11
1063 SUB( 11 ); ADD( 8 ); ADD( 12 ); NEXT; // A4 += -A11 + A8 + A12
1064 SUB( 12 ); ADD( 9 ); ADD( 13 ); NEXT; // A5 += -A12 + A9 + A13
1065 SUB( 13 ); ADD( 10 ); LAST; // A6 += -A13 + A10
1070 #endif /* MBEDTLS_ECP_DP_SECP224R1_ENABLED */
1072 #if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
1074 * Fast quasi-reduction modulo p256 (FIPS 186-3 D.2.3)
1076 static int ecp_mod_p256( mbedtls_mpi *N )
1081 SUB( 11 ); SUB( 12 ); SUB( 13 ); SUB( 14 ); NEXT; // A0
1083 ADD( 9 ); ADD( 10 );
1084 SUB( 12 ); SUB( 13 ); SUB( 14 ); SUB( 15 ); NEXT; // A1
1086 ADD( 10 ); ADD( 11 );
1087 SUB( 13 ); SUB( 14 ); SUB( 15 ); NEXT; // A2
1089 ADD( 11 ); ADD( 11 ); ADD( 12 ); ADD( 12 ); ADD( 13 );
1090 SUB( 15 ); SUB( 8 ); SUB( 9 ); NEXT; // A3
1092 ADD( 12 ); ADD( 12 ); ADD( 13 ); ADD( 13 ); ADD( 14 );
1093 SUB( 9 ); SUB( 10 ); NEXT; // A4
1095 ADD( 13 ); ADD( 13 ); ADD( 14 ); ADD( 14 ); ADD( 15 );
1096 SUB( 10 ); SUB( 11 ); NEXT; // A5
1098 ADD( 14 ); ADD( 14 ); ADD( 15 ); ADD( 15 ); ADD( 14 ); ADD( 13 );
1099 SUB( 8 ); SUB( 9 ); NEXT; // A6
1101 ADD( 15 ); ADD( 15 ); ADD( 15 ); ADD( 8 );
1102 SUB( 10 ); SUB( 11 ); SUB( 12 ); SUB( 13 ); LAST; // A7
1107 #endif /* MBEDTLS_ECP_DP_SECP256R1_ENABLED */
1109 #if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
1111 * Fast quasi-reduction modulo p384 (FIPS 186-3 D.2.4)
1113 static int ecp_mod_p384( mbedtls_mpi *N )
1117 ADD( 12 ); ADD( 21 ); ADD( 20 );
1118 SUB( 23 ); NEXT; // A0
1120 ADD( 13 ); ADD( 22 ); ADD( 23 );
1121 SUB( 12 ); SUB( 20 ); NEXT; // A2
1123 ADD( 14 ); ADD( 23 );
1124 SUB( 13 ); SUB( 21 ); NEXT; // A2
1126 ADD( 15 ); ADD( 12 ); ADD( 20 ); ADD( 21 );
1127 SUB( 14 ); SUB( 22 ); SUB( 23 ); NEXT; // A3
1129 ADD( 21 ); ADD( 21 ); ADD( 16 ); ADD( 13 ); ADD( 12 ); ADD( 20 ); ADD( 22 );
1130 SUB( 15 ); SUB( 23 ); SUB( 23 ); NEXT; // A4
1132 ADD( 22 ); ADD( 22 ); ADD( 17 ); ADD( 14 ); ADD( 13 ); ADD( 21 ); ADD( 23 );
1133 SUB( 16 ); NEXT; // A5
1135 ADD( 23 ); ADD( 23 ); ADD( 18 ); ADD( 15 ); ADD( 14 ); ADD( 22 );
1136 SUB( 17 ); NEXT; // A6
1138 ADD( 19 ); ADD( 16 ); ADD( 15 ); ADD( 23 );
1139 SUB( 18 ); NEXT; // A7
1141 ADD( 20 ); ADD( 17 ); ADD( 16 );
1142 SUB( 19 ); NEXT; // A8
1144 ADD( 21 ); ADD( 18 ); ADD( 17 );
1145 SUB( 20 ); NEXT; // A9
1147 ADD( 22 ); ADD( 19 ); ADD( 18 );
1148 SUB( 21 ); NEXT; // A10
1150 ADD( 23 ); ADD( 20 ); ADD( 19 );
1151 SUB( 22 ); LAST; // A11
1156 #endif /* MBEDTLS_ECP_DP_SECP384R1_ENABLED */
1166 #endif /* MBEDTLS_ECP_DP_SECP224R1_ENABLED ||
1167 MBEDTLS_ECP_DP_SECP256R1_ENABLED ||
1168 MBEDTLS_ECP_DP_SECP384R1_ENABLED */
1170 #if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
1172 * Here we have an actual Mersenne prime, so things are more straightforward.
1173 * However, chunks are aligned on a 'weird' boundary (521 bits).
1176 /* Size of p521 in terms of mbedtls_mpi_uint */
1177 #define P521_WIDTH ( 521 / 8 / sizeof( mbedtls_mpi_uint ) + 1 )
1179 /* Bits to keep in the most significant mbedtls_mpi_uint */
1180 #define P521_MASK 0x01FF
1183 * Fast quasi-reduction modulo p521 (FIPS 186-3 D.2.5)
1184 * Write N as A1 + 2^521 A0, return A0 + A1
1186 static int ecp_mod_p521( mbedtls_mpi *N )
1191 mbedtls_mpi_uint Mp[P521_WIDTH + 1];
1192 /* Worst case for the size of M is when mbedtls_mpi_uint is 16 bits:
1193 * we need to hold bits 513 to 1056, which is 34 limbs, that is
1194 * P521_WIDTH + 1. Otherwise P521_WIDTH is enough. */
1196 if( N->n < P521_WIDTH )
1201 M.n = N->n - ( P521_WIDTH - 1 );
1202 if( M.n > P521_WIDTH + 1 )
1203 M.n = P521_WIDTH + 1;
1205 memcpy( Mp, N->p + P521_WIDTH - 1, M.n * sizeof( mbedtls_mpi_uint ) );
1206 MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &M, 521 % ( 8 * sizeof( mbedtls_mpi_uint ) ) ) );
1209 N->p[P521_WIDTH - 1] &= P521_MASK;
1210 for( i = P521_WIDTH; i < N->n; i++ )
1214 MBEDTLS_MPI_CHK( mbedtls_mpi_add_abs( N, N, &M ) );
1222 #endif /* MBEDTLS_ECP_DP_SECP521R1_ENABLED */
1224 #endif /* MBEDTLS_ECP_NIST_OPTIM */
1226 #if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
1228 /* Size of p255 in terms of mbedtls_mpi_uint */
1229 #define P255_WIDTH ( 255 / 8 / sizeof( mbedtls_mpi_uint ) + 1 )
1232 * Fast quasi-reduction modulo p255 = 2^255 - 19
1233 * Write N as A0 + 2^255 A1, return A0 + 19 * A1
1235 static int ecp_mod_p255( mbedtls_mpi *N )
1240 mbedtls_mpi_uint Mp[P255_WIDTH + 2];
1242 if( N->n < P255_WIDTH )
1247 M.n = N->n - ( P255_WIDTH - 1 );
1248 if( M.n > P255_WIDTH + 1 )
1249 return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
1251 memset( Mp, 0, sizeof Mp );
1252 memcpy( Mp, N->p + P255_WIDTH - 1, M.n * sizeof( mbedtls_mpi_uint ) );
1253 MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &M, 255 % ( 8 * sizeof( mbedtls_mpi_uint ) ) ) );
1254 M.n++; /* Make room for multiplication by 19 */
1257 MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( N, 255, 0 ) );
1258 for( i = P255_WIDTH; i < N->n; i++ )
1261 /* N = A0 + 19 * A1 */
1262 MBEDTLS_MPI_CHK( mbedtls_mpi_mul_int( &M, &M, 19 ) );
1263 MBEDTLS_MPI_CHK( mbedtls_mpi_add_abs( N, N, &M ) );
1268 #endif /* MBEDTLS_ECP_DP_CURVE25519_ENABLED */
1270 #if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
1272 /* Size of p448 in terms of mbedtls_mpi_uint */
1273 #define P448_WIDTH ( 448 / 8 / sizeof( mbedtls_mpi_uint ) )
1275 /* Number of limbs fully occupied by 2^224 (max), and limbs used by it (min) */
1276 #define DIV_ROUND_UP( X, Y ) ( ( ( X ) + ( Y ) - 1 ) / ( Y ) )
1277 #define P224_WIDTH_MIN ( 28 / sizeof( mbedtls_mpi_uint ) )
1278 #define P224_WIDTH_MAX DIV_ROUND_UP( 28, sizeof( mbedtls_mpi_uint ) )
1279 #define P224_UNUSED_BITS ( ( P224_WIDTH_MAX * sizeof( mbedtls_mpi_uint ) * 8 ) - 224 )
1282 * Fast quasi-reduction modulo p448 = 2^448 - 2^224 - 1
1283 * Write N as A0 + 2^448 A1 and A1 as B0 + 2^224 B1, and return
1284 * A0 + A1 + B1 + (B0 + B1) * 2^224. This is different to the reference
1285 * implementation of Curve448, which uses its own special 56-bit limbs rather
1286 * than a generic bignum library. We could squeeze some extra speed out on
1287 * 32-bit machines by splitting N up into 32-bit limbs and doing the
1288 * arithmetic using the limbs directly as we do for the NIST primes above,
1289 * but for 64-bit targets it should use half the number of operations if we do
1290 * the reduction with 224-bit limbs, since mpi_add_mpi will then use 64-bit adds.
1292 static int ecp_mod_p448( mbedtls_mpi *N )
1297 mbedtls_mpi_uint Mp[P448_WIDTH + 1], Qp[P448_WIDTH];
1299 if( N->n <= P448_WIDTH )
1304 M.n = N->n - ( P448_WIDTH );
1305 if( M.n > P448_WIDTH )
1306 /* Shouldn't be called with N larger than 2^896! */
1307 return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
1309 memset( Mp, 0, sizeof( Mp ) );
1310 memcpy( Mp, N->p + P448_WIDTH, M.n * sizeof( mbedtls_mpi_uint ) );
1313 for( i = P448_WIDTH; i < N->n; i++ )
1317 MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( N, N, &M ) );
1319 /* Q = B1, N += B1 */
1322 memcpy( Qp, Mp, sizeof( Qp ) );
1323 MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &Q, 224 ) );
1324 MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( N, N, &Q ) );
1326 /* M = (B0 + B1) * 2^224, N += M */
1327 if( sizeof( mbedtls_mpi_uint ) > 4 )
1328 Mp[P224_WIDTH_MIN] &= ( (mbedtls_mpi_uint)-1 ) >> ( P224_UNUSED_BITS );
1329 for( i = P224_WIDTH_MAX; i < M.n; ++i )
1331 MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &M, &M, &Q ) );
1332 M.n = P448_WIDTH + 1; /* Make room for shifted carry bit from the addition */
1333 MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &M, 224 ) );
1334 MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( N, N, &M ) );
1339 #endif /* MBEDTLS_ECP_DP_CURVE448_ENABLED */
1341 #if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED) || \
1342 defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED) || \
1343 defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
1345 * Fast quasi-reduction modulo P = 2^s - R,
1346 * with R about 33 bits, used by the Koblitz curves.
1348 * Write N as A0 + 2^224 A1, return A0 + R * A1.
1349 * Actually do two passes, since R is big.
1351 #define P_KOBLITZ_MAX ( 256 / 8 / sizeof( mbedtls_mpi_uint ) ) // Max limbs in P
1352 #define P_KOBLITZ_R ( 8 / sizeof( mbedtls_mpi_uint ) ) // Limbs in R
1353 static inline int ecp_mod_koblitz( mbedtls_mpi *N, mbedtls_mpi_uint *Rp, size_t p_limbs,
1354 size_t adjust, size_t shift, mbedtls_mpi_uint mask )
1359 mbedtls_mpi_uint Mp[P_KOBLITZ_MAX + P_KOBLITZ_R + 1];
1361 if( N->n < p_limbs )
1369 /* Common setup for M */
1374 M.n = N->n - ( p_limbs - adjust );
1375 if( M.n > p_limbs + adjust )
1376 M.n = p_limbs + adjust;
1377 memset( Mp, 0, sizeof Mp );
1378 memcpy( Mp, N->p + p_limbs - adjust, M.n * sizeof( mbedtls_mpi_uint ) );
1380 MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &M, shift ) );
1381 M.n += R.n; /* Make room for multiplication by R */
1385 N->p[p_limbs - 1] &= mask;
1386 for( i = p_limbs; i < N->n; i++ )
1389 /* N = A0 + R * A1 */
1390 MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &M, &M, &R ) );
1391 MBEDTLS_MPI_CHK( mbedtls_mpi_add_abs( N, N, &M ) );
1396 M.n = N->n - ( p_limbs - adjust );
1397 if( M.n > p_limbs + adjust )
1398 M.n = p_limbs + adjust;
1399 memset( Mp, 0, sizeof Mp );
1400 memcpy( Mp, N->p + p_limbs - adjust, M.n * sizeof( mbedtls_mpi_uint ) );
1402 MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &M, shift ) );
1403 M.n += R.n; /* Make room for multiplication by R */
1407 N->p[p_limbs - 1] &= mask;
1408 for( i = p_limbs; i < N->n; i++ )
1411 /* N = A0 + R * A1 */
1412 MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &M, &M, &R ) );
1413 MBEDTLS_MPI_CHK( mbedtls_mpi_add_abs( N, N, &M ) );
1418 #endif /* MBEDTLS_ECP_DP_SECP192K1_ENABLED) ||
1419 MBEDTLS_ECP_DP_SECP224K1_ENABLED) ||
1420 MBEDTLS_ECP_DP_SECP256K1_ENABLED) */
1422 #if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
1424 * Fast quasi-reduction modulo p192k1 = 2^192 - R,
1425 * with R = 2^32 + 2^12 + 2^8 + 2^7 + 2^6 + 2^3 + 1 = 0x0100001119
1427 static int ecp_mod_p192k1( mbedtls_mpi *N )
1429 static mbedtls_mpi_uint Rp[] = {
1430 BYTES_TO_T_UINT_8( 0xC9, 0x11, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00 ) };
1432 return( ecp_mod_koblitz( N, Rp, 192 / 8 / sizeof( mbedtls_mpi_uint ), 0, 0, 0 ) );
1434 #endif /* MBEDTLS_ECP_DP_SECP192K1_ENABLED */
1436 #if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
1438 * Fast quasi-reduction modulo p224k1 = 2^224 - R,
1439 * with R = 2^32 + 2^12 + 2^11 + 2^9 + 2^7 + 2^4 + 2 + 1 = 0x0100001A93
1441 static int ecp_mod_p224k1( mbedtls_mpi *N )
1443 static mbedtls_mpi_uint Rp[] = {
1444 BYTES_TO_T_UINT_8( 0x93, 0x1A, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00 ) };
1446 #if defined(MBEDTLS_HAVE_INT64)
1447 return( ecp_mod_koblitz( N, Rp, 4, 1, 32, 0xFFFFFFFF ) );
1449 return( ecp_mod_koblitz( N, Rp, 224 / 8 / sizeof( mbedtls_mpi_uint ), 0, 0, 0 ) );
1453 #endif /* MBEDTLS_ECP_DP_SECP224K1_ENABLED */
1455 #if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
1457 * Fast quasi-reduction modulo p256k1 = 2^256 - R,
1458 * with R = 2^32 + 2^9 + 2^8 + 2^7 + 2^6 + 2^4 + 1 = 0x01000003D1
1460 static int ecp_mod_p256k1( mbedtls_mpi *N )
1462 static mbedtls_mpi_uint Rp[] = {
1463 BYTES_TO_T_UINT_8( 0xD1, 0x03, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00 ) };
1464 return( ecp_mod_koblitz( N, Rp, 256 / 8 / sizeof( mbedtls_mpi_uint ), 0, 0, 0 ) );
1466 #endif /* MBEDTLS_ECP_DP_SECP256K1_ENABLED */
1468 #endif /* !MBEDTLS_ECP_ALT */
1470 #endif /* MBEDTLS_ECP_C */