Line data Source code
1 : /*
2 : * FIPS-197 compliant AES implementation
3 : *
4 : * Copyright The Mbed TLS Contributors
5 : * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
6 : */
7 : /*
8 : * The AES block cipher was designed by Vincent Rijmen and Joan Daemen.
9 : *
10 : * https://csrc.nist.gov/csrc/media/projects/cryptographic-standards-and-guidelines/documents/aes-development/rijndael-ammended.pdf
11 : * http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
12 : */
13 :
14 : #include "common.h"
15 :
16 : #if defined(MBEDTLS_AES_C)
17 :
18 : #include <string.h>
19 :
20 : #include "mbedtls/aes.h"
21 : #include "mbedtls/platform.h"
22 : #include "mbedtls/platform_util.h"
23 : #include "mbedtls/error.h"
24 :
25 : #if defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
26 : #if !((defined(MBEDTLS_ARCH_IS_ARMV8_A) && defined(MBEDTLS_AESCE_C)) || \
27 : (defined(MBEDTLS_ARCH_IS_X64) && defined(MBEDTLS_AESNI_C)) || \
28 : (defined(MBEDTLS_ARCH_IS_X86) && defined(MBEDTLS_AESNI_C)))
29 : #error "MBEDTLS_AES_USE_HARDWARE_ONLY defined, but not all prerequisites"
30 : #endif
31 : #endif
32 :
33 : #if defined(MBEDTLS_ARCH_IS_X86)
34 : #if defined(MBEDTLS_PADLOCK_C)
35 : #if !defined(MBEDTLS_HAVE_ASM)
36 : #error "MBEDTLS_PADLOCK_C defined, but not all prerequisites"
37 : #endif
38 : #if defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
39 : #error "MBEDTLS_AES_USE_HARDWARE_ONLY cannot be defined when " \
40 : "MBEDTLS_PADLOCK_C is set"
41 : #endif
42 : #endif
43 : #endif
44 :
45 : #if defined(MBEDTLS_PADLOCK_C)
46 : #include "padlock.h"
47 : #endif
48 : #if defined(MBEDTLS_AESNI_C)
49 : #include "aesni.h"
50 : #endif
51 : #if defined(MBEDTLS_AESCE_C)
52 : #include "aesce.h"
53 : #endif
54 :
55 : #include "mbedtls/platform.h"
56 : #include "ctr.h"
57 :
58 : /*
59 : * This is a convenience shorthand macro to check if we need reverse S-box and
60 : * reverse tables. It's private and only defined in this file.
61 : */
62 : #if (!defined(MBEDTLS_AES_DECRYPT_ALT) || \
63 : (!defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY))) && \
64 : !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
65 : #define MBEDTLS_AES_NEED_REVERSE_TABLES
66 : #endif
67 :
68 : #if !defined(MBEDTLS_AES_ALT)
69 :
70 : #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE)
71 : static int aes_padlock_ace = -1;
72 : #endif
73 :
74 : #if defined(MBEDTLS_AES_ROM_TABLES)
75 : /*
76 : * Forward S-box
77 : */
78 : MBEDTLS_MAYBE_UNUSED static const unsigned char FSb[256] =
79 : {
80 : 0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5,
81 : 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76,
82 : 0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0,
83 : 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0,
84 : 0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC,
85 : 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15,
86 : 0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A,
87 : 0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75,
88 : 0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0,
89 : 0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84,
90 : 0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B,
91 : 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF,
92 : 0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85,
93 : 0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8,
94 : 0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5,
95 : 0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2,
96 : 0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17,
97 : 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73,
98 : 0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88,
99 : 0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB,
100 : 0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C,
101 : 0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79,
102 : 0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9,
103 : 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08,
104 : 0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6,
105 : 0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A,
106 : 0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E,
107 : 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E,
108 : 0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94,
109 : 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF,
110 : 0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68,
111 : 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
112 : };
113 :
114 : /*
115 : * Forward tables
116 : */
117 : #define FT \
118 : \
119 : V(A5, 63, 63, C6), V(84, 7C, 7C, F8), V(99, 77, 77, EE), V(8D, 7B, 7B, F6), \
120 : V(0D, F2, F2, FF), V(BD, 6B, 6B, D6), V(B1, 6F, 6F, DE), V(54, C5, C5, 91), \
121 : V(50, 30, 30, 60), V(03, 01, 01, 02), V(A9, 67, 67, CE), V(7D, 2B, 2B, 56), \
122 : V(19, FE, FE, E7), V(62, D7, D7, B5), V(E6, AB, AB, 4D), V(9A, 76, 76, EC), \
123 : V(45, CA, CA, 8F), V(9D, 82, 82, 1F), V(40, C9, C9, 89), V(87, 7D, 7D, FA), \
124 : V(15, FA, FA, EF), V(EB, 59, 59, B2), V(C9, 47, 47, 8E), V(0B, F0, F0, FB), \
125 : V(EC, AD, AD, 41), V(67, D4, D4, B3), V(FD, A2, A2, 5F), V(EA, AF, AF, 45), \
126 : V(BF, 9C, 9C, 23), V(F7, A4, A4, 53), V(96, 72, 72, E4), V(5B, C0, C0, 9B), \
127 : V(C2, B7, B7, 75), V(1C, FD, FD, E1), V(AE, 93, 93, 3D), V(6A, 26, 26, 4C), \
128 : V(5A, 36, 36, 6C), V(41, 3F, 3F, 7E), V(02, F7, F7, F5), V(4F, CC, CC, 83), \
129 : V(5C, 34, 34, 68), V(F4, A5, A5, 51), V(34, E5, E5, D1), V(08, F1, F1, F9), \
130 : V(93, 71, 71, E2), V(73, D8, D8, AB), V(53, 31, 31, 62), V(3F, 15, 15, 2A), \
131 : V(0C, 04, 04, 08), V(52, C7, C7, 95), V(65, 23, 23, 46), V(5E, C3, C3, 9D), \
132 : V(28, 18, 18, 30), V(A1, 96, 96, 37), V(0F, 05, 05, 0A), V(B5, 9A, 9A, 2F), \
133 : V(09, 07, 07, 0E), V(36, 12, 12, 24), V(9B, 80, 80, 1B), V(3D, E2, E2, DF), \
134 : V(26, EB, EB, CD), V(69, 27, 27, 4E), V(CD, B2, B2, 7F), V(9F, 75, 75, EA), \
135 : V(1B, 09, 09, 12), V(9E, 83, 83, 1D), V(74, 2C, 2C, 58), V(2E, 1A, 1A, 34), \
136 : V(2D, 1B, 1B, 36), V(B2, 6E, 6E, DC), V(EE, 5A, 5A, B4), V(FB, A0, A0, 5B), \
137 : V(F6, 52, 52, A4), V(4D, 3B, 3B, 76), V(61, D6, D6, B7), V(CE, B3, B3, 7D), \
138 : V(7B, 29, 29, 52), V(3E, E3, E3, DD), V(71, 2F, 2F, 5E), V(97, 84, 84, 13), \
139 : V(F5, 53, 53, A6), V(68, D1, D1, B9), V(00, 00, 00, 00), V(2C, ED, ED, C1), \
140 : V(60, 20, 20, 40), V(1F, FC, FC, E3), V(C8, B1, B1, 79), V(ED, 5B, 5B, B6), \
141 : V(BE, 6A, 6A, D4), V(46, CB, CB, 8D), V(D9, BE, BE, 67), V(4B, 39, 39, 72), \
142 : V(DE, 4A, 4A, 94), V(D4, 4C, 4C, 98), V(E8, 58, 58, B0), V(4A, CF, CF, 85), \
143 : V(6B, D0, D0, BB), V(2A, EF, EF, C5), V(E5, AA, AA, 4F), V(16, FB, FB, ED), \
144 : V(C5, 43, 43, 86), V(D7, 4D, 4D, 9A), V(55, 33, 33, 66), V(94, 85, 85, 11), \
145 : V(CF, 45, 45, 8A), V(10, F9, F9, E9), V(06, 02, 02, 04), V(81, 7F, 7F, FE), \
146 : V(F0, 50, 50, A0), V(44, 3C, 3C, 78), V(BA, 9F, 9F, 25), V(E3, A8, A8, 4B), \
147 : V(F3, 51, 51, A2), V(FE, A3, A3, 5D), V(C0, 40, 40, 80), V(8A, 8F, 8F, 05), \
148 : V(AD, 92, 92, 3F), V(BC, 9D, 9D, 21), V(48, 38, 38, 70), V(04, F5, F5, F1), \
149 : V(DF, BC, BC, 63), V(C1, B6, B6, 77), V(75, DA, DA, AF), V(63, 21, 21, 42), \
150 : V(30, 10, 10, 20), V(1A, FF, FF, E5), V(0E, F3, F3, FD), V(6D, D2, D2, BF), \
151 : V(4C, CD, CD, 81), V(14, 0C, 0C, 18), V(35, 13, 13, 26), V(2F, EC, EC, C3), \
152 : V(E1, 5F, 5F, BE), V(A2, 97, 97, 35), V(CC, 44, 44, 88), V(39, 17, 17, 2E), \
153 : V(57, C4, C4, 93), V(F2, A7, A7, 55), V(82, 7E, 7E, FC), V(47, 3D, 3D, 7A), \
154 : V(AC, 64, 64, C8), V(E7, 5D, 5D, BA), V(2B, 19, 19, 32), V(95, 73, 73, E6), \
155 : V(A0, 60, 60, C0), V(98, 81, 81, 19), V(D1, 4F, 4F, 9E), V(7F, DC, DC, A3), \
156 : V(66, 22, 22, 44), V(7E, 2A, 2A, 54), V(AB, 90, 90, 3B), V(83, 88, 88, 0B), \
157 : V(CA, 46, 46, 8C), V(29, EE, EE, C7), V(D3, B8, B8, 6B), V(3C, 14, 14, 28), \
158 : V(79, DE, DE, A7), V(E2, 5E, 5E, BC), V(1D, 0B, 0B, 16), V(76, DB, DB, AD), \
159 : V(3B, E0, E0, DB), V(56, 32, 32, 64), V(4E, 3A, 3A, 74), V(1E, 0A, 0A, 14), \
160 : V(DB, 49, 49, 92), V(0A, 06, 06, 0C), V(6C, 24, 24, 48), V(E4, 5C, 5C, B8), \
161 : V(5D, C2, C2, 9F), V(6E, D3, D3, BD), V(EF, AC, AC, 43), V(A6, 62, 62, C4), \
162 : V(A8, 91, 91, 39), V(A4, 95, 95, 31), V(37, E4, E4, D3), V(8B, 79, 79, F2), \
163 : V(32, E7, E7, D5), V(43, C8, C8, 8B), V(59, 37, 37, 6E), V(B7, 6D, 6D, DA), \
164 : V(8C, 8D, 8D, 01), V(64, D5, D5, B1), V(D2, 4E, 4E, 9C), V(E0, A9, A9, 49), \
165 : V(B4, 6C, 6C, D8), V(FA, 56, 56, AC), V(07, F4, F4, F3), V(25, EA, EA, CF), \
166 : V(AF, 65, 65, CA), V(8E, 7A, 7A, F4), V(E9, AE, AE, 47), V(18, 08, 08, 10), \
167 : V(D5, BA, BA, 6F), V(88, 78, 78, F0), V(6F, 25, 25, 4A), V(72, 2E, 2E, 5C), \
168 : V(24, 1C, 1C, 38), V(F1, A6, A6, 57), V(C7, B4, B4, 73), V(51, C6, C6, 97), \
169 : V(23, E8, E8, CB), V(7C, DD, DD, A1), V(9C, 74, 74, E8), V(21, 1F, 1F, 3E), \
170 : V(DD, 4B, 4B, 96), V(DC, BD, BD, 61), V(86, 8B, 8B, 0D), V(85, 8A, 8A, 0F), \
171 : V(90, 70, 70, E0), V(42, 3E, 3E, 7C), V(C4, B5, B5, 71), V(AA, 66, 66, CC), \
172 : V(D8, 48, 48, 90), V(05, 03, 03, 06), V(01, F6, F6, F7), V(12, 0E, 0E, 1C), \
173 : V(A3, 61, 61, C2), V(5F, 35, 35, 6A), V(F9, 57, 57, AE), V(D0, B9, B9, 69), \
174 : V(91, 86, 86, 17), V(58, C1, C1, 99), V(27, 1D, 1D, 3A), V(B9, 9E, 9E, 27), \
175 : V(38, E1, E1, D9), V(13, F8, F8, EB), V(B3, 98, 98, 2B), V(33, 11, 11, 22), \
176 : V(BB, 69, 69, D2), V(70, D9, D9, A9), V(89, 8E, 8E, 07), V(A7, 94, 94, 33), \
177 : V(B6, 9B, 9B, 2D), V(22, 1E, 1E, 3C), V(92, 87, 87, 15), V(20, E9, E9, C9), \
178 : V(49, CE, CE, 87), V(FF, 55, 55, AA), V(78, 28, 28, 50), V(7A, DF, DF, A5), \
179 : V(8F, 8C, 8C, 03), V(F8, A1, A1, 59), V(80, 89, 89, 09), V(17, 0D, 0D, 1A), \
180 : V(DA, BF, BF, 65), V(31, E6, E6, D7), V(C6, 42, 42, 84), V(B8, 68, 68, D0), \
181 : V(C3, 41, 41, 82), V(B0, 99, 99, 29), V(77, 2D, 2D, 5A), V(11, 0F, 0F, 1E), \
182 : V(CB, B0, B0, 7B), V(FC, 54, 54, A8), V(D6, BB, BB, 6D), V(3A, 16, 16, 2C)
183 :
184 : #define V(a, b, c, d) 0x##a##b##c##d
185 : MBEDTLS_MAYBE_UNUSED static const uint32_t FT0[256] = { FT };
186 : #undef V
187 :
188 : #define V(a, b, c, d) 0x##b##c##d##a
189 : MBEDTLS_MAYBE_UNUSED static const uint32_t FT1[256] = { FT };
190 : #undef V
191 :
192 : #define V(a, b, c, d) 0x##c##d##a##b
193 : MBEDTLS_MAYBE_UNUSED static const uint32_t FT2[256] = { FT };
194 : #undef V
195 :
196 : #define V(a, b, c, d) 0x##d##a##b##c
197 : MBEDTLS_MAYBE_UNUSED static const uint32_t FT3[256] = { FT };
198 : #undef V
199 :
200 : #undef FT
201 :
202 : /*
203 : * Reverse S-box
204 : */
205 : MBEDTLS_MAYBE_UNUSED static const unsigned char RSb[256] =
206 : {
207 : 0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38,
208 : 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
209 : 0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87,
210 : 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB,
211 : 0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D,
212 : 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E,
213 : 0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2,
214 : 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25,
215 : 0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16,
216 : 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92,
217 : 0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA,
218 : 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84,
219 : 0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A,
220 : 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06,
221 : 0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02,
222 : 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B,
223 : 0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA,
224 : 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73,
225 : 0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85,
226 : 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E,
227 : 0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89,
228 : 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B,
229 : 0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20,
230 : 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4,
231 : 0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31,
232 : 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F,
233 : 0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D,
234 : 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF,
235 : 0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0,
236 : 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61,
237 : 0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26,
238 : 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
239 : };
240 :
241 : /*
242 : * Reverse tables
243 : */
244 : #define RT \
245 : \
246 : V(50, A7, F4, 51), V(53, 65, 41, 7E), V(C3, A4, 17, 1A), V(96, 5E, 27, 3A), \
247 : V(CB, 6B, AB, 3B), V(F1, 45, 9D, 1F), V(AB, 58, FA, AC), V(93, 03, E3, 4B), \
248 : V(55, FA, 30, 20), V(F6, 6D, 76, AD), V(91, 76, CC, 88), V(25, 4C, 02, F5), \
249 : V(FC, D7, E5, 4F), V(D7, CB, 2A, C5), V(80, 44, 35, 26), V(8F, A3, 62, B5), \
250 : V(49, 5A, B1, DE), V(67, 1B, BA, 25), V(98, 0E, EA, 45), V(E1, C0, FE, 5D), \
251 : V(02, 75, 2F, C3), V(12, F0, 4C, 81), V(A3, 97, 46, 8D), V(C6, F9, D3, 6B), \
252 : V(E7, 5F, 8F, 03), V(95, 9C, 92, 15), V(EB, 7A, 6D, BF), V(DA, 59, 52, 95), \
253 : V(2D, 83, BE, D4), V(D3, 21, 74, 58), V(29, 69, E0, 49), V(44, C8, C9, 8E), \
254 : V(6A, 89, C2, 75), V(78, 79, 8E, F4), V(6B, 3E, 58, 99), V(DD, 71, B9, 27), \
255 : V(B6, 4F, E1, BE), V(17, AD, 88, F0), V(66, AC, 20, C9), V(B4, 3A, CE, 7D), \
256 : V(18, 4A, DF, 63), V(82, 31, 1A, E5), V(60, 33, 51, 97), V(45, 7F, 53, 62), \
257 : V(E0, 77, 64, B1), V(84, AE, 6B, BB), V(1C, A0, 81, FE), V(94, 2B, 08, F9), \
258 : V(58, 68, 48, 70), V(19, FD, 45, 8F), V(87, 6C, DE, 94), V(B7, F8, 7B, 52), \
259 : V(23, D3, 73, AB), V(E2, 02, 4B, 72), V(57, 8F, 1F, E3), V(2A, AB, 55, 66), \
260 : V(07, 28, EB, B2), V(03, C2, B5, 2F), V(9A, 7B, C5, 86), V(A5, 08, 37, D3), \
261 : V(F2, 87, 28, 30), V(B2, A5, BF, 23), V(BA, 6A, 03, 02), V(5C, 82, 16, ED), \
262 : V(2B, 1C, CF, 8A), V(92, B4, 79, A7), V(F0, F2, 07, F3), V(A1, E2, 69, 4E), \
263 : V(CD, F4, DA, 65), V(D5, BE, 05, 06), V(1F, 62, 34, D1), V(8A, FE, A6, C4), \
264 : V(9D, 53, 2E, 34), V(A0, 55, F3, A2), V(32, E1, 8A, 05), V(75, EB, F6, A4), \
265 : V(39, EC, 83, 0B), V(AA, EF, 60, 40), V(06, 9F, 71, 5E), V(51, 10, 6E, BD), \
266 : V(F9, 8A, 21, 3E), V(3D, 06, DD, 96), V(AE, 05, 3E, DD), V(46, BD, E6, 4D), \
267 : V(B5, 8D, 54, 91), V(05, 5D, C4, 71), V(6F, D4, 06, 04), V(FF, 15, 50, 60), \
268 : V(24, FB, 98, 19), V(97, E9, BD, D6), V(CC, 43, 40, 89), V(77, 9E, D9, 67), \
269 : V(BD, 42, E8, B0), V(88, 8B, 89, 07), V(38, 5B, 19, E7), V(DB, EE, C8, 79), \
270 : V(47, 0A, 7C, A1), V(E9, 0F, 42, 7C), V(C9, 1E, 84, F8), V(00, 00, 00, 00), \
271 : V(83, 86, 80, 09), V(48, ED, 2B, 32), V(AC, 70, 11, 1E), V(4E, 72, 5A, 6C), \
272 : V(FB, FF, 0E, FD), V(56, 38, 85, 0F), V(1E, D5, AE, 3D), V(27, 39, 2D, 36), \
273 : V(64, D9, 0F, 0A), V(21, A6, 5C, 68), V(D1, 54, 5B, 9B), V(3A, 2E, 36, 24), \
274 : V(B1, 67, 0A, 0C), V(0F, E7, 57, 93), V(D2, 96, EE, B4), V(9E, 91, 9B, 1B), \
275 : V(4F, C5, C0, 80), V(A2, 20, DC, 61), V(69, 4B, 77, 5A), V(16, 1A, 12, 1C), \
276 : V(0A, BA, 93, E2), V(E5, 2A, A0, C0), V(43, E0, 22, 3C), V(1D, 17, 1B, 12), \
277 : V(0B, 0D, 09, 0E), V(AD, C7, 8B, F2), V(B9, A8, B6, 2D), V(C8, A9, 1E, 14), \
278 : V(85, 19, F1, 57), V(4C, 07, 75, AF), V(BB, DD, 99, EE), V(FD, 60, 7F, A3), \
279 : V(9F, 26, 01, F7), V(BC, F5, 72, 5C), V(C5, 3B, 66, 44), V(34, 7E, FB, 5B), \
280 : V(76, 29, 43, 8B), V(DC, C6, 23, CB), V(68, FC, ED, B6), V(63, F1, E4, B8), \
281 : V(CA, DC, 31, D7), V(10, 85, 63, 42), V(40, 22, 97, 13), V(20, 11, C6, 84), \
282 : V(7D, 24, 4A, 85), V(F8, 3D, BB, D2), V(11, 32, F9, AE), V(6D, A1, 29, C7), \
283 : V(4B, 2F, 9E, 1D), V(F3, 30, B2, DC), V(EC, 52, 86, 0D), V(D0, E3, C1, 77), \
284 : V(6C, 16, B3, 2B), V(99, B9, 70, A9), V(FA, 48, 94, 11), V(22, 64, E9, 47), \
285 : V(C4, 8C, FC, A8), V(1A, 3F, F0, A0), V(D8, 2C, 7D, 56), V(EF, 90, 33, 22), \
286 : V(C7, 4E, 49, 87), V(C1, D1, 38, D9), V(FE, A2, CA, 8C), V(36, 0B, D4, 98), \
287 : V(CF, 81, F5, A6), V(28, DE, 7A, A5), V(26, 8E, B7, DA), V(A4, BF, AD, 3F), \
288 : V(E4, 9D, 3A, 2C), V(0D, 92, 78, 50), V(9B, CC, 5F, 6A), V(62, 46, 7E, 54), \
289 : V(C2, 13, 8D, F6), V(E8, B8, D8, 90), V(5E, F7, 39, 2E), V(F5, AF, C3, 82), \
290 : V(BE, 80, 5D, 9F), V(7C, 93, D0, 69), V(A9, 2D, D5, 6F), V(B3, 12, 25, CF), \
291 : V(3B, 99, AC, C8), V(A7, 7D, 18, 10), V(6E, 63, 9C, E8), V(7B, BB, 3B, DB), \
292 : V(09, 78, 26, CD), V(F4, 18, 59, 6E), V(01, B7, 9A, EC), V(A8, 9A, 4F, 83), \
293 : V(65, 6E, 95, E6), V(7E, E6, FF, AA), V(08, CF, BC, 21), V(E6, E8, 15, EF), \
294 : V(D9, 9B, E7, BA), V(CE, 36, 6F, 4A), V(D4, 09, 9F, EA), V(D6, 7C, B0, 29), \
295 : V(AF, B2, A4, 31), V(31, 23, 3F, 2A), V(30, 94, A5, C6), V(C0, 66, A2, 35), \
296 : V(37, BC, 4E, 74), V(A6, CA, 82, FC), V(B0, D0, 90, E0), V(15, D8, A7, 33), \
297 : V(4A, 98, 04, F1), V(F7, DA, EC, 41), V(0E, 50, CD, 7F), V(2F, F6, 91, 17), \
298 : V(8D, D6, 4D, 76), V(4D, B0, EF, 43), V(54, 4D, AA, CC), V(DF, 04, 96, E4), \
299 : V(E3, B5, D1, 9E), V(1B, 88, 6A, 4C), V(B8, 1F, 2C, C1), V(7F, 51, 65, 46), \
300 : V(04, EA, 5E, 9D), V(5D, 35, 8C, 01), V(73, 74, 87, FA), V(2E, 41, 0B, FB), \
301 : V(5A, 1D, 67, B3), V(52, D2, DB, 92), V(33, 56, 10, E9), V(13, 47, D6, 6D), \
302 : V(8C, 61, D7, 9A), V(7A, 0C, A1, 37), V(8E, 14, F8, 59), V(89, 3C, 13, EB), \
303 : V(EE, 27, A9, CE), V(35, C9, 61, B7), V(ED, E5, 1C, E1), V(3C, B1, 47, 7A), \
304 : V(59, DF, D2, 9C), V(3F, 73, F2, 55), V(79, CE, 14, 18), V(BF, 37, C7, 73), \
305 : V(EA, CD, F7, 53), V(5B, AA, FD, 5F), V(14, 6F, 3D, DF), V(86, DB, 44, 78), \
306 : V(81, F3, AF, CA), V(3E, C4, 68, B9), V(2C, 34, 24, 38), V(5F, 40, A3, C2), \
307 : V(72, C3, 1D, 16), V(0C, 25, E2, BC), V(8B, 49, 3C, 28), V(41, 95, 0D, FF), \
308 : V(71, 01, A8, 39), V(DE, B3, 0C, 08), V(9C, E4, B4, D8), V(90, C1, 56, 64), \
309 : V(61, 84, CB, 7B), V(70, B6, 32, D5), V(74, 5C, 6C, 48), V(42, 57, B8, D0)
310 :
311 :
312 : #define V(a, b, c, d) 0x##a##b##c##d
313 : MBEDTLS_MAYBE_UNUSED static const uint32_t RT0[256] = { RT };
314 : #undef V
315 :
316 : #define V(a, b, c, d) 0x##b##c##d##a
317 : MBEDTLS_MAYBE_UNUSED static const uint32_t RT1[256] = { RT };
318 : #undef V
319 :
320 : #define V(a, b, c, d) 0x##c##d##a##b
321 : MBEDTLS_MAYBE_UNUSED static const uint32_t RT2[256] = { RT };
322 : #undef V
323 :
324 : #define V(a, b, c, d) 0x##d##a##b##c
325 : MBEDTLS_MAYBE_UNUSED static const uint32_t RT3[256] = { RT };
326 : #undef V
327 :
328 : #undef RT
329 :
330 : /*
331 : * Round constants
332 : */
333 : MBEDTLS_MAYBE_UNUSED static const uint32_t round_constants[10] =
334 : {
335 : 0x00000001, 0x00000002, 0x00000004, 0x00000008,
336 : 0x00000010, 0x00000020, 0x00000040, 0x00000080,
337 : 0x0000001B, 0x00000036
338 : };
339 :
340 : #else /* MBEDTLS_AES_ROM_TABLES */
341 :
342 : /*
343 : * Forward S-box & tables
344 : */
345 : MBEDTLS_MAYBE_UNUSED static unsigned char FSb[256];
346 : MBEDTLS_MAYBE_UNUSED static uint32_t FT0[256];
347 : MBEDTLS_MAYBE_UNUSED static uint32_t FT1[256];
348 : MBEDTLS_MAYBE_UNUSED static uint32_t FT2[256];
349 : MBEDTLS_MAYBE_UNUSED static uint32_t FT3[256];
350 :
351 : /*
352 : * Reverse S-box & tables
353 : */
354 : MBEDTLS_MAYBE_UNUSED static unsigned char RSb[256];
355 :
356 : MBEDTLS_MAYBE_UNUSED static uint32_t RT0[256];
357 : MBEDTLS_MAYBE_UNUSED static uint32_t RT1[256];
358 : MBEDTLS_MAYBE_UNUSED static uint32_t RT2[256];
359 : MBEDTLS_MAYBE_UNUSED static uint32_t RT3[256];
360 :
361 : /*
362 : * Round constants
363 : */
364 : MBEDTLS_MAYBE_UNUSED static uint32_t round_constants[10];
365 :
366 : /*
367 : * Tables generation code
368 : */
369 : #define ROTL8(x) (((x) << 8) & 0xFFFFFFFF) | ((x) >> 24)
370 : #define XTIME(x) (((x) << 1) ^ (((x) & 0x80) ? 0x1B : 0x00))
371 : #define MUL(x, y) (((x) && (y)) ? pow[(log[(x)]+log[(y)]) % 255] : 0)
372 :
373 : MBEDTLS_MAYBE_UNUSED static int aes_init_done = 0;
374 :
375 2 : MBEDTLS_MAYBE_UNUSED static void aes_gen_tables(void)
376 : {
377 : int i;
378 : uint8_t x, y, z;
379 : uint8_t pow[256];
380 : uint8_t log[256];
381 :
382 : /*
383 : * compute pow and log tables over GF(2^8)
384 : */
385 514 : for (i = 0, x = 1; i < 256; i++) {
386 512 : pow[i] = x;
387 512 : log[x] = (uint8_t) i;
388 512 : x ^= XTIME(x);
389 : }
390 :
391 : /*
392 : * calculate the round constants
393 : */
394 22 : for (i = 0, x = 1; i < 10; i++) {
395 20 : round_constants[i] = x;
396 20 : x = XTIME(x);
397 : }
398 :
399 : /*
400 : * generate the forward and reverse S-boxes
401 : */
402 2 : FSb[0x00] = 0x63;
403 : #if defined(MBEDTLS_AES_NEED_REVERSE_TABLES)
404 2 : RSb[0x63] = 0x00;
405 : #endif
406 :
407 512 : for (i = 1; i < 256; i++) {
408 510 : x = pow[255 - log[i]];
409 :
410 510 : y = x; y = (y << 1) | (y >> 7);
411 510 : x ^= y; y = (y << 1) | (y >> 7);
412 510 : x ^= y; y = (y << 1) | (y >> 7);
413 510 : x ^= y; y = (y << 1) | (y >> 7);
414 510 : x ^= y ^ 0x63;
415 :
416 510 : FSb[i] = x;
417 : #if defined(MBEDTLS_AES_NEED_REVERSE_TABLES)
418 510 : RSb[x] = (unsigned char) i;
419 : #endif
420 : }
421 :
422 : /*
423 : * generate the forward and reverse tables
424 : */
425 514 : for (i = 0; i < 256; i++) {
426 512 : x = FSb[i];
427 512 : y = XTIME(x);
428 512 : z = y ^ x;
429 :
430 512 : FT0[i] = ((uint32_t) y) ^
431 512 : ((uint32_t) x << 8) ^
432 512 : ((uint32_t) x << 16) ^
433 512 : ((uint32_t) z << 24);
434 :
435 : #if !defined(MBEDTLS_AES_FEWER_TABLES)
436 512 : FT1[i] = ROTL8(FT0[i]);
437 512 : FT2[i] = ROTL8(FT1[i]);
438 512 : FT3[i] = ROTL8(FT2[i]);
439 : #endif /* !MBEDTLS_AES_FEWER_TABLES */
440 :
441 : #if defined(MBEDTLS_AES_NEED_REVERSE_TABLES)
442 512 : x = RSb[i];
443 :
444 512 : RT0[i] = ((uint32_t) MUL(0x0E, x)) ^
445 512 : ((uint32_t) MUL(0x09, x) << 8) ^
446 512 : ((uint32_t) MUL(0x0D, x) << 16) ^
447 512 : ((uint32_t) MUL(0x0B, x) << 24);
448 :
449 : #if !defined(MBEDTLS_AES_FEWER_TABLES)
450 512 : RT1[i] = ROTL8(RT0[i]);
451 512 : RT2[i] = ROTL8(RT1[i]);
452 512 : RT3[i] = ROTL8(RT2[i]);
453 : #endif /* !MBEDTLS_AES_FEWER_TABLES */
454 : #endif /* MBEDTLS_AES_NEED_REVERSE_TABLES */
455 : }
456 2 : }
457 :
458 : #undef ROTL8
459 :
460 : #endif /* MBEDTLS_AES_ROM_TABLES */
461 :
462 : #if defined(MBEDTLS_AES_FEWER_TABLES)
463 :
464 : #define ROTL8(x) ((uint32_t) ((x) << 8) + (uint32_t) ((x) >> 24))
465 : #define ROTL16(x) ((uint32_t) ((x) << 16) + (uint32_t) ((x) >> 16))
466 : #define ROTL24(x) ((uint32_t) ((x) << 24) + (uint32_t) ((x) >> 8))
467 :
468 : #define AES_RT0(idx) RT0[idx]
469 : #define AES_RT1(idx) ROTL8(RT0[idx])
470 : #define AES_RT2(idx) ROTL16(RT0[idx])
471 : #define AES_RT3(idx) ROTL24(RT0[idx])
472 :
473 : #define AES_FT0(idx) FT0[idx]
474 : #define AES_FT1(idx) ROTL8(FT0[idx])
475 : #define AES_FT2(idx) ROTL16(FT0[idx])
476 : #define AES_FT3(idx) ROTL24(FT0[idx])
477 :
478 : #else /* MBEDTLS_AES_FEWER_TABLES */
479 :
480 : #define AES_RT0(idx) RT0[idx]
481 : #define AES_RT1(idx) RT1[idx]
482 : #define AES_RT2(idx) RT2[idx]
483 : #define AES_RT3(idx) RT3[idx]
484 :
485 : #define AES_FT0(idx) FT0[idx]
486 : #define AES_FT1(idx) FT1[idx]
487 : #define AES_FT2(idx) FT2[idx]
488 : #define AES_FT3(idx) FT3[idx]
489 :
490 : #endif /* MBEDTLS_AES_FEWER_TABLES */
491 :
492 795 : void mbedtls_aes_init(mbedtls_aes_context *ctx)
493 : {
494 795 : memset(ctx, 0, sizeof(mbedtls_aes_context));
495 795 : }
496 :
497 795 : void mbedtls_aes_free(mbedtls_aes_context *ctx)
498 : {
499 795 : if (ctx == NULL) {
500 0 : return;
501 : }
502 :
503 795 : mbedtls_platform_zeroize(ctx, sizeof(mbedtls_aes_context));
504 : }
505 :
506 : #if defined(MBEDTLS_CIPHER_MODE_XTS)
507 : void mbedtls_aes_xts_init(mbedtls_aes_xts_context *ctx)
508 : {
509 : mbedtls_aes_init(&ctx->crypt);
510 : mbedtls_aes_init(&ctx->tweak);
511 : }
512 :
513 : void mbedtls_aes_xts_free(mbedtls_aes_xts_context *ctx)
514 : {
515 : if (ctx == NULL) {
516 : return;
517 : }
518 :
519 : mbedtls_aes_free(&ctx->crypt);
520 : mbedtls_aes_free(&ctx->tweak);
521 : }
522 : #endif /* MBEDTLS_CIPHER_MODE_XTS */
523 :
524 : /* Some implementations need the round keys to be aligned.
525 : * Return an offset to be added to buf, such that (buf + offset) is
526 : * correctly aligned.
527 : * Note that the offset is in units of elements of buf, i.e. 32-bit words,
528 : * i.e. an offset of 1 means 4 bytes and so on.
529 : */
530 : #if (defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE)) || \
531 : (defined(MBEDTLS_AESNI_C) && MBEDTLS_AESNI_HAVE_CODE == 2)
532 : #define MAY_NEED_TO_ALIGN
533 : #endif
534 :
535 795 : MBEDTLS_MAYBE_UNUSED static unsigned mbedtls_aes_rk_offset(uint32_t *buf)
536 : {
537 : #if defined(MAY_NEED_TO_ALIGN)
538 : int align_16_bytes = 0;
539 :
540 : #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE)
541 : if (aes_padlock_ace == -1) {
542 : aes_padlock_ace = mbedtls_padlock_has_support(MBEDTLS_PADLOCK_ACE);
543 : }
544 : if (aes_padlock_ace) {
545 : align_16_bytes = 1;
546 : }
547 : #endif
548 :
549 : #if defined(MBEDTLS_AESNI_C) && MBEDTLS_AESNI_HAVE_CODE == 2
550 : if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
551 : align_16_bytes = 1;
552 : }
553 : #endif
554 :
555 : if (align_16_bytes) {
556 : /* These implementations needs 16-byte alignment
557 : * for the round key array. */
558 : unsigned delta = ((uintptr_t) buf & 0x0000000fU) / 4;
559 : if (delta == 0) {
560 : return 0;
561 : } else {
562 : return 4 - delta; // 16 bytes = 4 uint32_t
563 : }
564 : }
565 : #else /* MAY_NEED_TO_ALIGN */
566 : (void) buf;
567 : #endif /* MAY_NEED_TO_ALIGN */
568 :
569 795 : return 0;
570 : }
571 :
572 : /*
573 : * AES key schedule (encryption)
574 : */
575 : #if !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
576 795 : int mbedtls_aes_setkey_enc(mbedtls_aes_context *ctx, const unsigned char *key,
577 : unsigned int keybits)
578 : {
579 : uint32_t *RK;
580 :
581 795 : switch (keybits) {
582 2 : case 128: ctx->nr = 10; break;
583 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
584 0 : case 192: ctx->nr = 12; break;
585 793 : case 256: ctx->nr = 14; break;
586 : #endif /* !MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH */
587 0 : default: return MBEDTLS_ERR_AES_INVALID_KEY_LENGTH;
588 : }
589 :
590 : #if !defined(MBEDTLS_AES_ROM_TABLES)
591 795 : if (aes_init_done == 0) {
592 2 : aes_gen_tables();
593 2 : aes_init_done = 1;
594 : }
595 : #endif
596 :
597 795 : ctx->rk_offset = mbedtls_aes_rk_offset(ctx->buf);
598 795 : RK = ctx->buf + ctx->rk_offset;
599 :
600 : #if defined(MBEDTLS_AESNI_HAVE_CODE)
601 795 : if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
602 795 : return mbedtls_aesni_setkey_enc((unsigned char *) RK, key, keybits);
603 : }
604 : #endif
605 :
606 : #if defined(MBEDTLS_AESCE_HAVE_CODE)
607 : if (MBEDTLS_AESCE_HAS_SUPPORT()) {
608 : return mbedtls_aesce_setkey_enc((unsigned char *) RK, key, keybits);
609 : }
610 : #endif
611 :
612 : #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
613 0 : for (unsigned int i = 0; i < (keybits >> 5); i++) {
614 0 : RK[i] = MBEDTLS_GET_UINT32_LE(key, i << 2);
615 : }
616 :
617 0 : switch (ctx->nr) {
618 0 : case 10:
619 :
620 0 : for (unsigned int i = 0; i < 10; i++, RK += 4) {
621 0 : RK[4] = RK[0] ^ round_constants[i] ^
622 0 : ((uint32_t) FSb[MBEDTLS_BYTE_1(RK[3])]) ^
623 0 : ((uint32_t) FSb[MBEDTLS_BYTE_2(RK[3])] << 8) ^
624 0 : ((uint32_t) FSb[MBEDTLS_BYTE_3(RK[3])] << 16) ^
625 0 : ((uint32_t) FSb[MBEDTLS_BYTE_0(RK[3])] << 24);
626 :
627 0 : RK[5] = RK[1] ^ RK[4];
628 0 : RK[6] = RK[2] ^ RK[5];
629 0 : RK[7] = RK[3] ^ RK[6];
630 : }
631 0 : break;
632 :
633 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
634 0 : case 12:
635 :
636 0 : for (unsigned int i = 0; i < 8; i++, RK += 6) {
637 0 : RK[6] = RK[0] ^ round_constants[i] ^
638 0 : ((uint32_t) FSb[MBEDTLS_BYTE_1(RK[5])]) ^
639 0 : ((uint32_t) FSb[MBEDTLS_BYTE_2(RK[5])] << 8) ^
640 0 : ((uint32_t) FSb[MBEDTLS_BYTE_3(RK[5])] << 16) ^
641 0 : ((uint32_t) FSb[MBEDTLS_BYTE_0(RK[5])] << 24);
642 :
643 0 : RK[7] = RK[1] ^ RK[6];
644 0 : RK[8] = RK[2] ^ RK[7];
645 0 : RK[9] = RK[3] ^ RK[8];
646 0 : RK[10] = RK[4] ^ RK[9];
647 0 : RK[11] = RK[5] ^ RK[10];
648 : }
649 0 : break;
650 :
651 0 : case 14:
652 :
653 0 : for (unsigned int i = 0; i < 7; i++, RK += 8) {
654 0 : RK[8] = RK[0] ^ round_constants[i] ^
655 0 : ((uint32_t) FSb[MBEDTLS_BYTE_1(RK[7])]) ^
656 0 : ((uint32_t) FSb[MBEDTLS_BYTE_2(RK[7])] << 8) ^
657 0 : ((uint32_t) FSb[MBEDTLS_BYTE_3(RK[7])] << 16) ^
658 0 : ((uint32_t) FSb[MBEDTLS_BYTE_0(RK[7])] << 24);
659 :
660 0 : RK[9] = RK[1] ^ RK[8];
661 0 : RK[10] = RK[2] ^ RK[9];
662 0 : RK[11] = RK[3] ^ RK[10];
663 :
664 0 : RK[12] = RK[4] ^
665 0 : ((uint32_t) FSb[MBEDTLS_BYTE_0(RK[11])]) ^
666 0 : ((uint32_t) FSb[MBEDTLS_BYTE_1(RK[11])] << 8) ^
667 0 : ((uint32_t) FSb[MBEDTLS_BYTE_2(RK[11])] << 16) ^
668 0 : ((uint32_t) FSb[MBEDTLS_BYTE_3(RK[11])] << 24);
669 :
670 0 : RK[13] = RK[5] ^ RK[12];
671 0 : RK[14] = RK[6] ^ RK[13];
672 0 : RK[15] = RK[7] ^ RK[14];
673 : }
674 0 : break;
675 : #endif /* !MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH */
676 : }
677 :
678 0 : return 0;
679 : #endif /* !MBEDTLS_AES_USE_HARDWARE_ONLY */
680 : }
681 : #endif /* !MBEDTLS_AES_SETKEY_ENC_ALT */
682 :
683 : /*
684 : * AES key schedule (decryption)
685 : */
686 : #if !defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
687 0 : int mbedtls_aes_setkey_dec(mbedtls_aes_context *ctx, const unsigned char *key,
688 : unsigned int keybits)
689 : {
690 : #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
691 : uint32_t *SK;
692 : #endif
693 : int ret;
694 : mbedtls_aes_context cty;
695 : uint32_t *RK;
696 :
697 :
698 0 : mbedtls_aes_init(&cty);
699 :
700 0 : ctx->rk_offset = mbedtls_aes_rk_offset(ctx->buf);
701 0 : RK = ctx->buf + ctx->rk_offset;
702 :
703 : /* Also checks keybits */
704 0 : if ((ret = mbedtls_aes_setkey_enc(&cty, key, keybits)) != 0) {
705 0 : goto exit;
706 : }
707 :
708 0 : ctx->nr = cty.nr;
709 :
710 : #if defined(MBEDTLS_AESNI_HAVE_CODE)
711 0 : if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
712 0 : mbedtls_aesni_inverse_key((unsigned char *) RK,
713 0 : (const unsigned char *) (cty.buf + cty.rk_offset), ctx->nr);
714 0 : goto exit;
715 : }
716 : #endif
717 :
718 : #if defined(MBEDTLS_AESCE_HAVE_CODE)
719 : if (MBEDTLS_AESCE_HAS_SUPPORT()) {
720 : mbedtls_aesce_inverse_key(
721 : (unsigned char *) RK,
722 : (const unsigned char *) (cty.buf + cty.rk_offset),
723 : ctx->nr);
724 : goto exit;
725 : }
726 : #endif
727 :
728 : #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
729 0 : SK = cty.buf + cty.rk_offset + cty.nr * 4;
730 :
731 0 : *RK++ = *SK++;
732 0 : *RK++ = *SK++;
733 0 : *RK++ = *SK++;
734 0 : *RK++ = *SK++;
735 0 : SK -= 8;
736 0 : for (int i = ctx->nr - 1; i > 0; i--, SK -= 8) {
737 0 : for (int j = 0; j < 4; j++, SK++) {
738 0 : *RK++ = AES_RT0(FSb[MBEDTLS_BYTE_0(*SK)]) ^
739 0 : AES_RT1(FSb[MBEDTLS_BYTE_1(*SK)]) ^
740 0 : AES_RT2(FSb[MBEDTLS_BYTE_2(*SK)]) ^
741 0 : AES_RT3(FSb[MBEDTLS_BYTE_3(*SK)]);
742 : }
743 : }
744 :
745 0 : *RK++ = *SK++;
746 0 : *RK++ = *SK++;
747 0 : *RK++ = *SK++;
748 0 : *RK++ = *SK++;
749 : #endif /* !MBEDTLS_AES_USE_HARDWARE_ONLY */
750 0 : exit:
751 0 : mbedtls_aes_free(&cty);
752 :
753 0 : return ret;
754 : }
755 : #endif /* !MBEDTLS_AES_SETKEY_DEC_ALT && !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
756 :
757 : #if defined(MBEDTLS_CIPHER_MODE_XTS)
758 : static int mbedtls_aes_xts_decode_keys(const unsigned char *key,
759 : unsigned int keybits,
760 : const unsigned char **key1,
761 : unsigned int *key1bits,
762 : const unsigned char **key2,
763 : unsigned int *key2bits)
764 : {
765 : const unsigned int half_keybits = keybits / 2;
766 : const unsigned int half_keybytes = half_keybits / 8;
767 :
768 : switch (keybits) {
769 : case 256: break;
770 : case 512: break;
771 : default: return MBEDTLS_ERR_AES_INVALID_KEY_LENGTH;
772 : }
773 :
774 : *key1bits = half_keybits;
775 : *key2bits = half_keybits;
776 : *key1 = &key[0];
777 : *key2 = &key[half_keybytes];
778 :
779 : return 0;
780 : }
781 :
782 : int mbedtls_aes_xts_setkey_enc(mbedtls_aes_xts_context *ctx,
783 : const unsigned char *key,
784 : unsigned int keybits)
785 : {
786 : int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
787 : const unsigned char *key1, *key2;
788 : unsigned int key1bits, key2bits;
789 :
790 : ret = mbedtls_aes_xts_decode_keys(key, keybits, &key1, &key1bits,
791 : &key2, &key2bits);
792 : if (ret != 0) {
793 : return ret;
794 : }
795 :
796 : /* Set the tweak key. Always set tweak key for the encryption mode. */
797 : ret = mbedtls_aes_setkey_enc(&ctx->tweak, key2, key2bits);
798 : if (ret != 0) {
799 : return ret;
800 : }
801 :
802 : /* Set crypt key for encryption. */
803 : return mbedtls_aes_setkey_enc(&ctx->crypt, key1, key1bits);
804 : }
805 :
806 : int mbedtls_aes_xts_setkey_dec(mbedtls_aes_xts_context *ctx,
807 : const unsigned char *key,
808 : unsigned int keybits)
809 : {
810 : int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
811 : const unsigned char *key1, *key2;
812 : unsigned int key1bits, key2bits;
813 :
814 : ret = mbedtls_aes_xts_decode_keys(key, keybits, &key1, &key1bits,
815 : &key2, &key2bits);
816 : if (ret != 0) {
817 : return ret;
818 : }
819 :
820 : /* Set the tweak key. Always set tweak key for encryption. */
821 : ret = mbedtls_aes_setkey_enc(&ctx->tweak, key2, key2bits);
822 : if (ret != 0) {
823 : return ret;
824 : }
825 :
826 : /* Set crypt key for decryption. */
827 : return mbedtls_aes_setkey_dec(&ctx->crypt, key1, key1bits);
828 : }
829 : #endif /* MBEDTLS_CIPHER_MODE_XTS */
830 :
831 : #define AES_FROUND(X0, X1, X2, X3, Y0, Y1, Y2, Y3) \
832 : do \
833 : { \
834 : (X0) = *RK++ ^ AES_FT0(MBEDTLS_BYTE_0(Y0)) ^ \
835 : AES_FT1(MBEDTLS_BYTE_1(Y1)) ^ \
836 : AES_FT2(MBEDTLS_BYTE_2(Y2)) ^ \
837 : AES_FT3(MBEDTLS_BYTE_3(Y3)); \
838 : \
839 : (X1) = *RK++ ^ AES_FT0(MBEDTLS_BYTE_0(Y1)) ^ \
840 : AES_FT1(MBEDTLS_BYTE_1(Y2)) ^ \
841 : AES_FT2(MBEDTLS_BYTE_2(Y3)) ^ \
842 : AES_FT3(MBEDTLS_BYTE_3(Y0)); \
843 : \
844 : (X2) = *RK++ ^ AES_FT0(MBEDTLS_BYTE_0(Y2)) ^ \
845 : AES_FT1(MBEDTLS_BYTE_1(Y3)) ^ \
846 : AES_FT2(MBEDTLS_BYTE_2(Y0)) ^ \
847 : AES_FT3(MBEDTLS_BYTE_3(Y1)); \
848 : \
849 : (X3) = *RK++ ^ AES_FT0(MBEDTLS_BYTE_0(Y3)) ^ \
850 : AES_FT1(MBEDTLS_BYTE_1(Y0)) ^ \
851 : AES_FT2(MBEDTLS_BYTE_2(Y1)) ^ \
852 : AES_FT3(MBEDTLS_BYTE_3(Y2)); \
853 : } while (0)
854 :
855 : #define AES_RROUND(X0, X1, X2, X3, Y0, Y1, Y2, Y3) \
856 : do \
857 : { \
858 : (X0) = *RK++ ^ AES_RT0(MBEDTLS_BYTE_0(Y0)) ^ \
859 : AES_RT1(MBEDTLS_BYTE_1(Y3)) ^ \
860 : AES_RT2(MBEDTLS_BYTE_2(Y2)) ^ \
861 : AES_RT3(MBEDTLS_BYTE_3(Y1)); \
862 : \
863 : (X1) = *RK++ ^ AES_RT0(MBEDTLS_BYTE_0(Y1)) ^ \
864 : AES_RT1(MBEDTLS_BYTE_1(Y0)) ^ \
865 : AES_RT2(MBEDTLS_BYTE_2(Y3)) ^ \
866 : AES_RT3(MBEDTLS_BYTE_3(Y2)); \
867 : \
868 : (X2) = *RK++ ^ AES_RT0(MBEDTLS_BYTE_0(Y2)) ^ \
869 : AES_RT1(MBEDTLS_BYTE_1(Y1)) ^ \
870 : AES_RT2(MBEDTLS_BYTE_2(Y0)) ^ \
871 : AES_RT3(MBEDTLS_BYTE_3(Y3)); \
872 : \
873 : (X3) = *RK++ ^ AES_RT0(MBEDTLS_BYTE_0(Y3)) ^ \
874 : AES_RT1(MBEDTLS_BYTE_1(Y2)) ^ \
875 : AES_RT2(MBEDTLS_BYTE_2(Y1)) ^ \
876 : AES_RT3(MBEDTLS_BYTE_3(Y0)); \
877 : } while (0)
878 :
879 : /*
880 : * AES-ECB block encryption
881 : */
882 : #if !defined(MBEDTLS_AES_ENCRYPT_ALT)
883 0 : int mbedtls_internal_aes_encrypt(mbedtls_aes_context *ctx,
884 : const unsigned char input[16],
885 : unsigned char output[16])
886 : {
887 : int i;
888 0 : uint32_t *RK = ctx->buf + ctx->rk_offset;
889 : struct {
890 : uint32_t X[4];
891 : uint32_t Y[4];
892 : } t;
893 :
894 0 : t.X[0] = MBEDTLS_GET_UINT32_LE(input, 0); t.X[0] ^= *RK++;
895 0 : t.X[1] = MBEDTLS_GET_UINT32_LE(input, 4); t.X[1] ^= *RK++;
896 0 : t.X[2] = MBEDTLS_GET_UINT32_LE(input, 8); t.X[2] ^= *RK++;
897 0 : t.X[3] = MBEDTLS_GET_UINT32_LE(input, 12); t.X[3] ^= *RK++;
898 :
899 0 : for (i = (ctx->nr >> 1) - 1; i > 0; i--) {
900 0 : AES_FROUND(t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3]);
901 0 : AES_FROUND(t.X[0], t.X[1], t.X[2], t.X[3], t.Y[0], t.Y[1], t.Y[2], t.Y[3]);
902 : }
903 :
904 0 : AES_FROUND(t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3]);
905 :
906 0 : t.X[0] = *RK++ ^ \
907 0 : ((uint32_t) FSb[MBEDTLS_BYTE_0(t.Y[0])]) ^
908 0 : ((uint32_t) FSb[MBEDTLS_BYTE_1(t.Y[1])] << 8) ^
909 0 : ((uint32_t) FSb[MBEDTLS_BYTE_2(t.Y[2])] << 16) ^
910 0 : ((uint32_t) FSb[MBEDTLS_BYTE_3(t.Y[3])] << 24);
911 :
912 0 : t.X[1] = *RK++ ^ \
913 0 : ((uint32_t) FSb[MBEDTLS_BYTE_0(t.Y[1])]) ^
914 0 : ((uint32_t) FSb[MBEDTLS_BYTE_1(t.Y[2])] << 8) ^
915 0 : ((uint32_t) FSb[MBEDTLS_BYTE_2(t.Y[3])] << 16) ^
916 0 : ((uint32_t) FSb[MBEDTLS_BYTE_3(t.Y[0])] << 24);
917 :
918 0 : t.X[2] = *RK++ ^ \
919 0 : ((uint32_t) FSb[MBEDTLS_BYTE_0(t.Y[2])]) ^
920 0 : ((uint32_t) FSb[MBEDTLS_BYTE_1(t.Y[3])] << 8) ^
921 0 : ((uint32_t) FSb[MBEDTLS_BYTE_2(t.Y[0])] << 16) ^
922 0 : ((uint32_t) FSb[MBEDTLS_BYTE_3(t.Y[1])] << 24);
923 :
924 0 : t.X[3] = *RK++ ^ \
925 0 : ((uint32_t) FSb[MBEDTLS_BYTE_0(t.Y[3])]) ^
926 0 : ((uint32_t) FSb[MBEDTLS_BYTE_1(t.Y[0])] << 8) ^
927 0 : ((uint32_t) FSb[MBEDTLS_BYTE_2(t.Y[1])] << 16) ^
928 0 : ((uint32_t) FSb[MBEDTLS_BYTE_3(t.Y[2])] << 24);
929 :
930 0 : MBEDTLS_PUT_UINT32_LE(t.X[0], output, 0);
931 0 : MBEDTLS_PUT_UINT32_LE(t.X[1], output, 4);
932 0 : MBEDTLS_PUT_UINT32_LE(t.X[2], output, 8);
933 0 : MBEDTLS_PUT_UINT32_LE(t.X[3], output, 12);
934 :
935 0 : mbedtls_platform_zeroize(&t, sizeof(t));
936 :
937 0 : return 0;
938 : }
939 : #endif /* !MBEDTLS_AES_ENCRYPT_ALT */
940 :
941 : /*
942 : * AES-ECB block decryption
943 : */
944 : #if !defined(MBEDTLS_AES_DECRYPT_ALT) && !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
945 0 : int mbedtls_internal_aes_decrypt(mbedtls_aes_context *ctx,
946 : const unsigned char input[16],
947 : unsigned char output[16])
948 : {
949 : int i;
950 0 : uint32_t *RK = ctx->buf + ctx->rk_offset;
951 : struct {
952 : uint32_t X[4];
953 : uint32_t Y[4];
954 : } t;
955 :
956 0 : t.X[0] = MBEDTLS_GET_UINT32_LE(input, 0); t.X[0] ^= *RK++;
957 0 : t.X[1] = MBEDTLS_GET_UINT32_LE(input, 4); t.X[1] ^= *RK++;
958 0 : t.X[2] = MBEDTLS_GET_UINT32_LE(input, 8); t.X[2] ^= *RK++;
959 0 : t.X[3] = MBEDTLS_GET_UINT32_LE(input, 12); t.X[3] ^= *RK++;
960 :
961 0 : for (i = (ctx->nr >> 1) - 1; i > 0; i--) {
962 0 : AES_RROUND(t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3]);
963 0 : AES_RROUND(t.X[0], t.X[1], t.X[2], t.X[3], t.Y[0], t.Y[1], t.Y[2], t.Y[3]);
964 : }
965 :
966 0 : AES_RROUND(t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3]);
967 :
968 0 : t.X[0] = *RK++ ^ \
969 0 : ((uint32_t) RSb[MBEDTLS_BYTE_0(t.Y[0])]) ^
970 0 : ((uint32_t) RSb[MBEDTLS_BYTE_1(t.Y[3])] << 8) ^
971 0 : ((uint32_t) RSb[MBEDTLS_BYTE_2(t.Y[2])] << 16) ^
972 0 : ((uint32_t) RSb[MBEDTLS_BYTE_3(t.Y[1])] << 24);
973 :
974 0 : t.X[1] = *RK++ ^ \
975 0 : ((uint32_t) RSb[MBEDTLS_BYTE_0(t.Y[1])]) ^
976 0 : ((uint32_t) RSb[MBEDTLS_BYTE_1(t.Y[0])] << 8) ^
977 0 : ((uint32_t) RSb[MBEDTLS_BYTE_2(t.Y[3])] << 16) ^
978 0 : ((uint32_t) RSb[MBEDTLS_BYTE_3(t.Y[2])] << 24);
979 :
980 0 : t.X[2] = *RK++ ^ \
981 0 : ((uint32_t) RSb[MBEDTLS_BYTE_0(t.Y[2])]) ^
982 0 : ((uint32_t) RSb[MBEDTLS_BYTE_1(t.Y[1])] << 8) ^
983 0 : ((uint32_t) RSb[MBEDTLS_BYTE_2(t.Y[0])] << 16) ^
984 0 : ((uint32_t) RSb[MBEDTLS_BYTE_3(t.Y[3])] << 24);
985 :
986 0 : t.X[3] = *RK++ ^ \
987 0 : ((uint32_t) RSb[MBEDTLS_BYTE_0(t.Y[3])]) ^
988 0 : ((uint32_t) RSb[MBEDTLS_BYTE_1(t.Y[2])] << 8) ^
989 0 : ((uint32_t) RSb[MBEDTLS_BYTE_2(t.Y[1])] << 16) ^
990 0 : ((uint32_t) RSb[MBEDTLS_BYTE_3(t.Y[0])] << 24);
991 :
992 0 : MBEDTLS_PUT_UINT32_LE(t.X[0], output, 0);
993 0 : MBEDTLS_PUT_UINT32_LE(t.X[1], output, 4);
994 0 : MBEDTLS_PUT_UINT32_LE(t.X[2], output, 8);
995 0 : MBEDTLS_PUT_UINT32_LE(t.X[3], output, 12);
996 :
997 0 : mbedtls_platform_zeroize(&t, sizeof(t));
998 :
999 0 : return 0;
1000 : }
1001 : #endif /* !MBEDTLS_AES_DECRYPT_ALT && !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
1002 :
1003 : /* VIA Padlock and our intrinsics-based implementation of AESNI require
1004 : * the round keys to be aligned on a 16-byte boundary. We take care of this
1005 : * before creating them, but the AES context may have moved (this can happen
1006 : * if the library is called from a language with managed memory), and in later
1007 : * calls it might have a different alignment with respect to 16-byte memory.
1008 : * So we may need to realign.
1009 : */
1010 0 : MBEDTLS_MAYBE_UNUSED static void aes_maybe_realign(mbedtls_aes_context *ctx)
1011 : {
1012 0 : unsigned new_offset = mbedtls_aes_rk_offset(ctx->buf);
1013 0 : if (new_offset != ctx->rk_offset) {
1014 0 : memmove(ctx->buf + new_offset, // new address
1015 0 : ctx->buf + ctx->rk_offset, // current address
1016 0 : (ctx->nr + 1) * 16); // number of round keys * bytes per rk
1017 0 : ctx->rk_offset = new_offset;
1018 : }
1019 0 : }
1020 :
1021 : /*
1022 : * AES-ECB block encryption/decryption
1023 : */
1024 3620 : int mbedtls_aes_crypt_ecb(mbedtls_aes_context *ctx,
1025 : int mode,
1026 : const unsigned char input[16],
1027 : unsigned char output[16])
1028 : {
1029 3620 : if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) {
1030 0 : return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
1031 : }
1032 :
1033 : #if defined(MAY_NEED_TO_ALIGN)
1034 : aes_maybe_realign(ctx);
1035 : #endif
1036 :
1037 : #if defined(MBEDTLS_AESNI_HAVE_CODE)
1038 3620 : if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
1039 3620 : return mbedtls_aesni_crypt_ecb(ctx, mode, input, output);
1040 : }
1041 : #endif
1042 :
1043 : #if defined(MBEDTLS_AESCE_HAVE_CODE)
1044 : if (MBEDTLS_AESCE_HAS_SUPPORT()) {
1045 : return mbedtls_aesce_crypt_ecb(ctx, mode, input, output);
1046 : }
1047 : #endif
1048 :
1049 : #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE)
1050 : if (aes_padlock_ace > 0) {
1051 : return mbedtls_padlock_xcryptecb(ctx, mode, input, output);
1052 : }
1053 : #endif
1054 :
1055 : #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
1056 : #if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
1057 0 : if (mode == MBEDTLS_AES_DECRYPT) {
1058 0 : return mbedtls_internal_aes_decrypt(ctx, input, output);
1059 : } else
1060 : #endif
1061 : {
1062 0 : return mbedtls_internal_aes_encrypt(ctx, input, output);
1063 : }
1064 : #endif /* !MBEDTLS_AES_USE_HARDWARE_ONLY */
1065 : }
1066 :
1067 : #if defined(MBEDTLS_CIPHER_MODE_CBC)
1068 :
1069 : /*
1070 : * AES-CBC buffer encryption/decryption
1071 : */
1072 : int mbedtls_aes_crypt_cbc(mbedtls_aes_context *ctx,
1073 : int mode,
1074 : size_t length,
1075 : unsigned char iv[16],
1076 : const unsigned char *input,
1077 : unsigned char *output)
1078 : {
1079 : int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
1080 : unsigned char temp[16];
1081 :
1082 : if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) {
1083 : return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
1084 : }
1085 :
1086 : /* Nothing to do if length is zero. */
1087 : if (length == 0) {
1088 : return 0;
1089 : }
1090 :
1091 : if (length % 16) {
1092 : return MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH;
1093 : }
1094 :
1095 : #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE)
1096 : if (aes_padlock_ace > 0) {
1097 : if (mbedtls_padlock_xcryptcbc(ctx, mode, length, iv, input, output) == 0) {
1098 : return 0;
1099 : }
1100 :
1101 : // If padlock data misaligned, we just fall back to
1102 : // unaccelerated mode
1103 : //
1104 : }
1105 : #endif
1106 :
1107 : const unsigned char *ivp = iv;
1108 :
1109 : if (mode == MBEDTLS_AES_DECRYPT) {
1110 : while (length > 0) {
1111 : memcpy(temp, input, 16);
1112 : ret = mbedtls_aes_crypt_ecb(ctx, mode, input, output);
1113 : if (ret != 0) {
1114 : goto exit;
1115 : }
1116 : /* Avoid using the NEON implementation of mbedtls_xor. Because of the dependency on
1117 : * the result for the next block in CBC, and the cost of transferring that data from
1118 : * NEON registers, NEON is slower on aarch64. */
1119 : mbedtls_xor_no_simd(output, output, iv, 16);
1120 :
1121 : memcpy(iv, temp, 16);
1122 :
1123 : input += 16;
1124 : output += 16;
1125 : length -= 16;
1126 : }
1127 : } else {
1128 : while (length > 0) {
1129 : mbedtls_xor_no_simd(output, input, ivp, 16);
1130 :
1131 : ret = mbedtls_aes_crypt_ecb(ctx, mode, output, output);
1132 : if (ret != 0) {
1133 : goto exit;
1134 : }
1135 : ivp = output;
1136 :
1137 : input += 16;
1138 : output += 16;
1139 : length -= 16;
1140 : }
1141 : memcpy(iv, ivp, 16);
1142 : }
1143 : ret = 0;
1144 :
1145 : exit:
1146 : return ret;
1147 : }
1148 : #endif /* MBEDTLS_CIPHER_MODE_CBC */
1149 :
1150 : #if defined(MBEDTLS_CIPHER_MODE_XTS)
1151 :
1152 : typedef unsigned char mbedtls_be128[16];
1153 :
1154 : /*
1155 : * GF(2^128) multiplication function
1156 : *
1157 : * This function multiplies a field element by x in the polynomial field
1158 : * representation. It uses 64-bit word operations to gain speed but compensates
1159 : * for machine endianness and hence works correctly on both big and little
1160 : * endian machines.
1161 : */
1162 : #if defined(MBEDTLS_AESCE_C) || defined(MBEDTLS_AESNI_C)
1163 : MBEDTLS_OPTIMIZE_FOR_PERFORMANCE
1164 : #endif
1165 : static inline void mbedtls_gf128mul_x_ble(unsigned char r[16],
1166 : const unsigned char x[16])
1167 : {
1168 : uint64_t a, b, ra, rb;
1169 :
1170 : a = MBEDTLS_GET_UINT64_LE(x, 0);
1171 : b = MBEDTLS_GET_UINT64_LE(x, 8);
1172 :
1173 : ra = (a << 1) ^ 0x0087 >> (8 - ((b >> 63) << 3));
1174 : rb = (a >> 63) | (b << 1);
1175 :
1176 : MBEDTLS_PUT_UINT64_LE(ra, r, 0);
1177 : MBEDTLS_PUT_UINT64_LE(rb, r, 8);
1178 : }
1179 :
1180 : /*
1181 : * AES-XTS buffer encryption/decryption
1182 : *
1183 : * Use of MBEDTLS_OPTIMIZE_FOR_PERFORMANCE here and for mbedtls_gf128mul_x_ble()
1184 : * is a 3x performance improvement for gcc -Os, if we have hardware AES support.
1185 : */
1186 : #if defined(MBEDTLS_AESCE_C) || defined(MBEDTLS_AESNI_C)
1187 : MBEDTLS_OPTIMIZE_FOR_PERFORMANCE
1188 : #endif
1189 : int mbedtls_aes_crypt_xts(mbedtls_aes_xts_context *ctx,
1190 : int mode,
1191 : size_t length,
1192 : const unsigned char data_unit[16],
1193 : const unsigned char *input,
1194 : unsigned char *output)
1195 : {
1196 : int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
1197 : size_t blocks = length / 16;
1198 : size_t leftover = length % 16;
1199 : unsigned char tweak[16];
1200 : unsigned char prev_tweak[16];
1201 : unsigned char tmp[16];
1202 :
1203 : if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) {
1204 : return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
1205 : }
1206 :
1207 : /* Data units must be at least 16 bytes long. */
1208 : if (length < 16) {
1209 : return MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH;
1210 : }
1211 :
1212 : /* NIST SP 800-38E disallows data units larger than 2**20 blocks. */
1213 : if (length > (1 << 20) * 16) {
1214 : return MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH;
1215 : }
1216 :
1217 : /* Compute the tweak. */
1218 : ret = mbedtls_aes_crypt_ecb(&ctx->tweak, MBEDTLS_AES_ENCRYPT,
1219 : data_unit, tweak);
1220 : if (ret != 0) {
1221 : return ret;
1222 : }
1223 :
1224 : while (blocks--) {
1225 : if (MBEDTLS_UNLIKELY(leftover && (mode == MBEDTLS_AES_DECRYPT) && blocks == 0)) {
1226 : /* We are on the last block in a decrypt operation that has
1227 : * leftover bytes, so we need to use the next tweak for this block,
1228 : * and this tweak for the leftover bytes. Save the current tweak for
1229 : * the leftovers and then update the current tweak for use on this,
1230 : * the last full block. */
1231 : memcpy(prev_tweak, tweak, sizeof(tweak));
1232 : mbedtls_gf128mul_x_ble(tweak, tweak);
1233 : }
1234 :
1235 : mbedtls_xor(tmp, input, tweak, 16);
1236 :
1237 : ret = mbedtls_aes_crypt_ecb(&ctx->crypt, mode, tmp, tmp);
1238 : if (ret != 0) {
1239 : return ret;
1240 : }
1241 :
1242 : mbedtls_xor(output, tmp, tweak, 16);
1243 :
1244 : /* Update the tweak for the next block. */
1245 : mbedtls_gf128mul_x_ble(tweak, tweak);
1246 :
1247 : output += 16;
1248 : input += 16;
1249 : }
1250 :
1251 : if (leftover) {
1252 : /* If we are on the leftover bytes in a decrypt operation, we need to
1253 : * use the previous tweak for these bytes (as saved in prev_tweak). */
1254 : unsigned char *t = mode == MBEDTLS_AES_DECRYPT ? prev_tweak : tweak;
1255 :
1256 : /* We are now on the final part of the data unit, which doesn't divide
1257 : * evenly by 16. It's time for ciphertext stealing. */
1258 : size_t i;
1259 : unsigned char *prev_output = output - 16;
1260 :
1261 : /* Copy ciphertext bytes from the previous block to our output for each
1262 : * byte of ciphertext we won't steal. */
1263 : for (i = 0; i < leftover; i++) {
1264 : output[i] = prev_output[i];
1265 : }
1266 :
1267 : /* Copy the remainder of the input for this final round. */
1268 : mbedtls_xor(tmp, input, t, leftover);
1269 :
1270 : /* Copy ciphertext bytes from the previous block for input in this
1271 : * round. */
1272 : mbedtls_xor(tmp + i, prev_output + i, t + i, 16 - i);
1273 :
1274 : ret = mbedtls_aes_crypt_ecb(&ctx->crypt, mode, tmp, tmp);
1275 : if (ret != 0) {
1276 : return ret;
1277 : }
1278 :
1279 : /* Write the result back to the previous block, overriding the previous
1280 : * output we copied. */
1281 : mbedtls_xor(prev_output, tmp, t, 16);
1282 : }
1283 :
1284 : return 0;
1285 : }
1286 : #endif /* MBEDTLS_CIPHER_MODE_XTS */
1287 :
1288 : #if defined(MBEDTLS_CIPHER_MODE_CFB)
1289 : /*
1290 : * AES-CFB128 buffer encryption/decryption
1291 : */
1292 : int mbedtls_aes_crypt_cfb128(mbedtls_aes_context *ctx,
1293 : int mode,
1294 : size_t length,
1295 : size_t *iv_off,
1296 : unsigned char iv[16],
1297 : const unsigned char *input,
1298 : unsigned char *output)
1299 : {
1300 : int c;
1301 : int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
1302 : size_t n;
1303 :
1304 : if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) {
1305 : return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
1306 : }
1307 :
1308 : n = *iv_off;
1309 :
1310 : if (n > 15) {
1311 : return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
1312 : }
1313 :
1314 : if (mode == MBEDTLS_AES_DECRYPT) {
1315 : while (length--) {
1316 : if (n == 0) {
1317 : ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, iv, iv);
1318 : if (ret != 0) {
1319 : goto exit;
1320 : }
1321 : }
1322 :
1323 : c = *input++;
1324 : *output++ = (unsigned char) (c ^ iv[n]);
1325 : iv[n] = (unsigned char) c;
1326 :
1327 : n = (n + 1) & 0x0F;
1328 : }
1329 : } else {
1330 : while (length--) {
1331 : if (n == 0) {
1332 : ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, iv, iv);
1333 : if (ret != 0) {
1334 : goto exit;
1335 : }
1336 : }
1337 :
1338 : iv[n] = *output++ = (unsigned char) (iv[n] ^ *input++);
1339 :
1340 : n = (n + 1) & 0x0F;
1341 : }
1342 : }
1343 :
1344 : *iv_off = n;
1345 : ret = 0;
1346 :
1347 : exit:
1348 : return ret;
1349 : }
1350 :
1351 : /*
1352 : * AES-CFB8 buffer encryption/decryption
1353 : */
1354 : int mbedtls_aes_crypt_cfb8(mbedtls_aes_context *ctx,
1355 : int mode,
1356 : size_t length,
1357 : unsigned char iv[16],
1358 : const unsigned char *input,
1359 : unsigned char *output)
1360 : {
1361 : int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
1362 : unsigned char c;
1363 : unsigned char ov[17];
1364 :
1365 : if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) {
1366 : return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
1367 : }
1368 : while (length--) {
1369 : memcpy(ov, iv, 16);
1370 : ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, iv, iv);
1371 : if (ret != 0) {
1372 : goto exit;
1373 : }
1374 :
1375 : if (mode == MBEDTLS_AES_DECRYPT) {
1376 : ov[16] = *input;
1377 : }
1378 :
1379 : c = *output++ = (unsigned char) (iv[0] ^ *input++);
1380 :
1381 : if (mode == MBEDTLS_AES_ENCRYPT) {
1382 : ov[16] = c;
1383 : }
1384 :
1385 : memcpy(iv, ov + 1, 16);
1386 : }
1387 : ret = 0;
1388 :
1389 : exit:
1390 : return ret;
1391 : }
1392 : #endif /* MBEDTLS_CIPHER_MODE_CFB */
1393 :
1394 : #if defined(MBEDTLS_CIPHER_MODE_OFB)
1395 : /*
1396 : * AES-OFB (Output Feedback Mode) buffer encryption/decryption
1397 : */
1398 : int mbedtls_aes_crypt_ofb(mbedtls_aes_context *ctx,
1399 : size_t length,
1400 : size_t *iv_off,
1401 : unsigned char iv[16],
1402 : const unsigned char *input,
1403 : unsigned char *output)
1404 : {
1405 : int ret = 0;
1406 : size_t n;
1407 :
1408 : n = *iv_off;
1409 :
1410 : if (n > 15) {
1411 : return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
1412 : }
1413 :
1414 : while (length--) {
1415 : if (n == 0) {
1416 : ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, iv, iv);
1417 : if (ret != 0) {
1418 : goto exit;
1419 : }
1420 : }
1421 : *output++ = *input++ ^ iv[n];
1422 :
1423 : n = (n + 1) & 0x0F;
1424 : }
1425 :
1426 : *iv_off = n;
1427 :
1428 : exit:
1429 : return ret;
1430 : }
1431 : #endif /* MBEDTLS_CIPHER_MODE_OFB */
1432 :
1433 : #if defined(MBEDTLS_CIPHER_MODE_CTR)
1434 : /*
1435 : * AES-CTR buffer encryption/decryption
1436 : */
1437 : int mbedtls_aes_crypt_ctr(mbedtls_aes_context *ctx,
1438 : size_t length,
1439 : size_t *nc_off,
1440 : unsigned char nonce_counter[16],
1441 : unsigned char stream_block[16],
1442 : const unsigned char *input,
1443 : unsigned char *output)
1444 : {
1445 : int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
1446 :
1447 : size_t offset = *nc_off;
1448 :
1449 : if (offset > 0x0F) {
1450 : return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
1451 : }
1452 :
1453 : for (size_t i = 0; i < length;) {
1454 : size_t n = 16;
1455 : if (offset == 0) {
1456 : ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, nonce_counter, stream_block);
1457 : if (ret != 0) {
1458 : goto exit;
1459 : }
1460 : mbedtls_ctr_increment_counter(nonce_counter);
1461 : } else {
1462 : n -= offset;
1463 : }
1464 :
1465 : if (n > (length - i)) {
1466 : n = (length - i);
1467 : }
1468 : mbedtls_xor(&output[i], &input[i], &stream_block[offset], n);
1469 : // offset might be non-zero for the last block, but in that case, we don't use it again
1470 : offset = 0;
1471 : i += n;
1472 : }
1473 :
1474 : // capture offset for future resumption
1475 : *nc_off = (*nc_off + length) % 16;
1476 :
1477 : ret = 0;
1478 :
1479 : exit:
1480 : return ret;
1481 : }
1482 : #endif /* MBEDTLS_CIPHER_MODE_CTR */
1483 :
1484 : #endif /* !MBEDTLS_AES_ALT */
1485 :
1486 : #if defined(MBEDTLS_SELF_TEST)
1487 : /*
1488 : * AES test vectors from:
1489 : *
1490 : * http://csrc.nist.gov/archive/aes/rijndael/rijndael-vals.zip
1491 : */
1492 : #if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
1493 : static const unsigned char aes_test_ecb_dec[][16] =
1494 : {
1495 : { 0x44, 0x41, 0x6A, 0xC2, 0xD1, 0xF5, 0x3C, 0x58,
1496 : 0x33, 0x03, 0x91, 0x7E, 0x6B, 0xE9, 0xEB, 0xE0 },
1497 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
1498 : { 0x48, 0xE3, 0x1E, 0x9E, 0x25, 0x67, 0x18, 0xF2,
1499 : 0x92, 0x29, 0x31, 0x9C, 0x19, 0xF1, 0x5B, 0xA4 },
1500 : { 0x05, 0x8C, 0xCF, 0xFD, 0xBB, 0xCB, 0x38, 0x2D,
1501 : 0x1F, 0x6F, 0x56, 0x58, 0x5D, 0x8A, 0x4A, 0xDE }
1502 : #endif
1503 : };
1504 : #endif
1505 :
1506 : static const unsigned char aes_test_ecb_enc[][16] =
1507 : {
1508 : { 0xC3, 0x4C, 0x05, 0x2C, 0xC0, 0xDA, 0x8D, 0x73,
1509 : 0x45, 0x1A, 0xFE, 0x5F, 0x03, 0xBE, 0x29, 0x7F },
1510 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
1511 : { 0xF3, 0xF6, 0x75, 0x2A, 0xE8, 0xD7, 0x83, 0x11,
1512 : 0x38, 0xF0, 0x41, 0x56, 0x06, 0x31, 0xB1, 0x14 },
1513 : { 0x8B, 0x79, 0xEE, 0xCC, 0x93, 0xA0, 0xEE, 0x5D,
1514 : 0xFF, 0x30, 0xB4, 0xEA, 0x21, 0x63, 0x6D, 0xA4 }
1515 : #endif
1516 : };
1517 :
1518 : #if defined(MBEDTLS_CIPHER_MODE_CBC)
1519 : static const unsigned char aes_test_cbc_dec[][16] =
1520 : {
1521 : { 0xFA, 0xCA, 0x37, 0xE0, 0xB0, 0xC8, 0x53, 0x73,
1522 : 0xDF, 0x70, 0x6E, 0x73, 0xF7, 0xC9, 0xAF, 0x86 },
1523 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
1524 : { 0x5D, 0xF6, 0x78, 0xDD, 0x17, 0xBA, 0x4E, 0x75,
1525 : 0xB6, 0x17, 0x68, 0xC6, 0xAD, 0xEF, 0x7C, 0x7B },
1526 : { 0x48, 0x04, 0xE1, 0x81, 0x8F, 0xE6, 0x29, 0x75,
1527 : 0x19, 0xA3, 0xE8, 0x8C, 0x57, 0x31, 0x04, 0x13 }
1528 : #endif
1529 : };
1530 :
1531 : static const unsigned char aes_test_cbc_enc[][16] =
1532 : {
1533 : { 0x8A, 0x05, 0xFC, 0x5E, 0x09, 0x5A, 0xF4, 0x84,
1534 : 0x8A, 0x08, 0xD3, 0x28, 0xD3, 0x68, 0x8E, 0x3D },
1535 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
1536 : { 0x7B, 0xD9, 0x66, 0xD5, 0x3A, 0xD8, 0xC1, 0xBB,
1537 : 0x85, 0xD2, 0xAD, 0xFA, 0xE8, 0x7B, 0xB1, 0x04 },
1538 : { 0xFE, 0x3C, 0x53, 0x65, 0x3E, 0x2F, 0x45, 0xB5,
1539 : 0x6F, 0xCD, 0x88, 0xB2, 0xCC, 0x89, 0x8F, 0xF0 }
1540 : #endif
1541 : };
1542 : #endif /* MBEDTLS_CIPHER_MODE_CBC */
1543 :
1544 : #if defined(MBEDTLS_CIPHER_MODE_CFB)
1545 : /*
1546 : * AES-CFB128 test vectors from:
1547 : *
1548 : * http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
1549 : */
1550 : static const unsigned char aes_test_cfb128_key[][32] =
1551 : {
1552 : { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6,
1553 : 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C },
1554 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
1555 : { 0x8E, 0x73, 0xB0, 0xF7, 0xDA, 0x0E, 0x64, 0x52,
1556 : 0xC8, 0x10, 0xF3, 0x2B, 0x80, 0x90, 0x79, 0xE5,
1557 : 0x62, 0xF8, 0xEA, 0xD2, 0x52, 0x2C, 0x6B, 0x7B },
1558 : { 0x60, 0x3D, 0xEB, 0x10, 0x15, 0xCA, 0x71, 0xBE,
1559 : 0x2B, 0x73, 0xAE, 0xF0, 0x85, 0x7D, 0x77, 0x81,
1560 : 0x1F, 0x35, 0x2C, 0x07, 0x3B, 0x61, 0x08, 0xD7,
1561 : 0x2D, 0x98, 0x10, 0xA3, 0x09, 0x14, 0xDF, 0xF4 }
1562 : #endif
1563 : };
1564 :
1565 : static const unsigned char aes_test_cfb128_iv[16] =
1566 : {
1567 : 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
1568 : 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F
1569 : };
1570 :
1571 : static const unsigned char aes_test_cfb128_pt[64] =
1572 : {
1573 : 0x6B, 0xC1, 0xBE, 0xE2, 0x2E, 0x40, 0x9F, 0x96,
1574 : 0xE9, 0x3D, 0x7E, 0x11, 0x73, 0x93, 0x17, 0x2A,
1575 : 0xAE, 0x2D, 0x8A, 0x57, 0x1E, 0x03, 0xAC, 0x9C,
1576 : 0x9E, 0xB7, 0x6F, 0xAC, 0x45, 0xAF, 0x8E, 0x51,
1577 : 0x30, 0xC8, 0x1C, 0x46, 0xA3, 0x5C, 0xE4, 0x11,
1578 : 0xE5, 0xFB, 0xC1, 0x19, 0x1A, 0x0A, 0x52, 0xEF,
1579 : 0xF6, 0x9F, 0x24, 0x45, 0xDF, 0x4F, 0x9B, 0x17,
1580 : 0xAD, 0x2B, 0x41, 0x7B, 0xE6, 0x6C, 0x37, 0x10
1581 : };
1582 :
1583 : static const unsigned char aes_test_cfb128_ct[][64] =
1584 : {
1585 : { 0x3B, 0x3F, 0xD9, 0x2E, 0xB7, 0x2D, 0xAD, 0x20,
1586 : 0x33, 0x34, 0x49, 0xF8, 0xE8, 0x3C, 0xFB, 0x4A,
1587 : 0xC8, 0xA6, 0x45, 0x37, 0xA0, 0xB3, 0xA9, 0x3F,
1588 : 0xCD, 0xE3, 0xCD, 0xAD, 0x9F, 0x1C, 0xE5, 0x8B,
1589 : 0x26, 0x75, 0x1F, 0x67, 0xA3, 0xCB, 0xB1, 0x40,
1590 : 0xB1, 0x80, 0x8C, 0xF1, 0x87, 0xA4, 0xF4, 0xDF,
1591 : 0xC0, 0x4B, 0x05, 0x35, 0x7C, 0x5D, 0x1C, 0x0E,
1592 : 0xEA, 0xC4, 0xC6, 0x6F, 0x9F, 0xF7, 0xF2, 0xE6 },
1593 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
1594 : { 0xCD, 0xC8, 0x0D, 0x6F, 0xDD, 0xF1, 0x8C, 0xAB,
1595 : 0x34, 0xC2, 0x59, 0x09, 0xC9, 0x9A, 0x41, 0x74,
1596 : 0x67, 0xCE, 0x7F, 0x7F, 0x81, 0x17, 0x36, 0x21,
1597 : 0x96, 0x1A, 0x2B, 0x70, 0x17, 0x1D, 0x3D, 0x7A,
1598 : 0x2E, 0x1E, 0x8A, 0x1D, 0xD5, 0x9B, 0x88, 0xB1,
1599 : 0xC8, 0xE6, 0x0F, 0xED, 0x1E, 0xFA, 0xC4, 0xC9,
1600 : 0xC0, 0x5F, 0x9F, 0x9C, 0xA9, 0x83, 0x4F, 0xA0,
1601 : 0x42, 0xAE, 0x8F, 0xBA, 0x58, 0x4B, 0x09, 0xFF },
1602 : { 0xDC, 0x7E, 0x84, 0xBF, 0xDA, 0x79, 0x16, 0x4B,
1603 : 0x7E, 0xCD, 0x84, 0x86, 0x98, 0x5D, 0x38, 0x60,
1604 : 0x39, 0xFF, 0xED, 0x14, 0x3B, 0x28, 0xB1, 0xC8,
1605 : 0x32, 0x11, 0x3C, 0x63, 0x31, 0xE5, 0x40, 0x7B,
1606 : 0xDF, 0x10, 0x13, 0x24, 0x15, 0xE5, 0x4B, 0x92,
1607 : 0xA1, 0x3E, 0xD0, 0xA8, 0x26, 0x7A, 0xE2, 0xF9,
1608 : 0x75, 0xA3, 0x85, 0x74, 0x1A, 0xB9, 0xCE, 0xF8,
1609 : 0x20, 0x31, 0x62, 0x3D, 0x55, 0xB1, 0xE4, 0x71 }
1610 : #endif
1611 : };
1612 : #endif /* MBEDTLS_CIPHER_MODE_CFB */
1613 :
1614 : #if defined(MBEDTLS_CIPHER_MODE_OFB)
1615 : /*
1616 : * AES-OFB test vectors from:
1617 : *
1618 : * https://csrc.nist.gov/publications/detail/sp/800-38a/final
1619 : */
1620 : static const unsigned char aes_test_ofb_key[][32] =
1621 : {
1622 : { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6,
1623 : 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C },
1624 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
1625 : { 0x8E, 0x73, 0xB0, 0xF7, 0xDA, 0x0E, 0x64, 0x52,
1626 : 0xC8, 0x10, 0xF3, 0x2B, 0x80, 0x90, 0x79, 0xE5,
1627 : 0x62, 0xF8, 0xEA, 0xD2, 0x52, 0x2C, 0x6B, 0x7B },
1628 : { 0x60, 0x3D, 0xEB, 0x10, 0x15, 0xCA, 0x71, 0xBE,
1629 : 0x2B, 0x73, 0xAE, 0xF0, 0x85, 0x7D, 0x77, 0x81,
1630 : 0x1F, 0x35, 0x2C, 0x07, 0x3B, 0x61, 0x08, 0xD7,
1631 : 0x2D, 0x98, 0x10, 0xA3, 0x09, 0x14, 0xDF, 0xF4 }
1632 : #endif
1633 : };
1634 :
1635 : static const unsigned char aes_test_ofb_iv[16] =
1636 : {
1637 : 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
1638 : 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F
1639 : };
1640 :
1641 : static const unsigned char aes_test_ofb_pt[64] =
1642 : {
1643 : 0x6B, 0xC1, 0xBE, 0xE2, 0x2E, 0x40, 0x9F, 0x96,
1644 : 0xE9, 0x3D, 0x7E, 0x11, 0x73, 0x93, 0x17, 0x2A,
1645 : 0xAE, 0x2D, 0x8A, 0x57, 0x1E, 0x03, 0xAC, 0x9C,
1646 : 0x9E, 0xB7, 0x6F, 0xAC, 0x45, 0xAF, 0x8E, 0x51,
1647 : 0x30, 0xC8, 0x1C, 0x46, 0xA3, 0x5C, 0xE4, 0x11,
1648 : 0xE5, 0xFB, 0xC1, 0x19, 0x1A, 0x0A, 0x52, 0xEF,
1649 : 0xF6, 0x9F, 0x24, 0x45, 0xDF, 0x4F, 0x9B, 0x17,
1650 : 0xAD, 0x2B, 0x41, 0x7B, 0xE6, 0x6C, 0x37, 0x10
1651 : };
1652 :
1653 : static const unsigned char aes_test_ofb_ct[][64] =
1654 : {
1655 : { 0x3B, 0x3F, 0xD9, 0x2E, 0xB7, 0x2D, 0xAD, 0x20,
1656 : 0x33, 0x34, 0x49, 0xF8, 0xE8, 0x3C, 0xFB, 0x4A,
1657 : 0x77, 0x89, 0x50, 0x8d, 0x16, 0x91, 0x8f, 0x03,
1658 : 0xf5, 0x3c, 0x52, 0xda, 0xc5, 0x4e, 0xd8, 0x25,
1659 : 0x97, 0x40, 0x05, 0x1e, 0x9c, 0x5f, 0xec, 0xf6,
1660 : 0x43, 0x44, 0xf7, 0xa8, 0x22, 0x60, 0xed, 0xcc,
1661 : 0x30, 0x4c, 0x65, 0x28, 0xf6, 0x59, 0xc7, 0x78,
1662 : 0x66, 0xa5, 0x10, 0xd9, 0xc1, 0xd6, 0xae, 0x5e },
1663 : #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
1664 : { 0xCD, 0xC8, 0x0D, 0x6F, 0xDD, 0xF1, 0x8C, 0xAB,
1665 : 0x34, 0xC2, 0x59, 0x09, 0xC9, 0x9A, 0x41, 0x74,
1666 : 0xfc, 0xc2, 0x8b, 0x8d, 0x4c, 0x63, 0x83, 0x7c,
1667 : 0x09, 0xe8, 0x17, 0x00, 0xc1, 0x10, 0x04, 0x01,
1668 : 0x8d, 0x9a, 0x9a, 0xea, 0xc0, 0xf6, 0x59, 0x6f,
1669 : 0x55, 0x9c, 0x6d, 0x4d, 0xaf, 0x59, 0xa5, 0xf2,
1670 : 0x6d, 0x9f, 0x20, 0x08, 0x57, 0xca, 0x6c, 0x3e,
1671 : 0x9c, 0xac, 0x52, 0x4b, 0xd9, 0xac, 0xc9, 0x2a },
1672 : { 0xDC, 0x7E, 0x84, 0xBF, 0xDA, 0x79, 0x16, 0x4B,
1673 : 0x7E, 0xCD, 0x84, 0x86, 0x98, 0x5D, 0x38, 0x60,
1674 : 0x4f, 0xeb, 0xdc, 0x67, 0x40, 0xd2, 0x0b, 0x3a,
1675 : 0xc8, 0x8f, 0x6a, 0xd8, 0x2a, 0x4f, 0xb0, 0x8d,
1676 : 0x71, 0xab, 0x47, 0xa0, 0x86, 0xe8, 0x6e, 0xed,
1677 : 0xf3, 0x9d, 0x1c, 0x5b, 0xba, 0x97, 0xc4, 0x08,
1678 : 0x01, 0x26, 0x14, 0x1d, 0x67, 0xf3, 0x7b, 0xe8,
1679 : 0x53, 0x8f, 0x5a, 0x8b, 0xe7, 0x40, 0xe4, 0x84 }
1680 : #endif
1681 : };
1682 : #endif /* MBEDTLS_CIPHER_MODE_OFB */
1683 :
1684 : #if defined(MBEDTLS_CIPHER_MODE_CTR)
1685 : /*
1686 : * AES-CTR test vectors from:
1687 : *
1688 : * http://www.faqs.org/rfcs/rfc3686.html
1689 : */
1690 :
1691 : static const unsigned char aes_test_ctr_key[][16] =
1692 : {
1693 : { 0xAE, 0x68, 0x52, 0xF8, 0x12, 0x10, 0x67, 0xCC,
1694 : 0x4B, 0xF7, 0xA5, 0x76, 0x55, 0x77, 0xF3, 0x9E },
1695 : { 0x7E, 0x24, 0x06, 0x78, 0x17, 0xFA, 0xE0, 0xD7,
1696 : 0x43, 0xD6, 0xCE, 0x1F, 0x32, 0x53, 0x91, 0x63 },
1697 : { 0x76, 0x91, 0xBE, 0x03, 0x5E, 0x50, 0x20, 0xA8,
1698 : 0xAC, 0x6E, 0x61, 0x85, 0x29, 0xF9, 0xA0, 0xDC }
1699 : };
1700 :
1701 : static const unsigned char aes_test_ctr_nonce_counter[][16] =
1702 : {
1703 : { 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
1704 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
1705 : { 0x00, 0x6C, 0xB6, 0xDB, 0xC0, 0x54, 0x3B, 0x59,
1706 : 0xDA, 0x48, 0xD9, 0x0B, 0x00, 0x00, 0x00, 0x01 },
1707 : { 0x00, 0xE0, 0x01, 0x7B, 0x27, 0x77, 0x7F, 0x3F,
1708 : 0x4A, 0x17, 0x86, 0xF0, 0x00, 0x00, 0x00, 0x01 }
1709 : };
1710 :
1711 : static const unsigned char aes_test_ctr_pt[][48] =
1712 : {
1713 : { 0x53, 0x69, 0x6E, 0x67, 0x6C, 0x65, 0x20, 0x62,
1714 : 0x6C, 0x6F, 0x63, 0x6B, 0x20, 0x6D, 0x73, 0x67 },
1715 : { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
1716 : 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
1717 : 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
1718 : 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F },
1719 :
1720 : { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
1721 : 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
1722 : 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
1723 : 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
1724 : 0x20, 0x21, 0x22, 0x23 }
1725 : };
1726 :
1727 : static const unsigned char aes_test_ctr_ct[][48] =
1728 : {
1729 : { 0xE4, 0x09, 0x5D, 0x4F, 0xB7, 0xA7, 0xB3, 0x79,
1730 : 0x2D, 0x61, 0x75, 0xA3, 0x26, 0x13, 0x11, 0xB8 },
1731 : { 0x51, 0x04, 0xA1, 0x06, 0x16, 0x8A, 0x72, 0xD9,
1732 : 0x79, 0x0D, 0x41, 0xEE, 0x8E, 0xDA, 0xD3, 0x88,
1733 : 0xEB, 0x2E, 0x1E, 0xFC, 0x46, 0xDA, 0x57, 0xC8,
1734 : 0xFC, 0xE6, 0x30, 0xDF, 0x91, 0x41, 0xBE, 0x28 },
1735 : { 0xC1, 0xCF, 0x48, 0xA8, 0x9F, 0x2F, 0xFD, 0xD9,
1736 : 0xCF, 0x46, 0x52, 0xE9, 0xEF, 0xDB, 0x72, 0xD7,
1737 : 0x45, 0x40, 0xA4, 0x2B, 0xDE, 0x6D, 0x78, 0x36,
1738 : 0xD5, 0x9A, 0x5C, 0xEA, 0xAE, 0xF3, 0x10, 0x53,
1739 : 0x25, 0xB2, 0x07, 0x2F }
1740 : };
1741 :
1742 : static const int aes_test_ctr_len[3] =
1743 : { 16, 32, 36 };
1744 : #endif /* MBEDTLS_CIPHER_MODE_CTR */
1745 :
1746 : #if defined(MBEDTLS_CIPHER_MODE_XTS)
1747 : /*
1748 : * AES-XTS test vectors from:
1749 : *
1750 : * IEEE P1619/D16 Annex B
1751 : * https://web.archive.org/web/20150629024421/http://grouper.ieee.org/groups/1619/email/pdf00086.pdf
1752 : * (Archived from original at http://grouper.ieee.org/groups/1619/email/pdf00086.pdf)
1753 : */
1754 : static const unsigned char aes_test_xts_key[][32] =
1755 : {
1756 : { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1757 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1758 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1759 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
1760 : { 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
1761 : 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
1762 : 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
1763 : 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 },
1764 : { 0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8,
1765 : 0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0,
1766 : 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
1767 : 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 },
1768 : };
1769 :
1770 : static const unsigned char aes_test_xts_pt32[][32] =
1771 : {
1772 : { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1773 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1774 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1775 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
1776 : { 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
1777 : 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
1778 : 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
1779 : 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44 },
1780 : { 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
1781 : 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
1782 : 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
1783 : 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44 },
1784 : };
1785 :
1786 : static const unsigned char aes_test_xts_ct32[][32] =
1787 : {
1788 : { 0x91, 0x7c, 0xf6, 0x9e, 0xbd, 0x68, 0xb2, 0xec,
1789 : 0x9b, 0x9f, 0xe9, 0xa3, 0xea, 0xdd, 0xa6, 0x92,
1790 : 0xcd, 0x43, 0xd2, 0xf5, 0x95, 0x98, 0xed, 0x85,
1791 : 0x8c, 0x02, 0xc2, 0x65, 0x2f, 0xbf, 0x92, 0x2e },
1792 : { 0xc4, 0x54, 0x18, 0x5e, 0x6a, 0x16, 0x93, 0x6e,
1793 : 0x39, 0x33, 0x40, 0x38, 0xac, 0xef, 0x83, 0x8b,
1794 : 0xfb, 0x18, 0x6f, 0xff, 0x74, 0x80, 0xad, 0xc4,
1795 : 0x28, 0x93, 0x82, 0xec, 0xd6, 0xd3, 0x94, 0xf0 },
1796 : { 0xaf, 0x85, 0x33, 0x6b, 0x59, 0x7a, 0xfc, 0x1a,
1797 : 0x90, 0x0b, 0x2e, 0xb2, 0x1e, 0xc9, 0x49, 0xd2,
1798 : 0x92, 0xdf, 0x4c, 0x04, 0x7e, 0x0b, 0x21, 0x53,
1799 : 0x21, 0x86, 0xa5, 0x97, 0x1a, 0x22, 0x7a, 0x89 },
1800 : };
1801 :
1802 : static const unsigned char aes_test_xts_data_unit[][16] =
1803 : {
1804 : { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1805 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
1806 : { 0x33, 0x33, 0x33, 0x33, 0x33, 0x00, 0x00, 0x00,
1807 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
1808 : { 0x33, 0x33, 0x33, 0x33, 0x33, 0x00, 0x00, 0x00,
1809 : 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
1810 : };
1811 :
1812 : #endif /* MBEDTLS_CIPHER_MODE_XTS */
1813 :
1814 : /*
1815 : * Checkup routine
1816 : */
1817 0 : int mbedtls_aes_self_test(int verbose)
1818 : {
1819 0 : int ret = 0, i, j, u, mode;
1820 : unsigned int keybits;
1821 : unsigned char key[32];
1822 : unsigned char buf[64];
1823 : const unsigned char *aes_tests;
1824 : #if defined(MBEDTLS_CIPHER_MODE_CBC) || defined(MBEDTLS_CIPHER_MODE_CFB) || \
1825 : defined(MBEDTLS_CIPHER_MODE_OFB)
1826 : unsigned char iv[16];
1827 : #endif
1828 : #if defined(MBEDTLS_CIPHER_MODE_CBC)
1829 : unsigned char prv[16];
1830 : #endif
1831 : #if defined(MBEDTLS_CIPHER_MODE_CTR) || defined(MBEDTLS_CIPHER_MODE_CFB) || \
1832 : defined(MBEDTLS_CIPHER_MODE_OFB)
1833 : size_t offset;
1834 : #endif
1835 : #if defined(MBEDTLS_CIPHER_MODE_CTR) || defined(MBEDTLS_CIPHER_MODE_XTS)
1836 : int len;
1837 : #endif
1838 : #if defined(MBEDTLS_CIPHER_MODE_CTR)
1839 : unsigned char nonce_counter[16];
1840 : unsigned char stream_block[16];
1841 : #endif
1842 : mbedtls_aes_context ctx;
1843 :
1844 0 : memset(key, 0, 32);
1845 0 : mbedtls_aes_init(&ctx);
1846 :
1847 0 : if (verbose != 0) {
1848 : #if defined(MBEDTLS_AES_ALT)
1849 : mbedtls_printf(" AES note: alternative implementation.\n");
1850 : #else /* MBEDTLS_AES_ALT */
1851 : #if defined(MBEDTLS_AESNI_HAVE_CODE)
1852 : #if MBEDTLS_AESNI_HAVE_CODE == 1
1853 0 : mbedtls_printf(" AES note: AESNI code present (assembly implementation).\n");
1854 : #elif MBEDTLS_AESNI_HAVE_CODE == 2
1855 : mbedtls_printf(" AES note: AESNI code present (intrinsics implementation).\n");
1856 : #else
1857 : #error "Unrecognised value for MBEDTLS_AESNI_HAVE_CODE"
1858 : #endif
1859 0 : if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
1860 0 : mbedtls_printf(" AES note: using AESNI.\n");
1861 : } else
1862 : #endif
1863 : #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE)
1864 : if (mbedtls_padlock_has_support(MBEDTLS_PADLOCK_ACE)) {
1865 : mbedtls_printf(" AES note: using VIA Padlock.\n");
1866 : } else
1867 : #endif
1868 : #if defined(MBEDTLS_AESCE_HAVE_CODE)
1869 : if (MBEDTLS_AESCE_HAS_SUPPORT()) {
1870 : mbedtls_printf(" AES note: using AESCE.\n");
1871 : } else
1872 : #endif
1873 : {
1874 : #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
1875 0 : mbedtls_printf(" AES note: built-in implementation.\n");
1876 : #endif
1877 : }
1878 : #endif /* MBEDTLS_AES_ALT */
1879 : }
1880 :
1881 : /*
1882 : * ECB mode
1883 : */
1884 : {
1885 : static const int num_tests =
1886 : sizeof(aes_test_ecb_enc) / sizeof(*aes_test_ecb_enc);
1887 :
1888 0 : for (i = 0; i < num_tests << 1; i++) {
1889 0 : u = i >> 1;
1890 0 : keybits = 128 + u * 64;
1891 0 : mode = i & 1;
1892 :
1893 0 : if (verbose != 0) {
1894 0 : mbedtls_printf(" AES-ECB-%3u (%s): ", keybits,
1895 : (mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
1896 : }
1897 : #if defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
1898 : if (mode == MBEDTLS_AES_DECRYPT) {
1899 : if (verbose != 0) {
1900 : mbedtls_printf("skipped\n");
1901 : }
1902 : continue;
1903 : }
1904 : #endif
1905 :
1906 0 : memset(buf, 0, 16);
1907 :
1908 : #if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
1909 0 : if (mode == MBEDTLS_AES_DECRYPT) {
1910 0 : ret = mbedtls_aes_setkey_dec(&ctx, key, keybits);
1911 0 : aes_tests = aes_test_ecb_dec[u];
1912 : } else
1913 : #endif
1914 : {
1915 0 : ret = mbedtls_aes_setkey_enc(&ctx, key, keybits);
1916 0 : aes_tests = aes_test_ecb_enc[u];
1917 : }
1918 :
1919 : /*
1920 : * AES-192 is an optional feature that may be unavailable when
1921 : * there is an alternative underlying implementation i.e. when
1922 : * MBEDTLS_AES_ALT is defined.
1923 : */
1924 0 : if (ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192) {
1925 0 : mbedtls_printf("skipped\n");
1926 0 : continue;
1927 0 : } else if (ret != 0) {
1928 0 : goto exit;
1929 : }
1930 :
1931 0 : for (j = 0; j < 10000; j++) {
1932 0 : ret = mbedtls_aes_crypt_ecb(&ctx, mode, buf, buf);
1933 0 : if (ret != 0) {
1934 0 : goto exit;
1935 : }
1936 : }
1937 :
1938 0 : if (memcmp(buf, aes_tests, 16) != 0) {
1939 0 : ret = 1;
1940 0 : goto exit;
1941 : }
1942 :
1943 0 : if (verbose != 0) {
1944 0 : mbedtls_printf("passed\n");
1945 : }
1946 : }
1947 :
1948 0 : if (verbose != 0) {
1949 0 : mbedtls_printf("\n");
1950 : }
1951 : }
1952 :
1953 : #if defined(MBEDTLS_CIPHER_MODE_CBC)
1954 : /*
1955 : * CBC mode
1956 : */
1957 : {
1958 : static const int num_tests =
1959 : sizeof(aes_test_cbc_dec) / sizeof(*aes_test_cbc_dec);
1960 :
1961 : for (i = 0; i < num_tests << 1; i++) {
1962 : u = i >> 1;
1963 : keybits = 128 + u * 64;
1964 : mode = i & 1;
1965 :
1966 : if (verbose != 0) {
1967 : mbedtls_printf(" AES-CBC-%3u (%s): ", keybits,
1968 : (mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
1969 : }
1970 :
1971 : memset(iv, 0, 16);
1972 : memset(prv, 0, 16);
1973 : memset(buf, 0, 16);
1974 :
1975 : if (mode == MBEDTLS_AES_DECRYPT) {
1976 : ret = mbedtls_aes_setkey_dec(&ctx, key, keybits);
1977 : aes_tests = aes_test_cbc_dec[u];
1978 : } else {
1979 : ret = mbedtls_aes_setkey_enc(&ctx, key, keybits);
1980 : aes_tests = aes_test_cbc_enc[u];
1981 : }
1982 :
1983 : /*
1984 : * AES-192 is an optional feature that may be unavailable when
1985 : * there is an alternative underlying implementation i.e. when
1986 : * MBEDTLS_AES_ALT is defined.
1987 : */
1988 : if (ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192) {
1989 : mbedtls_printf("skipped\n");
1990 : continue;
1991 : } else if (ret != 0) {
1992 : goto exit;
1993 : }
1994 :
1995 : for (j = 0; j < 10000; j++) {
1996 : if (mode == MBEDTLS_AES_ENCRYPT) {
1997 : unsigned char tmp[16];
1998 :
1999 : memcpy(tmp, prv, 16);
2000 : memcpy(prv, buf, 16);
2001 : memcpy(buf, tmp, 16);
2002 : }
2003 :
2004 : ret = mbedtls_aes_crypt_cbc(&ctx, mode, 16, iv, buf, buf);
2005 : if (ret != 0) {
2006 : goto exit;
2007 : }
2008 :
2009 : }
2010 :
2011 : if (memcmp(buf, aes_tests, 16) != 0) {
2012 : ret = 1;
2013 : goto exit;
2014 : }
2015 :
2016 : if (verbose != 0) {
2017 : mbedtls_printf("passed\n");
2018 : }
2019 : }
2020 :
2021 : if (verbose != 0) {
2022 : mbedtls_printf("\n");
2023 : }
2024 : }
2025 : #endif /* MBEDTLS_CIPHER_MODE_CBC */
2026 :
2027 : #if defined(MBEDTLS_CIPHER_MODE_CFB)
2028 : /*
2029 : * CFB128 mode
2030 : */
2031 : {
2032 : static const int num_tests =
2033 : sizeof(aes_test_cfb128_key) / sizeof(*aes_test_cfb128_key);
2034 :
2035 : for (i = 0; i < num_tests << 1; i++) {
2036 : u = i >> 1;
2037 : keybits = 128 + u * 64;
2038 : mode = i & 1;
2039 :
2040 : if (verbose != 0) {
2041 : mbedtls_printf(" AES-CFB128-%3u (%s): ", keybits,
2042 : (mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
2043 : }
2044 :
2045 : memcpy(iv, aes_test_cfb128_iv, 16);
2046 : memcpy(key, aes_test_cfb128_key[u], keybits / 8);
2047 :
2048 : offset = 0;
2049 : ret = mbedtls_aes_setkey_enc(&ctx, key, keybits);
2050 : /*
2051 : * AES-192 is an optional feature that may be unavailable when
2052 : * there is an alternative underlying implementation i.e. when
2053 : * MBEDTLS_AES_ALT is defined.
2054 : */
2055 : if (ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192) {
2056 : mbedtls_printf("skipped\n");
2057 : continue;
2058 : } else if (ret != 0) {
2059 : goto exit;
2060 : }
2061 :
2062 : if (mode == MBEDTLS_AES_DECRYPT) {
2063 : memcpy(buf, aes_test_cfb128_ct[u], 64);
2064 : aes_tests = aes_test_cfb128_pt;
2065 : } else {
2066 : memcpy(buf, aes_test_cfb128_pt, 64);
2067 : aes_tests = aes_test_cfb128_ct[u];
2068 : }
2069 :
2070 : ret = mbedtls_aes_crypt_cfb128(&ctx, mode, 64, &offset, iv, buf, buf);
2071 : if (ret != 0) {
2072 : goto exit;
2073 : }
2074 :
2075 : if (memcmp(buf, aes_tests, 64) != 0) {
2076 : ret = 1;
2077 : goto exit;
2078 : }
2079 :
2080 : if (verbose != 0) {
2081 : mbedtls_printf("passed\n");
2082 : }
2083 : }
2084 :
2085 : if (verbose != 0) {
2086 : mbedtls_printf("\n");
2087 : }
2088 : }
2089 : #endif /* MBEDTLS_CIPHER_MODE_CFB */
2090 :
2091 : #if defined(MBEDTLS_CIPHER_MODE_OFB)
2092 : /*
2093 : * OFB mode
2094 : */
2095 : {
2096 : static const int num_tests =
2097 : sizeof(aes_test_ofb_key) / sizeof(*aes_test_ofb_key);
2098 :
2099 : for (i = 0; i < num_tests << 1; i++) {
2100 : u = i >> 1;
2101 : keybits = 128 + u * 64;
2102 : mode = i & 1;
2103 :
2104 : if (verbose != 0) {
2105 : mbedtls_printf(" AES-OFB-%3u (%s): ", keybits,
2106 : (mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
2107 : }
2108 :
2109 : memcpy(iv, aes_test_ofb_iv, 16);
2110 : memcpy(key, aes_test_ofb_key[u], keybits / 8);
2111 :
2112 : offset = 0;
2113 : ret = mbedtls_aes_setkey_enc(&ctx, key, keybits);
2114 : /*
2115 : * AES-192 is an optional feature that may be unavailable when
2116 : * there is an alternative underlying implementation i.e. when
2117 : * MBEDTLS_AES_ALT is defined.
2118 : */
2119 : if (ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192) {
2120 : mbedtls_printf("skipped\n");
2121 : continue;
2122 : } else if (ret != 0) {
2123 : goto exit;
2124 : }
2125 :
2126 : if (mode == MBEDTLS_AES_DECRYPT) {
2127 : memcpy(buf, aes_test_ofb_ct[u], 64);
2128 : aes_tests = aes_test_ofb_pt;
2129 : } else {
2130 : memcpy(buf, aes_test_ofb_pt, 64);
2131 : aes_tests = aes_test_ofb_ct[u];
2132 : }
2133 :
2134 : ret = mbedtls_aes_crypt_ofb(&ctx, 64, &offset, iv, buf, buf);
2135 : if (ret != 0) {
2136 : goto exit;
2137 : }
2138 :
2139 : if (memcmp(buf, aes_tests, 64) != 0) {
2140 : ret = 1;
2141 : goto exit;
2142 : }
2143 :
2144 : if (verbose != 0) {
2145 : mbedtls_printf("passed\n");
2146 : }
2147 : }
2148 :
2149 : if (verbose != 0) {
2150 : mbedtls_printf("\n");
2151 : }
2152 : }
2153 : #endif /* MBEDTLS_CIPHER_MODE_OFB */
2154 :
2155 : #if defined(MBEDTLS_CIPHER_MODE_CTR)
2156 : /*
2157 : * CTR mode
2158 : */
2159 : {
2160 : static const int num_tests =
2161 : sizeof(aes_test_ctr_key) / sizeof(*aes_test_ctr_key);
2162 :
2163 : for (i = 0; i < num_tests << 1; i++) {
2164 : u = i >> 1;
2165 : mode = i & 1;
2166 :
2167 : if (verbose != 0) {
2168 : mbedtls_printf(" AES-CTR-128 (%s): ",
2169 : (mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
2170 : }
2171 :
2172 : memcpy(nonce_counter, aes_test_ctr_nonce_counter[u], 16);
2173 : memcpy(key, aes_test_ctr_key[u], 16);
2174 :
2175 : offset = 0;
2176 : if ((ret = mbedtls_aes_setkey_enc(&ctx, key, 128)) != 0) {
2177 : goto exit;
2178 : }
2179 :
2180 : len = aes_test_ctr_len[u];
2181 :
2182 : if (mode == MBEDTLS_AES_DECRYPT) {
2183 : memcpy(buf, aes_test_ctr_ct[u], len);
2184 : aes_tests = aes_test_ctr_pt[u];
2185 : } else {
2186 : memcpy(buf, aes_test_ctr_pt[u], len);
2187 : aes_tests = aes_test_ctr_ct[u];
2188 : }
2189 :
2190 : ret = mbedtls_aes_crypt_ctr(&ctx, len, &offset, nonce_counter,
2191 : stream_block, buf, buf);
2192 : if (ret != 0) {
2193 : goto exit;
2194 : }
2195 :
2196 : if (memcmp(buf, aes_tests, len) != 0) {
2197 : ret = 1;
2198 : goto exit;
2199 : }
2200 :
2201 : if (verbose != 0) {
2202 : mbedtls_printf("passed\n");
2203 : }
2204 : }
2205 : }
2206 :
2207 : if (verbose != 0) {
2208 : mbedtls_printf("\n");
2209 : }
2210 : #endif /* MBEDTLS_CIPHER_MODE_CTR */
2211 :
2212 : #if defined(MBEDTLS_CIPHER_MODE_XTS)
2213 : /*
2214 : * XTS mode
2215 : */
2216 : {
2217 : static const int num_tests =
2218 : sizeof(aes_test_xts_key) / sizeof(*aes_test_xts_key);
2219 : mbedtls_aes_xts_context ctx_xts;
2220 :
2221 : mbedtls_aes_xts_init(&ctx_xts);
2222 :
2223 : for (i = 0; i < num_tests << 1; i++) {
2224 : const unsigned char *data_unit;
2225 : u = i >> 1;
2226 : mode = i & 1;
2227 :
2228 : if (verbose != 0) {
2229 : mbedtls_printf(" AES-XTS-128 (%s): ",
2230 : (mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
2231 : }
2232 :
2233 : memset(key, 0, sizeof(key));
2234 : memcpy(key, aes_test_xts_key[u], 32);
2235 : data_unit = aes_test_xts_data_unit[u];
2236 :
2237 : len = sizeof(*aes_test_xts_ct32);
2238 :
2239 : if (mode == MBEDTLS_AES_DECRYPT) {
2240 : ret = mbedtls_aes_xts_setkey_dec(&ctx_xts, key, 256);
2241 : if (ret != 0) {
2242 : goto exit;
2243 : }
2244 : memcpy(buf, aes_test_xts_ct32[u], len);
2245 : aes_tests = aes_test_xts_pt32[u];
2246 : } else {
2247 : ret = mbedtls_aes_xts_setkey_enc(&ctx_xts, key, 256);
2248 : if (ret != 0) {
2249 : goto exit;
2250 : }
2251 : memcpy(buf, aes_test_xts_pt32[u], len);
2252 : aes_tests = aes_test_xts_ct32[u];
2253 : }
2254 :
2255 :
2256 : ret = mbedtls_aes_crypt_xts(&ctx_xts, mode, len, data_unit,
2257 : buf, buf);
2258 : if (ret != 0) {
2259 : goto exit;
2260 : }
2261 :
2262 : if (memcmp(buf, aes_tests, len) != 0) {
2263 : ret = 1;
2264 : goto exit;
2265 : }
2266 :
2267 : if (verbose != 0) {
2268 : mbedtls_printf("passed\n");
2269 : }
2270 : }
2271 :
2272 : if (verbose != 0) {
2273 : mbedtls_printf("\n");
2274 : }
2275 :
2276 : mbedtls_aes_xts_free(&ctx_xts);
2277 : }
2278 : #endif /* MBEDTLS_CIPHER_MODE_XTS */
2279 :
2280 0 : ret = 0;
2281 :
2282 0 : exit:
2283 0 : if (ret != 0 && verbose != 0) {
2284 0 : mbedtls_printf("failed\n");
2285 : }
2286 :
2287 0 : mbedtls_aes_free(&ctx);
2288 :
2289 0 : return ret;
2290 : }
2291 :
2292 : #endif /* MBEDTLS_SELF_TEST */
2293 :
2294 : #endif /* MBEDTLS_AES_C */
|
