1 /**************************************************************************/
2 /*                                                                        */
3 /*       Copyright (c) Microsoft Corporation. All rights reserved.        */
4 /*                                                                        */
5 /*       This software is licensed under the Microsoft Software License   */
6 /*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
7 /*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
8 /*       and in the root directory of this software.                      */
9 /*                                                                        */
10 /**************************************************************************/
11 
12 
13 /**************************************************************************/
14 /**************************************************************************/
15 /**                                                                       */
16 /** NetX Secure Component                                                 */
17 /**                                                                       */
18 /**    Transport Layer Security (TLS)                                     */
19 /**                                                                       */
20 /**************************************************************************/
21 /**************************************************************************/
22 
23 #define NX_SECURE_SOURCE_CODE
24 
25 
26 /* Include necessary system files.  */
27 
28 #include "nx_secure_crypto_table_self_test.h"
29 
30 #ifdef NX_SECURE_POWER_ON_SELF_TEST_MODULE_INTEGRITY_CHECK
31 
32 /* 7c9c67323a1df1adbfe5ceb415eaef0155ece2820f4d50c1ec22cba4928ac656c83fe585db6a78ce40bc42757aba7e5a3f582428d6ca68d0c3978336a6efb729613e8d9979016204bfd921322fdd5222183554447de5e6e9bbe6edf76d7b71e18dc2e8d6dc89b7398364f652fafc734329aafa3dcd45d4f31e388e4fafd7fc6495f37ca5cbab7f54d586463da4bfeaa3bae09f7b8e9239d832b4f0a733aa609cc1f8d4 */
33 static UCHAR plain_1[] = {
34 0x7c, 0x9c, 0x67, 0x32, 0x3a, 0x1d, 0xf1, 0xad, 0xbf, 0xe5, 0xce, 0xb4, 0x15, 0xea, 0xef, 0x01,
35 0x55, 0xec, 0xe2, 0x82, 0x0f, 0x4d, 0x50, 0xc1, 0xec, 0x22, 0xcb, 0xa4, 0x92, 0x8a, 0xc6, 0x56,
36 0xc8, 0x3f, 0xe5, 0x85, 0xdb, 0x6a, 0x78, 0xce, 0x40, 0xbc, 0x42, 0x75, 0x7a, 0xba, 0x7e, 0x5a,
37 0x3f, 0x58, 0x24, 0x28, 0xd6, 0xca, 0x68, 0xd0, 0xc3, 0x97, 0x83, 0x36, 0xa6, 0xef, 0xb7, 0x29,
38 0x61, 0x3e, 0x8d, 0x99, 0x79, 0x01, 0x62, 0x04, 0xbf, 0xd9, 0x21, 0x32, 0x2f, 0xdd, 0x52, 0x22,
39 0x18, 0x35, 0x54, 0x44, 0x7d, 0xe5, 0xe6, 0xe9, 0xbb, 0xe6, 0xed, 0xf7, 0x6d, 0x7b, 0x71, 0xe1,
40 0x8d, 0xc2, 0xe8, 0xd6, 0xdc, 0x89, 0xb7, 0x39, 0x83, 0x64, 0xf6, 0x52, 0xfa, 0xfc, 0x73, 0x43,
41 0x29, 0xaa, 0xfa, 0x3d, 0xcd, 0x45, 0xd4, 0xf3, 0x1e, 0x38, 0x8e, 0x4f, 0xaf, 0xd7, 0xfc, 0x64,
42 0x95, 0xf3, 0x7c, 0xa5, 0xcb, 0xab, 0x7f, 0x54, 0xd5, 0x86, 0x46, 0x3d, 0xa4, 0xbf, 0xea, 0xa3,
43 0xba, 0xe0, 0x9f, 0x7b, 0x8e, 0x92, 0x39, 0xd8, 0x32, 0xb4, 0xf0, 0xa7, 0x33, 0xaa, 0x60, 0x9c,
44 0xc1, 0xf8, 0xd4,
45 };
46 
47 /* d8fd6a91ef3b6ced05b98358a99107c1fac8c807 */
48 static UCHAR secret_1[] = {
49 0xd8, 0xfd, 0x6a, 0x91, 0xef, 0x3b, 0x6c, 0xed, 0x05, 0xb9, 0x83, 0x58, 0xa9, 0x91, 0x07, 0xc1,
50 0xfa, 0xc8, 0xc8, 0x07,
51 };
52 
53 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
54 static UCHAR plain_256[] = {
55 0xF9, 0x0D, 0x11, 0x6B, 0x1C, 0xE4, 0x25, 0x43, 0x8C, 0xE0, 0x9A, 0x7F, 0x03, 0xE0, 0x72, 0x03,
56 0xBF, 0xEC, 0x2A, 0x4A, 0x8F, 0xD1, 0x3D, 0x6E, 0x64, 0x9A, 0xDA, 0x05, 0x40, 0x3F, 0xAF, 0x75,
57 0x41, 0x14, 0x22, 0x7A, 0x18, 0x25, 0x5F, 0x66, 0x3B, 0x57, 0xDF, 0x0B, 0x6D, 0x2F, 0x00, 0x4E,
58 0x73, 0x7A, 0x93, 0x12, 0x4F, 0xF0, 0xD9, 0x38, 0x78, 0xC9, 0xED, 0x1C, 0xB2, 0xDB, 0x94, 0x17,
59 0x31, 0x1E, 0x0F, 0x48, 0xDC, 0x8A, 0x25, 0x53, 0x2E, 0x95, 0x88, 0x32, 0xF4, 0x89, 0xE8, 0x27,
60 0x33, 0x46, 0x40, 0x7B, 0x9F, 0x12, 0x05, 0x1A, 0xC1, 0x8E, 0xC8, 0x32, 0x3F, 0x1D, 0x76, 0x60,
61 0x63, 0xF0, 0x45, 0x46, 0x9D, 0x68, 0x6A, 0x7D, 0xC8, 0x12, 0x0E, 0x0C, 0x73, 0x0F, 0xBB, 0x79,
62 0xBD, 0x90, 0xFF, 0x4F, 0x82, 0x95, 0xED, 0x18, 0x03, 0xDA, 0x08, 0x12, 0xB6, 0x9E, 0x10, 0x3B,
63 0x9F, 0x79, 0x13, 0x5C, 0x8F, 0xBA, 0xA3, 0x11, 0xBA, 0x7E, 0x83, 0x3E, 0x5E, 0x66, 0x3E, 0x26,
64 0x1E, 0x8C, 0xE1, 0x7F, 0x1E, 0x19, 0x5E, 0x44, 0x9E, 0xA5, 0xED, 0x1B, 0x5F, 0xA0, 0x03, 0x7A,
65 0x37, 0x3E, 0xBD, 0x2A, 0xD9, 0xFC, 0xCC, 0x27, 0xCD, 0xCF, 0x03, 0x48, 0xAA, 0xB8, 0x50, 0x3D,
66 0x29, 0xED, 0xA6, 0x60, 0x45, 0x99, 0xF1, 0x64, 0x5C, 0x94, 0xE5, 0x54, 0x5A, 0x0B, 0xB6, 0x28,
67 0x21, 0x24, 0x17, 0x38, 0x8A, 0x29, 0x6E, 0x07, 0x4E, 0x95, 0x9E, 0x50, 0x54, 0x6A, 0x57, 0x33,
68 0x29, 0x3C, 0x73, 0x21, 0x0F, 0x24, 0x67, 0x03, 0x93, 0x87, 0xCD, 0x13, 0x8C, 0x2C, 0xB9, 0x67,
69 0xAC, 0x8C, 0xD1, 0x00, 0x5C, 0x9A, 0xDB, 0x1F, 0xFF, 0x3B, 0x74, 0x61, 0x6A, 0x1D, 0xD1, 0x50,
70 0xDE, 0x2F, 0xC9, 0x38, 0x03, 0x16, 0x7D, 0x73, 0x20, 0xBC, 0xE1, 0x0B, 0x7D, 0xA9, 0xDC, 0x14,
71 };
72 
73 /* 316A9D20B8596F02FA6DFF4B4BEF48E50EA4096E828424ECE6711D7DE35FEFA1 */
74 static UCHAR secret_256[] = {
75 0x31, 0x6A, 0x9D, 0x20, 0xB8, 0x59, 0x6F, 0x02, 0xFA, 0x6D, 0xFF, 0x4B, 0x4B, 0xEF, 0x48, 0xE5,
76 0x0E, 0xA4, 0x09, 0x6E, 0x82, 0x84, 0x24, 0xEC, 0xE6, 0x71, 0x1D, 0x7D, 0xE3, 0x5F, 0xEF, 0xA1,
77 };
78 
79 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
80 static UCHAR plain_384[] = {
81 0xED, 0xA8, 0xCA, 0x35, 0xAA, 0x93, 0x2D, 0x05, 0x7F, 0x0A, 0x76, 0x29, 0x65, 0xBA, 0x75, 0x44,
82 0xEC, 0x9E, 0xA8, 0x3B, 0x86, 0x62, 0xED, 0x6D, 0x63, 0xBD, 0x7D, 0x29, 0x76, 0x17, 0x53, 0x78,
83 0x2C, 0x47, 0xA3, 0x70, 0xD5, 0x01, 0x15, 0x13, 0x60, 0x39, 0x1F, 0x47, 0x6E, 0x17, 0x6C, 0x7B,
84 0x7D, 0x8E, 0x48, 0x7D, 0xA3, 0x09, 0xBE, 0x66, 0x2E, 0x2D, 0xAE, 0x46, 0x65, 0x43, 0x1A, 0x2A,
85 0x94, 0xA1, 0x29, 0x4F, 0x59, 0xE0, 0x9B, 0x3C, 0xE8, 0x79, 0x60, 0x6F, 0x8E, 0xD9, 0xD1, 0x15,
86 0x8F, 0x35, 0xBE, 0x7B, 0x04, 0xBA, 0xB0, 0x27, 0x67, 0x10, 0xF3, 0x22, 0xAC, 0xC9, 0x95, 0x2D,
87 0x76, 0xCD, 0x10, 0x3E, 0xF4, 0xF9, 0x7C, 0x5B, 0xF4, 0x11, 0x85, 0x6E, 0x55, 0x41, 0x9C, 0x63,
88 0x91, 0x0E, 0x73, 0x75, 0xC5, 0xEA, 0x13, 0x02, 0xBF, 0x48, 0xE6, 0x40, 0x7E, 0xB7, 0x3D, 0x2B,
89 0x6F, 0x7E, 0x41, 0x07, 0x3E, 0x53, 0x5C, 0x6A, 0xE3, 0x71, 0xB3, 0x6F, 0x5B, 0x1D, 0xEA, 0x42,
90 0xC5, 0xB5, 0x49, 0x58, 0x46, 0x2F, 0x31, 0x19, 0xD2, 0x34, 0x3D, 0x3B, 0xF1, 0xFC, 0xEC, 0x48,
91 0x1B, 0x31, 0x46, 0x2C, 0x32, 0x6E, 0x5C, 0x02, 0x5F, 0x14, 0x59, 0x44, 0x99, 0xBF, 0x8E, 0x29,
92 0xD5, 0x77, 0x1A, 0x69, 0x8D, 0x41, 0x07, 0x0B, 0xFE, 0x02, 0xA9, 0x53, 0x6A, 0x19, 0x44, 0x38,
93 0xE6, 0x21, 0xA3, 0x47, 0xE6, 0x7C, 0x09, 0x43, 0xF8, 0xF2, 0x15, 0x4E, 0x75, 0x57, 0x61, 0x43,
94 0xEB, 0x36, 0xBA, 0x6A, 0x60, 0x03, 0x09, 0x71, 0x21, 0x21, 0xF7, 0x70, 0x61, 0x04, 0xCB, 0x28,
95 0x54, 0xFD, 0x85, 0x4C, 0x15, 0x33, 0x7C, 0x5F, 0xB6, 0x45, 0x67, 0x0C, 0xE5, 0x0B, 0xF9, 0x41,
96 0xDA, 0x1D, 0x90, 0x61, 0x75, 0x8E, 0x4D, 0x4D, 0x63, 0xC3, 0x36, 0x6D, 0x4A, 0x9C, 0xD1, 0x68,
97 };
98 
99 /* 08E3D346F6E3C03D8A15D1EB273EC5EE5AD7201C9CE9325B586486C32BBF3FB9DB7DB416D54C68C2AD3E6694E06CFC45 */
100 static UCHAR secret_384[] = {
101 0x08, 0xE3, 0xD3, 0x46, 0xF6, 0xE3, 0xC0, 0x3D, 0x8A, 0x15, 0xD1, 0xEB, 0x27, 0x3E, 0xC5, 0xEE,
102 0x5A, 0xD7, 0x20, 0x1C, 0x9C, 0xE9, 0x32, 0x5B, 0x58, 0x64, 0x86, 0xC3, 0x2B, 0xBF, 0x3F, 0xB9,
103 0xDB, 0x7D, 0xB4, 0x16, 0xD5, 0x4C, 0x68, 0xC2, 0xAD, 0x3E, 0x66, 0x94, 0xE0, 0x6C, 0xFC, 0x45,
104 };
105 
106 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
107 static UCHAR plain_512[] = {
108 0xA4, 0x0C, 0x7F, 0x79, 0xAC, 0x43, 0x60, 0x4D, 0x7A, 0x11, 0xE5, 0x7C, 0x38, 0x59, 0xE8, 0x79,
109 0x76, 0xE7, 0x6E, 0x7A, 0xDF, 0x96, 0xE2, 0x6C, 0x99, 0x83, 0x0D, 0x20, 0xB9, 0xF6, 0x46, 0x09,
110 0x60, 0x6C, 0x94, 0x15, 0xEF, 0xDD, 0x6F, 0x36, 0xEC, 0xDD, 0xB2, 0x02, 0x4C, 0xC4, 0x93, 0x12,
111 0xEE, 0xF3, 0xCF, 0x71, 0x89, 0x35, 0x56, 0x2B, 0x44, 0xC6, 0xA3, 0x0B, 0x47, 0xDA, 0x67, 0x04,
112 0x92, 0xD0, 0x5F, 0x7D, 0x46, 0x6B, 0xA5, 0x17, 0xA8, 0x58, 0xA4, 0x32, 0x8F, 0xA2, 0xC1, 0x0B,
113 0x87, 0x5D, 0x9C, 0x1E, 0x9D, 0x01, 0x41, 0x6D, 0xBB, 0x01, 0x25, 0x7D, 0xB2, 0x44, 0xA9, 0x19,
114 0x84, 0xBF, 0xE5, 0x14, 0x93, 0xD5, 0xE7, 0x32, 0x22, 0x0F, 0x3D, 0x50, 0xF4, 0x7E, 0xEE, 0x62,
115 0xCC, 0x07, 0x9F, 0x4D, 0x8E, 0xF0, 0x51, 0x33, 0x1A, 0x57, 0xC3, 0x16, 0x71, 0x14, 0x1E, 0x47,
116 0x3B, 0x34, 0xB2, 0x00, 0x94, 0x68, 0xA8, 0x13, 0xA9, 0x6D, 0x06, 0x41, 0xB1, 0x1B, 0x21, 0x7B,
117 0x74, 0xFF, 0x8A, 0x00, 0x42, 0xF1, 0x13, 0x61, 0x6A, 0x12, 0x68, 0x04, 0xD4, 0x6B, 0x1F, 0x16,
118 0x31, 0xCF, 0x83, 0x17, 0x56, 0xF0, 0x1A, 0x07, 0x20, 0x30, 0xB3, 0x28, 0x1F, 0xC3, 0x53, 0x09,
119 0xE0, 0x25, 0x71, 0x32, 0x64, 0xF6, 0x56, 0x34, 0x67, 0x9D, 0xBB, 0x0D, 0x72, 0xF6, 0xD0, 0x2F,
120 0xAA, 0x61, 0xFC, 0x4B, 0x0F, 0xF6, 0x5F, 0x40, 0x01, 0x99, 0x92, 0x3B, 0x32, 0xBF, 0x98, 0x6A,
121 0xAC, 0xF7, 0xA0, 0x2D, 0xBD, 0x9A, 0xB7, 0x38, 0xE4, 0x03, 0x42, 0x04, 0x30, 0xB7, 0x86, 0x42,
122 0x50, 0x70, 0x9F, 0x6B, 0x06, 0x13, 0x7F, 0x54, 0x25, 0x36, 0x75, 0x25, 0x1D, 0x78, 0x3E, 0x39,
123 0x95, 0x03, 0xD1, 0x07, 0x3F, 0x8D, 0x38, 0x3C, 0x8E, 0x8C, 0x5C, 0x00, 0xD0, 0x37, 0x83, 0x08,
124 };
125 
126 /* 4A5C6FC817649A45AF89D4FA2D66B7A8EC28CCC44C3946C25B2A21CC7B9FB36EA4E3887199BBDAC58238AB823E4C03491703023C04B110438A3E069F33F2C79C */
127 static UCHAR secret_512[] = {
128 0x4A, 0x5C, 0x6F, 0xC8, 0x17, 0x64, 0x9A, 0x45, 0xAF, 0x89, 0xD4, 0xFA, 0x2D, 0x66, 0xB7, 0xA8,
129 0xEC, 0x28, 0xCC, 0xC4, 0x4C, 0x39, 0x46, 0xC2, 0x5B, 0x2A, 0x21, 0xCC, 0x7B, 0x9F, 0xB3, 0x6E,
130 0xA4, 0xE3, 0x88, 0x71, 0x99, 0xBB, 0xDA, 0xC5, 0x82, 0x38, 0xAB, 0x82, 0x3E, 0x4C, 0x03, 0x49,
131 0x17, 0x03, 0x02, 0x3C, 0x04, 0xB1, 0x10, 0x43, 0x8A, 0x3E, 0x06, 0x9F, 0x33, 0xF2, 0xC7, 0x9C,
132 };
133 
134 /* Output. */
135 static ULONG output[16];
136 
137 /**************************************************************************/
138 /*                                                                        */
139 /*  FUNCTION                                               RELEASE        */
140 /*                                                                        */
141 /*    nx_secure_crypto_method_self_test_sha               PORTABLE C      */
142 /*                                                           6.1          */
143 /*  AUTHOR                                                                */
144 /*                                                                        */
145 /*    Timothy Stapko, Microsoft Corporation                               */
146 /*                                                                        */
147 /*  DESCRIPTION                                                           */
148 /*                                                                        */
149 /*    This function performs the Known Answer Test for SHA crypto method. */
150 /*                                                                        */
151 /*  INPUT                                                                 */
152 /*                                                                        */
153 /*    method_ptr                            Pointer to the crypto method  */
154 /*                                            to be tested.               */
155 /*                                                                        */
156 /*  OUTPUT                                                                */
157 /*                                                                        */
158 /*    status                                Completion status             */
159 /*                                                                        */
160 /*  CALLS                                                                 */
161 /*                                                                        */
162 /*    None                                                                */
163 /*                                                                        */
164 /*  CALLED BY                                                             */
165 /*                                                                        */
166 /*    Application Code                                                    */
167 /*                                                                        */
168 /*  RELEASE HISTORY                                                       */
169 /*                                                                        */
170 /*    DATE              NAME                      DESCRIPTION             */
171 /*                                                                        */
172 /*  05-19-2020     Timothy Stapko           Initial Version 6.0           */
173 /*  09-30-2020     Timothy Stapko           Modified comment(s),          */
174 /*                                            resulting in version 6.1    */
175 /*                                                                        */
176 /**************************************************************************/
_nx_secure_crypto_method_self_test_sha(NX_CRYPTO_METHOD * crypto_method_sha,VOID * metadata,UINT metadata_size)177 UINT _nx_secure_crypto_method_self_test_sha(NX_CRYPTO_METHOD *crypto_method_sha,
178                                             VOID *metadata, UINT metadata_size)
179 {
180 UCHAR  *input;
181 UCHAR  *secret;
182 UINT    input_length;
183 UINT    output_length;
184 UINT    status;
185 VOID   *handler = NX_NULL;
186 
187 
188     /* Validate the crypto method */
189     if(crypto_method_sha == NX_NULL)
190         return(NX_PTR_ERROR);
191 
192     /* Set the test data.  */
193     switch (crypto_method_sha -> nx_crypto_algorithm)
194     {
195     case NX_CRYPTO_HASH_SHA1:
196         input = plain_1;
197         secret = secret_1;
198         input_length = sizeof(plain_1);
199         output_length = sizeof(secret_1);
200         break;
201     case NX_CRYPTO_HASH_SHA256:
202         input = plain_256;
203         secret = secret_256;
204         input_length = sizeof(plain_256);
205         output_length = sizeof(secret_256);
206         break;
207     case NX_CRYPTO_HASH_SHA384:
208         input = plain_384;
209         secret = secret_384;
210         input_length = sizeof(plain_384);
211         output_length = sizeof(secret_384);
212         break;
213     case NX_CRYPTO_HASH_SHA512:
214         input = plain_512;
215         secret = secret_512;
216         input_length = sizeof(plain_512);
217         output_length = sizeof(secret_512);
218         break;
219     default:
220         return(1);
221     }
222 
223     if (crypto_method_sha -> nx_crypto_init)
224     {
225         status = crypto_method_sha -> nx_crypto_init(crypto_method_sha,
226                                                      NX_NULL,
227                                                      0,
228                                                      &handler,
229                                                      metadata,
230                                                      metadata_size);
231 
232         if (status != NX_CRYPTO_SUCCESS)
233         {
234             return(status);
235         }
236     }
237 
238     if (crypto_method_sha -> nx_crypto_operation == NX_NULL)
239     {
240         return(NX_PTR_ERROR);
241     }
242 
243     /* Clear the output buffer.  */
244     NX_SECURE_MEMSET(output, 0, sizeof(output));
245 
246     /* Call the crypto operation function.  */
247     status = crypto_method_sha -> nx_crypto_operation(NX_CRYPTO_AUTHENTICATE,
248                                                       handler,
249                                                       crypto_method_sha,
250                                                       NX_NULL,
251                                                       0,
252                                                       input,
253                                                       input_length,
254                                                       NX_NULL,
255                                                       (UCHAR *)output,
256                                                       output_length,
257                                                       metadata,
258                                                       metadata_size,
259                                                       NX_NULL, NX_NULL);
260 
261     /* Check the status.  */
262     if(status != NX_CRYPTO_SUCCESS)
263     {
264         return(status);
265     }
266 
267     /* Validate the output.  */
268     if(NX_SECURE_MEMCMP(output, secret, output_length) != 0)
269     {
270         return(NX_NOT_SUCCESSFUL);
271     }
272 
273     if (crypto_method_sha -> nx_crypto_cleanup)
274     {
275         status = crypto_method_sha -> nx_crypto_cleanup(metadata);
276     }
277 
278     return(status);
279 }
280 #endif
281