| 1 | /*
|
|---|
| 2 | * Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.
|
|---|
| 3 | *
|
|---|
| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
|
|---|
| 5 | * this file except in compliance with the License. You can obtain a copy
|
|---|
| 6 | * in the file LICENSE in the source distribution or at
|
|---|
| 7 | * https://www.openssl.org/source/license.html
|
|---|
| 8 | */
|
|---|
| 9 |
|
|---|
| 10 | #include <openssl/evp.h>
|
|---|
| 11 | #include <openssl/rand.h>
|
|---|
| 12 | #include <openssl/core_names.h>
|
|---|
| 13 | #include "testutil.h"
|
|---|
| 14 | #include "internal/nelem.h"
|
|---|
| 15 |
|
|---|
| 16 | static const unsigned char shake256_input[] = {
|
|---|
| 17 | 0x8d, 0x80, 0x01, 0xe2, 0xc0, 0x96, 0xf1, 0xb8,
|
|---|
| 18 | 0x8e, 0x7c, 0x92, 0x24, 0xa0, 0x86, 0xef, 0xd4,
|
|---|
| 19 | 0x79, 0x7f, 0xbf, 0x74, 0xa8, 0x03, 0x3a, 0x2d,
|
|---|
| 20 | 0x42, 0x2a, 0x2b, 0x6b, 0x8f, 0x67, 0x47, 0xe4
|
|---|
| 21 | };
|
|---|
| 22 |
|
|---|
| 23 | /*
|
|---|
| 24 | * This KAT output is 250 bytes, which is more than
|
|---|
| 25 | * the SHAKE256 block size (136 bytes).
|
|---|
| 26 | */
|
|---|
| 27 | static const unsigned char shake256_output[] = {
|
|---|
| 28 | 0x2e, 0x97, 0x5f, 0x6a, 0x8a, 0x14, 0xf0, 0x70,
|
|---|
| 29 | 0x4d, 0x51, 0xb1, 0x36, 0x67, 0xd8, 0x19, 0x5c,
|
|---|
| 30 | 0x21, 0x9f, 0x71, 0xe6, 0x34, 0x56, 0x96, 0xc4,
|
|---|
| 31 | 0x9f, 0xa4, 0xb9, 0xd0, 0x8e, 0x92, 0x25, 0xd3,
|
|---|
| 32 | 0xd3, 0x93, 0x93, 0x42, 0x51, 0x52, 0xc9, 0x7e,
|
|---|
| 33 | 0x71, 0xdd, 0x24, 0x60, 0x1c, 0x11, 0xab, 0xcf,
|
|---|
| 34 | 0xa0, 0xf1, 0x2f, 0x53, 0xc6, 0x80, 0xbd, 0x3a,
|
|---|
| 35 | 0xe7, 0x57, 0xb8, 0x13, 0x4a, 0x9c, 0x10, 0xd4,
|
|---|
| 36 | 0x29, 0x61, 0x58, 0x69, 0x21, 0x7f, 0xdd, 0x58,
|
|---|
| 37 | 0x85, 0xc4, 0xdb, 0x17, 0x49, 0x85, 0x70, 0x3a,
|
|---|
| 38 | 0x6d, 0x6d, 0xe9, 0x4a, 0x66, 0x7e, 0xac, 0x30,
|
|---|
| 39 | 0x23, 0x44, 0x3a, 0x83, 0x37, 0xae, 0x1b, 0xc6,
|
|---|
| 40 | 0x01, 0xb7, 0x6d, 0x7d, 0x38, 0xec, 0x3c, 0x34,
|
|---|
| 41 | 0x46, 0x31, 0x05, 0xf0, 0xd3, 0x94, 0x9d, 0x78,
|
|---|
| 42 | 0xe5, 0x62, 0xa0, 0x39, 0xe4, 0x46, 0x95, 0x48,
|
|---|
| 43 | 0xb6, 0x09, 0x39, 0x5d, 0xe5, 0xa4, 0xfd, 0x43,
|
|---|
| 44 | 0xc4, 0x6c, 0xa9, 0xfd, 0x6e, 0xe2, 0x9a, 0xda,
|
|---|
| 45 | 0x5e, 0xfc, 0x07, 0xd8, 0x4d, 0x55, 0x32, 0x49,
|
|---|
| 46 | 0x45, 0x0d, 0xab, 0x4a, 0x49, 0xc4, 0x83, 0xde,
|
|---|
| 47 | 0xd2, 0x50, 0xc9, 0x33, 0x8f, 0x85, 0xcd, 0x93,
|
|---|
| 48 | 0x7a, 0xe6, 0x6b, 0xb4, 0x36, 0xf3, 0xb4, 0x02,
|
|---|
| 49 | 0x6e, 0x85, 0x9f, 0xda, 0x1c, 0xa5, 0x71, 0x43,
|
|---|
| 50 | 0x2f, 0x3b, 0xfc, 0x09, 0xe7, 0xc0, 0x3c, 0xa4,
|
|---|
| 51 | 0xd1, 0x83, 0xb7, 0x41, 0x11, 0x1c, 0xa0, 0x48,
|
|---|
| 52 | 0x3d, 0x0e, 0xda, 0xbc, 0x03, 0xfe, 0xb2, 0x3b,
|
|---|
| 53 | 0x17, 0xee, 0x48, 0xe8, 0x44, 0xba, 0x24, 0x08,
|
|---|
| 54 | 0xd9, 0xdc, 0xfd, 0x01, 0x39, 0xd2, 0xe8, 0xc7,
|
|---|
| 55 | 0x31, 0x01, 0x25, 0xae, 0xe8, 0x01, 0xc6, 0x1a,
|
|---|
| 56 | 0xb7, 0x90, 0x0d, 0x1e, 0xfc, 0x47, 0xc0, 0x78,
|
|---|
| 57 | 0x28, 0x17, 0x66, 0xf3, 0x61, 0xc5, 0xe6, 0x11,
|
|---|
| 58 | 0x13, 0x46, 0x23, 0x5e, 0x1d, 0xc3, 0x83, 0x25,
|
|---|
| 59 | 0x66, 0x6c
|
|---|
| 60 | };
|
|---|
| 61 |
|
|---|
| 62 | static const unsigned char shake256_largemsg_input[] = {
|
|---|
| 63 | 0xb2, 0xd2, 0x38, 0x65, 0xaf, 0x8f, 0x25, 0x6e,
|
|---|
| 64 | 0x64, 0x40, 0xe2, 0x0d, 0x49, 0x8e, 0x3e, 0x64,
|
|---|
| 65 | 0x46, 0xd2, 0x03, 0xa4, 0x19, 0xe3, 0x7b, 0x80,
|
|---|
| 66 | 0xf7, 0x2b, 0x32, 0xe2, 0x76, 0x01, 0xfe, 0xdd,
|
|---|
| 67 | 0xaa, 0x33, 0x3d, 0xe4, 0x8e, 0xe1, 0x5e, 0x39,
|
|---|
| 68 | 0xa6, 0x92, 0xa3, 0xa7, 0xe3, 0x81, 0x24, 0x74,
|
|---|
| 69 | 0xc7, 0x38, 0x18, 0x92, 0xc9, 0x60, 0x50, 0x15,
|
|---|
| 70 | 0xfb, 0xd8, 0x04, 0xea, 0xea, 0x04, 0xd2, 0xc5,
|
|---|
| 71 | 0xc6, 0x68, 0x04, 0x5b, 0xc3, 0x75, 0x12, 0xd2,
|
|---|
| 72 | 0xbe, 0xa2, 0x67, 0x75, 0x24, 0xbf, 0x68, 0xad,
|
|---|
| 73 | 0x10, 0x86, 0xb3, 0x2c, 0xb3, 0x74, 0xa4, 0x6c,
|
|---|
| 74 | 0xf9, 0xd7, 0x1e, 0x58, 0x69, 0x27, 0x88, 0x49,
|
|---|
| 75 | 0x4e, 0x99, 0x15, 0x33, 0x14, 0xf2, 0x49, 0x21,
|
|---|
| 76 | 0xf4, 0x99, 0xb9, 0xde, 0xd4, 0xf1, 0x12, 0xf5,
|
|---|
| 77 | 0x68, 0xe5, 0x5c, 0xdc, 0x9e, 0xc5, 0x80, 0x6d,
|
|---|
| 78 | 0x39, 0x50, 0x08, 0x95, 0xbb, 0x12, 0x27, 0x50,
|
|---|
| 79 | 0x89, 0xf0, 0xf9, 0xd5, 0x4a, 0x01, 0x0b, 0x0d,
|
|---|
| 80 | 0x90, 0x9f, 0x1e, 0x4a, 0xba, 0xbe, 0x28, 0x36,
|
|---|
| 81 | 0x19, 0x7d, 0x9c, 0x0a, 0x51, 0xfb, 0xeb, 0x00,
|
|---|
| 82 | 0x02, 0x6c, 0x4b, 0x0a, 0xa8, 0x6c, 0xb7, 0xc4,
|
|---|
| 83 | 0xc0, 0x92, 0x37, 0xa7, 0x2d, 0x49, 0x61, 0x80,
|
|---|
| 84 | 0xd9, 0xdb, 0x20, 0x21, 0x9f, 0xcf, 0xb4, 0x57,
|
|---|
| 85 | 0x69, 0x75, 0xfa, 0x1c, 0x95, 0xbf, 0xee, 0x0d,
|
|---|
| 86 | 0x9e, 0x52, 0x6e, 0x1e, 0xf8, 0xdd, 0x41, 0x8c,
|
|---|
| 87 | 0x3b, 0xaa, 0x57, 0x13, 0x84, 0x73, 0x52, 0x62,
|
|---|
| 88 | 0x18, 0x76, 0x46, 0xcc, 0x4b, 0xcb, 0xbd, 0x40,
|
|---|
| 89 | 0xa1, 0xf6, 0xff, 0x7b, 0x32, 0xb9, 0x90, 0x7c,
|
|---|
| 90 | 0x53, 0x2c, 0xf9, 0x38, 0x72, 0x0f, 0xcb, 0x90,
|
|---|
| 91 | 0x42, 0x5e, 0xe2, 0x80, 0x19, 0x26, 0xe7, 0x99,
|
|---|
| 92 | 0x96, 0x98, 0x18, 0xb1, 0x86, 0x5b, 0x4c, 0xd9,
|
|---|
| 93 | 0x08, 0x27, 0x31, 0x8f, 0xf0, 0x90, 0xd9, 0x35,
|
|---|
| 94 | 0x6a, 0x1f, 0x75, 0xc2, 0xe0, 0xa7, 0x60, 0xb8,
|
|---|
| 95 | 0x1d, 0xd6, 0x5f, 0x56, 0xb2, 0x0b, 0x27, 0x0e,
|
|---|
| 96 | 0x98, 0x67, 0x1f, 0x39, 0x18, 0x27, 0x68, 0x0a,
|
|---|
| 97 | 0xe8, 0x31, 0x1b, 0xc0, 0x97, 0xec, 0xd1, 0x20,
|
|---|
| 98 | 0x2a, 0x55, 0x69, 0x23, 0x08, 0x50, 0x05, 0xec,
|
|---|
| 99 | 0x13, 0x3b, 0x56, 0xfc, 0x18, 0xc9, 0x1a, 0xa9,
|
|---|
| 100 | 0x69, 0x0e, 0xe2, 0xcc, 0xc8, 0xd6, 0x19, 0xbb,
|
|---|
| 101 | 0x87, 0x3b, 0x42, 0x77, 0xee, 0x77, 0x81, 0x26,
|
|---|
| 102 | 0xdd, 0xf6, 0x5d, 0xc3, 0xb2, 0xb0, 0xc4, 0x14,
|
|---|
| 103 | 0x6d, 0xb5, 0x4f, 0xdc, 0x13, 0x09, 0xc8, 0x53,
|
|---|
| 104 | 0x50, 0xb3, 0xea, 0xd3, 0x5f, 0x11, 0x67, 0xd4,
|
|---|
| 105 | 0x2f, 0x6e, 0x30, 0x1a, 0xbe, 0xd6, 0xf0, 0x2d,
|
|---|
| 106 | 0xc9, 0x29, 0xd9, 0x0a, 0xa8, 0x6f, 0xa4, 0x18,
|
|---|
| 107 | 0x74, 0x6b, 0xd3, 0x5d, 0x6a, 0x73, 0x3a, 0xf2,
|
|---|
| 108 | 0x94, 0x7f, 0xbd, 0xb4, 0xa6, 0x7f, 0x5b, 0x3d,
|
|---|
| 109 | 0x26, 0xf2, 0x6c, 0x13, 0xcf, 0xb4, 0x26, 0x1e,
|
|---|
| 110 | 0x38, 0x17, 0x66, 0x60, 0xb1, 0x36, 0xae, 0xe0,
|
|---|
| 111 | 0x6d, 0x86, 0x69, 0xe7, 0xe7, 0xae, 0x77, 0x6f,
|
|---|
| 112 | 0x7e, 0x99, 0xe5, 0xd9, 0x62, 0xc9, 0xfc, 0xde,
|
|---|
| 113 | 0xb4, 0xee, 0x7e, 0xc8, 0xe9, 0xb7, 0x2c, 0xe2,
|
|---|
| 114 | 0x70, 0xe8, 0x8b, 0x2d, 0x94, 0xad, 0xe8, 0x54,
|
|---|
| 115 | 0xa3, 0x2d, 0x9a, 0xe2, 0x50, 0x63, 0x87, 0xb3,
|
|---|
| 116 | 0x56, 0x29, 0xea, 0xa8, 0x5e, 0x96, 0x53, 0x9f,
|
|---|
| 117 | 0x23, 0x8a, 0xef, 0xa3, 0xd4, 0x87, 0x09, 0x5f,
|
|---|
| 118 | 0xba, 0xc3, 0xd1, 0xd9, 0x1a, 0x7b, 0x5c, 0x5d,
|
|---|
| 119 | 0x5d, 0x89, 0xed, 0xb6, 0x6e, 0x39, 0x73, 0xa5,
|
|---|
| 120 | 0x64, 0x59, 0x52, 0x8b, 0x61, 0x8f, 0x66, 0x69,
|
|---|
| 121 | 0xb9, 0xf0, 0x45, 0x0a, 0x57, 0xcd, 0xc5, 0x7f,
|
|---|
| 122 | 0x5d, 0xd0, 0xbf, 0xcc, 0x0b, 0x48, 0x12, 0xe1,
|
|---|
| 123 | 0xe2, 0xc2, 0xea, 0xcc, 0x09, 0xd9, 0x42, 0x2c,
|
|---|
| 124 | 0xef, 0x4f, 0xa7, 0xe9, 0x32, 0x5c, 0x3f, 0x22,
|
|---|
| 125 | 0xc0, 0x45, 0x0b, 0x67, 0x3c, 0x31, 0x69, 0x29,
|
|---|
| 126 | 0xa3, 0x39, 0xdd, 0x6e, 0x2f, 0xbe, 0x10, 0xc9,
|
|---|
| 127 | 0x7b, 0xff, 0x19, 0x8a, 0xe9, 0xea, 0xfc, 0x32,
|
|---|
| 128 | 0x41, 0x33, 0x70, 0x2a, 0x9a, 0xa4, 0xe6, 0xb4,
|
|---|
| 129 | 0x7e, 0xb4, 0xc6, 0x21, 0x49, 0x5a, 0xfc, 0x45,
|
|---|
| 130 | 0xd2, 0x23, 0xb3, 0x28, 0x4d, 0x83, 0x60, 0xfe,
|
|---|
| 131 | 0x70, 0x68, 0x03, 0x59, 0xd5, 0x15, 0xaa, 0x9e,
|
|---|
| 132 | 0xa0, 0x2e, 0x36, 0xb5, 0x61, 0x0f, 0x61, 0x05,
|
|---|
| 133 | 0x3c, 0x62, 0x00, 0xa0, 0x47, 0xf1, 0x86, 0xba,
|
|---|
| 134 | 0x33, 0xb8, 0xca, 0x60, 0x2f, 0x3f, 0x0a, 0x67,
|
|---|
| 135 | 0x09, 0x27, 0x2f, 0xa2, 0x96, 0x02, 0x52, 0x58,
|
|---|
| 136 | 0x55, 0x68, 0x80, 0xf4, 0x4f, 0x47, 0xba, 0xff,
|
|---|
| 137 | 0x41, 0x7a, 0x40, 0x4c, 0xfd, 0x9d, 0x10, 0x72,
|
|---|
| 138 | 0x0e, 0x20, 0xa9, 0x7f, 0x9b, 0x9b, 0x14, 0xeb,
|
|---|
| 139 | 0x8e, 0x61, 0x25, 0xcb, 0xf4, 0x58, 0xff, 0x47,
|
|---|
| 140 | 0xa7, 0x08, 0xd6, 0x4e, 0x2b, 0xf1, 0xf9, 0x89,
|
|---|
| 141 | 0xd7, 0x22, 0x0f, 0x8d, 0x35, 0x07, 0xa0, 0x54,
|
|---|
| 142 | 0xab, 0x83, 0xd8, 0xee, 0x5a, 0x3e, 0x88, 0x74,
|
|---|
| 143 | 0x46, 0x41, 0x6e, 0x3e, 0xb7, 0xc0, 0xb6, 0x55,
|
|---|
| 144 | 0xe0, 0x36, 0xc0, 0x2b, 0xbf, 0xb8, 0x24, 0x8a,
|
|---|
| 145 | 0x44, 0x82, 0xf4, 0xcb, 0xb5, 0xd7, 0x41, 0x48,
|
|---|
| 146 | 0x51, 0x08, 0xe0, 0x14, 0x34, 0xd2, 0x6d, 0xe9,
|
|---|
| 147 | 0x7a, 0xec, 0x91, 0x61, 0xa7, 0xe1, 0x81, 0x69,
|
|---|
| 148 | 0x47, 0x1c, 0xc7, 0xf3
|
|---|
| 149 | };
|
|---|
| 150 |
|
|---|
| 151 | static const unsigned char shake256_largemsg_output[] = {
|
|---|
| 152 | 0x64, 0xea, 0x24, 0x6a, 0xab, 0x80, 0x37, 0x9e,
|
|---|
| 153 | 0x08, 0xe2, 0x19, 0x9e, 0x09, 0x69, 0xe2, 0xee,
|
|---|
| 154 | 0x1a, 0x5d, 0xd1, 0x68, 0x68, 0xec, 0x8d, 0x42,
|
|---|
| 155 | 0xd0, 0xf8, 0xb8, 0x44, 0x74, 0x54, 0x87, 0x3e,
|
|---|
| 156 | };
|
|---|
| 157 |
|
|---|
| 158 | static EVP_MD_CTX *shake_setup(const char *name)
|
|---|
| 159 | {
|
|---|
| 160 | EVP_MD_CTX *ctx = NULL;
|
|---|
| 161 | EVP_MD *md = NULL;
|
|---|
| 162 |
|
|---|
| 163 | if (!TEST_ptr(md = EVP_MD_fetch(NULL, name, NULL)))
|
|---|
| 164 | return NULL;
|
|---|
| 165 |
|
|---|
| 166 | if (!TEST_ptr(ctx = EVP_MD_CTX_new()))
|
|---|
| 167 | goto err;
|
|---|
| 168 | if (!TEST_true(EVP_DigestInit_ex2(ctx, md, NULL)))
|
|---|
| 169 | goto err;
|
|---|
| 170 | EVP_MD_free(md);
|
|---|
| 171 | return ctx;
|
|---|
| 172 | err:
|
|---|
| 173 | EVP_MD_free(md);
|
|---|
| 174 | EVP_MD_CTX_free(ctx);
|
|---|
| 175 | return NULL;
|
|---|
| 176 | }
|
|---|
| 177 |
|
|---|
| 178 | static int shake_kat_test(void)
|
|---|
| 179 | {
|
|---|
| 180 | int ret = 0;
|
|---|
| 181 | EVP_MD_CTX *ctx = NULL;
|
|---|
| 182 | unsigned char out[sizeof(shake256_output)];
|
|---|
| 183 |
|
|---|
| 184 | if (!TEST_ptr(ctx = shake_setup("SHAKE256")))
|
|---|
| 185 | return 0;
|
|---|
| 186 | if (!TEST_true(EVP_DigestUpdate(ctx, shake256_input,
|
|---|
| 187 | sizeof(shake256_input)))
|
|---|
| 188 | || !TEST_true(EVP_DigestFinalXOF(ctx, out, sizeof(out)))
|
|---|
| 189 | || !TEST_mem_eq(out, sizeof(out),
|
|---|
| 190 | shake256_output,sizeof(shake256_output))
|
|---|
| 191 | /* Test that a second call to EVP_DigestFinalXOF fails */
|
|---|
| 192 | || !TEST_false(EVP_DigestFinalXOF(ctx, out, sizeof(out)))
|
|---|
| 193 | /* Test that a call to EVP_DigestSqueeze fails */
|
|---|
| 194 | || !TEST_false(EVP_DigestSqueeze(ctx, out, sizeof(out))))
|
|---|
| 195 | goto err;
|
|---|
| 196 | ret = 1;
|
|---|
| 197 | err:
|
|---|
| 198 | EVP_MD_CTX_free(ctx);
|
|---|
| 199 | return ret;
|
|---|
| 200 | }
|
|---|
| 201 |
|
|---|
| 202 | static int shake_kat_digestfinal_test(void)
|
|---|
| 203 | {
|
|---|
| 204 | int ret = 0;
|
|---|
| 205 | unsigned int digest_length = 0;
|
|---|
| 206 | EVP_MD_CTX *ctx = NULL;
|
|---|
| 207 | unsigned char out[sizeof(shake256_output)];
|
|---|
| 208 |
|
|---|
| 209 | if (!TEST_ptr(ctx = shake_setup("SHAKE256")))
|
|---|
| 210 | return 0;
|
|---|
| 211 | if (!TEST_true(EVP_DigestUpdate(ctx, shake256_input,
|
|---|
| 212 | sizeof(shake256_input)))
|
|---|
| 213 | || !TEST_true(EVP_DigestFinal(ctx, out, &digest_length))
|
|---|
| 214 | || !TEST_uint_eq(digest_length, 32)
|
|---|
| 215 | || !TEST_mem_eq(out, digest_length,
|
|---|
| 216 | shake256_output, digest_length)
|
|---|
| 217 | || !TEST_false(EVP_DigestFinalXOF(ctx, out, sizeof(out))))
|
|---|
| 218 | goto err;
|
|---|
| 219 | ret = 1;
|
|---|
| 220 | err:
|
|---|
| 221 | EVP_MD_CTX_free(ctx);
|
|---|
| 222 | return ret;
|
|---|
| 223 | }
|
|---|
| 224 |
|
|---|
| 225 | /*
|
|---|
| 226 | * Test that EVP_DigestFinal() returns the output length
|
|---|
| 227 | * set by the OSSL_DIGEST_PARAM_XOFLEN param.
|
|---|
| 228 | */
|
|---|
| 229 | static int shake_kat_digestfinal_xoflen_test(void)
|
|---|
| 230 | {
|
|---|
| 231 | int ret = 0;
|
|---|
| 232 | unsigned int digest_length = 0;
|
|---|
| 233 | EVP_MD_CTX *ctx = NULL;
|
|---|
| 234 | unsigned char out[sizeof(shake256_output)];
|
|---|
| 235 | OSSL_PARAM params[2];
|
|---|
| 236 | size_t sz = 12;
|
|---|
| 237 |
|
|---|
| 238 | if (!TEST_ptr(ctx = shake_setup("SHAKE256")))
|
|---|
| 239 | return 0;
|
|---|
| 240 |
|
|---|
| 241 | memset(out, 0, sizeof(out));
|
|---|
| 242 | params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &sz);
|
|---|
| 243 | params[1] = OSSL_PARAM_construct_end();
|
|---|
| 244 |
|
|---|
| 245 | if (!TEST_int_eq(EVP_MD_CTX_set_params(ctx, params), 1)
|
|---|
| 246 | || !TEST_true(EVP_DigestUpdate(ctx, shake256_input,
|
|---|
| 247 | sizeof(shake256_input)))
|
|---|
| 248 | || !TEST_true(EVP_DigestFinal(ctx, out, &digest_length))
|
|---|
| 249 | || !TEST_uint_eq(digest_length, (unsigned int)sz)
|
|---|
| 250 | || !TEST_mem_eq(out, digest_length,
|
|---|
| 251 | shake256_output, digest_length)
|
|---|
| 252 | || !TEST_uchar_eq(out[digest_length], 0))
|
|---|
| 253 | goto err;
|
|---|
| 254 | ret = 1;
|
|---|
| 255 | err:
|
|---|
| 256 | EVP_MD_CTX_free(ctx);
|
|---|
| 257 | return ret;
|
|---|
| 258 | }
|
|---|
| 259 |
|
|---|
| 260 | /*
|
|---|
| 261 | * Test that multiple absorb calls gives the expected result.
|
|---|
| 262 | * This is a nested test that uses multiple strides for the input.
|
|---|
| 263 | */
|
|---|
| 264 | static int shake_absorb_test(void)
|
|---|
| 265 | {
|
|---|
| 266 | int ret = 0;
|
|---|
| 267 | EVP_MD_CTX *ctx = NULL;
|
|---|
| 268 | unsigned char out[sizeof(shake256_largemsg_output)];
|
|---|
| 269 | size_t total = sizeof(shake256_largemsg_input);
|
|---|
| 270 | size_t i, stride, sz;
|
|---|
| 271 |
|
|---|
| 272 | if (!TEST_ptr(ctx = shake_setup("SHAKE256")))
|
|---|
| 273 | return 0;
|
|---|
| 274 |
|
|---|
| 275 | for (stride = 1; stride < total; ++stride) {
|
|---|
| 276 | sz = 0;
|
|---|
| 277 | for (i = 0; i < total; i += sz) {
|
|---|
| 278 | sz += stride;
|
|---|
| 279 | if ((i + sz) > total)
|
|---|
| 280 | sz = total - i;
|
|---|
| 281 | if (!TEST_true(EVP_DigestUpdate(ctx, shake256_largemsg_input + i,
|
|---|
| 282 | sz)))
|
|---|
| 283 | goto err;
|
|---|
| 284 | }
|
|---|
| 285 | if (!TEST_true(EVP_DigestFinalXOF(ctx, out, sizeof(out)))
|
|---|
| 286 | || !TEST_mem_eq(out, sizeof(out),
|
|---|
| 287 | shake256_largemsg_output,
|
|---|
| 288 | sizeof(shake256_largemsg_output)))
|
|---|
| 289 | goto err;
|
|---|
| 290 | if (!TEST_true(EVP_DigestInit_ex2(ctx, NULL, NULL)))
|
|---|
| 291 | goto err;
|
|---|
| 292 | }
|
|---|
| 293 | ret = 1;
|
|---|
| 294 | err:
|
|---|
| 295 | EVP_MD_CTX_free(ctx);
|
|---|
| 296 | return ret;
|
|---|
| 297 | }
|
|---|
| 298 |
|
|---|
| 299 | /*
|
|---|
| 300 | * Table containing the size of the output to squeeze for the
|
|---|
| 301 | * initially call, followed by a size for each subsequent call.
|
|---|
| 302 | */
|
|---|
| 303 | static const struct {
|
|---|
| 304 | size_t startsz, incsz;
|
|---|
| 305 | } stride_tests[] = {
|
|---|
| 306 | { 1, 1 },
|
|---|
| 307 | { 1, 136 },
|
|---|
| 308 | { 1, 136/2 },
|
|---|
| 309 | { 1, 136/2-1 },
|
|---|
| 310 | { 1, 136/2+1 },
|
|---|
| 311 | { 1, 136*3 },
|
|---|
| 312 | { 8, 8 },
|
|---|
| 313 | { 9, 9 },
|
|---|
| 314 | { 10, 10 },
|
|---|
| 315 | { 136/2 - 1, 136 },
|
|---|
| 316 | { 136/2 - 1, 136-1 },
|
|---|
| 317 | { 136/2 - 1, 136+1 },
|
|---|
| 318 | { 136/2, 136 },
|
|---|
| 319 | { 136/2, 136-1 },
|
|---|
| 320 | { 136/2, 136+1 },
|
|---|
| 321 | { 136/2 + 1, 136 },
|
|---|
| 322 | { 136/2 + 1, 136-1 },
|
|---|
| 323 | { 136/2 + 1, 136+1 },
|
|---|
| 324 | { 136, 2 },
|
|---|
| 325 | { 136, 136 },
|
|---|
| 326 | { 136-1, 136 },
|
|---|
| 327 | { 136-1, 136-1 },
|
|---|
| 328 | { 136-1, 136+1 },
|
|---|
| 329 | { 136+1, 136 },
|
|---|
| 330 | { 136+1, 136-1 },
|
|---|
| 331 | { 136+1, 136+1 },
|
|---|
| 332 | { 136*3, 136 },
|
|---|
| 333 | { 136*3, 136 + 1 },
|
|---|
| 334 | { 136*3, 136 - 1 },
|
|---|
| 335 | { 136*3, 136/2 },
|
|---|
| 336 | { 136*3, 136/2 + 1 },
|
|---|
| 337 | { 136*3, 136/2 - 1 },
|
|---|
| 338 | };
|
|---|
| 339 |
|
|---|
| 340 | /*
|
|---|
| 341 | * Helper to do multiple squeezes of output data using SHAKE256.
|
|---|
| 342 | * tst is an index into the stride_tests[] containing an initial starting
|
|---|
| 343 | * output length, followed by a second output length to use for all remaining
|
|---|
| 344 | * squeezes. expected_outlen contains the total number of bytes to squeeze.
|
|---|
| 345 | * in and inlen represent the input to absorb. expected_out and expected_outlen
|
|---|
| 346 | * represent the expected output.
|
|---|
| 347 | */
|
|---|
| 348 | static int do_shake_squeeze_test(int tst,
|
|---|
| 349 | const unsigned char *in, size_t inlen,
|
|---|
| 350 | const unsigned char *expected_out,
|
|---|
| 351 | size_t expected_outlen)
|
|---|
| 352 | {
|
|---|
| 353 | int ret = 0;
|
|---|
| 354 | EVP_MD_CTX *ctx = NULL;
|
|---|
| 355 | unsigned char *out = NULL;
|
|---|
| 356 | size_t i = 0, sz = stride_tests[tst].startsz;
|
|---|
| 357 |
|
|---|
| 358 | if (!TEST_ptr(ctx = shake_setup("SHAKE256")))
|
|---|
| 359 | return 0;
|
|---|
| 360 | if (!TEST_ptr(out = OPENSSL_malloc(expected_outlen)))
|
|---|
| 361 | goto err;
|
|---|
| 362 | if (!TEST_true(EVP_DigestUpdate(ctx, in, inlen)))
|
|---|
| 363 | goto err;
|
|---|
| 364 |
|
|---|
| 365 | while (i < expected_outlen) {
|
|---|
| 366 | if ((i + sz) > expected_outlen)
|
|---|
| 367 | sz = expected_outlen - i;
|
|---|
| 368 | if (!TEST_true(EVP_DigestSqueeze(ctx, out + i, sz)))
|
|---|
| 369 | goto err;
|
|---|
| 370 | i += sz;
|
|---|
| 371 | sz = stride_tests[tst].incsz;
|
|---|
| 372 | }
|
|---|
| 373 | if (!TEST_mem_eq(out, expected_outlen, expected_out, expected_outlen))
|
|---|
| 374 | goto err;
|
|---|
| 375 | ret = 1;
|
|---|
| 376 | err:
|
|---|
| 377 | OPENSSL_free(out);
|
|---|
| 378 | EVP_MD_CTX_free(ctx);
|
|---|
| 379 | return ret;
|
|---|
| 380 | }
|
|---|
| 381 |
|
|---|
| 382 | static int shake_squeeze_kat_test(int tst)
|
|---|
| 383 | {
|
|---|
| 384 | return do_shake_squeeze_test(tst, shake256_input, sizeof(shake256_input),
|
|---|
| 385 | shake256_output, sizeof(shake256_output));
|
|---|
| 386 | }
|
|---|
| 387 |
|
|---|
| 388 | /*
|
|---|
| 389 | * Generate some random input to absorb, and then
|
|---|
| 390 | * squeeze it out in one operation to get a expected
|
|---|
| 391 | * output. Use this to test that multiple squeeze calls
|
|---|
| 392 | * on the same input gives the same output.
|
|---|
| 393 | */
|
|---|
| 394 | static int shake_squeeze_large_test(int tst)
|
|---|
| 395 | {
|
|---|
| 396 | int ret = 0;
|
|---|
| 397 | EVP_MD_CTX *ctx = NULL;
|
|---|
| 398 | unsigned char msg[16];
|
|---|
| 399 | unsigned char out[2000];
|
|---|
| 400 |
|
|---|
| 401 | if (!TEST_int_gt(RAND_bytes(msg, sizeof(msg)), 0)
|
|---|
| 402 | || !TEST_ptr(ctx = shake_setup("SHAKE256"))
|
|---|
| 403 | || !TEST_true(EVP_DigestUpdate(ctx, msg, sizeof(msg)))
|
|---|
| 404 | || !TEST_true(EVP_DigestFinalXOF(ctx, out, sizeof(out))))
|
|---|
| 405 | goto err;
|
|---|
| 406 |
|
|---|
| 407 | ret = do_shake_squeeze_test(tst, msg, sizeof(msg), out, sizeof(out));
|
|---|
| 408 | err:
|
|---|
| 409 | EVP_MD_CTX_free(ctx);
|
|---|
| 410 | return ret;
|
|---|
| 411 | }
|
|---|
| 412 |
|
|---|
| 413 | static const size_t dupoffset_tests[] = {
|
|---|
| 414 | 1, 135, 136, 137, 136*3-1, 136*3, 136*3+1
|
|---|
| 415 | };
|
|---|
| 416 |
|
|---|
| 417 | /* Helper function to test that EVP_MD_CTX_dup() copies the internal state */
|
|---|
| 418 | static int do_shake_squeeze_dup_test(int tst, const char *alg,
|
|---|
| 419 | const unsigned char *in, size_t inlen,
|
|---|
| 420 | const unsigned char *expected_out,
|
|---|
| 421 | size_t expected_outlen)
|
|---|
| 422 | {
|
|---|
| 423 | int ret = 0;
|
|---|
| 424 | EVP_MD_CTX *cur, *ctx = NULL, *dupctx = NULL;
|
|---|
| 425 | unsigned char *out = NULL;
|
|---|
| 426 | size_t i = 0, sz = 10;
|
|---|
| 427 | size_t dupoffset = dupoffset_tests[tst];
|
|---|
| 428 |
|
|---|
| 429 | if (!TEST_ptr(ctx = shake_setup(alg)))
|
|---|
| 430 | return 0;
|
|---|
| 431 | cur = ctx;
|
|---|
| 432 | if (!TEST_ptr(out = OPENSSL_malloc(expected_outlen)))
|
|---|
| 433 | goto err;
|
|---|
| 434 | if (!TEST_true(EVP_DigestUpdate(ctx, in, inlen)))
|
|---|
| 435 | goto err;
|
|---|
| 436 |
|
|---|
| 437 | while (i < expected_outlen) {
|
|---|
| 438 | if ((i + sz) > expected_outlen)
|
|---|
| 439 | sz = expected_outlen - i;
|
|---|
| 440 | if (!TEST_true(EVP_DigestSqueeze(cur, out + i, sz)))
|
|---|
| 441 | goto err;
|
|---|
| 442 | i += sz;
|
|---|
| 443 | /* At a certain offset we swap to a new ctx that copies the state */
|
|---|
| 444 | if (dupctx == NULL && i >= dupoffset) {
|
|---|
| 445 | if (!TEST_ptr(dupctx = EVP_MD_CTX_dup(ctx)))
|
|---|
| 446 | goto err;
|
|---|
| 447 | cur = dupctx;
|
|---|
| 448 | }
|
|---|
| 449 | }
|
|---|
| 450 | if (!TEST_mem_eq(out, expected_outlen, expected_out, expected_outlen))
|
|---|
| 451 | goto err;
|
|---|
| 452 | ret = 1;
|
|---|
| 453 | err:
|
|---|
| 454 | OPENSSL_free(out);
|
|---|
| 455 | EVP_MD_CTX_free(ctx);
|
|---|
| 456 | EVP_MD_CTX_free(dupctx);
|
|---|
| 457 | return ret;
|
|---|
| 458 | }
|
|---|
| 459 |
|
|---|
| 460 | /* Test that the internal state can be copied */
|
|---|
| 461 | static int shake_squeeze_dup_test(int tst)
|
|---|
| 462 | {
|
|---|
| 463 | int ret = 0;
|
|---|
| 464 | EVP_MD_CTX *ctx = NULL;
|
|---|
| 465 | unsigned char msg[16];
|
|---|
| 466 | unsigned char out[1000];
|
|---|
| 467 | const char *alg = "SHAKE128";
|
|---|
| 468 |
|
|---|
| 469 | if (!TEST_int_gt(RAND_bytes(msg, sizeof(msg)), 0)
|
|---|
| 470 | || !TEST_ptr(ctx = shake_setup(alg))
|
|---|
| 471 | || !TEST_true(EVP_DigestUpdate(ctx, msg, sizeof(msg)))
|
|---|
| 472 | || !TEST_true(EVP_DigestFinalXOF(ctx, out, sizeof(out))))
|
|---|
| 473 | goto err;
|
|---|
| 474 |
|
|---|
| 475 | ret = do_shake_squeeze_dup_test(tst, alg, msg, sizeof(msg),
|
|---|
| 476 | out, sizeof(out));
|
|---|
| 477 | err:
|
|---|
| 478 | EVP_MD_CTX_free(ctx);
|
|---|
| 479 | return ret;
|
|---|
| 480 | }
|
|---|
| 481 |
|
|---|
| 482 | int setup_tests(void)
|
|---|
| 483 | {
|
|---|
| 484 | ADD_TEST(shake_kat_test);
|
|---|
| 485 | ADD_TEST(shake_kat_digestfinal_test);
|
|---|
| 486 | ADD_TEST(shake_kat_digestfinal_xoflen_test);
|
|---|
| 487 | ADD_TEST(shake_absorb_test);
|
|---|
| 488 | ADD_ALL_TESTS(shake_squeeze_kat_test, OSSL_NELEM(stride_tests));
|
|---|
| 489 | ADD_ALL_TESTS(shake_squeeze_large_test, OSSL_NELEM(stride_tests));
|
|---|
| 490 | ADD_ALL_TESTS(shake_squeeze_dup_test, OSSL_NELEM(dupoffset_tests));
|
|---|
| 491 | return 1;
|
|---|
| 492 | }
|
|---|
