1 | /**
|
---|
2 | * \file xtea.h
|
---|
3 | *
|
---|
4 | * \brief XTEA block cipher (32-bit)
|
---|
5 | */
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
|
---|
8 | * SPDX-License-Identifier: Apache-2.0
|
---|
9 | *
|
---|
10 | * Licensed under the Apache License, Version 2.0 (the "License"); you may
|
---|
11 | * not use this file except in compliance with the License.
|
---|
12 | * You may obtain a copy of the License at
|
---|
13 | *
|
---|
14 | * http://www.apache.org/licenses/LICENSE-2.0
|
---|
15 | *
|
---|
16 | * Unless required by applicable law or agreed to in writing, software
|
---|
17 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
---|
18 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
---|
19 | * See the License for the specific language governing permissions and
|
---|
20 | * limitations under the License.
|
---|
21 | *
|
---|
22 | * This file is part of mbed TLS (https://tls.mbed.org)
|
---|
23 | */
|
---|
24 | #ifndef MBEDTLS_XTEA_H
|
---|
25 | #define MBEDTLS_XTEA_H
|
---|
26 |
|
---|
27 | #if !defined(MBEDTLS_CONFIG_FILE)
|
---|
28 | #include "config.h"
|
---|
29 | #else
|
---|
30 | #include MBEDTLS_CONFIG_FILE
|
---|
31 | #endif
|
---|
32 |
|
---|
33 | #include <stddef.h>
|
---|
34 | #include <stdint.h>
|
---|
35 |
|
---|
36 | #define MBEDTLS_XTEA_ENCRYPT 1
|
---|
37 | #define MBEDTLS_XTEA_DECRYPT 0
|
---|
38 |
|
---|
39 | #define MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH -0x0028 /**< The data input has an invalid length. */
|
---|
40 |
|
---|
41 | /* MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED is deprecated and should not be used. */
|
---|
42 | #define MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED -0x0029 /**< XTEA hardware accelerator failed. */
|
---|
43 |
|
---|
44 | #ifdef __cplusplus
|
---|
45 | extern "C" {
|
---|
46 | #endif
|
---|
47 |
|
---|
48 | #if !defined(MBEDTLS_XTEA_ALT)
|
---|
49 | // Regular implementation
|
---|
50 | //
|
---|
51 |
|
---|
52 | /**
|
---|
53 | * \brief XTEA context structure
|
---|
54 | */
|
---|
55 | typedef struct mbedtls_xtea_context
|
---|
56 | {
|
---|
57 | uint32_t k[4]; /*!< key */
|
---|
58 | }
|
---|
59 | mbedtls_xtea_context;
|
---|
60 |
|
---|
61 | #else /* MBEDTLS_XTEA_ALT */
|
---|
62 | #include "xtea_alt.h"
|
---|
63 | #endif /* MBEDTLS_XTEA_ALT */
|
---|
64 |
|
---|
65 | /**
|
---|
66 | * \brief Initialize XTEA context
|
---|
67 | *
|
---|
68 | * \param ctx XTEA context to be initialized
|
---|
69 | */
|
---|
70 | void mbedtls_xtea_init( mbedtls_xtea_context *ctx );
|
---|
71 |
|
---|
72 | /**
|
---|
73 | * \brief Clear XTEA context
|
---|
74 | *
|
---|
75 | * \param ctx XTEA context to be cleared
|
---|
76 | */
|
---|
77 | void mbedtls_xtea_free( mbedtls_xtea_context *ctx );
|
---|
78 |
|
---|
79 | /**
|
---|
80 | * \brief XTEA key schedule
|
---|
81 | *
|
---|
82 | * \param ctx XTEA context to be initialized
|
---|
83 | * \param key the secret key
|
---|
84 | */
|
---|
85 | void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] );
|
---|
86 |
|
---|
87 | /**
|
---|
88 | * \brief XTEA cipher function
|
---|
89 | *
|
---|
90 | * \param ctx XTEA context
|
---|
91 | * \param mode MBEDTLS_XTEA_ENCRYPT or MBEDTLS_XTEA_DECRYPT
|
---|
92 | * \param input 8-byte input block
|
---|
93 | * \param output 8-byte output block
|
---|
94 | *
|
---|
95 | * \return 0 if successful
|
---|
96 | */
|
---|
97 | int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx,
|
---|
98 | int mode,
|
---|
99 | const unsigned char input[8],
|
---|
100 | unsigned char output[8] );
|
---|
101 |
|
---|
102 | #if defined(MBEDTLS_CIPHER_MODE_CBC)
|
---|
103 | /**
|
---|
104 | * \brief XTEA CBC cipher function
|
---|
105 | *
|
---|
106 | * \param ctx XTEA context
|
---|
107 | * \param mode MBEDTLS_XTEA_ENCRYPT or MBEDTLS_XTEA_DECRYPT
|
---|
108 | * \param length the length of input, multiple of 8
|
---|
109 | * \param iv initialization vector for CBC mode
|
---|
110 | * \param input input block
|
---|
111 | * \param output output block
|
---|
112 | *
|
---|
113 | * \return 0 if successful,
|
---|
114 | * MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH if the length % 8 != 0
|
---|
115 | */
|
---|
116 | int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx,
|
---|
117 | int mode,
|
---|
118 | size_t length,
|
---|
119 | unsigned char iv[8],
|
---|
120 | const unsigned char *input,
|
---|
121 | unsigned char *output);
|
---|
122 | #endif /* MBEDTLS_CIPHER_MODE_CBC */
|
---|
123 |
|
---|
124 | #if defined(MBEDTLS_SELF_TEST)
|
---|
125 |
|
---|
126 | /**
|
---|
127 | * \brief Checkup routine
|
---|
128 | *
|
---|
129 | * \return 0 if successful, or 1 if the test failed
|
---|
130 | */
|
---|
131 | int mbedtls_xtea_self_test( int verbose );
|
---|
132 |
|
---|
133 | #endif /* MBEDTLS_SELF_TEST */
|
---|
134 |
|
---|
135 | #ifdef __cplusplus
|
---|
136 | }
|
---|
137 | #endif
|
---|
138 |
|
---|
139 | #endif /* xtea.h */
|
---|