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TARGET_M480/sha/sha1_alt_sw.h
1 /**
2  * \file sha1.h
3  *
4  * \brief SHA-1 cryptographic hash function
5  *
6  * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
7  * SPDX-License-Identifier: Apache-2.0
8  *
9  * Licensed under the Apache License, Version 2.0 (the "License"); you may
10  * not use this file except in compliance with the License.
11  * You may obtain a copy of the License at
12  *
13  * http://www.apache.org/licenses/LICENSE-2.0
14  *
15  * Unless required by applicable law or agreed to in writing, software
16  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
17  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18  * See the License for the specific language governing permissions and
19  * limitations under the License.
20  *
21  * This file is part of mbed TLS (https://tls.mbed.org)
22  */
23 #ifndef MBEDTLS_SHA1_ALT_SW_H
24 #define MBEDTLS_SHA1_ALT_SW_H
25 
26 #if defined(MBEDTLS_SHA1_ALT)
27 
28 #include <stddef.h>
29 #include <stdint.h>
30 
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34 
35 /**
36  * \brief SHA-1 context structure
37  */
38 typedef struct {
39  uint32_t total[2]; /*!< number of bytes processed */
40  uint32_t state[5]; /*!< intermediate digest state */
41  unsigned char buffer[64]; /*!< data block being processed */
42 }
43 mbedtls_sha1_sw_context;
44 
45 /**
46  * \brief Initialize SHA-1 context
47  *
48  * \param ctx SHA-1 context to be initialized
49  */
50 void mbedtls_sha1_sw_init( mbedtls_sha1_sw_context *ctx );
51 
52 /**
53  * \brief Clear SHA-1 context
54  *
55  * \param ctx SHA-1 context to be cleared
56  */
57 void mbedtls_sha1_sw_free( mbedtls_sha1_sw_context *ctx );
58 
59 /**
60  * \brief Clone (the state of) a SHA-1 context
61  *
62  * \param dst The destination context
63  * \param src The context to be cloned
64  */
65 void mbedtls_sha1_sw_clone( mbedtls_sha1_sw_context *dst,
66  const mbedtls_sha1_sw_context *src );
67 
68 /**
69  * \brief SHA-1 context setup
70  *
71  * \param ctx context to be initialized
72  */
73 void mbedtls_sha1_sw_starts( mbedtls_sha1_sw_context *ctx );
74 
75 /**
76  * \brief SHA-1 process buffer
77  *
78  * \param ctx SHA-1 context
79  * \param input buffer holding the data
80  * \param ilen length of the input data
81  */
82 void mbedtls_sha1_sw_update( mbedtls_sha1_sw_context *ctx, const unsigned char *input, size_t ilen );
83 
84 /**
85  * \brief SHA-1 final digest
86  *
87  * \param ctx SHA-1 context
88  * \param output SHA-1 checksum result
89  */
90 void mbedtls_sha1_sw_finish( mbedtls_sha1_sw_context *ctx, unsigned char output[20] );
91 
92 /* Internal use */
93 void mbedtls_sha1_sw_process( mbedtls_sha1_sw_context *ctx, const unsigned char data[64] );
94 
95 #ifdef __cplusplus
96 }
97 #endif
98 
99 #endif /* MBEDTLS_SHA1_ALT */
100 
101 #endif /* sha1_alt_sw.h */
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