mbed TLS v3.1.0
poly1305.h
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1 
15 /*
16  * Copyright The Mbed TLS Contributors
17  * SPDX-License-Identifier: Apache-2.0
18  *
19  * Licensed under the Apache License, Version 2.0 (the "License"); you may
20  * not use this file except in compliance with the License.
21  * You may obtain a copy of the License at
22  *
23  * http://www.apache.org/licenses/LICENSE-2.0
24  *
25  * Unless required by applicable law or agreed to in writing, software
26  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
27  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
28  * See the License for the specific language governing permissions and
29  * limitations under the License.
30  */
31 
32 #ifndef MBEDTLS_POLY1305_H
33 #define MBEDTLS_POLY1305_H
34 #include "mbedtls/private_access.h"
35 
36 #include "mbedtls/build_info.h"
37 
38 #include <stdint.h>
39 #include <stddef.h>
40 
42 #define MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA -0x0057
43 
44 #ifdef __cplusplus
45 extern "C" {
46 #endif
47 
48 #if !defined(MBEDTLS_POLY1305_ALT)
49 
50 typedef struct mbedtls_poly1305_context
51 {
52  uint32_t MBEDTLS_PRIVATE(r)[4];
53  uint32_t MBEDTLS_PRIVATE(s)[4];
54  uint32_t MBEDTLS_PRIVATE(acc)[5];
55  uint8_t MBEDTLS_PRIVATE(queue)[16];
56  size_t MBEDTLS_PRIVATE(queue_len);
57 }
58 mbedtls_poly1305_context;
59 
60 #else /* MBEDTLS_POLY1305_ALT */
61 #include "poly1305_alt.h"
62 #endif /* MBEDTLS_POLY1305_ALT */
63 
79 void mbedtls_poly1305_init( mbedtls_poly1305_context *ctx );
80 
89 void mbedtls_poly1305_free( mbedtls_poly1305_context *ctx );
90 
104 int mbedtls_poly1305_starts( mbedtls_poly1305_context *ctx,
105  const unsigned char key[32] );
106 
125 int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx,
126  const unsigned char *input,
127  size_t ilen );
128 
141 int mbedtls_poly1305_finish( mbedtls_poly1305_context *ctx,
142  unsigned char mac[16] );
143 
162 int mbedtls_poly1305_mac( const unsigned char key[32],
163  const unsigned char *input,
164  size_t ilen,
165  unsigned char mac[16] );
166 
167 #if defined(MBEDTLS_SELF_TEST)
168 
174 int mbedtls_poly1305_self_test( int verbose );
175 #endif /* MBEDTLS_SELF_TEST */
176 
177 #ifdef __cplusplus
178 }
179 #endif
180 
181 #endif /* MBEDTLS_POLY1305_H */
#define MBEDTLS_PRIVATE(member)
int mbedtls_poly1305_self_test(int verbose)
The Poly1305 checkup routine.
Macro wrapper for struct's memebrs.
int mbedtls_poly1305_starts(mbedtls_poly1305_context *ctx, const unsigned char key[32])
This function sets the one-time authentication key.
Build-time configuration info.
int mbedtls_poly1305_update(mbedtls_poly1305_context *ctx, const unsigned char *input, size_t ilen)
This functions feeds an input buffer into an ongoing Poly1305 computation.
void mbedtls_poly1305_init(mbedtls_poly1305_context *ctx)
This function initializes the specified Poly1305 context.
int mbedtls_poly1305_mac(const unsigned char key[32], const unsigned char *input, size_t ilen, unsigned char mac[16])
This function calculates the Poly1305 MAC of the input buffer with the provided key.
int mbedtls_poly1305_finish(mbedtls_poly1305_context *ctx, unsigned char mac[16])
This function generates the Poly1305 Message Authentication Code (MAC).
void mbedtls_poly1305_free(mbedtls_poly1305_context *ctx)
This function releases and clears the specified Poly1305 context.