Mbed TLS v2.28.5
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chachapoly.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_CHACHAPOLY_H
33#define MBEDTLS_CHACHAPOLY_H
34
35#if !defined(MBEDTLS_CONFIG_FILE)
36#include "mbedtls/config.h"
37#else
38#include MBEDTLS_CONFIG_FILE
39#endif
40
41/* for shared error codes */
42#include "mbedtls/poly1305.h"
43
45#define MBEDTLS_ERR_CHACHAPOLY_BAD_STATE -0x0054
47#define MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED -0x0056
48
49#ifdef __cplusplus
50extern "C" {
51#endif
52
58
59#if !defined(MBEDTLS_CHACHAPOLY_ALT)
60
61#include "mbedtls/chacha20.h"
62
72
73#else /* !MBEDTLS_CHACHAPOLY_ALT */
74#include "chachapoly_alt.h"
75#endif /* !MBEDTLS_CHACHAPOLY_ALT */
76
120
129
142 const unsigned char key[32]);
143
170 const unsigned char nonce[12],
172
213 const unsigned char *aad,
214 size_t aad_len);
215
248 size_t len,
249 const unsigned char *input,
250 unsigned char *output);
251
269 unsigned char mac[16]);
270
301 size_t length,
302 const unsigned char nonce[12],
303 const unsigned char *aad,
304 size_t aad_len,
305 const unsigned char *input,
306 unsigned char *output,
307 unsigned char tag[16]);
308
335 size_t length,
336 const unsigned char nonce[12],
337 const unsigned char *aad,
338 size_t aad_len,
339 const unsigned char tag[16],
340 const unsigned char *input,
341 unsigned char *output);
342
343#if defined(MBEDTLS_SELF_TEST)
351#endif /* MBEDTLS_SELF_TEST */
352
353#ifdef __cplusplus
354}
355#endif
356
357#endif /* MBEDTLS_CHACHAPOLY_H */
This file contains ChaCha20 definitions and functions.
int mbedtls_chachapoly_finish(mbedtls_chachapoly_context *ctx, unsigned char mac[16])
This function finished the ChaCha20-Poly1305 operation and generates the MAC (authentication tag).
void mbedtls_chachapoly_init(mbedtls_chachapoly_context *ctx)
This function initializes the specified ChaCha20-Poly1305 context.
int mbedtls_chachapoly_starts(mbedtls_chachapoly_context *ctx, const unsigned char nonce[12], mbedtls_chachapoly_mode_t mode)
This function starts a ChaCha20-Poly1305 encryption or decryption operation.
int mbedtls_chachapoly_setkey(mbedtls_chachapoly_context *ctx, const unsigned char key[32])
This function sets the ChaCha20-Poly1305 symmetric encryption key.
int mbedtls_chachapoly_update(mbedtls_chachapoly_context *ctx, size_t len, const unsigned char *input, unsigned char *output)
Thus function feeds data to be encrypted or decrypted into an on-going ChaCha20-Poly1305 operation.
void mbedtls_chachapoly_free(mbedtls_chachapoly_context *ctx)
This function releases and clears the specified ChaCha20-Poly1305 context.
int mbedtls_chachapoly_encrypt_and_tag(mbedtls_chachapoly_context *ctx, size_t length, const unsigned char nonce[12], const unsigned char *aad, size_t aad_len, const unsigned char *input, unsigned char *output, unsigned char tag[16])
This function performs a complete ChaCha20-Poly1305 authenticated encryption with the previously-set ...
int mbedtls_chachapoly_self_test(int verbose)
The ChaCha20-Poly1305 checkup routine.
mbedtls_chachapoly_mode_t
Definition chachapoly.h:53
@ MBEDTLS_CHACHAPOLY_ENCRYPT
Definition chachapoly.h:54
@ MBEDTLS_CHACHAPOLY_DECRYPT
Definition chachapoly.h:55
int mbedtls_chachapoly_auth_decrypt(mbedtls_chachapoly_context *ctx, size_t length, const unsigned char nonce[12], const unsigned char *aad, size_t aad_len, const unsigned char tag[16], const unsigned char *input, unsigned char *output)
This function performs a complete ChaCha20-Poly1305 authenticated decryption with the previously-set ...
int mbedtls_chachapoly_update_aad(mbedtls_chachapoly_context *ctx, const unsigned char *aad, size_t aad_len)
This function feeds additional data to be authenticated into an ongoing ChaCha20-Poly1305 operation.
Configuration options (set of defines)
This file contains Poly1305 definitions and functions.
mbedtls_chacha20_context chacha20_ctx
Definition chachapoly.h:64
mbedtls_poly1305_context poly1305_ctx
Definition chachapoly.h:65
mbedtls_chachapoly_mode_t mode
Definition chachapoly.h:69