mbed TLS v3.3.0
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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
35
36#include "mbedtls/build_info.h"
37
38/* for shared error codes */
39#include "mbedtls/poly1305.h"
40
42#define MBEDTLS_ERR_CHACHAPOLY_BAD_STATE -0x0054
44#define MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED -0x0056
45
46#ifdef __cplusplus
47extern "C" {
48#endif
49
50typedef enum
51{
56
57#if !defined(MBEDTLS_CHACHAPOLY_ALT)
58
59#include "mbedtls/chacha20.h"
60
62{
65 uint64_t MBEDTLS_PRIVATE(aad_len);
66 uint64_t MBEDTLS_PRIVATE(ciphertext_len);
67 int MBEDTLS_PRIVATE(state);
69}
71
72#else /* !MBEDTLS_CHACHAPOLY_ALT */
73#include "chachapoly_alt.h"
74#endif /* !MBEDTLS_CHACHAPOLY_ALT */
75
119
128
141 const unsigned char key[32] );
142
169 const unsigned char nonce[12],
171
212 const unsigned char *aad,
213 size_t aad_len );
214
247 size_t len,
248 const unsigned char *input,
249 unsigned char *output );
250
268 unsigned char mac[16] );
269
300 size_t length,
301 const unsigned char nonce[12],
302 const unsigned char *aad,
303 size_t aad_len,
304 const unsigned char *input,
305 unsigned char *output,
306 unsigned char tag[16] );
307
334 size_t length,
335 const unsigned char nonce[12],
336 const unsigned char *aad,
337 size_t aad_len,
338 const unsigned char tag[16],
339 const unsigned char *input,
340 unsigned char *output );
341
342#if defined(MBEDTLS_SELF_TEST)
350#endif /* MBEDTLS_SELF_TEST */
351
352#ifdef __cplusplus
353}
354#endif
355
356#endif /* MBEDTLS_CHACHAPOLY_H */
Build-time configuration info.
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:51
@ MBEDTLS_CHACHAPOLY_ENCRYPT
Definition: chachapoly.h:52
@ MBEDTLS_CHACHAPOLY_DECRYPT
Definition: chachapoly.h:53
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.
This file contains Poly1305 definitions and functions.
Macro wrapper for struct's members.
#define MBEDTLS_PRIVATE(member)