Mbed TLS v3.5.0
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 {
55
56#if !defined(MBEDTLS_CHACHAPOLY_ALT)
57
58#include "mbedtls/chacha20.h"
59
63 uint64_t MBEDTLS_PRIVATE(aad_len);
64 uint64_t MBEDTLS_PRIVATE(ciphertext_len);
65 int MBEDTLS_PRIVATE(state);
67}
69
70#else /* !MBEDTLS_CHACHAPOLY_ALT */
71#include "chachapoly_alt.h"
72#endif /* !MBEDTLS_CHACHAPOLY_ALT */
73
117
126
139 const unsigned char key[32]);
140
167 const unsigned char nonce[12],
169
210 const unsigned char *aad,
211 size_t aad_len);
212
245 size_t len,
246 const unsigned char *input,
247 unsigned char *output);
248
266 unsigned char mac[16]);
267
298 size_t length,
299 const unsigned char nonce[12],
300 const unsigned char *aad,
301 size_t aad_len,
302 const unsigned char *input,
303 unsigned char *output,
304 unsigned char tag[16]);
305
332 size_t length,
333 const unsigned char nonce[12],
334 const unsigned char *aad,
335 size_t aad_len,
336 const unsigned char tag[16],
337 const unsigned char *input,
338 unsigned char *output);
339
340#if defined(MBEDTLS_SELF_TEST)
348#endif /* MBEDTLS_SELF_TEST */
349
350#ifdef __cplusplus
351}
352#endif
353
354#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).
struct mbedtls_chachapoly_context mbedtls_chachapoly_context
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:50
@ MBEDTLS_CHACHAPOLY_ENCRYPT
Definition: chachapoly.h:51
@ MBEDTLS_CHACHAPOLY_DECRYPT
Definition: chachapoly.h:52
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.
Build-time configuration info.
This file contains Poly1305 definitions and functions.
Macro wrapper for struct's members.
#define MBEDTLS_PRIVATE(member)