Mbed TLS v2.28.8
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chachapoly.h
Go to the documentation of this file.
1
15/*
16 * Copyright The Mbed TLS Contributors
17 * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
18 */
19
20#ifndef MBEDTLS_CHACHAPOLY_H
21#define MBEDTLS_CHACHAPOLY_H
22
23#if !defined(MBEDTLS_CONFIG_FILE)
24#include "mbedtls/config.h"
25#else
26#include MBEDTLS_CONFIG_FILE
27#endif
28
29/* for shared error codes */
30#include "mbedtls/poly1305.h"
31
33#define MBEDTLS_ERR_CHACHAPOLY_BAD_STATE -0x0054
35#define MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED -0x0056
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
46
47#if !defined(MBEDTLS_CHACHAPOLY_ALT)
48
49#include "mbedtls/chacha20.h"
50
60
61#else /* !MBEDTLS_CHACHAPOLY_ALT */
62#include "chachapoly_alt.h"
63#endif /* !MBEDTLS_CHACHAPOLY_ALT */
64
108
117
130 const unsigned char key[32]);
131
158 const unsigned char nonce[12],
160
201 const unsigned char *aad,
202 size_t aad_len);
203
236 size_t len,
237 const unsigned char *input,
238 unsigned char *output);
239
257 unsigned char mac[16]);
258
289 size_t length,
290 const unsigned char nonce[12],
291 const unsigned char *aad,
292 size_t aad_len,
293 const unsigned char *input,
294 unsigned char *output,
295 unsigned char tag[16]);
296
323 size_t length,
324 const unsigned char nonce[12],
325 const unsigned char *aad,
326 size_t aad_len,
327 const unsigned char tag[16],
328 const unsigned char *input,
329 unsigned char *output);
330
331#if defined(MBEDTLS_SELF_TEST)
339#endif /* MBEDTLS_SELF_TEST */
340
341#ifdef __cplusplus
342}
343#endif
344
345#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:41
@ MBEDTLS_CHACHAPOLY_ENCRYPT
Definition chachapoly.h:42
@ MBEDTLS_CHACHAPOLY_DECRYPT
Definition chachapoly.h:43
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:52
mbedtls_poly1305_context poly1305_ctx
Definition chachapoly.h:53
mbedtls_chachapoly_mode_t mode
Definition chachapoly.h:57