Mbed TLS v2.28.9
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chacha20.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_CHACHA20_H
21#define MBEDTLS_CHACHA20_H
22
23#if !defined(MBEDTLS_CONFIG_FILE)
24#include "mbedtls/config.h"
25#else
26#include MBEDTLS_CONFIG_FILE
27#endif
28
29#include <stdint.h>
30#include <stddef.h>
31
33#define MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA -0x0051
34
35/* MBEDTLS_ERR_CHACHA20_FEATURE_UNAVAILABLE is deprecated and should not be
36 * used. */
38#define MBEDTLS_ERR_CHACHA20_FEATURE_UNAVAILABLE -0x0053
39
40/* MBEDTLS_ERR_CHACHA20_HW_ACCEL_FAILED is deprecated and should not be used.
41 */
43#define MBEDTLS_ERR_CHACHA20_HW_ACCEL_FAILED -0x0055
44
45#ifdef __cplusplus
46extern "C" {
47#endif
48
49#if !defined(MBEDTLS_CHACHA20_ALT)
50
52 uint32_t state[16];
53 uint8_t keystream8[64];
55}
57
58#else /* MBEDTLS_CHACHA20_ALT */
59#include "chacha20_alt.h"
60#endif /* MBEDTLS_CHACHA20_ALT */
61
78
89
107 const unsigned char key[32]);
108
129 const unsigned char nonce[12],
130 uint32_t counter);
131
162 size_t size,
163 const unsigned char *input,
164 unsigned char *output);
165
194int mbedtls_chacha20_crypt(const unsigned char key[32],
195 const unsigned char nonce[12],
196 uint32_t counter,
197 size_t size,
198 const unsigned char *input,
199 unsigned char *output);
200
201#if defined(MBEDTLS_SELF_TEST)
209#endif /* MBEDTLS_SELF_TEST */
210
211#ifdef __cplusplus
212}
213#endif
214
215#endif /* MBEDTLS_CHACHA20_H */
void mbedtls_chacha20_free(mbedtls_chacha20_context *ctx)
This function releases and clears the specified ChaCha20 context.
int mbedtls_chacha20_crypt(const unsigned char key[32], const unsigned char nonce[12], uint32_t counter, size_t size, const unsigned char *input, unsigned char *output)
This function encrypts or decrypts data with ChaCha20 and the given key and nonce.
int mbedtls_chacha20_setkey(mbedtls_chacha20_context *ctx, const unsigned char key[32])
This function sets the encryption/decryption key.
void mbedtls_chacha20_init(mbedtls_chacha20_context *ctx)
This function initializes the specified ChaCha20 context.
int mbedtls_chacha20_starts(mbedtls_chacha20_context *ctx, const unsigned char nonce[12], uint32_t counter)
This function sets the nonce and initial counter value.
int mbedtls_chacha20_self_test(int verbose)
The ChaCha20 checkup routine.
struct mbedtls_chacha20_context mbedtls_chacha20_context
int mbedtls_chacha20_update(mbedtls_chacha20_context *ctx, size_t size, const unsigned char *input, unsigned char *output)
This function encrypts or decrypts data.
Configuration options (set of defines)
uint8_t keystream8[64]
Definition chacha20.h:53