Mbed TLS v3.6.1
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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
23
24#include "mbedtls/build_info.h"
25
26#include <stdint.h>
27#include <stddef.h>
28
30#define MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA -0x0051
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
36#if !defined(MBEDTLS_CHACHA20_ALT)
37
39 uint32_t MBEDTLS_PRIVATE(state)[16];
40 uint8_t MBEDTLS_PRIVATE(keystream8)[64];
41 size_t MBEDTLS_PRIVATE(keystream_bytes_used);
42}
44
45#else /* MBEDTLS_CHACHA20_ALT */
46#include "chacha20_alt.h"
47#endif /* MBEDTLS_CHACHA20_ALT */
48
65
76
94 const unsigned char key[32]);
95
116 const unsigned char nonce[12],
117 uint32_t counter);
118
149 size_t size,
150 const unsigned char *input,
151 unsigned char *output);
152
181int mbedtls_chacha20_crypt(const unsigned char key[32],
182 const unsigned char nonce[12],
183 uint32_t counter,
184 size_t size,
185 const unsigned char *input,
186 unsigned char *output);
187
188#if defined(MBEDTLS_SELF_TEST)
196#endif /* MBEDTLS_SELF_TEST */
197
198#ifdef __cplusplus
199}
200#endif
201
202#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.
Build-time configuration info.
Macro wrapper for struct's members.
#define MBEDTLS_PRIVATE(member)