mbed TLS v2.28.1
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chacha20.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_CHACHA20_H
33#define MBEDTLS_CHACHA20_H
34
35#if !defined(MBEDTLS_CONFIG_FILE)
36#include "mbedtls/config.h"
37#else
38#include MBEDTLS_CONFIG_FILE
39#endif
40
41#include <stdint.h>
42#include <stddef.h>
43
45#define MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA -0x0051
46
47/* MBEDTLS_ERR_CHACHA20_FEATURE_UNAVAILABLE is deprecated and should not be
48 * used. */
50#define MBEDTLS_ERR_CHACHA20_FEATURE_UNAVAILABLE -0x0053
51
52/* MBEDTLS_ERR_CHACHA20_HW_ACCEL_FAILED is deprecated and should not be used.
53 */
55#define MBEDTLS_ERR_CHACHA20_HW_ACCEL_FAILED -0x0055
56
57#ifdef __cplusplus
58extern "C" {
59#endif
60
61#if !defined(MBEDTLS_CHACHA20_ALT)
62
64{
65 uint32_t state[16];
66 uint8_t keystream8[64];
68}
70
71#else /* MBEDTLS_CHACHA20_ALT */
72#include "chacha20_alt.h"
73#endif /* MBEDTLS_CHACHA20_ALT */
74
91
102
120 const unsigned char key[32] );
121
142 const unsigned char nonce[12],
143 uint32_t counter );
144
175 size_t size,
176 const unsigned char *input,
177 unsigned char *output );
178
207int mbedtls_chacha20_crypt( const unsigned char key[32],
208 const unsigned char nonce[12],
209 uint32_t counter,
210 size_t size,
211 const unsigned char* input,
212 unsigned char* output );
213
214#if defined(MBEDTLS_SELF_TEST)
221int mbedtls_chacha20_self_test( int verbose );
222#endif /* MBEDTLS_SELF_TEST */
223
224#ifdef __cplusplus
225}
226#endif
227
228#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.
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:66
uint32_t state[16]
Definition: chacha20.h:65