32#ifndef MBEDTLS_CHACHA20_H
33#define MBEDTLS_CHACHA20_H
35#if !defined(MBEDTLS_CONFIG_FILE)
38#include MBEDTLS_CONFIG_FILE
51#define MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA -0x0051
55#define MBEDTLS_ERR_CHACHA20_FEATURE_UNAVAILABLE -0x0053
59#define MBEDTLS_ERR_CHACHA20_HW_ACCEL_FAILED -0x0055
65#if !defined(MBEDTLS_CHACHA20_ALT)
76#include "chacha20_alt.h"
124 const unsigned char key[32] );
146 const unsigned char nonce[12],
180 const unsigned char *input,
181 unsigned char *output );
212 const unsigned char nonce[12],
215 const unsigned char* input,
216 unsigned char* output );
218#if defined(MBEDTLS_SELF_TEST)
225int mbedtls_chacha20_self_test(
int verbose );
Configuration options (set of defines)
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_update(mbedtls_chacha20_context *ctx, size_t size, const unsigned char *input, unsigned char *output)
This function encrypts or decrypts data.
size_t keystream_bytes_used