#ifndef CHACHA20POLY1305_H
#define CHACHA20POLY1305_H

#include <stdint.h>
#include "ecrypt_sync.h"
#include "poly1305_donna.h"

typedef struct {
    ECRYPT_ctx chacha20;
    poly1305_context poly1305;
} chacha20poly1305_ctx;

void xchacha20poly1305_init(
    chacha20poly1305_ctx* ctx,
    const uint8_t key[32],
    const uint8_t nonce[24]);
void chacha20poly1305_encrypt(chacha20poly1305_ctx* ctx, const uint8_t* in, uint8_t* out, size_t n);
void chacha20poly1305_decrypt(chacha20poly1305_ctx* ctx, const uint8_t* in, uint8_t* out, size_t n);
void chacha20poly1305_auth(chacha20poly1305_ctx* ctx, const uint8_t* in, size_t n);
void chacha20poly1305_finish(chacha20poly1305_ctx* ctx, uint8_t mac[16]);

#endif // CHACHA20POLY1305_H