File syn_chacha20poly1305.h¶

File List > crypto > syn_chacha20poly1305.h
#ifndef SYN_CHACHA20POLY1305_H
#define SYN_CHACHA20POLY1305_H

#if __has_include("syn_config.h")
#include "syn_config.h"
#endif

#if !defined(SYN_USE_CHACHA20POLY1305) || SYN_USE_CHACHA20POLY1305

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

/* ── ChaCha20 ───────────────────────────────────────────────────────────── */

void syn_chacha20_xor(const uint8_t key[32], const uint8_t nonce[12], uint32_t counter,
                      const uint8_t *in, size_t len, uint8_t *out);

void syn_chacha20_block(const uint8_t key[32], const uint8_t nonce[12], uint32_t counter,
                        uint8_t out[64]);

/* ── ChaCha20-Poly1305 AEAD ─────────────────────────────────────────────── */

void syn_aead_encrypt(const uint8_t key[32], const uint8_t nonce[12], const uint8_t *aad,
                      size_t aad_len, const uint8_t *plaintext, size_t pt_len, uint8_t *ciphertext,
                      uint8_t tag[16]);

bool syn_aead_decrypt(const uint8_t key[32], const uint8_t nonce[12], const uint8_t *aad,
                      size_t aad_len, const uint8_t *ciphertext, size_t ct_len,
                      const uint8_t tag[16], uint8_t *plaintext);

void syn_aead_encrypt_inplace(const uint8_t key[32], const uint8_t nonce[12], const uint8_t *aad,
                              size_t aad_len, uint8_t *buf, size_t len, uint8_t tag[16]);

bool syn_aead_decrypt_inplace(const uint8_t key[32], const uint8_t nonce[12], const uint8_t *aad,
                              size_t aad_len, uint8_t *buf, size_t len, const uint8_t tag[16]);

#ifdef __cplusplus
}
#endif

#endif /* SYN_USE_CHACHA20POLY1305 */

#endif /* SYN_CHACHA20POLY1305_H */