/* LOCAL TEST SHIM ONLY. The machine has the libsodium 1.0.20 shared library (Nix store) but no
 * development headers, so this declares just the prototypes main.c uses, copied from the
 * libsodium 1.0.20 API. On the ESP32 (ESP-IDF libsodium component) and any normal install,
 * delete this directory and let the real <sodium.h> be found instead. */
#ifndef SODIUM_SHIM_H
#define SODIUM_SHIM_H

#include <stddef.h>

int sodium_init(void);

int crypto_scalarmult_base(unsigned char *q, const unsigned char *n);
int crypto_scalarmult(unsigned char *q, const unsigned char *n, const unsigned char *p);

#define crypto_sign_PUBLICKEYBYTES 32U
#define crypto_sign_SECRETKEYBYTES 64U
#define crypto_sign_BYTES 64U
int crypto_sign_seed_keypair(unsigned char *pk, unsigned char *sk, const unsigned char *seed);
int crypto_sign_detached(unsigned char *sig, unsigned long long *siglen_p, const unsigned char *m,
                         unsigned long long mlen, const unsigned char *sk);
int crypto_sign_verify_detached(const unsigned char *sig, const unsigned char *m,
                                unsigned long long mlen, const unsigned char *pk);

#define crypto_kdf_hkdf_sha256_KEYBYTES 32U
int crypto_kdf_hkdf_sha256_extract(unsigned char prk[crypto_kdf_hkdf_sha256_KEYBYTES],
                                   const unsigned char *salt, size_t salt_len,
                                   const unsigned char *ikm, size_t ikm_len);
int crypto_kdf_hkdf_sha256_expand(unsigned char *out, size_t out_len, const char *ctx,
                                  size_t ctx_len,
                                  const unsigned char prk[crypto_kdf_hkdf_sha256_KEYBYTES]);

#endif