/* tweetnacl.h — TweetNaCl 用于 MeowOS .mpk 签名/验签的最小声明头（Ed25519 + SHA-512 子集）。
 * 实现：https://tweetnacl.cr.yp.to/20140427/tweetnacl.c （公有领域）。
 * 仅暴露 meow_verify / meow_sign 需要的一小片 API；其余（salsa20/box/secretbox…）
 * 在 tweetnacl.c 内保留但未声明，未引用即不进入最终链接。 */
#ifndef TWEETNACL_H
#define TWEETNACL_H

#define crypto_sign_BYTES          64
#define crypto_sign_PUBLICKEYBYTES 32
#define crypto_sign_SECRETKEYBYTES 64
#define crypto_hash_BYTES          64

int crypto_verify_16(const unsigned char *x, const unsigned char *y);
int crypto_verify_32(const unsigned char *x, const unsigned char *y);
int crypto_hash(unsigned char *out, const unsigned char *m, unsigned long long n);

int crypto_sign_keypair(unsigned char *public_key, unsigned char *secret_key);
int crypto_sign(unsigned char *sm, unsigned long long *smlen,
                const unsigned char *m, unsigned long long n, const unsigned char *sk);
int crypto_sign_open(unsigned char *m, unsigned long long *mlen,
                     const unsigned char *sm, unsigned long long n, const unsigned char *pk);

#endif /* TWEETNACL_H */