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#ifndef LIGHTNING_BITCOIN_PUBKEY_H
#define LIGHTNING_BITCOIN_PUBKEY_H
#include "config.h"
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
#include <secp256k1.h>
struct privkey;
#define PUBKEY_DER_LEN 33
struct pubkey {
/* Unpacked pubkey (as used by libsecp256k1 internally) */
secp256k1_pubkey pubkey;
};
/* Convert from hex string of DER (scriptPubKey from validateaddress) */
bool pubkey_from_hexstr(const char *derstr, size_t derlen, struct pubkey *key);
/* Convert from hex string of DER (scriptPubKey from validateaddress) */
char *pubkey_to_hexstr(const tal_t *ctx, const struct pubkey *key);
/* Convenience wrapper for a raw secp256k1_pubkey */
char *secp256k1_pubkey_to_hexstr(const tal_t *ctx, const secp256k1_pubkey *key);
/* Pubkey from privkey */
bool pubkey_from_privkey(const struct privkey *privkey,
struct pubkey *key);
/* Pubkey from DER encoding. */
bool pubkey_from_der(const u8 *der, size_t len, struct pubkey *key);
/* Pubkey to DER encoding: must be valid pubkey. */
void pubkey_to_der(u8 der[PUBKEY_DER_LEN], const struct pubkey *key);
/* Are these keys equal? */
bool pubkey_eq(const struct pubkey *a, const struct pubkey *b);
/* Compare the keys `a` and `b`. Return <0 if `a`<`b`, 0 if equal and >0 otherwise */
int pubkey_cmp(const struct pubkey *a, const struct pubkey *b);
#endif /* LIGHTNING_PUBKEY_H */