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#ifndef LIGHTNING_BITCOIN_SHADOUBLE_H
#define LIGHTNING_BITCOIN_SHADOUBLE_H
#include <ccan/crypto/sha256/sha256.h>
/* To explicitly distinguish between single sha and bitcoin's standard double */
struct sha256_double {
struct sha256 sha;
};
void sha256_double(struct sha256_double *shadouble, const void *p, size_t len);
void sha256_double_done(struct sha256_ctx *sha256, struct sha256_double *res);
#endif /* LIGHTNING_BITCOIN_SHADOUBLE_H */