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Needed for creating/verifying signatures on bolt11 invoices. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
22 lines
605 B
C
22 lines
605 B
C
/* bech32 (thus bolt11) deal in 5-bit values */
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#ifndef LIGHTNING_COMMON_HASH_U5_H
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#define LIGHTNING_COMMON_HASH_U5_H
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#include "config.h"
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#include <ccan/crypto/sha256/sha256.h>
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#include <ccan/short_types/short_types.h>
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/* Type to annotate a 5 bit value. */
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typedef unsigned char u5;
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struct hash_u5 {
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u64 buf;
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unsigned int num_bits;
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struct sha256_ctx hash;
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};
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void hash_u5_init(struct hash_u5 *hu5, const char *hrp);
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void hash_u5(struct hash_u5 *hu5, const u5 *u5, size_t len);
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void hash_u5_done(struct hash_u5 *hu5, struct sha256 *res);
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#endif /* LIGHTNING_COMMON_HASH_U5_H */
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