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59efd160c1
Invoices are signed with our own key, but we use a transient payer_key with a tweak for invoice_requests (and refunds). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
33 lines
1.0 KiB
C
33 lines
1.0 KiB
C
#ifndef LIGHTNING_COMMON_BOLT12_MERKLE_H
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#define LIGHTNING_COMMON_BOLT12_MERKLE_H
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#include "config.h"
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#include <wire/bolt12_exp_wiregen.h>
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/**
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* merkle_tlv - bolt12-style merkle hash of this tlv minus signature fields
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* @fields: tal_arr of fields from tlv.
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* @merkle: returned merkle hash.
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*/
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void merkle_tlv(const struct tlv_field *fields, struct sha256 *merkle);
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/**
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* sighash_from_merkle - bolt12-style signature hash using this merkle root.
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* @messagename: message name, such as "offer".
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* @fieldname: field name, such as "recurrence_signature".
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* @merkle: the merkle root as calculated by merkle_tlv.
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* @sighash: the returned hash.
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*/
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void sighash_from_merkle(const char *messagename,
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const char *fieldname,
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const struct sha256 *merkle,
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struct sha256 *sighash);
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/**
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* payer_key_tweak - get the actual tweak to use for a payer_key
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*/
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void payer_key_tweak(const struct pubkey32 *bolt12,
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const u8 *publictweak, size_t publictweaklen,
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struct sha256 *tweak);
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#endif /* LIGHTNING_COMMON_BOLT12_MERKLE_H */
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