30 lines
972 B
C
30 lines
972 B
C
#ifndef LIGHTNING_COMMON_INVOICE_PATH_ID_H
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#define LIGHTNING_COMMON_INVOICE_PATH_ID_H
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#include "config.h"
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#include <ccan/short_types/short_types.h>
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#include <ccan/tal/tal.h>
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struct secret;
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struct sha256;
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/* String to use with makesecret to get the invoice base secret */
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#define INVOICE_PATH_BASE_STRING "bolt12-invoice-base"
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/**
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* invoice_path_id: generate the "path_id" field for the tlv_encrypted_data_tlv
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* @ctx: tal context
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* @payment_hash: the invoice payment hash
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* @base_secret: the node-specific secret makesecret("bolt12-invoice-base")
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*
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* Receiving a blinded, encrypted tlv_encrypted_data_tlv containing
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* the correct path_id is how we know this blinded path is the correct
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* one for this invoice payment.
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*
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* It's exposed here as plugins may want to generate blinded paths.
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*/
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u8 *invoice_path_id(const tal_t *ctx,
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const struct secret *base_secret,
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const struct sha256 *payment_hash);
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#endif /* LIGHTNING_COMMON_INVOICE_PATH_ID_H */
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