mirror of
https://github.com/ElementsProject/lightning.git
synced 2024-11-19 09:54:16 +01:00
595fbd2a19
The "path" is just a message to ourselves. This meets the minimal requirement for bolt12 invoices: that there be a blinded path (at least so we can use the path_id inside in place of "payment_secret"). We expose the method to make this path_id to a common routine: offers will need this for generating more sophisticated paths. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
30 lines
972 B
C
30 lines
972 B
C
#ifndef LIGHTNING_COMMON_INVOICE_PATH_ID_H
|
|
#define LIGHTNING_COMMON_INVOICE_PATH_ID_H
|
|
#include "config.h"
|
|
#include <ccan/short_types/short_types.h>
|
|
#include <ccan/tal/tal.h>
|
|
|
|
struct secret;
|
|
struct sha256;
|
|
|
|
/* String to use with makesecret to get the invoice base secret */
|
|
#define INVOICE_PATH_BASE_STRING "bolt12-invoice-base"
|
|
|
|
/**
|
|
* invoice_path_id: generate the "path_id" field for the tlv_encrypted_data_tlv
|
|
* @ctx: tal context
|
|
* @payment_hash: the invoice payment hash
|
|
* @base_secret: the node-specific secret makesecret("bolt12-invoice-base")
|
|
*
|
|
* Receiving a blinded, encrypted tlv_encrypted_data_tlv containing
|
|
* the correct path_id is how we know this blinded path is the correct
|
|
* one for this invoice payment.
|
|
*
|
|
* It's exposed here as plugins may want to generate blinded paths.
|
|
*/
|
|
u8 *invoice_path_id(const tal_t *ctx,
|
|
const struct secret *base_secret,
|
|
const struct sha256 *payment_hash);
|
|
|
|
#endif /* LIGHTNING_COMMON_INVOICE_PATH_ID_H */
|