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3b4a06f52b
common/onion is going to need to use this for the case where it finds a blinding seed inside the TLV. But how it does ecdh is daemon-specific. We already had this problem for devtools/gossipwith, which supplied a special hsm_do_ecdh(). This just makes it more general. So we create a generic ecdh() interface, with a specific implementation which subdaemons and lightningd can use. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
14 lines
424 B
C
14 lines
424 B
C
#ifndef LIGHTNING_COMMON_ECDH_H
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#define LIGHTNING_COMMON_ECDH_H
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#include "config.h"
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struct pubkey;
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struct secret;
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/* This function is implemented differently in various daemons and tools:
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* subdaemons need to talk to the HSM via hsm_fd, lightningd needs to use
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* its HSM interface, and tools can implement this directly. */
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void ecdh(const struct pubkey *point, struct secret *ss);
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#endif /* LIGHTNING_COMMON_ECDH_H */
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