I managed to crash the HSM by asking for point -1 (shachain_index has an
assert). Fail in this case, instead.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is a wrapper around shachain_get_hash, which converts the
commit_num to an index and returns a 'struct secret' rather than a
'struct sha256' (which is really an internal detail).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Often we only need a single secret, so it's clearer to have routines
to do just that. When we change to the lnd key scheme, there will be
no benefit in calculating them all together.
This also adds a test!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Well, it's generated by shachain, so technically it is a sha256, but
that's an internal detail. It's a secret.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
To avoid everything pulling in HTLCs stuff to the opening daemon, we
split the channel and commit_tx routines into initial_channel and
initial_commit_tx (no HTLC support) and move full HTLC supporting versions
into channeld.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell