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lightningd: allow --recover / recover JSON RPC to take mnemonic.

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In fact, you *must* use mnemonic to successfully recover a modern node!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: JSON-RPC: `recover` takes a 12-word mnemonic for nodes created by v25.12 or later.
This commit is contained in:
Rusty Russell
2026-01-13 13:19:19 +10:30
parent 4f5e5aad18
commit 779a478437
9 changed files with 126 additions and 66 deletions
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6
contrib/msggen/msggen/schema.json
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@@ -30382,7 +30382,9 @@
"description": [
"The **recover** RPC command wipes your node and restarts it with the `--recover` option. This is only permitted if the node is unused: no channels, no bitcoin addresses issued (you can use `check` to see if recovery is possible).",
"",
"*hsmsecret* is either a codex32 secret starting with \"cl1\" as returned by `lightning-hsmtool getcodexsecret`, or a raw 64 character hex string.",
"For nodes created with v25.12 or later, *hsmsecret* MUST be the 12-word mnemonic.",
"",
"For earlier nodes, *hsmsecret* is either a codex32 secret starting with \"cl1\" as returned by `lightning-hsmtool getcodexsecret`, or a raw 64 character hex string.",
"",
"NOTE: this command only currently works with the `sqlite3` database backend."
],
@@ -30395,7 +30397,7 @@
"hsmsecret": {
"type": "string",
"description": [
"Either a codex32 secret starting with `cl1` as returned by `lightning-hsmtool getcodexsecret`, or a raw 64 character hex string."
"Usually a 12-word mnemonic; but for old nodes either a codex32 secret starting with `cl1` as returned by `lightning-hsmtool getcodexsecret` or a raw 64 character hex string."
]
}
}