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lightning-hsmtool -- Tool for working with software HSM secrets of lightningd
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=============================================================================
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SYNOPSIS
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--------
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```bash
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lightning-hsmtool method [ARGUMENTS]...
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```
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DESCRIPTION
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-----------
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**lightning-hsmtool** performs various operations on the `hsm_secret`
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file used by the software HSM component of **lightningd**.
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This can be used to encrypt and decrypt the `hsm_secret` file,
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as well as derive secrets used in channel commitments.
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METHODS
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-------
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**encrypt** *hsm\_secret* *password*
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Encrypt the `hsm_secret` file so that it can only be decrypted at
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**lightningd** startup.
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You must give the option **--encrypted-hsm** to **lightningd**.
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The password of the `hsm_secret` file will be asked whenever you
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start **lightningd**.
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**decrypt** *hsm\_secret* *password*
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Decrypt the `hsm_secret` file that was encrypted with the **encrypt**
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method.
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**dumpcommitments** *node\_id* *channel\_dbid* *depth* *hsm\_secret* \[*password*\]
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Show the per-commitment secret and point of up to *depth* commitments,
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of the specified channel with the specified peer,
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identified by the channel database index.
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Specify *password* if the `hsm_secret` is encrypted.
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**guesstoremote** *p2wpkh* *node\_id* *max\_channel\_dbid* *hsm\_secret* \[*password*\]
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Brute-force the private key to our funds from a remote unilateral close
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of a channel, in a case where we have lost all database data except for
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our `hsm_secret`.
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The peer must be the one to close the channel (and the funds will remain
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unrecoverable until the channel is closed).
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*max\_channel\_dbid* is your own guess on what the *channel\_dbid* was,
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or at least the maximum possible value,
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and is usually no greater than the number of channels that the node has
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ever had.
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Specify *password* if the `hsm_secret` is encrypted.
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BUGS
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----
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You should report bugs on our github issues page, and maybe submit a fix
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to gain our eternal gratitude!
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AUTHOR
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------
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ZmnSCPxj < <ZmnSCPxj@protonmail.com> > wrote the initial version of
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this man page, but many others did the hard work of actually implementing
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**lightning-hsmtool**.
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SEE ALSO
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--------
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lightningd(8), lightningd-config(5)
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RESOURCES
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---------
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Main web site: <https://github.com/ElementsProject/lightning>
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COPYING
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-------
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Note: the modules in the ccan/ directory have their own licenses, but
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the rest of the code is covered by the BSD-style MIT license.
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Main web site: <https://github.com/ElementsProject/lightning>
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