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# The `subkey` program is a key management utility for Substrate-based blockchains. You can use the `subkey` program to perform the following tasks:
* Generate and inspect cryptographically-secure public and private key pairs.
* Restore keys from secret phrases and raw seeds.
* Sign and verify signatures on messages.
* Sign and verify signatures for encoded transactions.
* Derive hierarchical deterministic child key pairs.
* [Documentation](https://docs.substrate.io/reference/command-line-tools/subkey/)