Lets you configure the cryptographic keychain used by your node. It is through this trousseau that your node can be identified and its answers authenticated, verified.
Every duniter node has an cryptopraphic keys trousseau, used by sign their transmited information. There are two duniter node types:
1. member nodes: whose keys trousseau match a membre's identity and it get involved in the blocks writting opperation.
2. mirror nodes: when their keys trousseau don't match any member's identity. They can not write any block but they are useful for the network resilence and for answering the client requests.
This keychain consists of a private key and a public key Ed25519.