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feat: identity export/import (yaw-key-backup-1)

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Portable encrypted identity backup compatible with the sister project's
format — argon2id KDF + nacl secretbox, peer ID visible in plaintext for
pre-import verification.

- crypto: ExportIdentity, ImportIdentity, SaveIdentity
- proto: export_identity / import_identity IPC commands + events
- ipc: export_identity returns encrypted blob; import_identity validates
  and decrypts (read-only — on-disk write requires daemon restart)
- netmgr: MasterIdentity() accessor
- daemon: --import-identity / --import-passphrase flags write identity.json
  and exit, enabling scripted account migration
- tests: roundtrip and wrong-passphrase rejection

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Fredrik Johansson
2026-06-22 21:44:48 +02:00
parent f1498697b6
commit b47f659b7d
7 changed files with 488 additions and 8 deletions
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11
internal/proto/proto.go
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@@ -216,10 +216,12 @@ const (
CmdJoinNetwork IpcMsgType = "join_network" // fields: network_name (plaintext)
CmdLeaveNetwork IpcMsgType = "leave_network"
CmdGetState IpcMsgType = "get_state"
CmdSendFile IpcMsgType = "send_file"
CmdSetShareDir IpcMsgType = "set_share_dir" // set per-network share directory at runtime
CmdSendFile IpcMsgType = "send_file"
CmdSetShareDir IpcMsgType = "set_share_dir" // set per-network share directory at runtime
CmdGenerateInvite IpcMsgType = "generate_invite"
CmdGetFileList IpcMsgType = "get_file_list"
CmdExportIdentity IpcMsgType = "export_identity" // returns encrypted backup blob
CmdImportIdentity IpcMsgType = "import_identity" // replaces identity from backup blob
// Events (daemon → UI)
EvtMessageReceived IpcMsgType = "message_received"
@@ -235,6 +237,8 @@ const (
EvtFileComplete IpcMsgType = "file_complete"
EvtNetworkJoined IpcMsgType = "network_joined"
EvtNetworkLeft IpcMsgType = "network_left"
EvtIdentityExported IpcMsgType = "identity_exported"
EvtIdentityImported IpcMsgType = "identity_imported"
)
// NetworkInfo summarises one joined network for state_snapshot and network_joined events.
@@ -284,4 +288,7 @@ type IpcMessage struct {
ErrorMessage string `json:"error_message,omitempty"`
InviteString string `json:"invite,omitempty"`
Files []FileEntry `json:"files,omitempty"`
// export_identity / import_identity
Passphrase string `json:"passphrase,omitempty"` // import only; never echoed back
Backup string `json:"backup,omitempty"` // JSON backup blob
}