Module identity 

User identity: Ed25519 keypair persisted to disk.

The keypair can be stored in two formats:

• Plaintext (identity.key) — raw protobuf bytes, no passphrase.
• Encrypted (identity.key.enc) — JSON envelope produced by Argon2id key-derivation + ChaCha20-Poly1305 symmetric encryption. Used when the user supplies --passphrase at bp login.

The encrypted format is automatically detected at load time. The plaintext format remains supported for backwards compatibility and for headless/CI environments.

Structs

EncryptedKeyFile

On-disk representation of a passphrase-protected keypair.

ExportedIdentity

Portable JSON bundle that carries a complete BillPouch identity.

Identity

In-memory identity: the loaded keypair and all derived or persisted metadata.

UserProfile

Persistent user metadata stored alongside the keypair.

Enums

ExportedKeyData

Key data carried inside an ExportedIdentity.

Functions

fingerprint

Human-readable fingerprint of a public key (hex-encoded SHA-256, first 16 bytes).

fingerprint_pubkey

Fingerprint of a public key (hex-encoded SHA-256[0..8]).