Crate aitp_core 

Core types and primitives for the Agent Identity & Trust Protocol (AITP).

This crate is pure — no I/O, no crypto, no transport. It defines:

• The Aid newtype: a validated AITP Agent Identifier.
• The AitpEnvelope message wrapper.
• JSON canonicalization per RFC 8785 (jcs).
• Strict unpadded base64url codec (base64url).
• The Timestamp newtype for Unix-second timestamps.
• The ExtensionsMap type for forward-compatible extensions.
• The AitpError and ErrorCode taxonomy from RFC-AITP-0001.

Higher-level protocol crates (aitp-manifest, aitp-tct, aitp-handshake, aitp-delegation) build on these primitives.

Re-exports

pub use aid::Aid;

pub use aid::AidAlgorithm;

pub use aid::AidParseError;

pub use envelope::envelope_signing_digest;

pub use envelope::envelope_signing_input;

pub use envelope::AitpEnvelope;

pub use envelope::MessageType;

pub use envelope::Sender;

pub use error::AitpError;

pub use error::ErrorCode;

pub use extensions::ExtensionsMap;

pub use raw_url::RawUrl;

pub use time::Timestamp;

Modules

aid

AITP Agent Identifier (AID).

base64url

Strict unpadded base64url codec (RFC 4648 §5).

envelope

AITP message envelope (RFC-AITP-0001 §5).

error

AITP error codes from the registry.

extensions

Forward-compatible extension fields.

jcs

RFC 8785 JSON Canonicalization Scheme (JCS).

raw_url

RawUrl — a URL that preserves its on-the-wire byte form.

time

Unix-second timestamps with freshness checks.

Constants

AID_PUBKEY_IDENTIFIER_LEN

Length of an AID identifier component when method = pubkey (Ed25519 raw public key encoded as unpadded base64url).

DEFAULT_TIMESTAMP_TOLERANCE_SECS

Default timestamp tolerance for replay protection (300 seconds, ±).

ED25519_SIGNATURE_BASE64URL_LEN

Length of an Ed25519 signature encoded as unpadded base64url.

PROTOCOL_VERSION

Protocol version this crate implements. Carried as the version field on JCS-profile artifacts and as the ver private claim on compact-JWS portable trust artifacts (RFC-AITP-0001 §5.4.5).