Module cbor 

In-house CBOR codec (RFC 8949) — TrustForge owns its codec layer; see docs/dependency-audit.md. Mirror of tools/tf-types-ts/src/core/cbor.ts.

Scope: exactly what the TrustForge wire formats need.

• Encoding is deterministic: smallest-width integer/length headers, definite lengths only, floats always emitted as 8-byte doubles. Map entries are emitted in the order provided — canonical key ordering is the caller’s contract (binary_format sorts JSON keys lexicographically before building the tree; see the determinism notes there). This module must stay byte-parity with the TS encoder over conformance/binary-format-vectors.yaml.
• Decoding is hardened for externally produced CBOR (WebAuthn attestation objects, COSE keys): depth-limited, length headers are validated against remaining input before any allocation, and indefinite-length items are accepted (CTAP1-era encoders emit them) but bounded by the same limits. Trailing bytes after the first value are ignored, matching the previous decoder.

Enums

CborError

Value

Functions

decode

Decode the first CBOR value in bytes. Trailing bytes are ignored, matching the replaced decoder’s behavior.

encode

from_json

Build a CBOR value from a JSON value. Object key order is preserved as-is — sort beforehand for canonical output.

to_json

Convert a decoded CBOR value back to JSON. Fails on shapes JSON cannot express (byte strings, non-text map keys, tags) — the typed wire bodies never contain them.