| Changes |
| ======= |
| |
| Version 0.3 |
| ----------- |
| |
| - **Interest** |
| |
| + Remove ``Selectors`` element |
| + Add optional ``CanBePrefix`` element after Name |
| + Move optional ``MustBeFresh`` element after ``CanBePrefix`` |
| + Move optional ``ForwardingHint`` element after ``MustBeFresh`` (before ``Nonce``) |
| + Add optional ``HopLimit`` element |
| + Add optional ``Parameters`` element |
| |
| - **Data** |
| |
| + Make ``MetaInfo`` and ``Content`` elements optional |
| + Change semantics of omitted (or set to zero) ``FreshnessPeriod`` element: it cannot be used to satisfy |
| Interests with ``MustBeFresh`` |
| + Add optional ``SignatureNonce`` and ``Timestamp`` elements to ``SignatureInfo`` |
| |
| - **Name** |
| |
| + Lift restriction on name component types, allowing types in the range ``1`` - ``32767``. |
| + Correct definition of name URI encoding: disallow unescaped encoding of PLUS ``+`` and allow TILDE ``~``. |
| + Add ``ParametersSha256DigestComponent`` |
| |
| Version 0.2.1 |
| ------------- |
| |
| - Add definition of Link Object |
| |
| - **Interest** |
| |
| + Add default of leftmost child if ChildSelector element not present |
| + Add specification of ForwardingHint element |
| |
| - **Data** |
| |
| + Updated Content Store semantics for Data packets that do not carry FreshnessPeriod. |
| |
| ************************************************************ |
| |
| Version 0.2 |
| ----------- |
| |
| - **Name** |
| |
| + Allow zero-length name component |
| + Require implicit digest to be specified using ``ImplicitSha256Digest`` name component |
| |
| - **Signature** |
| |
| + Add spec for ``SignatureHmacWithSha256`` |
| |
| - **Interest** |
| |
| + Delete deprecated ``Scope`` guider |
| + Restrict Interest to have name with at least one name component |
| |
| - **Data** |
| |
| + Redirect ContentType number assignments to the `wiki page <https://redmine.named-data.net/projects/ndn-tlv/wiki/ContentType>`__ |
| |
| - **TLV-TYPE** |
| |
| + Reserve 800-1000 range for link protocol |
| |
| ************************************************************ |
| |
| Version 0.1.1 |
| ------------- |
| |
| - **Signature** |
| |
| + New ``SignatureSha256WithEcdsa`` signature type for Elliptic Curve Digital Signature Algorithm (ECDSA). |
| + ``KeyLocatorDigest`` renamed to ``KeyDigest``. The specification now explicitly allows KeyDigest to be a SHA256 of any type of the key. |
| + ``KeyLocator`` element is now defined to be optionally present in generic ``SignatureInfo`` element. |
| ``SignatureSha256WithRsa`` and ``SignatureSha256WithEcdsa`` still require ``KeyLocator`` to be always present. |
| |
| ************************************************************ |
| |
| Version 0.1 |
| ----------- |
| |
| - **General** |
| |
| + XML-based ccnb packet encoding is replaced by TLV encoding |
| |
| - **Name** |
| |
| + The name encoding is changed from binary XML to TLV format |
| + The discussions on naming conventions and the use of special markers inside NameComponents are removed from packet specification, and will be covered by a separate technical document |
| + Deprecated zero-length name component |
| |
| - **Interest Packet** |
| |
| + ``Nonce`` is changed from optional to required |
| + ``PublisherPublicKeyDigest`` is replaced by ``PublisherPublicKeyLocator`` |
| + ``AnswerOriginKind`` is simplified from 4bits to a 1-bit ``MustBeFresh`` |
| + ``FaceID`` has been removed |
| + ``InterestLifetime`` changes the unit to the number of milliseconds |
| + Removed Bloom Filter from Exclude |
| + Changed default semantics of staleness |
| |
| Specifically, NDN-TLV Interest without any selectors will bring any data that matches the name, and only when ``MustBeFresh`` selector is enabled it will try to honor freshness, specified in Data packets. |
| With Binary XML encoded Interests, the default behavior was to bring "fresh" data and return "stale" data only when ``AnswerOriginKind`` was set to 3. |
| |
| Application developers must be aware of this change, reexamine the Interest expression code, and enable ``MustBeFresh`` selector when necessary. |
| |
| - **Data Packet** |
| |
| + The structure of Data packet is changed: |
| |
| * ``Name``, ``MetaInfo``, ``Content``, ``Signature{SignatureInfo, SignatureValue}`` |
| |
| + ``SignedInfo`` is renamed to ``MetaInfo`` and its content is changed |
| + ``PublisherPublicKeyDigest`` and ``ExtOpt`` are removed. |
| + ``Timestamp`` is removed |
| + ``KeyLocator`` is moved to be inside the ``Signature`` (``SignatureInfo``) element |
| + Three content types, ENCR, GONE, and NACK are removed |
| + ``FreshnessSeconds`` is renamed to ``FreshnessPeriod`` and is expressed in units of milliseconds |
| |
| - **Signature** |
| |
| + ``Signature`` is moved to the end of Data packet. |
| + ``KeyLocator`` is moved to be a part of the ``SignatureInfo`` element, if it is applicable for the specific signature type. |
| |
| The rationale for the move is to make Signature (sequence of ``SignatureInfo`` and ``SignatureValue`` TLVs) self-contained and self-sufficient. |
| |
| + Signature type (or signing method information) is expressed as an assigned integer value (with no assumed default), rather than OID. |
| + Added support for hash-only "signature" |
| + The current specification does not define Merkle Hash Tree Aggregated Signatures, but it is expected that such (or similar) signatures will be defined in future version of this specification |