Module hash 

TypeIdentifier hash computation (XTypes 1.3 §7.3.1.2).

The EquivalenceHash (14 bytes) is formed from the first 14 bytes of the MD5 digest over the XCDR2-serialized TypeObject representation (XTypes 1.3 §7.3.1.2.1):

EquivalenceHash(T) := MD5(xcdr2_le_bytes(T))[0..14]

Cyclone DDS and Fast-DDS use MD5 — hence mandatory for live interop.

• For MinimalTypeObject T: EK_MINIMAL hash
• For CompleteTypeObject T: EK_COMPLETE hash

From the hash a TypeIdentifier of kind EK_MINIMAL resp. EK_COMPLETE is built — this is the “strongly-hashed” form of the TypeObject, as exchanged between peers via SEDP (PID_TYPE_INFORMATION) and the TypeLookup service.

Functions

complete_hash_input

The exact byte stream fed to MD5 for a CompleteTypeObject hash.

compute_complete_hash

Like compute_minimal_hash, only for CompleteTypeObject.

compute_hash

Computes the 14-byte EquivalenceHash of a TypeObject.

compute_minimal_hash

Like compute_hash, but directly over MinimalTypeObject (without the EquivalenceKind discriminator wrapper clone). Writes the EK_MINIMAL discriminator before the body itself.

hash_bytes

Raw hash function: MD5 + truncate to 14 bytes.

minimal_hash_input

The exact byte stream fed to MD5 for a MinimalTypeObject hash (XCDR2 DHEADER + EK + body). Exposed so conformance harnesses can byte-diff it against vendor TypeObject goldens.

to_hashed_type_identifier

Shortcut: builds a strongly-hashed TypeIdentifier from a TypeObject. Wraps compute_hash in the matching EquivalenceHash* TypeIdentifier variant depending on Minimal/Complete.