Function hdk::hash::hash_header

pub fn hash_header(input: Header) -> ExternResult<HeaderHash>

Hash a Header into a HeaderHash.

hash_entry has more of a discussion around different hash types and how they are used within the HDK.

It is strongly recommended to use hash_header to calculate the hash rather than hand rolling an in-wasm solution. Any inconsistencies in serialization or hash handling will result in dangling references to things due to a “corrupt” hash.

Note that usually relevant HDK functions return a HeaderHashed or SignedHeaderHashed which already has associated methods to access the HeaderHash of the inner Header. In normal usage it is unlikely to be required to separately hash a Header like this.