need documentation on sha hashfunction

[Arnim Kreutzer]

hi there,   I need some documentation on the implementation of the sha hashfunction in eay library. difference between HASH_BLOCK_HOST_ORDER and HASH_BLOCK_DATA_ORDER? e.g. background: I have to add verbose functionality to the sha1 for a project at the university, but it's very hard to understand the implementation ...   thanx   arnim