I've read the following two sentences within a beta protocol specification, which references ISO/IEC 7816-8 for PSO:HASH which already contains notions of a "partial hash".
The off-card entity is responsible of computing the intermediate hash over the first part of the data to be signed. The intermediate hash-code is transferred to the token by the PSO:HASH command together with the remaining part of the data, the token performs the last round hash computation.
As far as I know, there is no standard that describes how a "partial hash-code" or "intermediate hash-code" values can be transferred. Does anybody know of a standard way to represent a partial hash code as octet string?
Note that in the protocol specification a "bit counter" is also send after the "intermediate hash-code", plus some last bytes of the message itself.