FC_SignUpdate - process the next block of a multi-part signing operation.
- [in] session handle.
- [in] pointer to the next block of the data to be signed.
- [in] length of data block in bytes.
FC_SignUpdate starts or continues a multi-part signature operation. One or more blocks may be part of the signature. The signature for the entire message is returned by a call to FC_SignFinal.
A user must log into the token (to assume the NSS User role) before calling