Hello all.
I will try to explain what I need and what I want to do.
I know a hash from a file "X". And I also know that this file "X" has data
always been appended at end periodically.
So, I want to only update the hash information of the file without the need to
read all the file again.
I know that I have only the previous hash from file before the update. So I
imagine that I need another way to initiate the message digest context, setting
up this as a "initial value" or something.
But... How can I set this previous hash information on a new MD context (really
isolated because will be done by another process)?
Thanks
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