Is there a tool that can do this!?
I used that picture just for easier explaining, software mention on picture doesn't do it!
It's a hectic time taking task their is no machine known to me that can do this. You have to do it manually by your self. document is in straight cut which can be easily reassemble then in it would be shredded in cross cut.
Time calculation to reassemble is t(n x (n-1)) as n = number of pieces, time (seconds) to compare matching on both paper cut sides. Result divided by 3600 gives you hours, divided by 24 you get days, divided by 365 (3 successing years, 4th counts with 366) gives you years.
After the fall of the Shah in Iran in 1979, the CIA shredded all of their secret documents prior to evacuating the American Embassy in Tehran.
The Iranian Intelligence Service gathered all of the paper, carefully bundled up into plastic bags by the CIA and put them in a draft proofed aircraft hangar to be re-assembled. But who to get to do this painstaking work?
They used Persian carpet weavers - people used to dealing with patterns in long strips.
It took them three months, but they restored each and every secret document that had been shredded.
It's my understanding that the requirement for cross-cut shredders came about because of this.
Information Security isn't always about electronic data.
Cheers,
JD.
There is also the story with shredded STASI documents, the lesson from that made high sec shredders produce strips about the size of nail clippings.