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can you tell the name of encryption algorithm you are using. I actually wanted to check your algorithm correctness.

i found the error now but your algorithm is wrong.
In you keydecrypt method nums = numValues(toArray(fin)); should be out of the loop statement. This was causing the problem.
overall it should be...

I found errors in you algorithm. After you encrypt the word mississippi, the numeric cypher text would be 82, 30, 0, 0 each at nums[0], nums[1] and so on. When the turns comes of the third value that...