Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One-Time Pads from the Digits of Pi   I present a method for generating one-time pads from the digits of pi.
Computer code is given to generate such pads from passphrases in a method
having an extremely low probability (<10^-53) of a successful discovery of the
one-time pads by a brute-force attack. The advantages and disadvantages of this
method are discussed.

2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
18
The categories of this paper are: econ