1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
############################################################################
#
# File: crypt.icn
#
# Subject: Program to encrypt file
#
# Authors: Phil Bewig and Phillip Lee Thomas
#
# Date: August 14, 1996
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# Do *not* use this in the face of competent cryptanalysis.
#
# Usage: [iconx] icrypt [key] < infile > outfile
#
############################################################################
#
# As written, uses UNIX-style console I/O.
#
############################################################################
procedure main(args)
local i, k, ky, l, con
local fin, fout, infile, outfile
if *args = 3 then {
ky := get(args)
infile := get(args)
outfile := get(args)
}
else {
writes("Enter password: ")
# Note - password is visible
ky := read()
writes("Enter input file: ")
infile := read()
writes("Enter output file: ")
outfile := read()
}
fin := open(infile, "ur")
fout := open(outfile,"uw")
i := 1
l := 0
k := []
every put(k, ord(!ky)) do
l +:= 1
while writes(fout, char(ixor(ord(reads(fin)), k[i]))) do {
i := (i % l) + 1
}
end
|
