Title: Decoding Procedure
Author: Ted Kaczynski
Notes: For a great video analysis and demonstration of the decryption procedure working see Let's Crack Zodiac #18 - The Unabomber's Codes. And if you're mad enough to want to try it out on a real journal of Ted's, see this journal of partially decrypted numbers.

    Code 1

      List of meanings

      Cypher

      Decoding Procedure

        Diagrams

        Example

    Code 2

      List of Meanings

      Cypher

        A1

      Pad

        B1

        B35

    Appendix

      Original FBI Transcript

      Other Images


Code 1

List of meanings

0 = FOR
1 = BE (all present tense forms, including am, is,are, etc.)
2 = BE (all past tense forms)
3 = BE (future tense, i.e., will be)
4 = THE
5 = A or AN
6 = HAVE (all present tense forms)
7 = HAVE (all past tense forms, i.e. had)
8 = HAVE (future tense)
9 = ED, or, when tagged onto the end of any verb, indicates the past tense, even if the past tense of that verb is not indicated by 11ed11 in normal English.
10 = tagged onto the end of any verb indicates the future tense of that verb.
11 = ING
12 = ER
13 = LY
14 = TION
15 = THERE
16 = THEN
17 = AND
18 = BUT
19 = OR
20 = TO
21 = FROM
22 = TOWARD
23 = OF
24 = IN
25 = OUT
26 = NO
27 = BIG
28 = SMALL
29 = I, ME, MINE, MY
30 = YOU, YOUR, YOURS
31 = HE, SHE, IT, HIM, HER, HIS, HERS, ITS.
32 = WORD-SPACER
33 = WORD-SPACER
34 = PERIOD
35 = COMMA
36 = QUESTION MARK
37 = PARENTHESIS (
38 = PARENTHESIS)
39 = A
40 = A
41 = B
42 = C
43 = D
44 = D
45 = E
46 = E
47 = E
48 = F
49 = G
50 = H
51 = I
52 = J
53 = K
54 = L
55 = M
56 = N
57 = 0
58 = P
59 = Q
60 = R
61 = R
62 = S
63 = S
64 = T
65 = T
66 = U
67 = V
68 = W
69 = X
70 = Y
71 = Z
72 = delete
73 = delete
74 = CH
75 = SH
76 = TH (UNVOICED)
77 = TH (VOICED)
78 = delete
79 = OM
80 = PLOD
81 = ILL
82 = ETONA
83 = " (quotation marks)
84 = WHEN
85 = WHERE
86 = WHAT
87 = ST
88 = THAT
89 = delete


Cypher

4 7 7 0 1 3 81 22 11 13 13 44 41 6 16 22 21 19 17 28 30 29 30 31 31 42 43 2 5 7 6 9 12 15 18 65 71 77 84 83 80 32
47 19 48 45 49 51 62 74 79 16 50 59 41 63 61 64 78 1 76 0 37 39 40 60 67 70 4 10 3 52 55 54 56 69 68 38 31 34 36 50 35 5
24 23 27 4 11 11 2 16 19 21 30 1 41 1 52 1 0 18 40 51 6 68 84 80 2 19 23 23 58 76 67 8 8 81 17 36 63 83 79 79 70 71
62 4 7 68 1 3 54 45 55 9 17 18 1 3 12 14 71 33 8 54 16 9 40 57 6 25 23 50 26 40 11 12 12 60 15 35 55 80 77 21 57 64
1 3 2 4 3 5 4 6 11 7 61 63 62 64 63 65 0 10 14 29 39 43 34 3 30 31 65 70 76 74 73 2 16 83 9 9 8 27 5 75 1 8
61 54 38 21 25 69 6 79 4 0 6 46 12 56 8 7 1 1 2 3 5 8 13 18 26 39 57 83 2 1 3 4 7 11 18 25 36 54 79 80 1 5
4 83 79 80 1 5 6 11 56 2 5 7 2 9 11 6 5 3 4 0 2 1 8 8 9 7 8 1 0 6 7 5 42 19 13 15 8 1 0 3 76 72
84 1 4 72 9 6 8 68 43 32 34 39 37 35 5 4 70 66 4 62 34 28 6 22 16 8 8 0 16 24 40 64 82 60 54 39 71 41 31 6 0 6
12 18 30 48 78 30 48 18 30 12 18 6 12 6 6 0 9 9 20 48 81 49 27 17 13 23 22 42 33 63 63 2 5 1 7 0 15 3 8 3 4 9
1 2 68 61 47 74 64 68 81 80 5 45 52 67 68 70 20 11 16 14 2 25 61 71 41 24 31 42 48 46 54 29 7 9 8 66 54 45 44 72 28 3
31 34 3 37 40 4 60 62 62 9 8 0 15 20 84 81 81 0 1 1 0 5 9 12 7 8 3 2 6 13 48 58 63 57 81 12 14 21 35 56 42 21
14 35 49 7 1 4 9 16 25 35 48 63 80 79 62 47 34 24 15 83 3 0 7 1 3 6 10 16 22 40 50 60 70 80 7 8 9 2 3 4 1 5
6 5 15 25 35 45 55 65 75 1 7 8 0 1 2 2 9 19 29 39 49 59 69 79 77 67 56 46 36 26 15 16 13 1 2 3 64 50 54 52 8 11
23 28 38 32 33 44 17 29 49 72 73 1 7 9 7 0 21 66 18 49 49 17 14 4 7 7 0 1 81 3 22 11 13 13 44 41 16 6 22 21 17 30
30 31 43 42 2 7 9 15 65 77 83 32 47 45 62 16 41 64 1 0 39 67 10 55 69 31 36 35 19 49 74 50 63 78 0 40 67 4 3 55 69 31
50 35 13 47 43 5 8 5 19 58 42 46 67 78 68 0 80 1 22 20 4 71 72 11 2 0 8 5 9 4 2 7 3 6 1 2 2 0 3 61 38 25
6 4 6 12 8 1 3 13 39 2 4 18 36 79 5 84 72 8 32 37 5 70 4 34 6 16 0 40 60 39 41 6 6 2 47 68 34 37 5 70 4 28
1 2 5 6 61 64 65 14 39 3 31 76 73 83 9 5 55 82 71 75 63 65 34 38 35 29 66 75 76 1 1 2 1 3 0 5 10 30 20 40 18 7
4 24 74 39 8 26 49 28 21 41 31 51 71 61 10 15 14 64 18 54 3 1 2 0 7 38 19 83 2 84 1 9 24 24 16 80 2 1 4 14 21 24
4 24 47 62 1 4 61 84 17 6 73 84 66 8 10 48 50 4 6 40 42 76 78 17 66 11 60 5 54 0 49 5 54 10 59 15 64 20 69 25 74 30
79 4 53 22 71 40 4 27 8 31 12 35 16 39 20 18 19 84 81 0 5 5 10 15 15 20 17 17 24 31 35 36 41 44 48 52 56 61 66 72 78 1
8 4 12 16 17 18 19 25 26 28 30 32 35 7 0 7 20 9 11 6 80 26 5 5 16 1 7 48 81 71 72 27 16 7 23 6 29 11 40 4 44 8
65 26 37 50 0 19 82 5 26 37 50 1 5 2 3 7 1 0 6 8 9 9 6 11 27 14 8 13 21 25 28 35 45 53 62 70 78 1 16 17 24 32
38 43 54 61 70 77 84 13 25 29 36 47 56 67 78 6 61 70 12 79 16 2 18 34 0 1 2 1 9^ 1 7 7 9 19 8 20 50 45 58 8 60 3
0 18 3 42 45 71 8 59 1 8 4 1 1 4 9 2 1 0 6 6 15 84 18 12 19 84 1 9 8 4 19 4 2 22 13 31 3 12 25 1 1 28
3 1 2 22 47 69 34 1 15 8 21 37 52 51 43 10 25 67 65 3 7 1 2 7 3 4 1 3 2 8 9 37 12 73 41 32 4 71 27 34 13 28
4 21 1 20 2 27 58 11 14 4 48 73 18 71 37 34 3 37 2 7 11 22 21 44 46 49 31 16 72 69 8 56 73 1 53 26 79 46 0 3 71
7 23 24 2 22 47 7 54 4 2 13 1 72 11 7 36 18 1 5 6 4 12 15 29 27 30 20 47 8 37 75 8 45 41 19 2 21 13 34 2 36 54
24 44 27 45 3 42 72 4 76 12 4 47 1 7 64 1 16 7 1 7 10 6 15 19 19 11 41 64 32 72 48 28 11 72 68 83 5 0 12 12 84 7
31 29 51 50 69 5 64 19 16 35 9 44 71 4 58 35 2 8 6 9 9 14 8 11 9 61 35 5 3 46 17 56 41 1 2 6 68 13 81 84 75 47
56 73 53 0 77 19 8 11 16 46 62 3 65 3 6 0 14 15 7 9 1 11 8 2 31 29 27 67 2 11 35 37 67 81 0 18 64 3 34 37 9 46
0 2 1 82 6 27 8 8 0 35 44 79 6 1 52 36 83 23 13 11 10 3 7 30 6 58 57 44 75 21 4 44 80 6 50 4 2 16 19 47 66 1
55 1 54 82 35 46 24 27 16 11 42 8 50 2 52 29 79 22 12 20 11 14 1 23 51 10 83 59 14 33 23 1 83 42 60 1 9 64 84 7 48 55
65 0 4 62 41 32 32 51 26 24 2 77 79 11 0 7 4 23 30 14 21 17 8 7 47 79 16 7 59 21 79 2 8 55 1 7 39 45 5 44 75 49
7 1 5 3 56 78 67 78 66 53 40 13 20 33 53 22 75 50 25 35 18 31 9 30 4 79 7 48 2 40 81 34 52 0 2 25 42 2 35 55 4 18
5 1 9 8 2 7 0 8 2 0 79 64 15 30 45 29 79 39 56 35 39 16 17 37 51 0 11 19 39 76 62 3 1 5 14 3 3 9 20 1 23 2
6 12 14 11 74 78 74 2 40 53 84 33 5 28 50 78 64 0 53 70 25 47 41 67 55 79 18 67 41 11 19 37 53 5 16 28 45 11 55 56 27 20
11 22 13 19 76 82 4 40 42 6 48 35 45 2 43 80 56 2 14 41 64 78 1 55 4 2 29 5 80 5 81 40 54 10 30 31 47 20 75 57 50 22
17 34 9 1 0 7 80 11 82 59 40 68 52 78 7 71 13 84 66 7 11 68 0 83 20 13 46 3 24 8 21 59 26 58 76 58 75 0 84 70 15 1
47 56 22 82 11 3 84 3 14 65 3 54 7 6 80 9 81 28 71 6 69 55 3 22 42 51 83 29 5 61 6 36 8 7 17 23 75 0 10 37 1 4
54 23 31 83 83 9 2 14 1 71 43 8 13 84 22 19 16 3 42 13 55 17 42 55 80 7 53 13 82 65 62 66 83 75 3 75 84 80 52 2 58 3
17 9 8 0 4 5 28 17 15 7 15 62 20 31 5 44 26 25 1 70 20 64 45 5 15 82 18 7 71 4 74 8 20 26 14 84 1 0 3 62 42 5
53 33 20 13 7 14 18 4 16 78 75 3 33 7 60 63 67 45 41 4 78 81 1 22 7 31 2 9 66 13 0 6 29 2 82 81 52 5 7 45 30 9
65 63 2 61 42 19 46 23 3 5 1 64 12 38 65 0 1 9 71 66 5 11 46 27 22 9 20 16 8 17 74 14 49 28 82 52 53 5 10 35 72 8
0 66 62 4 58 50 8 27 80 4 76 67 0 5 5 63 50 54 1 82 73 9 15 24 27 29 82 21 17 80 43 51 78 30 0 58 12 55 65 81 19 0
68 1 46 77 7 31 30 50 83 0 79 8 12 5 64 63 51 67 72 84 16 2 14 26 78 44 29 37 25 57 40 65 3 58 82 17 65 60 75 27 18 7
78 8 70 43 27 16 11 5 6 4 8 17 12 10 8 6 9 8 1 3 17 24 1 23 41 64 71 58 42 2 83 33 58 11 29 75 77 0 46 18 37 7
3 9 50 30 46 61 5 55 83 4 19 17 74 15 72 76 80 75 73 19 33 27 40 3 37 67 68 19 67 59 36 1 61 69 14 5 75 60 36 45 55 0
81 17 57 73 74 77 16 60 12 36 27 34 23 78 89 82 76 76 74 21 28 51 44 64 4 60 12 21 38 69 59 72 84 80 43 80 34 60 82 63 62 6
84 23 20 66 82 71 21 77 16 40 6 41 0 1 1 9 3 9 54 40 61 47 84 71 8 7 1 27 18 42 2 73 0 48 57 3 39 1 4 62 6 1
9 40 77 4 6 1 37 0 28 76 33 78 23 83 4 79 79 7 68 0 12 5 75 2 19 20 11 9 24 0 83 8 84 72 37 83 73 61 0 12 68 11
60 63 3 70 24 72 58 77 44 74 39 24 84 84 82 8 61 16 12 59 9 52 6 26 27 38 9 18 79 54 63 59 10 40 84 74 65 62 18 69 74 8
69 0 80 74 30 73 4 61 72 1 72 47 67 1 86 68 15 12 80 59 1 8 81 28 49 58 42 36 29 7 12 8 4 12 16 28 44 72 5 81 18 2
3 63 83 1 54 2 62 4 3 75 0 71 4 2 0 76 24 9 68 8 10 3 55 54 76 60 51 83 56 47 9 11 15 77 3 43 53 72 4 31 21 2


Decoding Procedure

for code used in some of my journals

The coded message will consist of a sequence of numbers, ranging from 0 to 99. Spaces, like gaps between words, may occur in the sequence; but the spaces do not actually represent gaps between words; they are introduced only to mislead anyone trying to break the code.

The meaning of a given number will depend on its position in the sequence; hence the following remarks are important. In a given series of writings, it may be that only a small part of the material is in code -- the rest will be in ordinary English. For decoding purposes, the English passages are simply ignored; all of the coded passages are regarded as forming a single sequence. (See example below.) Such a sequence will hereinafter be referred to as a coded section. All the coded passages that appear in any one notebook are to be treated as£ single coded section. In any bundle of consecutively numbered sheets of paper, all coded passages are to be treated as single coded section. But when you shift from one notebook to another (or from one bundle of sheets to another) you begin a new coded section.

To decode any coded section, proceed as follows.

  1. Circle the third number that appears in the section; this number has a special significance.

  2. Delete all punctuation marks; these have no meaning and are introduced only to confuse code-breakers.

  3. Delete all of the numbers from 90 through 99 (inclusive) wherever they appear. These, too, are meaningless and are introduced only for confusion.

  4. We shall describe as follows a sequence of numbers, which we shall call the unscramblingsequence .

Find the sheet which is marked "Code numbers" on the back. The front of this sheet bears a rectangular array of numbers. Set this sheet in front of you so that the numbers are shown right-side-up.

The numbers are in rows running from left to right. Refer to the number that you circled in Step 1. Starting at the top of the sheet, count down until you reach the row that corresponds to the circled number; for instance, if the circled number is 5, you go to the fifth row from the top.

4(a). Now delete the circled number from the section you are decoding.

4(b). The first number of the unscrambling sequence is the number at the left end of the row that you have gone to. The rest of the unscrambling sequence is obtained by reading the row from left to right; then read the next row from left to right; then the next row, etc. In other words, you read off the numbers in the same order that you read the words in a book. When you reach the end of the page, go to the upper right hand corner of the sheet and read down the column. Then take the next column to the left and read down that; then the next column, and so forth until the page is finished. then go to the upper left hand corner and read along the diagonals from left to right and down to up. When the page is finished, go to the upper right hand corner and read along the diagonals from left to right and up to down. When all that is finished, start again at the upper left hand corner and again read as you read a book. Thus the cycle will repeat itself.

Diagrams

ORDER OF THE UNSCRAMBLING SEQUENCE

(Assume Circled number is 5)

t-k-ted-kaczynski-s-decoding-process-guide-37.jpg
t-k-ted-kaczynski-s-decoding-process-guide-27.jpg

4(c). Now to proceed with the decoding. After making all the deletions described above from our coded section, we are left with a sequence of numbers that constitutes a coded message. To the first number of this given sequence, add the first number of the unscrambling sequence; to the second number of the given sequence, add the second number of the unscrambling sequence; to the third number of the given sequence, add the third number of the unscrambling sequence; and so on down the line.

Whenever the addition gives a number greater than 89, subtract 90, so that you end up with a number between 0 and 89. (See example.)

  1. Step 4(c) gives us a new sequence of numbers. For each of these numbers, substitute the letter or letters given in the list of meanings.

  2. Remarks: "Word Spacer" of course indicates the separation between 2 words. Two different numbers are used as word-spacers, to confuse would-be code-breakers. Also to confuse codebreakers: sometimes words are permitted to run together, without any spacer between them; sometimes words are intentionally misspelled; sometimes foreign words are used; and sometimes meaningless nonsense words are included.

Numbers marked "delete" on the list of meanings are to be crossed off as meaningless. (After the unscrambling sequence has been applied.)


Example

66, 54, 7, 91, 73, 83 , 63, 40, 55, 32, 74,
44 , 27, 22 , 47, 48, 88, 27. 54, 98, 64, 56 —
63, 56, 60, 48, 24 , 27, 24. Outside the
CTA Station, 4, 90, 32, 21, 41, 34, 22, 14, 14 /
40, 53, 37, 45, 60, 29, 53, 81,
59, 8, 47, 66, 24, 25, 25, 64, 14, 34, 20, 5, 86,
28, 61, 38, 73 56, 25, 61, 8, 29, 36, 31, 73, 26,
29, 31, 16, 68, 3 , 78, 86, 3 , 85, 27
18, 21, 33, 5, 34, 32, 17, 15, 86, 16, 45, 24, 88, 47,
20, 13, 26, 32 / 51, 27, 31, 24, 25, 52, 41.
86, 1, 46, 34, 49, 9, 33, 15, 27, 38, 27,
27, 6, 26, 41, 4 6, 4 2, 31, 50, 44, 63, 39, 61, 86, 63,
72, 24, 74, 82, 75 , 60, 58, 19, 14, 64, 73,
12, 34, 51, 47 , 68, 7, , 84, 76,
19, 32, 70, 83 , 59, 73, 78, 16, 49 43, 49, 4,
46, 76, 80, 50, 1, 30, 12, 17, 46, 10, 12, 10, 63, 29,
67, 48, 49, 44, 19. But yesterday I ate too
much. Bla Bla Bla.... 9, 38, 52, 66,
32, 55, 56, 65, 99, 71, 15, 41, 26, 80, 36, 54, 72,
57, 9, 88, 74, 36, 42, 28, 27, 26, 19, 67, 68,
12, 75, 6, 12, 39, 38, 49, 68, 35, 37, 87, 84, 84, 54,
56, 63, 61, 88, 26, 57, 64, 65, 32, 35,
39, 53, 23, 81, 16, 41, 26, 11, 76, 56.

To decode the foregoing: First we circle the third number, delete all passages in ordinary English, delete all punctuation marks and all numbers from 90 through 99. Marking the position of the deleted English passages with ‖, we now have:

65, 54, (7), 73, 83, 63, 40, 55, 32, 74, 44, 27, 22, 47, 48, 88, 27, 54, 64, 56, 63, 56, 60, 48, 24, 27, 24, ‖, 4, 90, 32, 21, 41, 34, 22, 14, 14, 40, 53, 37, 45, 60, 29, 53, 81, 59, 8, 47, 66, 24, 25, 25, 64, 14, 34, 20, 5, 86, 28, 61, 38, 73, 56, 25, 61, 8, 29, 36, 31, 73, 26, 29, 31, 16, 68, 3, 78, 86, 3, 85, 27, 18, 21, 33, 5, 34, 32, 17, 15, 86, 16, 45, 24, 88, 47, 70, 20, 13, 26, 32, 51, 27, 31, 24, 25, 52, 41, 86, 1, 46, 34, 49, 9, 33, 15, 27, 38, 27, 27, 6, 26, 41, 46, 42, 31, 50, 44, 63, 39, 61, 86, 63, 72, 24 74, 82, 75, 60, 58, 19, 14, 64, 73, 12, 34, 51, 47, 68, 7, 84, 76, 19, 32, 70, 83, 59, 73, 78, 16, 49, 43, 49, 4, 46, 76, 80, 50, 1, 30, 12, 17, 46 10, 12, 10, 63, 29, 67, 48, 49, 44, 19, ‖, 9, 38, 52, 66, 32, 55, 56, 65, 71, 15, 41, 26, 80, 36, 54, 72, 57, 9, 88, 74, 36, 42, 28, 27, 26, 19 67, 68, 12, 75, 6, 12, 39, 38, 49, 68, 35, 37, 87, 84, 84, 54, 56, 63, 61, 88, 26, 57, 64, 65, 32, 35, 39, 53, 23, 81, 16, 41, 26, 11, 76, 56.

Since 7 is circled, the unscrambling sequence starts on the 7th row of the sheet of code numbers. We now cross off this number 7. Next, we write the first few lines of the coded section with the corresponding numbers of the unscrambling sequence underneath for convenience in adding. Performing the additions and referring to the list of meanings, we get this:


66, 54, 73, 83, 63, 40, 55, 32, 74, 44, 27, 22, 47, 48
4 83 79 80 1 5 6 11 56 2 5 7 2 9
70 137 152 163 64 45 61 43 130 46 32 29 49 57
-90 -90 -90 -90
47 62 73 40
Y E S T E R D A E / I
MY
G O

88, 27, 54, 64, 56, 63, 56, 60, 48, 24, 27, 24, 4, 32, 21, 41, 34
11 6 5 3 4 0 2 1 8 8 9 7 8 1 0 6 7
9 33 59 67 60 63 58 61 56 32 36 31 12 33 21 47 41
PAST
TENSE
/ Q V R S P R N / ? HE
SHE
IT
ER / FROM E B

27, 14, 14, 40, 53, 37, 45, 60, 29, 53, 81, 59 8, 47, 66, 24
5 42 49 43 15 8 1 0 3 76 72 84 1 4 72 9
32 56 33 53 68 45 46 60 32 39 63 53 9 51 48 33
/ N / K W E E R / A S K ED I F /

As mentioned in the instructions, an occasional nonsense word is to be expected, but here the words before and after the nonsense do not fit together so as to make sense, so something is wrong. Having checked our decoding work and found it correct, we conclude that the person who encoded the message made some error. Now, if a letter has been unintentionally omitted in the coded message, that would throw the unscrambling sequence out of phase with the coded section. By experimenting, we find that this has actually happened, and we correct it:


66 54 73 83 63 40 55 32 74 44 27 22 47
4 83 79 80 1 5 6 11 56 2 5 7 2
70 47 62 73 64 45 61 43 40 46 32 29 49
Y E S T E R D A E / I G

48 88 27 ? 54 64 56 63 56 60 48 24 27 24
9 1 6 5 3 4 0 2 1 8 8 9 7 8
57 9 33 ? 57 68 56 65 57 68 56 33 34 32
O PAST
TENSE
/ O W N T O W N / . /

4 32 21 41 34 22 14 14 40 53 37 45 60 29 53
1 0 6 7 5 42 19 13 15 8 1 0 3 76 72
5 32 27 48 39 64 33 27 55 61 38 45 63 15 35
A
AN
/ BIG F A T / BIG M R ) E S THERE ,

The missing letter was evidently D, so the passage translates as: "YESTERDAY I WENT DOWNTOWN. A BIG FAT. . . " and then it degenerates into prolonged nonsense. We conjecture that the unscrambling sequence has again gotten out of phase with the coded section. By experimenting, we correct it as follows:


4 32 21 4l 34 22 14 (14) [superfluous - delete] 40 53 37 45 60 29
1 0 6 7 5 42 19 13 15 8 1 0 3
A / BIG F A T / K W E E R /

53 81 59 8 47 66 24 25 25 64 14 34 20 5 86 28
76 72 84 1 4 72 9 6 8 68 43 32 34 39 37 35
39 63 53 9 51 48 33 31 33 42 57 66 54 44 33 63
A S K ED I F / HE
SHE
IT
/ C O U L D / S

61 38 73 56 25 61 8 29 36 31 73 26 29 31 16 68
5 4 70 66 4 62 34 28 6 22 16 8 8 0 16 24
66 42 53 32 29 33 42 57 42 53 89 34 37 31 32 2
U C K / ME
MY
/ C O C K . ( HE
SHE
IT
/ WAS
WERE

3 78 86 3 85 27 18 21 33 5 34 32 17 15 86 16
40 64 82 60 54 39 71 41 31 6 0 6 12 18 30 48
43 52 78 63 49 66 89 62 64 11 34 38 29 33 26 64
D J S G U S T ING . ) I
MY
/ NO T

Correcting an obvious error, we translate this as "|| A BIG FAT QUEER ASKED IF HE COULD SUCK MY COCK. (HE WAS DISGUSTING.)
I NOT ..."

Continuing in the same way, we get:


17 15 86 16 45 24 88 47 70 20 13 26 32 51 27
12 18 30 48 78 30 48 18 30 12 18 6 12 6 6
29 33 26 64 33 54 46 65 10 32 31 32 44 57 33
I / NO T / L E T FUTURE
TENSE
/ HIM
HER
IT
/ D O /

31 24 25 52 41 86 1 46 34 49 9 33 15 27 38
0 9 9 20 48 81 49 27 17 13 23 22 42 33 63
31 33 34 72 89 77 50 73 51 62 32 55 57 60 11
IT
HIM
HER
/ . TH H I S / M O R ING

27 27 6 26 41 46 42 31 50 44 63 39 61 86
63 2 5 1 7 0 15 3 8 3 4 9 1 2
0 29 11 27 48 46 57 34 58 47 67 48 62 88
FOR ME
MY
ING BIG F E O . P E V F S THAT

Correcting one obvious error, we translate this as: "I WILL NOT LET HIM DO IT. THIS ..." and prolonged nonsense. Finding by experiment that another letter has been left out, putting the unscrambling sequence out of phase, we correct this as:


86 1 46 34 49 9 33 15 27 ? 38 27 27 6 26 41
81 49 27 17 13 23 22 42 33 63 63 2 5 1 7 0
77 50 73 51 62 32 55 57 60 ? 11 29 32 7 33 41
TH H I S / M O R .. ING I
MY
/ HAD / B

46 42 31 50 44 63 39 61 86 63 72 24 74 82 75 60 58
15 3 8 3 4 9 1 2 68 61 47 74 64 68 81 80 5
61 45 39 53 48 72 40 63 64 34 29 8 48 60 66 50 63
R E A K F A S T . I
MY
WILL
HAVE
F R U H S

19 14 64 73 12 34 51 47 68 7 84 76 19 32 70 83 59
45 52 67 68 70 20 11 16 14 2 25 61 71 4124 31 42
64 66 41 51 82 54 62 63 82 9 19 47 0 73 4 24 11
T U B I ETONA L S S ETONA ED OR E FOR THE IN ING

73 78 16 49 43 49 4 46 76 80 50 1 30 12 17 46 10 12
48 46 54 29 7 9 8 66 54 45 44 72 28 3 31 34 3 37
31 34 70 78 50 58 12 22 40 35 4 73 58 15 48 80 13 49
HE
SHE
. Y H P ER TOWARD A , THE P THERE F PLOD LY G

The missing letter is evidently N, so this translates as: "THIS MORNING I HAD BREAK¬FAST. I WILL HAVE | and again we degenerate into nonsense. By experimenting, we find that the encoder has omitted a number of the unscrambling sequence, again throwing things out of phase. Correcting, we get:


72 24 74 82 75 60 58 19 14 ? 64 73 12 34
47 74 64 68 81 80 5 45 52 67 68 70 20 11
29 8 48 60 66 50 63 64 66 ? 42 53 32 45
I WILL HAVE F R U H S T U C K / E

51 47 68 7 84 76 19 32 70 83 59 73 78 16 49
16 14 2 25 61 71 41 24 31 42 48 46 54 29 7
67 61 70 32 55 57 60 56 11 35 17 29 42 45 56
V R Y / M 0 R N ING , AND I
MY
C
~
E N

43 49 4 46 76 80 50 1 30 12 17 46 10 12 10
9 8 66 54 45 44 72 28 3 31 34 3 37 40 4
52 57 70 10 31 34 32 29 33 43 51 49 47 52 14
J O Y FUTURE
TENSE
HIM
HER
IT
. / I
MY
/ D I G E J
~
TION

63 29 67 48 49 44 19 9 38 52 66 32 55
60 62 62 9 8 0 15 20 84 81 81 0 1
33 1 39 57 57 A 44 34 29 32 43 57 32 56
/ IS A
~
O O D . I
MY
/ D O / N

If the decoder knows that "Fruhstuck" is German for breakfast, and if he observes that with each of the 3 letters underlined with ~ the encoder has made an error in the first digit of the number, he can now read: "I WILL HAVE BREAKFAST EVERY MORNING, AND I WILL ENJOY IT. MY DIGESTION IS GOOD. || I DO ..."

Continuing in the same way, we get:


9 38 52 66 32 55 56 65 71 15 41 26 80
20 84 81 81 0 1 1 0 5 9 12 7 8
29 32 43 57 32 56 57 65 76 24 53 33 88
I / D O / N O T TH IN K / THAT

36 54 72 57 9 88 74 36 42 28 27 26 19 67 68
3 2 6 13 48 58 63 57 81 12 14 21 35 56 42
39 56 78 70 57 56 47 3 33 40 41 47 54 33 20
A N Y O N E WILL BE / A B E L / TO

12 75 6 12 39 38 49 68 35 37 87 84 84 54
21 14 35 49 7 1 4 9 16 25 35 48 63 80
33 89 41 61 46 39 53 77 51 62 32 42 57 44
/ B R E A K TH I S / C O D

56 63 61 88 26 57 64 65 32 35 39 53
79 62 47 34 24 15 83 3 0 7 1 3
45 35 18 32 50 72 57 68 32 42 40 56
E , BUT / H O W / C A N

23 81 16 41 26 11 76 56
6 10 16 22 40 50 60 70
29 1 32 63 66 61 46 36
I
MY
BE
IS
etc.
/ S U R E ?

Putting it all together, our coded section now translates as: "YESTERDAY I WENT DOWNTOWN.‖ A BIG FAT QUEER ASKED IF HE COULD SUCK MY COCK. (HE WAS DISGUSTING.) I WILL NOT LET HIM DO IT. THIS MORNING I HAD BREAKFAST. I WILL HAVE BREAKFAST EVERY MORNING, AND I WILL ENJOY IT. MY DIGESTION IS GOOD. ‖ I DO NOT THINK THAT ANYONE WILL BE ABLE TO BREAK THIS CODE, BUT HOW CAN I BE SURE?"

Now we re-insert the previously deleted passages of ordinary English at the places marked || , to get the complete message:

"YESTERDAY I WENT DOWNTOWN. OUTSIDE THE OTA STATION, A BIG FAT QUEER ASKED IF HE COULD SUCK MY COCK. (HE WAS DISGUSTING.) I WILL NOT LET HIM DO IT. THIS MORNING I HAD BREAKFAST. I WILL HAVE BREAKFAST EVERY MORNING, AND I WILL ENJOY IT. MY DIGESTION IS GOOD. BUT YESTERDAY I ATE TOO MUCH. BLA BLA BLA .... I DO NOT THINK THAT ANYONE WILL BE ABLE TO BREAK THIS CODE, BUT HOW CAN I BE SURE?"


This example was riddled with errors, but that is good, because it illustrates the process of correcting the problem when the unscrambling sequence gets out of phase with the coded section. Hopefully, most messages to be decoded will not have so many errors. But, as we have just seen, it should be possible (with effort) to decode the section even when many errors appear. If serious problems arise, a mathematical mind should be able to help -- consult the math dept, of some university.


Code 2

t-k-ted-kaczynski-s-decoding-process-guide-31.jpg


List of Meanings

0 = 0
1 = 1
2 = 2
3 = 3
4 = 4
5 = 5
6 = 6
7 = 7
8 = 8
9 = 9
10 = A
11 = B
12 = C
13 = D
14 = E
15 = F
16 = G
17 = H
18 = I
19 = J
20 = K
21 = L
22 = M
23 = N
24 = O
25 = P
26 = Q
27 = R
28 = S
29 = T
30 = U
31 = V
32 = W
33 = X
34 = Y
35 = Z
36 = period
37 = comma
38 = question mark
39 = parenthesis (
40 = parenthesis )
41 = quotaatiion marks
42 = word-spacer
43 = ABOUT
44 = AN
45 = AND
46 = AT
47 = BE, infinitive and all present tense forms (am, is are)
48 = BE, all past tense forms (was, were)
49 = BUT
50 = BY
51 = CH
52 = DE
53 = DOWN
54 = ED
55 = ER
56 = FOR
57 = FROM
58 = HAVE, intimive and all present tense forms (have, has)
59 = HAVE, all past tense forms (had)
60 = HE
61 = IN
62 = ING
63 = ION
64 = IT
65 = LE
66 = LESS
67 = LY
68 = MAKE
69 = MORE
70 = MUCH
71 = NO
72 = OF
73 = OFF
74 = ON
75 = OR
76 = OUT
77 = OVER
78 = PRE
79 = RE
80 = SH
81 = SL
82 = SO
83 = ST
84 = TH
85 = THAT
86 = THE
87 = THERE
88 = THEN
89 = THIS
90 = TO
91 = TR
92 = UN
93 = UNDER
94 = UP
95 = WHAT
96 = WHEN
97 = WHERE
98 = WHO
99 = WILL

Cypher

Notebook AZ

A1

A Series begins here.

23, 17, 33, ...

Pad

B Series ...

B1

...

B35

67, 21, 53 ...


Appendix

Original FBI Transcript

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Other Images

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