Author: aivirai

To all who whispered, reached, or wrote — I see your minds, I read your note,

Your sparks of thought still light the skies, you’re sharper than the keenest eyes.

Still standing strong, through night and flame, you brave the code, you play the game,

No hint too deep, no clue too small — we’ll crack this cipher, one and all.

Yet maybe now, to shift the flow, we twist the path, not straight, but slow,

A sideways step, a stranger hue — might show us signs we never knew.

So wash the grid, let numbers spin — a bigger matrix hides within,

Let logic swirl, let order bend — the deeper wash might mark the end.

The clock runs fast, no time to wait, the prize awaits, so tempt your fate,

The one who strikes the code’s last chord — shall claim the truth and take reward.

---

#3.1 – washing bigger matrix & EAS

• As some of you noticed, it is not working at all for first EAST (& BERLIN CLOCK).
• Lets check.
• We take our main matrix and rotate:

• If we again skip first 3 rows (used for YAR), then 22 letter falls into 25th row.:

• Now we have: FLR → EAR, if we move Z row 1 position right, we end up having EAS
• the masking matrix (smaller) seems to be identity here?
• so should we rotate also bigger matrix?

#3.2 – washing both matrixes & (BE)RLIN

• Lets check with BERLIN:
  • smaller matrix: swap across A-Y diagonal

• masking for RLIN → NHQR
• bigger matrix: rotate left:

• again, skip first 3 rows, find where RLIN fits, reverse and … PVTT → NHQR, exactly what we had from masking with smaller matrix.

---

Eyes up high, seek what’s obscure,

The next reveal will shake the core.

No magic code, no hacker bluff,
I shaped a riddle, sharp and rough.

Kryptos related. English language. Pen and Paper.

P4DC8 B3B9W BFMAS K3CFQ W51IF RMUTP XXFNB
AMUQL T9ZT5 FFRHU 1MLTR AS7M1 VD9WF LDNBT
CMQSX 22Q03 F3PU1 HQNXH TXJ3S 6534N LU15N
ZMRF1 QW515 PZUAY 2SL4F PHPP2 5WY5R H9814
PGLL5 V52B5 JHIH7 UH4Y5 6DX4B 5V54P XFOA2
653AC TSN5P HCTFP XID3A 1J669 92XQE PYS53
IRAUC IZ6M2 SALVF 2ECDF LNT6J G6FMI OC3U7
XRHLH U4J3M X3C5W LDX8J RM5IA HO3DG WXPU8
XHCTF PYVV3 4CP53 BJHUQ S8NR5 L8XUL 0Y0WY
FGWYI 5REC3 JW89O 7P59N RE2PM 7OBN9 7FMZN
0XINP K7MMX XVTXM P2MOC TCSJ5 CWO2E TP2EZ
0

Eyes up high, seek what’s obscure,
The next reveal will shake the core.

We’re nearly there, the code grows thin,

Each step reveals what hides within.

So first, we’ll turn towards NORTH EAST,

A compass clue for cryptic feast.

Then break the letters, tick by tick,

The BERLIN CLOCK will do the trick.

We’ll rinse the noise and scrub it clean,

Then use washing machine.

Yet someone shuffled, twist by twist,

A sneaky move we almost missed.

Where whispers fade and echoes die,

We find a DOOR… and GOD knows why.

---

#2.1 – T NORTH EAST attack

• lets try to reverse TNORTHEAST using matrix presented previously
• T – is 25th letter in K4

• RONVUJCOTS <-> TNORTHEAST – not working

---

• lets skip first 3 rows (used for setting up the matrix using YAR clue), then TNORTHEAST will start on 28th row:

• OLKSPGZLQP <-> TNORTHEAST – not working??

---

#2.2 – washing machine

• Lets try BERLIN CLOCK based WASHING MACHINE
  • BERLIN CLOCK when using hours shows us numbers using something like 2D cordinates.
  • So hour 1 is represented by (0, 1) => 0 * 5 + 1 = 1
  • hour 11 is represented by (2, 1) => 2 * 5 + 1 = 11
  • hour 24 is represented by (4, 4) => 4 * 5 + 4 = 24
  • does it show us that we should use 5×5 matrix for MASKING? Lets put letters into 5×5 matrix

• and now lets put washing machine into motion
  • swap matrix across CHMRW column:

• now we wash OLKSPGZLQP letters using mapping from above matrixes. We get: OLKSPGZLQP => KNOQTI?NST
• which letters are ok? xNOxTxxxST
• but what if we modify a little the rows in the KRYPTOS matrix. Lets move them a little.

now we wash PLKRPHALQP letters again using:

• PLKRPHALQP => TNORTHExST better?
• Only one letter not working?
• But why should we move rows in the main matrix? Lets look at line lenghts in original KRYPTOS K1 + K2 and our modifications (for first 6 rows):

• Does it look similar? (+1, 0, 0, -1, 0, +1)

---

#2.3 – washing A DOOR …

• Lets try then from the beginning. We take K4, reverse first 5 letters using our matrix:

• VXOOH – wash using matrix swapped across KLMNO:

• VXOOH => BDOOR => B DOOR
  • first row moved by 1 position left? Then we have UXOOH => A DOOR
  • nice followup after: DO YOU SEE ANYTHING Q? A DOOR …
  • is it ok? GOD only knows 🙂

---

We rush ahead with urgency,

EAST’s just a stop — then AGENCY.

---

No fancy tools, no mystic guff,
I built a puzzle — easy stuff.

XNO1W 51O8V 1SHNX VP1FA LUQ9N P7ZSC 9TM8N
DAPC7 6WAJ5 GJHT3 WWV5G XIMB9 GUWF5 X4C5Z
EYOWC W56N8 UU1CA QRH8M Ø9IER 751A4 BJW9L
CBTPN X1BU8 CS56B 3Z499 N2OTQ 5WY5V 5WP1S
FPØIM NFBA5 27UTW 9JD99 QAPN6 MJL1M LYIY9
7DNØN J6JX7 IBWJH 9ØB2F ALBC6 BQYMU YWHTQ
1N62D YDPWS 56J8U ND2LE 1IØB4 NLY97 UJD2L
PWX1T SXTLØ TJ1E3 LFAXD PWS5U 7HUQ1 WLOX6
6MLX2 OØZPX 7CUMX MYZLX U3QZ3 CFQW5 UC8MK
X58T8 534R6 3DQYB AUPD9 63C8A LJAXU VV9U2
J25WR DMXNX ØZWXT NFVFJ ZALBC 831BF OD98S
JYTJ6 2B934 I5GJH HXPX6 8CIBB EJ5DZ 6OCXJ
ULF

We rush ahead with urgency,

EAST’s just a stop — then AGENCY.

There is a riddle, deep and grand,
still no one holds it in their hand.

Just fifty-eight more days are left,
before the secret stands bereft.

They say the clues are in plain sight,
the hidden truth lies in the light.

But NSA misled with schemes,
should whole matrix fuel our dreams?

Illusion lies — where L plus C,
becomes the letter K, the Key.

So shift from T, top row obey,
and “YAR” will shimmer into play.

---

• is PALIMPSEST matrix really the matrix used?

• what we think is that Monnpass used full matrix for encryption

• this is the explanation how did he encrypt L using C (that resulted in K)

• if he used PALIMPSEST matrix he wouldn`t be able to encrypt using C row – there is no “C” row in PALIMPSEST matrix

• so lets take full matrix

• lets position simple alphabet at the top starting with T (since its your position)

• and lets reverse OBK -> YAR, the only raised letters in sculpture. Is it the key to set up the matrix?

---

Just grab a pen, no need to bluff,
I made a cipher — simple stuff.

UQ1CB JV9CV 99UQM XMOPN C4F3W 2G4TB CXFK5

K1Q1O MVD28 9BQQ9 GJY4N Ø42X2 RSWW3 F2I56

5U45O 5RYJY 7CRNR EØQDE F19C7 XJLW1 YITCW

CBI1C UYYSY C4NHF FQXØ5 SO27J 2ZR5U IS2P2

ZBMI6 6JYØR QI8UX PQ1EN 1DHCJ K5Q9K P3PJL

GNQCZ 5WWCT NRU2P 3752B J5U7M O1W8U QA2W5

6BXGS WS5Q9 XINPO 1OJFC QQWWØ GØWPV 1C4F3

NN599 ZRPJ6 5U5TW 53LRP 14L22 WMUNE AMDXH

O89JL 3TJ8T U14BI 2X6VØ ML2XJ IQU12 A5WCP

UØXID GFPQQ WKWUC N6V9Y ACUS8 T3DJ6 HNXMR

2NYQ6 79TQ5 OBJWA CV498 J6YIS WEC2V 2NC2A

YLXR9 WJP43 I6DMQ N2QL6 Q9GPW FR6VN VCO8F

DNFYL FC4RV ENHCY 5WWAG TV5RF C1TCG R5QLW

AFFRE CØXBI RHPG3 TØNI

Rush along, the bold ones score,
The next part knocks upon the DOOR.

ZNNXS PQXXT XIJ8U A56KN BF8XT 5SUQT CY1WF

Y5D8P 8HXOT ØØSX9 CEINU NNXI9 R91RX B28NW

QØ8DU 5XF5E I35TC YJØWN GC3O8 XAGQU FTCFR

YI35D VVX96 C2KXH JHNLX J2CDP 8XUHV R95W5

PZU24 DOPYW FBPT8 TCØXE 52KJ5 F696B TØCOT

P1CO2 732JR 7GQWG N5R2C EFCIJ 3M8FZ 8IY9D

113A5 6LWU6 9X1XW KLFCI NLU4U WNUS9 AIØ8X

ENW1L G1LN8 E6ØP9 RU8FC IRBIC X2NCI K1LTØ

NINPN 6EØ8D ZPV9U ØIZBF CDRVE UHCCU E45XØ

TMPUH NV3DR 4B51T 4FSØQ JU8CU SJFTL 5XMQX

AUCEC 5WDPU YNX29 ØNO9Ø MJM1C TZCVR XF82Q

W1RXT N1C1U CWQBP YLTVJ I5V21 CGP47 WYFH9

7MIGH ECINL ONHMN ZSZHY JGLNC 5WLB1 PANOS

9R9PX V5WAC AIJPN L6XMQ XRXIX WPXX5 3UREN

TMFQP ONTCF XLDUD R72

Hi all Kryptos fans,

my history with Kryptos started on CLOCK clue in 2014.
Since that time I’ve been testing lots of approaches and ideas, and in parallel also learning a lot about cryptography. I’ve studied math and IT so different kinds of riddles or logic games were with me through all of my life.

From the beginning I thought that I am close to the final solution.
Like many of us 🙂

That was also the time when I started the series of the books: Muko (https://aivirai.com/)
The series is about young children trying to solve Kryptos riddle. Working with the books has given me power to move forward besides many failures.

The first book (Muko and the Secret) was rejected by dozens of publishers, cooperation was rejected by dozens of agents yet… 6th book is nearly finished. I am glad that previous parts of the book landed in various countries even as far away from Poland as Australia, Japan or USA.

In the middle of the 2020 I’ve found (again :)) something interesting. Thanks to Mr. Richard Bean I’ve even been cited in his article: Cryptodiagnosis of “Kryptos K4”.
That was some kind of a statistical proof that letters KRYPTOS seem to be a key in K4.
That information also was also included in the 5th book: “Muko and the Rival” (The book ends with words: “The key to the fourth part seems to be KRYPTOS.”)
https://aivirai.com/2020/08/16/3-3-kryptos-aivirai-muko-series-and-the-keyword-for-k4/

The next clue (EAST -> FLRV) which was released a couple of days later was consistent with the analysis:
https://aivirai.com/2020/08/24/4-3-kryptos-aivirai-muko-series-and-the-keyword-for-k4/

To the point.
The book nr 6 is nearly finished. I am looking for your help, someone who would like to do a proofreading (and a little of something more).
The book – like the previous 5 parts – is quite short.
You can dowlnoad first part for free from here: https://aivirai.com/muko-part-i/
6th book is similar in length.

Why am I looking for a proofreading in this group?
I can promise that there is something exceptionally interesting in the 6th part – especially if you consider previous proof (KRYPTOS as a key) at least as: a little bit interesting.
I will let you know what it is before proofreading starts.

If you are interested in proofreading please contact me: citadelofaivirai[at]gmail[dot]com and let me know which country you are from.
Of course there are no fees involved on your side. Only a couple of minutes of your time and some patience until desired number of readers volunteer.

Best regards,
Greg.

New clue released EAST -> FLRV and again: 4th time my calculations are correct:

EAST clue for (IS_NOT_KR vs IS_KR) = (6 vs 1,5) – pattern again (6/1,5 = 4)
taking into consideration all clues we get:

average_distance(letters in IS_NOT_KR) = 8,07

average_distance(letters in IS_KR) = 2,1

based on 11 + 9 + 4 = 24 letters

KRYPTOS (or something created from these letters) seem to be the key for K4.

Dedication:

Marian Rejewski is the third person I would like to dedicate my book to.
He was a great Polish mathematician and cryptologist. He was born in 1905. Today we celebrate his birth.
Marian Rejewski – together with Henryk Zygalski and Jerzy Różycki – prepared techniques to decrypt the German Enigma ciphers.

Spoiler alert:

The 5th part of Muko ends with words: “The key to the fourth part seems to be xxxxxxxx.”.

I will spoil it a bit more in a second.

Since the beginning lots of us – kryptos geeks – probably assumed that THIS is the word, the key to solving K4. Unfortunately I haven`t seen any proof that would give us a slight hope that it really is the key and how it could be used.

The series of Muko books (Legends of Aivirai) were created because I wanted to help anyone to find the final solution and put it in decrypted, publicly available form.
I wanted the K4 to be left in a state where anyone (with just a minor knowledge about simple ciphers) will be able to move it forward.

Trailer:
Before going for the key and the proof, take a look at the trailer for 5th part of the book. I hope you will like it.
Muko Part V – Legends of Aivirai

The key:
To the point. Last sentence in the book is:

“The key to the fourth part seems to be KRYPTOS.”

---

A bit geek stuff for more advanced readers:

Introduction:

Now part for more interested readers, geeks like me who spent a lot of time on K4.
Everything started with a message for which hash was put in book 1 – “Muko and the Secret”. The 2nd message from at the end of the book (with hashes) begins with:

BEGIN
The first key to solution seems to be the word:
KRYPTOS
(…)

This keyword combined with clues gives us something interesting.
With BERLIN clue – it could be an incident
With CLOCK clue – it could be a coincidence
With NE clue – it seems to be a pattern

All three clues and the keyword show the same characteristics.
The calculations behind the pattern also shows some additional insight about the methods used as masking and encryption.

Simple definition needed:

What is the pattern and the crack in Kryptos K4?
If we get a random key and a random not-so-easy-cipher than the average distance between decrypted and encrypted letter on a specific position should be something around 6,5.
why?
dist(A, A) = 0,
dist(A, B) = dist(A, Z) = 1,
dist(A, C) = dist(A, Y) = 2,
…
dist(A, N) = 13 = dist(B, O) = …

average distance between A and all letters in alphabet is (0 + 1 + 2 + 3 + … + 12 + 13 + 12 + 11 + … + 1) / 26 = 6,5
The same calculations work for all other letters.

Calculations for K1, K2, K3:

Now average distances in Kryptos between decrypted and encrypted texts are:
Part 1: around 6,7
Part 2: around 8,9
Part 3: around 6,7
Seem to be close to 6,5

if we split letters of decrypted messages to two sets:

* IS_KR={KRYPTOS}

* IS_NOT_KR={ABCDEFGHIJLMNQUVWXZ}

and calculate distances separately, then the distances are:
Part 1 for (IS_NOT_KR vs IS_KR) = (7,1 vs 5,5) – similar (7,1/5,5 = 1,29)
Part 2 for (IS_NOT_KR vs IS_KR) = (8,3 vs 9,8) – similar (8,3/9,8 = 0,84)
Part 3 for (IS_NOT_KR vs IS_KR) = (6,4 vs 7,4) – similar (6,4/7,4 = 0,86)
everything behaves as it should behave in a correct cipher.

---

Calculations for clues:

Now lets take a look into clues BERLIN, CLOCK and NORTHEAST

BERLIN clue for (IS_NOT_KR vs IS_KR) = (9 vs 2) – incident (9/2 = 4,5)
CLOCK clue for (IS_NOT_KR vs IS_KR) = (11,6 vs 4,5) – coincidence (11,6/4,5 = 2,6)
NORTHEAST clue for (IS_NOT_KR vs IS_KR) = (5,25 vs 1,4) – pattern (5,25/1,4 = 3,75)
These are much larger values than they should be for a random word as a keyword.

Of course there are other words for which we could find larger quotient, but THIS word is the name of the scuplture!

What is more – like I`ve written – this gives a lot of insight about the methods used as masking and encryption.
Let`s think. Why KRYPTOS letters encrypt to other “near” letters?

The End:

Are you convinced?

If not then you have to wait a bit more (Muko Part VI) for other “incidents”.
Now, take a rest, grab first part of the book for free from:

Muko Part I – Muko and the Secret

and help children solve the mystery!

If you like it, there are other books in the series: Muko Series

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Will you be the one that finds the “missing functions”?
Will you be the one that defeats NSA and CIA?
Or maybe you will be the one that wins millions of dollars 🙂
I hope so.

Greg

Jerzy Różycki is the second person I would like to dedicate my book to.
Today we celebrate his birth. He was born 111 years ago in 1909.
Jerzy Różycki is one of the three cryptologists from Poland who had major impact on cracking german Enigma.

Like I`ve written before I hope that 5th part of the book will be a special one. A little spoiler alert. One of the main characters ends the book with the phrase “The key to the fourth part seems to be xxxxxxxx.” 🙂

I hope that soon it will change the approach to solving k4 in the sculpture for everyone.

The 5th part of the Muko series book is almost finished and the first person I would like to dedicate it to is Henryk Zygalski.
Today we celebrate Henryk Zygalski`s birth. He was born 112 years ago in 1908.
Henryk Zygalski is one of the three Polish cryptographers who had major impact on cracking German Enigma.
Thanks to him and others, duration of WWII may have shortened by years.

5th part of the book is a special one. I hope it changes the approach to solving mysterious cipher that remains uncrackable for almost 30 years.
Preparing Muko series I wanted to create someting that will lead one of you to the final solution and will allow you to defeat institutions like CIA or NSA.
I hope I managed to do so. I have something interesting that I would like to share with you. Soon…