DOC_2.PDF

·oocID: 40~ENTIAL 
SECURITY CLASSIFICATION 
NSA STAFF PROCESSING FORM 
TO 
DDO 
I EXREG CONTROL NUMBER 
I 
KCC CONTROL NUMBER I z CONTROL NUMBER 
I Z-054-98 
THRU• 
SUBJECT 
KCC SUSPENSE 
CIA KRYPTOS Sculpture -- The Challenge and 
Re:solution (U) 
ELEMENT SUSPENSE 
DISTRIBUTION 
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1. 
(U) 
In response to your request we have put together a package 
cnronologically outlining the events in our decryption (89%) of the CIA 
courtyard KRYPTOS sculpture. 
Also attached is a copy of the original mem-
orandum to Adm. McConnell with attachmen…

. DOCI.O:. 405098·9 
Chronological history of NSA personnel and their involvement 
in the partial decryption of tha KRYPTOS.sculpture 
located in the CIA courtyard 
1988 -
The CIA Fine Arts Commission approves James Sanborn's 
proposal. 
1990 - The artwork, titled Kryptos, is dedicated. 
A portion of 
this work of art consists of a classic Vigenere Square and 870 
characters of cipher punched through two large copper sheets. 
• 
1991 - While on a trip to the CIA headquarters, an informal 
group comprised mainly of Cryptanalysis interns, handwrites the 
cipher onto sheets of paper , and distrib…

." noc~n: '. 4:05.0989 
DATE: 
REPLY TO 
ATTN OF: 
9 June 
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Z-043-93 
SUB.JECT: 
CIA KRY?TOS Sculpture -
Che.llenge ana rtesolution 
INFOR..lw!ATION MEMORANDUM 
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THRU: 
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TO: 
1. 
(POUO) 
The KRY?TOS sculpture, located at the entr2nce and 
in the courtyard of the new CIA headquart~rs, consists of a seriss of 
stone "pages" containing code which begins as Intern2tional Morse and 
increases in complexity as the s~onework extends into the courtyard. 
Inserted ~e~ween these sto…

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4050989 “DOCID (CIDHER ULP TURES KRYPTO THs DKERNS HGNEF JY OTMK Y RDM Zi K ch AX YUSDJ YOTOQUXCOBOVYUVILLTR RF FD Vv fx] HZ2WET2Z2YVGW P JTUD.EE VF MIAGPFXHORIG. QZDQOM DAGOV — Bal TIMVMZITANQOLV KO JTRR - IYCUQZERE WHKUWOQOLS ZFEFT LBQCRTIBIDFE J QZ2Z2G2Z2LECGYUXUEHENOUTSB KS J HK ® UF D H VLEDKFEZMOQQITLITUVUGS HHDODODUV coal Bay Ot bd HONTGPUAHCNUVPODIJIM LZ22Z2VRR > 4 Ixy TG AE WILL BI SNOS HN H RO NDYA = Ea DYS HNATA MR = * = WxXMN SLLSLULNOE N x RNGATIdH " 2 > UDRETN = NRAHCTEN all Bi Ix] i xt AMHHEWE TBRSP Ixy HI fx] ERTNRTOI RI E ARMA ROAG AOS e) HTT AA HILC SEDODNI E T DOD M B A R iT…

“pOCcID: 4050989 alphabets Plain component: Keyword mixed sequence Cipher component: Keyword mixed sequence Repeating Key: PALIMPSEST Index letter: K P: KRYPTOSABCDEFGHI Cl: PTOSABCDEFGHIJIL™M C2: ABCDEFGHIJIJUMNQUVY C3: LMNQOUVWKZKRYPTOS C4: TILMNQUVWKXZKRYPT c5: MNQUVWXKZKPRYPTOSB C6é: PTOS AR BCDEFGHITL™M C7: SA BCYDEF GHIITLMNQOU C8: EFGHITJLIMNQUVWX2Z C9: SR BCDEFGHI FT LMNQOU “C1l1O:TOSABCDEFGHIIFTILMN EMUTPHZLAF AXYUSDJKZL DKRNSHENE ET BETWEENSUB TLESHADING ANDTHABSCE OVYUVLLIZE VIYQTMAYRD MED LIESTHENUA NCEOFIQLUS ION —tPOu00) Respaced and punctuated, it “BETWEEN SUBTLE SHADING AND THE…

“DOCLD:: ’ 4050989 ptogrecnv: P ein compone her compoone eeting Kev ex letter: 7 S? UGSYQPTFE HOKNOWST ie ka ka pa ko ka itu pe bg eriodic Polvelpnabetic Surs alpnenets Kevwerd mixed sequence 525 ti Keyword mixed sequence be RYPTOSA BCDEFGH CDEFGHIT ASBCDETGH DETGHITL JEMNO OVW BEBCDEFPCH ASCDEFGH SCoOETCGERI T a pou Hw he Kw a! wn qk Hi< EI ig QP it woe ga eo oty ww ied Det UNAQZGZL SEREDAND KZEMVDUF NLOCATIO FPWNTDKI ZEYSH OULDITSB URIEDOUT UNLAVIDX HEEXACTL QNTGPUAE GEXTHIRT OZEXBDMV XPOINTEI Se qQ HH * ao wou Hoo) H wy] QQ) te es 4 Ho< ict Aor WC) yo) ars nc ees Ho i na uc oi BM Zin Mw wy …

... 
... oocr0:·: ·· 4:oso9a9 
PART 3 
Cryptog:-=.phy: Keyed Columnc.r tr=.nspcsi::.ior: 
Matrix size: 
Incomple~ely filled 4 x· 35 
Specific k.ev: KRYPTOS, numerically keye·:i and l:"2Deated l.3 i:.imes 
(first 12 colum~s listed be~ow) 
Route: 
3ottom to i:.O? · 
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