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McCormick Cipher

Tool to try to understand the McCormick cipher, still unresolved. This code is associated with a case of murder in the United States and investigators believe that its resolution could advance the investigation.

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McCormick Cipher -

Tag(s) : Cryptography, Raw Data

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McCormick Cipher

Ricky McCormick Notes

dCode does not propose a tool to decipher the code or its variants because this code remains unresolved today. Nobody has yet found a perfect translation or explained the entire message without ambiguity. On this page are listed the original notes and their transcriptions.

Tool to try to understand the McCormick cipher, still unresolved. This code is associated with a case of murder in the United States and investigators believe that its resolution could advance the investigation.

Answers to Questions

What is the content/transcript of page 1?

The unencrypted content of page 1 remains unknown, but here is a transcript (potentially, the original writing being handwritten, some characters may be different):
// Page 1
(MNDMKNEARSE-N-S-M-KNARE) (ACSM?)
TFRNE NPtNSE NPBSER CBRNSE NPRSE INC
PRSE NMRSE OPRE HLDNLDNCBE(TFXLE TCXL N CBE)
AL-PRPPIT XLYPPIY NCBE MGKSE W CD RCBR NSE PRSE
WLDRCBRNSE NT SGNENTXSE-CRSLE-CLTRSE WLDNCBE
ALWLD NCBE TSME LRSE RLSE VRGLSNE AS N WLD NCBE
(NOPFSE NLSRE NCBE)NTE GDDMNSENCURERCBRNE
(TENE TFRNE NCBRTSENCBE INC)
(FLRSE PRSE ONDE 71 NCBE)
(CDNSE PRSE ONSDE 74 NCBE)
(PRTSE PRSE ONREDE 75 NCBE)
(TF NRCMSP SOLE MRDE LUSE TO TE WLD N WLD NCBE)
(194 WLD'S NCBE) (TRFXL)

<b>mccormick</b>-page1.jpg (Source: FBI)

What is the content/transcript of page 2?

The unencrypted content of page 2 remains unknown, but here is a transcript of the notes
// Page 2
ALPNTE GLSE - SE ERtE
VLSE MTSE-CTSE-WSE-FRTSE
PNRTRSE ONDRSE WLD NCBE
NWLDXLRCMSP NEWLD S TS MEXL
DVLMT 6TUNSE NCBEXL
(MUNSARSTENMUNARSE)
KLSE-LRSTE-TR SE-TRSE-MKSE?-MRSE
(SAEGNSE SE NMRSE)
NMNRCBRNSE PTE ZPTE WSRCBRMSE
36MLSE 74SPRKSE 29KENOSOLE 173RTRSE
35 GLE CLGSE VUNVTRE DKRSE PSESHLE
651MTCSE HTLSE NCVTCTRS NMRE
99.84.S ZUNE PLSE NCRSE AOLTSE NSRSE NBSE
NSREONSE PVTSE WLD NCBE (3XORL)
BNMSE NRSE INZ NTRLE RCBRNSE NTSRCRSNE
LSPNSE NGSPSE MKSERBSE NCBEAVXLR
HM CRE NMRE NCBE 1/2 MUND PLSE
D-W-M-4 MIL XDRLX

<b>mccormick</b>-page2.jpg (Source: FBI)

Which clues are in the text?

Some letter suites appear several times in the Ricky Mccormick text.

Example: RCBRNSENTS, RSEWLDNCB

The n-grams SE, PR, RSE, NCBE are the most common.

Source code

dCode retains ownership of the online 'McCormick Cipher' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (PHP, Java, C#, Python, Javascript, Matlab, etc.) no data, script or API access will be for free, same for McCormick Cipher download for offline use on PC, tablet, iPhone or Android !

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Questions / Comments

Thanks to your feedback and relevant comments, dCode has developped the best McCormick Cipher tool, so feel free to write! Thank you !


Source : https://www.dcode.fr/mccormick-cipher
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