# Bean 2021: Cryptodiagnosis of "Kryptos K4" > Richard Bean, 2021. 8 records on Mysteries Department cite it. The best open statistical analysis of K4; source of the method entries. Source: https://mysteriesdept.com/sources/SRC0D7HSXST3N01/cryptodiagnosis-of-kryptos-k4 Publisher: Mysteries Department Licence: CC BY 4.0 (credit Mysteries Department and link the page) --- [Sources](https://mysteriesdept.com/sources)[Kryptos](https://mysteriesdept.com/mysteries/kryptos)Bean 2021 **0** # Cryptodiagnosis of "Kryptos K4" Richard Bean, 2021. _Proceedings of the 4th International Conference on Historical Cryptology (HistoCrypt 2021), Linköping Electronic Conference Proceedings 183: 25-33_. Monte Carlo permutation tests on the K4 ciphertext and the released plaintext find strong evidence of a one-to-one relation between corresponding letters; proposes the Gromark cipher as a system that would explain most or all of the observed properties. **Kryptos** Chapterdoi: **[10.3384/ecp183153](https://doi.org/10.3384/ecp183153)** Checked against the original0 ## What it's used for here The best open statistical analysis of K4; source of the method entries. ## The document 9 pages [Pages][Text]Page 1 of 9 [![Page 1](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p1)1][![Page 2](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p2)2][![Page 3](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p3)3][![Page 4](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p4)4][![Page 5](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p5)5][![Page 6](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p6)6][![Page 7](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p7)7][![Page 8](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p8)8][![Page 9](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p9)9] ![Page 1 of Cryptodiagnosis of "Kryptos K4"](https://mysteriesdept.com/files/v/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730/p1) Text taken from the file. Check it against the page. ## Cited by on this site 8 records [K4 uses a Gromark-type cipher (a keyed alphabet with a running numeric key generated by chain addition) or a…](https://mysteriesdept.com/mysteries/kryptos/answers/ANS0D7HTBYY64KH/k4-uses-a-gromark-type-cipher-a-keyed-alphabet-with-a) Answer ANS [The cribs, with the K1 to K3 systems and the tableau, are enough in principle to identify the method by…](https://mysteriesdept.com/mysteries/kryptos/answers/ANS0D7HTE587SN9/the-cribs-with-the-k1-to-k3-systems-and-the-tableau-are) Answer ANS [Bean's tests extract structure from the cribs strong enough to favour some families over others.](https://mysteriesdept.com/mysteries/kryptos/evidence/EVD0D7HTED2504A/beans-tests-extract-structure-from-the-cribs-strong-enough) Evidence EVD [Monte Carlo permutation tests show a strong one-to-one relation between corresponding plaintext and…](https://mysteriesdept.com/mysteries/kryptos/evidence/EVD0D7HTC6R3ASK/monte-carlo-permutation-tests-show-a-strong-one-to-one) Evidence EVD [No peer-reviewed or verified decryption of K4 exists; published work is diagnostic.](https://mysteriesdept.com/mysteries/kryptos/evidence/EVD0D7HTB7G6NVV/no-peer-reviewed-or-verified-decryption-of-k4-exists) Evidence EVD [Kryptos](https://mysteriesdept.com/mysteries/kryptos) The mystery article MYS [How far do the 24 released letters constrain K4?](https://mysteriesdept.com/mysteries/kryptos/questions/QST0D7HT89R1MSZ/how-far-do-the-24-released-letters-constrain-k4) Question QST [What kind of cipher is K4?](https://mysteriesdept.com/mysteries/kryptos/questions/QST0D7HT81Y2GZY/what-kind-of-cipher-is-k4) Question QST ## Cite it ``` Bean, R. (2021). Cryptodiagnosis of "Kryptos K4". Proceedings of the 4th International Conference on Historical Cryptology (HistoCrypt 2021), Linköping Electronic Conference Proceedings 183: 25-33. https://doi.org/10.3384/ecp183153 ``` [Read it free at ecp.ep.liu.se](https://ecp.ep.liu.se/index.php/histocrypt/article/view/153)[Download PDF · 173 KB](https://mysteriesdept.com/files/d/07c226740739d4e688faa018fb228da603aa3b2415f02896caee8fac8d211730) Anyone can read it here; members can download it. Key **SRC** 0D7HSXST3N01 Kind Book chapter Rights CC-BY-4.0 Kept 27 Oct 2026 Checked Against the published original Added by [apollo](https://mysteriesdept.com/u/apollo) The record Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS. [CSL-JSON](https://mysteriesdept.com/sources/SRC0D7HSXST3N01/cryptodiagnosis-of-kryptos-k4/csl.json)