In: Tatra Mountains Mathematical Publications, vol. 70, no. 3
Štefan Porubský
Details:
Year, pages: 2017, 41 - 91
Keywords:
STP cipher, Josef Růžek, Karol Cigáň, František Moravec, Czechoslovak military
cryptography, Word War II.
About article:
Lieutenant colonel Karol Cigáň (1921–2005), head of the cryptographic
unit of the Czechoslovak Ministry of National Defence in the period
1949–1958 was after discharging from this position in Prague relocated to an
insignificant and substandard command position at a district military administration
in Slovakia. His cryptographic experience was of no use in his new
position. To profit from his previous experience as a high qualified cryptographer
he started to study the accessible literature and archive materials about
the usage of the Czechoslovak cipher systems during the WWII. The result of
this his activity were some manuscripts where he deciphered and analyzed some
Czechoslovak military wireless telegrams. His critical analysis and his conclusions
did not meet an understanding or a positive response of historians and were nor
accepted for publication. He had no other chance as to sent them to archives.
Unfortunately only one (in two copies) and a collection of small notes survived.
The aim of this paper is to make decisive technical parts of manuscript [K. Cigáň:
Impacts of the decryption of the cipher system of the Czechoslovak Ministry
of Defence in London from the years 1940–1945 on the resistance movement.
Archive of the Slovak National Uprising, Bansk´a Bystrica, Slovakia, Document
collection (Fond) V, manuscript no. S36/90, 46 pp.] about the usage of the socalled
STP cipher accessible. Thereby we complement the paper [Š. Porubský:
STP cipher of the Czechoslovak in-exile Ministry of Defence in London during
WWII, in: Proc. of EuroHCC'17, 3rd European Historical Ciphers Colloq.,
Smolenice Castle, Slovakia, 2017 (J. von zur Gathen et al., eds.), Slovak Univ.
of Technology in Bratislava, 2017, pp. 47–66] where the part of this manuscript
containing Cigáň's method for solving STP cipher which he calls "mathematical" mathematical
is published. To put Cigáň's analysis and comment into their historical framework
we briefly outline the history of Czechoslovak military intelligence activities with
emphasis on their cryptological component.
How to cite:
ISO 690:
Porubský, Š. 2017. Application and misapplication of the Czechoslovak STP cipher during WWII (report on an unpublished manuscript). In Tatra Mountains Mathematical Publications, vol. 70, no.3, pp. 41-91. 1210-3195.
APA:
Porubský, Š. (2017). Application and misapplication of the Czechoslovak STP cipher during WWII (report on an unpublished manuscript). Tatra Mountains Mathematical Publications, 70(3), 41-91. 1210-3195.