Vic Cipher

The VIC cipher was a pencil and paper cipher used by the Soviet spy Reino Hayhanen, codenamed "VICTOR". It was arguably the most complex hand-operated cipher ever seen. Although certainly not as complex or secure as modern computer operated stream ciphers or block ciphers, in practice messages protected by it resisted all attempts at cryptanalysis by at least NSA (and perhaps other organizations such as GCHQ) from its discovery in 1953 until Hayhanen's defection in 1957. The VIC cipher has several components, including a base 10 lagged Fibonacci generator, a straddling checkerboard, and a disrupted double transposition. Until the discovery of VIC, it was generally thought that a double transposition alone was the most complex cipher an agent, as a practical matter, could use as a field cipher.

External links

See also: Topics in cryptography.

 

<< PreviousWord BrowserNext >>
afghanistan timeline 1941 1950
pr
list of people by name: ia
list of people by name: ib
list of people by name: ic
list of people by name: id
list of people by name: ie if
list of people by name: ig
list of people by name: ih
list of people by name: ii ik
list of people by name: il
list of people by name: im
list of people by name: in
list of people by name: io
list of people by name: ip iq
list of people by name: ir
list of people by name: is
list of people by name: it
list of people by name: iu iv
list of people by name: iw
list of people by name: ix iz
cai yuanpei
brooklyn botanic garden
pd
hs
eugene fama
mike huckabee
rsa security
aikido doshu
staten island ferry
sn
a list
binaural
shaoxing
marionette
people's war
the indus entrepreneurs
py
qiu jin
list of municipalities in barcelona
rias
marche
list of municipalities in burgos
list of municipalities in cceres