Encryption - Cyclic Permutations Technology ID
The research ID for Encryption - Cyclic Permutations in Hearts of Iron IV is improved_encryption.
Encryption - Cyclic Permutations

Engineering1940
Unlock this technology with the research command and the tech ID improved_encryption.
About this technology
Limitation in the randomization of cipher machines can be exploited to break the ciphers. By improving the randomness of the rotor mechanics, we can make this kind of cryptanalysis more difficult.