| Information | |
|---|---|
| has gloss | eng: The 5-UCO (5-Unit Controlled) was an on-line one-time tape Vernam cipher encryption system developed by the UK during World War II for use on teletype circuits. During the 1950s, it was used by the UK and US for liaison on cryptanalysis. |
| lexicalization | eng: 5 UCO |
| lexicalization | eng: 5-UCO |
| lexicalization | eng: 5UCO |
| instance of | c/Encryption devices |
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