Lucifer

Lucifer_Cryptography

In cryptography, Lucifer was a direct precursor to the Data Encryption Standard (DES). IBM submitted the Feistel-network version of Lucifer as a candidate for the Data Encryption Standard.

The name “Lucifer” was apparently a pun on “Demon”. This was in turn a truncation of “Demonstration”, the name for a privacy system Feistel was working on.
It’s also an interesting television series on Netflix.

Old English, from Latin, ‘light-bringing, morning star’, from luxluc- ‘light’ + -fer ‘bearing’. Lucifer (sense 1)is by association with the ‘son of the morning’ (Isa. 14:12), believed by Christian interpreters to be a reference to Satan. (Google Dictionary)

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