FHE History

2025-07-13   blogpage sketch fhe


https://x.com/i/grok/share/RSLkKLSs4lyw2208GWL4bXSIJ

Homomorphic Encryption References



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Pre-history


FHE was first envisioned by Rivest, Adleman, Dertouzos with the name "privacy homomorphisms" in 1978.

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From Craig Gentry's slides


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Pre-FHE




Gen I & II


It took until 2009 for the first FHE scheme to be constructed by Craig Gentry in his PhD thesis

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The first working implementation came in 2011 by Gentry and Halevi, though it was extremely slow (30 minutes per bit during computation [^5]).

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Gen I



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Gen II

Key Papers:


Other Works:





Gen III


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Gen III





Gen IV

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Post Gen IV


https://eprint.iacr.org/2025/346.pdf

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See Fully Homomorphic Encryption Just Became Practical







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