E2E near-standard and practical authenticated transciphering

ePrint Report: E2E near-standard and practical authenticated transciphering

Ehud Aharoni, Nir Drucker, Gilad Ezov, Eyal Kushnir, Hayim Shaul, Omri Soceanu

Homomorphic encryption (HE) enables computation delegation to untrusted third-party while maintaining data confidentiality. Hybrid encryption (a.k.a Transciphering) allows a reduction in the number of ciphertexts and storage size, which makes HE solutions practical for a variety of modern applications. Still, modern transciphering has two main drawbacks: 1) lack of standardization or bad performance of symmetric decryption under FHE; 2) lack …

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