What Else is Revealed by Order-Revealing Encryption?

TheWindBringeth · Aug 18, 2016

https://eprint.iacr.org/2016/786

This work shows that more plaintext information can be extracted from ORE ciphertexts than was previously thought.
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https://eprint.iacr.org/2016/786.pdf

Property-preserving encryption (PPE) encrypts data so that certain functions of plaintexts are computable from ciphertexts by someone without the key. PPE flavors include searchable encryption for text searching, deterministic encryption (where one can detect if two plaintexts are equal), and order-revealing encryption (ORE) where one can detect the order of two plaintexts without decrypting. PPE generally achieves weaker security than traditional encryption because it inherently leaks information about plaintexts.
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Emphasis mine.

mirimir · Aug 19, 2016

I wonder whether any homomorphic encryption can provide strong security.

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What Else is Revealed by Order-Revealing Encryption?

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