# Research

Engineering notes and technical write-ups from CipherStash

## [Exact OPE from CLWW ORE via Backward Carry + MSB-Bit Placement](https://cipherstash.com/research/backward-carry-ope.md)
*Published on 2026-04-22T00:00:00.000Z*

An engineering note deriving an exact order-preserving interpretation of the CLWW order-revealing encryption scheme, via a backward-carry pass and MSB-bit placement of the plaintext signal. Includes the full error-rate derivation, signal/noise argument, and empirical verification.

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