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Cryptosystems which support computation on encrypted data. They might be partially homomorphic (support for one operation such as + or *) or they might be fully homomorphic (any sequence of + and *).

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How does order-preserving encryption work on string?

Paillier cryptosystem has the property that the product of 2 ciphertexts decrypt to the sum of the plaintexts. Strings are integers. Only that they are usually large. So this algorithm is also availa …
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