A FULLY HOMOMORPHIC ENCRYPTION SCHEME下载

weixin_39821526 2019-08-17 06:30:17

著名大学的学位论文，对同态加密提出了有相当启发意义的完全方案，有广泛的应用背景a!
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著名大学的学位论文，对同态加密提出了有相当启发意义的完全方案，有广泛的应用背景a!

Fully Homomorphic Encryption over the Integers We construct a simple fully homomorphic encryption scheme, using only elementary modular arithmetic. We use Gentry’s technique to construct a fully homomorphic scheme from a “bootstrappable” somewhat homomorphic scheme. However, instead of using ideal lattices over a polynomial ring, our bootstrappable encryption scheme merely uses addition and multiplication over the integers. The main appeal of our scheme is the conceptual simplicity. We reduce the security of our scheme to finding an approximate integer gcd – i.e., given a list of integers that are near-multiples of a hidden integer, output that hidden integer. We investigate the hardness of this task, building on earlier work of Howgrave-Graham.

若允许在合约A中直接修改合约B的状态数据，则这次修改是并未生成相关日志的，使得状态修改无法追溯，与区块链“可追溯”的特性相违背。以太坊中跨合约调用也是没有保留日志的。笔者认为这是因为以太坊合约是不可...

To further improve the efficiency of Fully homomorphic encryption (FHE), a leveled FHE scheme based on the Ring learning with errors (RLWE) problem is put forward by simultaneously applying both batch techniques available. Our scheme therefore allows double packing many plaintext values into each ciphertext to support single-instruction-multiple-data-type operations, which effectively reduces the ciphertext expansion ratio. An efficient evolutionary method for achieving arbitrary homomorphic per

Efficient fully homomorphic encryption from RLWE with an extension to threshold encryption Scheme(第1作者为许春香指导的博士生)

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