The cryptosystem obtains a high knapsack density, and hence it is secure against low density subset-sum attack.

该公钥密码体制具有较高的背包密度，因此可以抵抗低密度子集和攻击。

youdao

Under the assumption that the random high-density knapsack problem is infeasible, the proposed schemes are provably secure against ciphertext-only attack.

在高密度随机背包困难性假设下，可以证明方案在唯密文攻击下是安全的。

youdao

Under the assumption that the random high-density knapsack problem is infeasible, the proposed schemes are provably secure against ciphertext-only attack.

在高密度随机背包困难性假设下，可以证明方案在唯密文攻击下是安全的。

youdao