一次模 meaning in English

consumable pattern
expended pattern
one-off pattern

It is provably secure in the random oracle paradigm and its computation cost is just one exponent and one multiplication together with on addition at the signer side and the online computation is one multiplication together with one addition
它在随机oracle模式下是安全的且签名方进行签名只需要一次指数运算一次模乘运算一次加法运算。在线计算量则只需一次乘法和一次加法，因而非常高效且适合智能卡的应用。