发方 meaning in English

originating party
shipper/receiver difference

The sender eventually will time out and retransmit all unacknowledged frames , beginning with the lost or damaged one
最后发方将会不计时,并且由丢失的或损坏的一帧开始,重发所有未接收的帧。
Unconditionally secure authentication codes with arbitration protect against deception from the transmitter and from the receiver as well as that from the opponent
摘要具有仲裁的认证码即要防止敌手的欺骗，又要防正收方和发方的互相欺骗。
Assuming that the encoding rules of the transmitter and the receiver are chosen according to a uniform probability distribution , the probabilities of deceptions are also computed
当收方和发方的编码规则按等概率分布选取时，各种攻击成功的概率也被算出。
Assuming that the encoding rules one chosen according to a uniform probability distribution , the probabilities of a successful impersonation by the opponent , a successful substitution by the opponent , a successful impersonation by the transmitter , a successful impersonation by the receiver and a successful substitution by the receiver
假设编码规则是按照均匀概率分布选择的，笔者给出了敌手模仿攻击、敌手替换攻击、发方模仿攻击、收方模仿攻击和收方替换攻击的成功概率。