加密

jiā mì to encrypt; encryption; to protect with a password

代

dài to substitute; to act on behalf of others; to replace; generation; dynasty; age; period; (historical) era; (geological) eon

付

fù to pay; to hand over to; classifier for pairs or sets of things

Fù surname Fu

有效

yǒu xiào effective; in effect; valid

期限

qī xiàn time limit; deadline; allotted time

找

zhǎo to try to find; to look for; to call on sb; to find; to seek; to return; to give change

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