The difference between dongle and key
I know they're different, and I want to know what their roles are
Key is a general term, and so is encryption dog
However, traditionally, key refers to the hardware used for identity authentication, which can store digital certificates, such as USB key used by online banking.
Dongle mainly refers to the product of software protection, which is used to protect the copyright of the software and not be pirated. It has some functions of preventing decompilation and fighting against debugger. It does not support storing digital certificate and PKI
Can use, the key is to find a good seller, not a liar; Try to Taobao transactions, with no problem to pay; In addition, be sure to buy one that supports the upgrade, that is, if the official upgrade is completed, your software seller will also give you a free upgrade; Try to buy ET199 dongle encrypted Guanglianda software, after-sales service is guaranteed; Finally, if possible, it is recommended to buy a genuine version.