derivation key

基本解释

The key derivation function (KDF) then takes the secret agreement and produces the key material as output.
密钥派生函数（KDF）然后使用此机密协议，并生成密钥材料作为输出。
This attack is made much more difficult by the introduction of random bytes at the end of the password before the key derivation.
这项攻击由于金钥衍生前在密码末端导入随机位元组而更显困难。
While entering the glory country mansion derivation key person Wang Xifeng, also will lay the foundation in the activity of the mansion of jia hereafter by herself for her;
一进荣国府引出关键人物王熙凤，也为她自己以后在贾府的活动奠定基础；