Each record references a variable-length store of related data, a 64 bit key, and a creation and deletion transaction id which is indexed along with the key.

每个记录参考一个相关数据的可变长度存储器，一个64位key。而一个创建和删除处理ID根据这个key被索引。

youdao

The new algorithm can use a variable length key, and its output is 256-bit message authentication code(MAC).

新算法具有一个可变长度密钥，输出2 5 6位的报文鉴别码（MAC）。

youdao