有何规律

[jings]

每一行的两个加密字符串代表一条数据里面的两个字段
M9G/+mLfAKE= M9G/+mLfAKE=
VnARTfRgqw0= q9AzAIRjJyA=
7A/EnS47n58= BFPm4KrYOwE=
W3ayA54PaCw= cBvBS+C6Elo=
OpIfZOByPkI= Fs6vKlKAqXQ=
NhcSdFh9CpCyLhxhlrbt9Q== 3L7YHfjlK0w=
HySO+/lNvsSyLhxhlrbt9Q== HpoGf6QPGNc=