Java convert string to md5 and vise versa -


i have java 3 strings. let example. 

string test = "hi, "; string test1 = "this "; string test2 = "java programming!";

i wanna combine 3 string , change md5 format. how do? use messagedigest class 1 string have no idea how append 3 string before change md5. , wanna change md5 string. need external library.

md5 not format, or encryption algorithm.

md5 hash function. means, long text short digest - apart of short inputs transformation lossy. in general, there no going md5 plain text.


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