I mean a bruteforcing like this:



Encrypted string: sasfgfiealskdmlasieeqskmdapwowmqwfdmafoewpq
The program starts encrypting loads of strings:
a
b
c
...
hello, this is a tesr -> asddamopemlaspfomsföasmfpaeomsgalfmadfsoöae
hello, this is a tess -> alsdaispodmaoifmsdlkmfapowepqoweialksömdpofa
hello, this is a test -> sasfgfiealskdmlasieeqskmdapwowmqwfdmafoewpq [same as the known encrypted string]

-> bruteforcing complete <-

Oh well it would be different if the encryption wouldn't use a fixed key...