Say I have a message m.
m1 = sha256(m)
m2 = sha224(m)
Is there any relationship between m1 and m2? If I'm trying to hide the value of m, can a third party guess at m if they have these two values? I'm assuming the answer is no, but just want to make sure there are no caveats.
The reason I want to use two different hashing functions on the same message is to generate two keys that are different but still related to the same data.