[DanBC]

> Otherwise you won't be able to decrypt it.

Why not?

[mojuba]

Because the only way to make your signal appear more random is to add more redundancy. In order to make it look like an absolute random signal you'd have to add infinite redundancy.

[DanBC]

Redundant data is compressible data.

Random data is not compressible.

Adding redundant data to random data will make it more compressible - less random.