Does two symmetric encryption algorithms return the same result in two different OS and Programming Framework?

Question

Simply in .Net I encrypt the the Id By DES a Symmetric Encryption algorithm and specific Key in .NET . I'm wondering could my partner in Java decrypt just by knowing the name of algorithm and the key ?

Thanks

Answer 1

If the implementations are correct, then - yes.

Answer 2

yes he can, that's the point of an algorithm. There are some encryption standards which require additional data, lika padding in RSA, but that does not apply to DES

Answer 3

If you are using same algorithm and same key, you will get the same output. It does not matter which platform you are using.