Security expert: “Security by obscurity is no security” is wrong, but obscurity does have value, sometimes significant value. Salting of password hashes adds more complications to password cracking, he says. There are instances where hiding the fact that cryptography itself is used can be a good thing, he writes. Hiding crypto keys is more controversial and harder to argue technically and technically attack than using plaintext keys is harder to do. In some countries, it’s not illegal for me to use crypto or to obscure the fact I use encryption.”]
Source: https://www.csoonline.com/article/2633104/can-obscurity-make-cryptography-better-.html