Assuming that cryptography falls into one of three areas:
Awfully weak protocols and algorithms, that are trivial to break with a low amount of effort and resources
Cryptographically strong protocols and algorithms that require more time than the lifetime of the Universe to actually crack
The grey area of unproven, academically hard, or where anyone with a modest amount of resources can't break.
- Are there any weak, but imperfect homomorphic algorithms or approaches that are fast enough to be used in modern applications?
I'm not sure at what point weak cryptography is considered "obfuscation", but I hope that the relative investment in cryptography has a corresponding improvement in security of my plain text data.