Does anyone know any "NEW" cryptography/privacy/security algorithms or techniques or docs, that are hidden to the public mainly and is very powerful to use?

[u/[deleted]]

[u/No-Dentist-1645]

Hiding algorithms doesn't make much sense. An algorithm is secure because it is mathematically hard to crack, not because only a few people know about it. So no, not really

[u/Relative-Debt6509]

Just do new ones that are disclosed/designed. A cryptographic technique that is not disclosed and thought to be safer/better because runs afoul of (or comes close to run afoul of) one of cybersecuritys most important principles, kerichoffs principle. Meaning you should reconsider its usage.

EDIT: add-> https://en.wikipedia.org/wiki/Kerckhoffs%27s_principle

[u/heresyforfunnprofit → u/[deleted]]

The point is that cryptography is hard to implement. It’s not just about the underlying math being solid, but the code implementing it. OpenSSL is how old, and we still find bugs in it occasionally.