Fully random PN sequence Can a CDMA PN sequence be fully random, as in encryption-grade randomness, or must it be deterministic? I have tried the first bytes of SHA-256 hashes as PN sequences, but somehow they don't coexist too well.

I know a deterministic code can be generated on-the-fly so no storage is needed, but let's say I have 500 fully random PN sequences stored on a device. Is that good or do you really need deterministic codes like the Gold codes?
What do you mean under encryption-grade randomness?

It is not recommended to use linear random generator in most of the encryption cases.

PN-Sequence is a mutation of the LFSR. Because of the linearity, all future values can be calculated easily. So be careful using linear pseudo random generators.