feat: Change encryption to AEAD XChaCha20 Poly1305

[Jaskowicz1]

This PR introduces AEAD XChaCha20 Poly1305 (RTP Size) as the encryption method for voice data.

AEAD AES256-GCM (RTP Size) will not be introduced in this PR as it is simply a suggestion (Discord declares it as a "preference", however, it's easier to just stick with XChaCha20 Poly1305) therefore, after discussions internally, we will stick with just AEAD XChaCha20 Poly1305 (RTP Size)

Code change checklist

• I have ensured that all methods and functions are fully documented using doxygen style comments.
• My code follows the coding style guide.
• I tested that my change works before raising the PR.
• I have ensured that I did not break any existing API calls.
• I have not built my pull request using AI, a static analysis tool or similar without any human oversight.

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[Jaskowicz1]

Currently only have encrypting wrote (not sure if it works).

[Jaskowicz1]

https://discord.com/channels/825407338755653642/887255721392099378/1285665235612733592

lol Discord changed encryption again, what a joke.

[braindigitalis]

we need to get this working then progress on to dave, lets split it into 2 parts

[Jaskowicz1]

Will do it over the weekend :)

…

On Wed, 18 Sep 2024 at 22:08, Craig Edwards (Brain) < ***@***.***> wrote: we need to get this working then progress on to dave, lets split it into 2 parts — Reply to this email directly, view it on GitHub <#1239 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ALF2B6M2TGN2PUIAQKHCDKTZXHTWBAVCNFSM6AAAAABNPFUXZ2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGNJZGQYDOOJQGU> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[braindigitalis]

@Neko-Life has got this working with encryption and decryption using XChaCha20, this is tested so we should perhaps merge this, then put out a release to make the new encryption available in the interim before we can do the DAVE nonesense in a separate pr.

[Jaskowicz1]

Aye good idea

…

On Sat, 21 Sep 2024 at 17:59, Craig Edwards (Brain) < ***@***.***> wrote: @Neko-Life <https://github.com/Neko-Life> has got this working with encryption and decryption using XChaCha20, this is tested so we should perhaps merge this, then put out a release to make the new encryption available in the interim before we can do the DAVE nonesense in a separate pr. — Reply to this email directly, view it on GitHub <#1239 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ALF2B6OPG4NGNQF7V776E53ZXWQW3AVCNFSM6AAAAABNPFUXZ2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGNRVGI2TGMBWHE> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[Mishura4]

YUGE. Rather clean code too!