Translation of "confidentially" into French

Any information shall be treated as confidential if so requested by the party which provides it.

Toute information est traitée confidentiellement si la partie qui l'a fournie le demande.

This is confidential, I can only tell him personally.

C'est confidentiel, je ne peux le dire qu'à lui, personnellement.

It's the only way we can speak confidentially.

C'est le seul moyen de parler en privé.

Tell you somethin ' confidentially, these are must- win games for me

Sur le ton de la confidence, je dois absolument gagner