Username Privacy
- Unlike other messaging apps, Signal cannot easily see or produce the usernames of given accounts.
- Usernames in Signal are protected using a custom Ristretto 25519 hashing algorithm and zero-knowledge proofs.
Here’s a piece of text you can use to describe or ask about that error:
This error typically occurs when a game or application tries to call a specific function from an AMD GPU library (AGS — AMD GPU Services), but the version of the DLL (often amd_ags_x64.dll ) on your system is outdated, missing, or incompatible. It commonly happens after updating graphics drivers or swapping GPU vendors without properly cleaning old files.
In addition to other group attributes that are end-to-end encrypted (such as group names, group descriptions, and group avatars), the Signal service also doesn’t have access to any information about which accounts are part of a group, which accounts are admins in a group, which accounts can add new people to a group, which accounts can approve requests to join a group, or which accounts can send messages in a group.