Function ed25519 

pub fn ed25519(
    asset_filename: &str,
    sig_filename: &str,
    asset_bytes: &[u8],
    sig_bytes: &[u8],
    trusted_keys: &[[u8; 32]],
) -> Result<()>

Verify asset_bytes against the detached-signature sig_bytes under any key in trusted_keys. Returns Ok iff at least one key verifies; otherwise UpdateError::BadSignature.

sig_filename determines the format:

• anything ending in .minisig is parsed as minisign,
• everything else is treated as a raw 64-byte Ed25519 signature.

Errors

UpdateError::BadSignature on any of: malformed signature file, unsupported minisign algorithm, or no key verifying.