Function import_public_key_raw 

pub async fn import_public_key_raw(raw: Vec<u8>) -> Result<PublicKey, Error>

Import a raw 32-byte RFC 7748 u-coordinate as a public key.

Import is deliberately permissive, as the platform’s is: any 32-byte string is accepted (the high bit is masked at use, per RFC 7748), and degenerate keys — small-order points, non-canonical encodings, points on the twist — are not rejected here. A small-order key surfaces at agree as error.invalid-key (the all-zero check); material of any other length fails error.invalid-key at import.