Function verify_p256_signature_with_aws_lc 

fn verify_p256_signature_with_aws_lc(
    r: &[u8],
    s: &[u8],
    pub_key_x: &[u8],
    pub_key_y: &[u8],
    message_hash: &B256,
) -> Result<(), &'static str>

Available on crate feature std only.