toWireHeaders method
Serializes this message to wire headers map using Base64 for binary fields.
RETURNS: {"v": "$v", "w": "$w", "n": "<b64>", "c": "<b64>"}
HINT: Attach this map as HTTP headers at the call site; this library does not send HTTP.
Implementation
Map<String, String> toWireHeaders() {
return {
'v': v.toString(),
'w': w.toString(),
'n': Bytes.toBase64(nonce),
'c': Bytes.toBase64(ciphertext),
};
}