module

base64

Functions

M.encode

Encode binary `data` into a Base64 ASCII string. Trailing partial groups are padded with `=` so the output length is always a multiple of 4. NUL bytes inside `data` are handled correctly.

M.encode(data)

datastringRaw byte sequence (Lua string).

→ stringBase64-encoded ASCII (only [A-Za-z0-9+/=]).

M.decode

Decode a Base64 ASCII `src` string back to bytes. Whitespace inside the input is silently ignored (matches RFC 4648 common practice). Invalid characters or malformed padding return `nil` rather than raising, mirroring the bridge's `-1` sentinel.

M.decode(src)

srcstringBase64-encoded input.

→ string|nilDecoded bytes, or `nil` on parse error.