base64encode applies Base64 encoding to a string.
Packer uses the "standard" Base64 alphabet as defined in RFC 4648 section 4.
Strings in the Packer language are sequences of unicode characters rather than bytes, so this function will first encode the characters from the string as UTF-8, and then apply Base64 encoding to the result.
The Packer language applies Unicode normalization to all strings, and so
passing a string through
base64decode and then
base64encode may not yield
the original result exactly.
While we do not recommend manipulating large, raw binary data in the Packer language, Base64 encoding is the standard way to represent arbitrary byte sequences, and so resource types that accept or return binary data will use Base64 themselves, and so this function exists primarily to allow string data to be easily provided to resource types that expect Base64 bytes.
> base64encode("Hello World")SGVsbG8gV29ybGQ=
base64decodeperforms the opposite operation, decoding Base64 data and interpreting it as a UTF-8 string.