Simple in-memory base64 encoder and decoder. Used internally for converting
raw vectors to text. Interchangeable with encoder from base64enc or
openssl package.
Usage
base64_dec(input)
base64_enc(input)
base64url_enc(input)
base64url_dec(input)
Arguments
input
string or raw vector to be encoded/decoded
Details
The base64url_enc and base64url_dec functions use a variation of base64
that substitute characters +/ for -_ respectively, such that the output
does not require URL-encoding. See also section 5 of rfc4648.