Le dim. 14 oct. 2018 à 21:21, Doug Ewell via Unicode <unicode@unicode.org> a écrit :
> Steffen Nurpmeso wrote: > > > Base64 is defined in RFC 2045 (Multipurpose Internet Mail Extensions > > (MIME) Part One: Format of Internet Message Bodies). > > Base64 is defined in RFC 4648, "The Base16, Base32, and Base64 Data > Encodings." RFC 2045 defines a particular implementation of base64, > specific to transporting Internet mail in a 7-bit environment. > Wrong, this is "specific" to transporting Internet mail in any 7 bit or 8 bit environment (today almost all mail agents are operating in 8 bit), and then it is referenced directly by HTTP (and its HTTPS variant). So this is no so "specific". MIME is extremely popular, RFC 4648 is extremely exotic (and RFC 4648 is wrong when saying that IMAP is very specific as it is now a very popular protocol, widely used as well). MIME is so frequently used, that almost all people refer to it when they look for Base64, or do not explicitly state that another definition (found in an exotic RFC) is explicitly used.