Encoding

Relation/CHD: No encoding - data are displayable ASCII characters.
Encoding as defined by MIME (Multipurpose Internet Mail Extensions) standard RFC 1521. Four consecutive ASCII characters represent three consecutive octets of binary data. Base64 utilizes a 65-character subset of US-ASCII, consisting of both the upper and
Hexadecimal encoding - consecutive pairs of hexadecimal digits represent consecutive single octets.