High Quality Content by WIKIPEDIA articles! Xxencode is an binary-to-text encoding similar to Uuencode which uses only the alphanumeric characters, and the plus and minus signs. It was invented as a means to transfer files in a format which would survive character set translation, particularly that between ASCII and the EBCDIC encoding used on IBM mainframes. A binary-to-text encoding is encoding of data in plain text. More precisely, it is an encoding of binary data in a sequence of ASCII-printable characters. These encodings are necessary for transmission of data when the channel or the protocol only allows ASCII-printable characters, such as e-mail or usenet. PGP documentation (RFC 2440) uses the term ASCII armor for binary-to-text encoding when referring to Radix-64.

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