Erlang logo
User's Guide
Reference Manual
Release Notes
PDF
Top

STDLIB
Reference Manual
Version 1.19.1


Expand All
Contract All

Table of Contents

base64

MODULE

base64

MODULE SUMMARY

Implements base 64 encode and decode, see RFC2045.

DESCRIPTION

Implements base 64 encode and decode, see RFC2045.

DATA TYPES

ascii_string() = [1..255]

ascii_binary() = binary()

A binary() with ASCII characters in the range 1 to 255.

EXPORTS

encode(Data) -> Base64
encode_to_string(Data) -> Base64String

Types:

Base64String = ascii_string()

Encodes a plain ASCII string into base64. The result will be 33% larger than the data.

decode(Base64) -> Data
decode_to_string(Base64) -> DataString
mime_decode(Base64) -> Data
mime_decode_to_string(Base64) -> DataString

Types:

DataString = ascii_string()

Decodes a base64 encoded string to plain ASCII. See RFC4648. mime_decode/1 and mime_decode_to_string/1 strips away illegal characters, while decode/1 and decode_to_string/1 only strips away whitespace characters.