NAME

       base64 - Provides base64 encode and decode, see
           RFC 2045.

DESCRIPTION

       Provides base64 encode and decode, see RFC 2045.

DATA TYPES

       base64_alphabet() = 65..90 | 97..122 | 48..57 | 43 | 47 | 61

              Base 64 Encoding alphabet, see RFC 4648.

       base64_string() = [base64_alphabet()]

              Base 64 encoded string.

       base64_binary() = binary()

              Base 64 encoded binary.

       byte_string() = [byte()]

              Arbitrary sequences of octets.

EXPORTS

       decode(Base64) -> Data

       decode_to_string(Base64) -> DataString

       mime_decode(Base64) -> Data

       mime_decode_to_string(Base64) -> DataString

              Types:

                 Base64 = base64_string() | base64_binary()
                 Data = binary()
                 DataString = byte_string()

              Decodes a base64-encoded string to plain ASCII. See RFC 4648.

              mime_decode/1  and  mime_decode_to_string/1  strip  away  illegal characters, while
              decode/1 and decode_to_string/1 only strip away whitespace characters.

       encode(Data) -> Base64

       encode_to_string(Data) -> Base64String

              Types:

                 Data = byte_string() | binary()
                 Base64 = base64_binary()
                 Base64String = base64_string()

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