Base64 Encoding « Network Protocol « Java

1.Base64 Content-Transfer-Encoding from RFC 2045 Multipurpose Internet Mail Extensions (MIME) Part One
2.Base64 encoding and decoding with URL and filename safe alphabet as defined by RFC 3548, section 4
3.Provides Base64 encoding and decoding as defined by RFC 2045
4.Encode/decode for RFC 2045 Base64 as defined by RFC 2045 N. Freed and N. Borenstein.
5.Provides encoding of raw bytes to base64-encoded characters, and decoding of base64 characters to raw bytes.