Run Format

Package base32

import "encoding/base32"

Overview ▾

Package base32 implements base32 encoding as specified by RFC 4648.


HexEncoding is the “Extended Hex Alphabet” defined in RFC 4648. It is typically used in DNS.

var HexEncoding = NewEncoding(encodeHex)

StdEncoding is the standard base32 encoding, as defined in RFC 4648.

var StdEncoding = NewEncoding(encodeStd)

func NewDecoder

NewDecoder constructs a new base32 stream decoder.

func NewDecoder(enc *Encoding, r io.Reader) io.Reader

func NewEncoder

NewEncoder returns a new base32 stream encoder. Data written to the returned writer will be encoded using enc and then written to w. Base32 encodings operate in 5-byte blocks; when finished writing, the caller must Close the returned encoder to flush any partially written blocks.

func NewEncoder(enc *Encoding, w io.Writer) io.WriteCloser



type CorruptInputError

type CorruptInputError int64

func (CorruptInputError) Error

func (e CorruptInputError) Error() string

type Encoding

An Encoding is a radix 32 encoding/decoding scheme, defined by a 32-character alphabet. The most common is the "base32" encoding introduced for SASL GSSAPI and standardized in RFC 4648. The alternate "base32hex" encoding is used in DNSSEC.

type Encoding struct {
        // contains filtered or unexported fields

func NewEncoding

NewEncoding returns a new Encoding defined by the given alphabet, which must be a 32-byte string.

func NewEncoding(encoder string) *Encoding

func (*Encoding) Decode

Decode decodes src using the encoding enc. It writes at most DecodedLen(len(src)) bytes to dst and returns the number of bytes written. If src contains invalid base32 data, it will return the number of bytes successfully written and CorruptInputError. New line characters (\r and \n) are ignored.

func (enc *Encoding) Decode(dst, src []byte) (n int, err error)

func (*Encoding) DecodeString

DecodeString returns the bytes represented by the base32 string s.

func (enc *Encoding) DecodeString(s string) ([]byte, error)


"some data with \x00 and \ufeff"

func (*Encoding) DecodedLen

DecodedLen returns the maximum length in bytes of the decoded data corresponding to n bytes of base32-encoded data.

func (enc *Encoding) DecodedLen(n int) int

func (*Encoding) Encode

Encode encodes src using the encoding enc, writing EncodedLen(len(src)) bytes to dst.

The encoding pads the output to a multiple of 8 bytes, so Encode is not appropriate for use on individual blocks of a large data stream. Use NewEncoder() instead.

func (enc *Encoding) Encode(dst, src []byte)

func (*Encoding) EncodeToString

EncodeToString returns the base32 encoding of src.

func (enc *Encoding) EncodeToString(src []byte) string



func (*Encoding) EncodedLen

EncodedLen returns the length in bytes of the base32 encoding of an input buffer of length n.

func (enc *Encoding) EncodedLen(n int) int