common

Documentation

Index

• Constants
• Variables
• func Blocks(d []byte, bs int) [][]byte
• func CopyBlock(b []byte) []byte
• func DecodeB64(in []byte) (r []byte)
• func EGCD(A, B *big.Int) *big.Int
• func EncodeHexString(in []byte) (r string)
• func EqualBlocks(a, b []byte) bool
• func InvMod(a, n *big.Int) (*big.Int, error)
• func PackUint32(w ...byte) uint32
• func PadTo(cur int, size int) int
• func RandBytes(size int) ([]byte, error)
• func Repeat(n int, val byte) []byte
• func StandardDeviation(ts []time.Duration)
• func TextScore(s []byte) float64
• func XORBlk(fst, snd []byte) ([]byte, error)
• type AESMode

Constants

const (
	CBC
	ECB
)

Variables

var (
	BadDataErr = errors.New("BAD_DATA")
)

var CanonicalFreq map[byte]float64 = map[byte]float64{
	' ':  0.00189169,
	'!':  0.0306942,
	'"':  0.000183067,
	'#':  0.00854313,
	'$':  0.00970255,
	'%':  0.00170863,
	'&':  0.00134249,
	'\'': 0.000122045,
	'(':  0.000427156,
	')':  0.00115942,
	'*':  0.0241648,
	'+':  0.00231885,
	',':  0.00323418,
	'-':  0.0197712,
	'.':  0.0316706,
	'/':  0.00311214,
	'0':  2.74381,
	'1':  4.35053,
	'2':  3.12312,
	'3':  2.43339,
	'4':  1.94265,
	'5':  1.88577,
	'6':  1.75647,
	'7':  1.621,
	'8':  1.66225,
	'9':  1.79558,
	':':  0.000549201,
	';':  0.00207476,
	'<':  0.000427156,
	'=':  0.00140351,
	'>':  0.000183067,
	'?':  0.00207476,
	'@':  0.0238597,
	'A':  0.130466,
	'B':  0.0806715,
	'C':  0.0660872,
	'D':  0.0698096,
	'E':  0.0970865,
	'F':  0.0417393,
	'G':  0.0497332,
	'H':  0.0544319,
	'I':  0.070908,
	'J':  0.0363083,
	'K':  0.0460719,
	'L':  0.0775594,
	'M':  0.0782306,
	'N':  0.0748134,
	'O':  0.0729217,
	'P':  0.073715,
	'Q':  0.0147064,
	'R':  0.08476,
	'S':  0.108132,
	'T':  0.0801223,
	'U':  0.0350268,
	'V':  0.0235546,
	'W':  0.0320367,
	'X':  0.0142182,
	'Y':  0.0255073,
	'Z':  0.0170252,
	'[':  0.0010984,
	'\\': 0.00115942,
	']':  0.0010984,
	'^':  0.00195272,
	'_':  0.0122655,
	'`':  0.00115942,
	'a':  7.52766,
	'b':  2.29145,
	'c':  2.57276,
	'd':  2.76401,
	'e':  7.0925,
	'f':  1.2476,
	'g':  1.85331,
	'h':  2.41319,
	'i':  4.69732,
	'j':  0.836677,
	'k':  1.96828,
	'l':  3.77728,
	'm':  2.99913,
	'n':  4.56899,
	'o':  5.17,
	'p':  2.45578,
	'q':  0.346119,
	'r':  4.96032,
	's':  4.61079,
	't':  3.87388,
	'u':  2.10191,
	'v':  0.833626,
	'w':  1.24492,
	'x':  0.573305,
	'y':  1.52483,
	'z':  0.632558,
	'{':  0.000122045,
	'|':  0.000122045,
	'}':  6.10223e-0,
	'~':  0.00152556,
	'ä':  6.10223e-05,
	'æ':  0.000183067,
	'ö':  6.10223e-05,
	'ü':  0.000122045,
}

Functions

func Blocks

func Blocks(d []byte, bs int) [][]byte

a is of lenth n * bs where n is a real number split into a blocks

func CopyBlock

func CopyBlock(b []byte) []byte

func DecodeB64

func DecodeB64(in []byte) (r []byte)

takes a b64 encoded string as input and returns correspoinding bytes

func EGCD

func EGCD(A, B *big.Int) *big.Int

func EncodeHexString

func EncodeHexString(in []byte) (r string)

func EqualBlocks

func EqualBlocks(a, b []byte) bool

func InvMod

func InvMod(a, n *big.Int) (*big.Int, error)

func PackUint32

func PackUint32(w ...byte) uint32

func PadTo

func PadTo(cur int, size int) int

func RandBytes

func RandBytes(size int) ([]byte, error)

func Repeat

func Repeat(n int, val byte) []byte

func StandardDeviation

func StandardDeviation(ts []time.Duration)

func TextScore

func TextScore(s []byte) float64

func XORBlk

func XORBlk(fst, snd []byte) ([]byte, error)

xors fist block in place

Types

type AESMode

type AESMode int