internal

Documentation

Index

• Constants
• Variables
• func Add(dst []byte, src ...[]byte)
• func AppendBigUint16(b []byte, v uint16) []byte
• func AppendBigUint32(b []byte, v uint32) []byte
• func AppendBigUint64(b []byte, v uint64) []byte
• func AppendBigUint8(b []byte, v byte) []byte
• func BigCeilLog2(n *big.Int, e int) int
• func BigEqual(a, b *big.Int) bool
• func BigLog2(n *big.Int) int
• func BigLog2e(n *big.Int, e int) int
• func BitsToBytes(bits int) int
• func BytesClone(b []byte) []byte
• func CeilDiv(a, b int) int
• func ConsumeBigU16(b []byte) ([]byte, uint16)
• func ConsumeBigU32(b []byte) ([]byte, uint32)
• func ConsumeBigU64(b []byte) ([]byte, uint64)
• func FermatInverse(k, P *big.Int) *big.Int
• func Grow(buf []byte, bytes int) []byte
• func H(s string) string
• func HB(s string) []byte
• func HI(s string) *big.Int
• func IncCtr(b []byte)
• func LeftMost(b []byte, bits int) []byte
• func ReadBigInt(dst *big.Int, rand io.Reader, buf []byte, max *big.Int) (bufNew []byte, err error)
• func ReadBits(dst []byte, rand io.Reader, bits int) ([]byte, error)
• func ReadBytes(dst []byte, rand io.Reader, bytes int) ([]byte, error)
• func ReadInt(r io.Reader, max int) (int, error)
• func Resize(arr []byte, bytes int) []byte
• func RightMost(b []byte, bits int) []byte
• func SliceForAppend(in []byte, n int) (head, tail []byte)
• func StringClone(s string) string
• type Hash

Constants

const NumMRTests = 64

Variables

var (
	One   = big.NewInt(1)
	Two   = big.NewInt(2)
	Three = big.NewInt(3)
)

Functions

func Add

func Add(dst []byte, src ...[]byte)

func AppendBigUint16

func AppendBigUint16(b []byte, v uint16) []byte

func AppendBigUint32

func AppendBigUint32(b []byte, v uint32) []byte

func AppendBigUint64

func AppendBigUint64(b []byte, v uint64) []byte

func AppendBigUint8

func AppendBigUint8(b []byte, v byte) []byte

func BigCeilLog2

func BigCeilLog2(n *big.Int, e int) int

= ceil(log(n) / log(2 ** e))

func BigEqual

func BigEqual(a, b *big.Int) bool

func BigLog2

func BigLog2(n *big.Int) int

log(n) / log(2)

func BigLog2e

func BigLog2e(n *big.Int, e int) int

log(n) / log(2 ** e)

func BitsToBytes

func BitsToBytes(bits int) int

func BytesClone

func BytesClone(b []byte) []byte

Clone returns a copy of b[:len(b)]. The result may have additional unused capacity. Clone(nil) returns nil.

func CeilDiv

func CeilDiv(a, b int) int

same with `int(math.Ceil(float64(a) / float64(b)))`

func ConsumeBigU16

func ConsumeBigU16(b []byte) ([]byte, uint16)

func ConsumeBigU32

func ConsumeBigU32(b []byte) ([]byte, uint32)

func ConsumeBigU64

func ConsumeBigU64(b []byte) ([]byte, uint64)

func FermatInverse

func FermatInverse(k, P *big.Int) *big.Int

https://cs.opensource.google/go/go/+/refs/tags/go1.18:src/crypto/dsa/dsa.go;l=188-192 fermatInverse calculates the inverse of k in GF(P) using Fermat's method. This has better constant-time properties than Euclid's method (implemented in math/big.Int.ModInverse) although math/big itself isn't strictly constant-time so it's not perfect.

func Grow

func Grow(buf []byte, bytes int) []byte

without guarantee of data

func H

func H(s string) string

func HB

func HB(s string) []byte

hex to byte

func HI

func HI(s string) *big.Int

hex to *big.Int

func IncCtr

func IncCtr(b []byte)

func LeftMost

func LeftMost(b []byte, bits int) []byte

[0 0 0 0 0 0]0 0

func ReadBigInt

func ReadBigInt(dst *big.Int, rand io.Reader, buf []byte, max *big.Int) (bufNew []byte, err error)

ReadBigInt returns a uniform random value in [0, max). It panics if max <= 0.

func ReadBits

func ReadBits(dst []byte, rand io.Reader, bits int) ([]byte, error)

resize dst, ReadFull, cut from right

func ReadBytes

func ReadBytes(dst []byte, rand io.Reader, bytes int) ([]byte, error)

resize dst, ReadFull, cut from right

func ReadInt

func ReadInt(r io.Reader, max int) (int, error)

[0, max)

func Resize

func Resize(arr []byte, bytes int) []byte

keep data

func RightMost

func RightMost(b []byte, bits int) []byte

0 0[0 0 0 0 0 0]

func SliceForAppend

func SliceForAppend(in []byte, n int) (head, tail []byte)

func StringClone

func StringClone(s string) string

Types

type Hash

type Hash interface {
	hash.Hash
	// encoding.BinaryMarshaler
	MarshalBinary() (data []byte, err error)
	// encoding.BinaryUnmarshaler
	UnmarshalBinary(data []byte) error
}