hashcash

Documentation

Index

• Constants
• Variables
• func CountLeadingBits(s []byte) (n int)
• func LogDifficulty(algo hash.Hash, peers int64) (x uint64)
• func New(ctx context.Context, h hash.Hash, bits uint64, salt, payload string) (hc string, err error)
• func SqrtDifficulty(algo hash.Hash, peers int64) (x uint64)
• func Verify(h hash.Hash, hc string) (err error)
• func VerifyWithDifficultyAndPayload(h hash.Hash, hc string, difficulty uint64, payload string) (err error)

Constants

const DefaultMaxDifficulty = 32 // Can be modified by the compiler

Variables

var DefaultHashAlgorithm = sha3.New512

Functions

func CountLeadingBits

func CountLeadingBits(s []byte) (n int)

func LogDifficulty

func LogDifficulty(algo hash.Hash, peers int64) (x uint64)

func New

func New(ctx context.Context, h hash.Hash, bits uint64, salt, payload string) (hc string, err error)

Creates a hashcash (hc) hash is reset on every try

func SqrtDifficulty

func SqrtDifficulty(algo hash.Hash, peers int64) (x uint64)

func Verify

func Verify(h hash.Hash, hc string) (err error)

Verifies a hashcash is valid. Returns nil on valid And error if the hash is invalid

func VerifyWithDifficultyAndPayload

func VerifyWithDifficultyAndPayload(h hash.Hash, hc string, difficulty uint64, payload string) (err error)

Same as Verify but checks the if needed bits is greater or equal to the passed difficulty