tinysum

README

tinysum

Make a CRC32 or CRC64 checksum (with or without an offset) of a string or []byte

go get github.com/cognusion/tinysum

Why Offsets?

There may be times you don't want your checksum to be too predictable. If you use (and store) an offset, it's still trivial for you to compare and validate, but harder for someone else to validate it, even if they know- or think they know- the match string.

Documentation

Overview

Package tinysum provides a number of quazi-primitives to assist with 32 and 64-bit CRC sums

Index

• func ByteSum(b []byte) (tiny string)
• func ByteSum64(b []byte) (tiny string)
• func OffsetByteSum(b []byte, offset uint32) (tiny string)
• func OffsetByteSum64(b []byte, offset uint32) (tiny string)
• func OffsetStringSum(s string, offset uint32) (tiny string)
• func OffsetStringSum64(s string, offset uint32) (tiny string)
• func StringSum(s string) (tiny string)
• func StringSum64(s string) (tiny string)
• func Sum32(b []byte) (sum uint64)
• func Sum64(b []byte) (sum uint64)

Functions

func ByteSum

func ByteSum(b []byte) (tiny string)

ByteSum returns a CRC32 of the provided []byte

func ByteSum64

func ByteSum64(b []byte) (tiny string)

ByteSum64 returns a CRC64 of the provided []byte

func OffsetByteSum

func OffsetByteSum(b []byte, offset uint32) (tiny string)

OffsetByteSum returns an offset CRC32 of the provided []byte

func OffsetByteSum64

func OffsetByteSum64(b []byte, offset uint32) (tiny string)

OffsetByteSum64 returns an offset CRC64 of the provided []byte

func OffsetStringSum

func OffsetStringSum(s string, offset uint32) (tiny string)

OffsetStringSum returns an offset CRC32 of the provided string

func OffsetStringSum64

func OffsetStringSum64(s string, offset uint32) (tiny string)

OffsetStringSum64 returns an offset CRC64 of the provided string

func StringSum

func StringSum(s string) (tiny string)

StringSum returns a CRC32 of the provided string

func StringSum64

func StringSum64(s string) (tiny string)

StringSum64 returns a CRC64 of the provided string

func Sum32

func Sum32(b []byte) (sum uint64)

Sum32 returns the 32bit sum of b

func Sum64

func Sum64(b []byte) (sum uint64)

Sum64 returns the 64bit sum of b